Your browser doesn't support javascript.
loading
Show: 20 | 50 | 100
Results 1 - 20 de 4.561
Filter
1.
RECIIS (Online) ; 16(3): 548-559, jul.-set. 2022. tab
Article in Portuguese | LILACS | ID: biblio-1398905

ABSTRACT

Responsabilização (accountability) em comunicação e editoração científica é um importante tema em ética e integridade em pesquisa, e um dos grandes desafios atuais da ciência. Este artigo apresenta um estudo descritivo sobre a responsabilização e os seus atores na comunicação científica (autores, revisores, editores), partindo da questão da responsabilização desses atores e das más condutas científicas vista por editores de revista SciELO do Brasil e de países da América Latina. Apresenta resultados a partir da visão dos editores em que os autores são responsáveis, e, parcialmente, os revisores e os próprios editores


Accountability in scientific communication and publishing is an important topic in ethics and research integrity, and one of the great challenges of science today. This article presents a descriptive study on accountability and its actors in scientific communication (authors, reviewers, editors), starting from the issue of accountability of these actors and from the scientific misconducts viewed by SciELO journals editors in Brazil and Latin America. Based on the editors' view, it stands that the authors are responsible, and the reviewers and the editors are partially responsible


La responsabilidad (accountability) en la comunicación y publicación científica es un tema importante en la ética y la integridad en la investigación, y uno de los grandes desafíos de la ciencia actual. Este artículo presenta un estudio descriptivo sobre la responsabilidad y sus actores en la comunicación científica (autores, revisores, editores), a partir de la cuestión de responsabilidad de estos actores y de las malas conductas científicas vista por los editores de revista SciELO en Brasil y en países de América Latina. Presenta resultados en la visión de los editores de que los autores son responsables, y los revisores y los propios editores son parcialmente responsables.


Subject(s)
Humans , Publishing , Scientific Misconduct , Duty to Warn , Communication , Ethics, Research , Quality Control , Science , Periodical , Editorial Policies
2.
Int. j. high dilution res ; 21(1): 5-5, May 6, 2022.
Article in English | LILACS, HomeoIndex | ID: biblio-1396594

ABSTRACT

Quality control of ahomeopathic mother tincture begins with the analysis of the raw material. Once the product is obtained, some organoleptic characteristics and Physicochemical properties such as appearance, colour, odour, density, dry residue, alcohol content,and chemicalmarker are evaluated. In Brazil, mother tinctures from different suppliers may have high variability in terms of the specifications described in the homeopathic pharmacopoeia. Objective: The aim of the present study was to compare mother tinctures' quality control from different pharmaceutical suppliers based on Brazilian Homeopathic Pharmacopoeia 3rd edition. Methods: Five mother tinctures were selected according to the high number of requests in the pharmacies, also its monographs are in the Brazilian Homeopathic Pharmacopoeia (FHB) 3rd edition. The report of analysis of the product was provided by three homeopathic pharmacies from the city of Rio de Janeiro. The information in the reports wasevaluated and compared to its monograph. Results and discussion: In this study, it was found that the number of laboratories that provide homeopathic pharmaceutical ingredients is rather low. In addition, in some reports, a number of identification tests werenot described properly when compared to the monograph. Besides that, some information diverges from the pharmacopoeia, for example, absence of dry residue testing, replacement of the part of the plant used to prepare the mother tincture,and results that do not meet pharmacopoeia specifications. As can be seen, the quality and effectiveness of homeopathic medicines prepared from these tinctures may be compromised. Conclusion:In order to guarantee consumer protection and the quality and effectiveness of medicines, governments and regulatory agencies should requirea greater commitment from suppliers in the production of homeopathic inputs.


Subject(s)
Quality Control , Mother Tincture
3.
Rev. Méd. Inst. Mex. Seguro Soc ; 60(2): 164-170, abr. 2022. ilus, tab
Article in Spanish | LILACS | ID: biblio-1367405

ABSTRACT

Introducción: a pesar de que la técnica de papanicolaou es el método más eficaz para la prevención y detección del cáncer cervicouterino, la precisión de esta herramienta sigue siendo controversial; debido a esto, existen esfuerzos médicos y científicos para mejorar la calidad del procedimiento. Objetivo: comparar la calidad en la toma de muestra entre la técnica convencional y la modificada. Material y métodos: estudio observacional descriptivo y comparativo en 150 muestras de citología cervical (75 muestras técnica convencional y 75 en técnica modificada) en mujeres de 25 a 64 años. Se analizaron variables emográficas, características del cérvix y calidad de la muestra. Se realizó estadística descriptiva y medidas de asociación. Estudio con riesgo mayor que el mínimo. Todas las participantes firmaron consentimiento informado. Resultados: la calidad de la muestra fue satisfactoria en el 92% para la técnica convencional frente al 89.3% para la técnica modificada. La causa principal de muestras insatisfactorias fue la celularidad insuficiente, la cual se presentó en el 6.7% de las muestras con técnica convencional frente al 12% de la técnica modificada, sin diferencia significativa entre ambas técnicas p = 0.575 (1.37; 0.45-4.1), hallazgos que rechazan la hipótesis de trabajo. Conclusiones: no hubo diferencia significativa al utilizar ambas pruebas, las muestras con calidad satisfactoria fueron similares entre ambas técnicas.


Background: Despite the fact that the Papanicolaou technique is the most effective method of prevention and detection of cervical cancer, the precision of this tool remains controversial; Because of this, there are medical and scientific efforts to improve the quality of the procedure. Objective: Compare the quality of sampling between the conventional and modified technique. Material and methods: Descriptive and comparative observational study in 150 cervical cytology samples (75 conventional technique samples and 75 in modified technique) in women aged 25 to 64 years. Demographic variables, characteristics of the cervix and quality of the sample were analyzed. Descriptive statistics and association measures were performed. Study with risk greater than the minimum. All participants signed an informed consent. Results: The quality of the sample was satisfactory in 92.0% for the conventional technique vs 89.3% for the modified technique. The main cause of unsatisfactory samples was insufficient cellularity 6.7% in conventional technique vs 12% of the modified technique, with no significant difference between both techniques p = 0.575 (1.37; 0.45-4.1), findings that reject the working hypothesis. Conclusions: There was no significant difference when using both tests, the samples with satisfactory quality were similar between both techniques.


Subject(s)
Humans , Female , Adult , Middle Aged , Uterine Cervical Neoplasms/diagnosis , Papanicolaou Test/methods , Quality Control , Prospective Studies , Risk Assessment , Saline Solution
4.
Rev. bras. ciênc. vet ; 29(2): 101-106, abr./jun. 2022. il.
Article in Portuguese | LILACS, VETINDEX | ID: biblio-1399563

ABSTRACT

O objetivo deste trabalho foi analisar e correlacionar os resultados de qualidade do leite cru refrigerado de dez propriedades rurais de Viçosa (MG) obtidos por métodos de referências do Ministério da Agricultura, Pecuária e Abastecimento e por espectrofotômetros de luz infravermelha em três laboratórios (A, B e C) credenciados pelo mesmo órgão de fiscalização. As amostras de leite foram analisadas quanto à contagem bacteriana, contagem de células somáticas (CCS) e teores de gordura, proteína e extrato seco desengordurado (ESD). Não houve discordância de amostras de leite quanto aos teores de proteína e gordura. Porcentagens diferentes de discordância foram observadas entre os resultados dos laboratórios e método de referência quanto à CCS, contagem bacteriana e teores de ESD. Os teores médios de proteína dos laboratórios A e B e os teores médios de ESD de todos laboratórios não foram estatisticamente iguais (p<0,05) aos teores obtidos pelo método de referência. Os teores de gordura obtidos no laboratório B não tiveram correlação estatística (p>0,05) com os teores obtidos pelo método de referência. Observou-se que as CCS e contagens bacterianas médias de todos os laboratórios foram estatisticamente iguais (p>0,05) e correlacionadas (p<0,05) às contagens médias obtidas pelos métodos de referência. Conclui-se que os teores de proteína em dois laboratórios e ESD em todos os laboratórios não são equivalentes com os métodos de referência do MAPA. É importante que os laboratórios revejam a calibração dos seus equipamentos quanto à quantificação dos teores de sólidos do leite.


The objective of this study was to analyze and to correlate the results of refrigerated raw milk quality in ten farms of Viçosa (MG). The milk was analyzed by the Ministério da Agricultura, Pecuária e Abastecimento standard methods and by infrared spectrophotometers in three laboratories (A, B and C) accredited by the same institution. The milk samples were analyzed for bacterial counts, somatic cell count (SCC) and fat, protein and solids not fat (SNF) tenors. There were no disagreement milk samples as the protein and fat tenors. Different percentages of disagreement were observed between the results of laboratory and standard method as the SCC, bacterial count and SNF tenor. The protein mean tenor of A and B laboratories and the SNF mean tenor of all laboratories were not statistically equal (p<0.05) the tenors obtained by standard method. The fat tenors obtained in B laboratory were not statistically correlated (p>0.05) with tenors obtained by the standard method. It was observed that the means of SCC and bacterial counts of all laboratories were statistically the same (p>0.05) and correlated (p<0.05) to the means counts obtained by standard methods. It is concluded that the protein tenors in two laboratories and SNF in all laboratories are not equivalent with the reference methods of MAPA. It is important that laboratories review the calibration of the equipment on the quantification of milk solids tenors.


Subject(s)
Quality Control , Spectrophotometers , Food Quality Standards , Milk/standards , Bacterial Load/standards , Raw Foods/analysis
5.
Afr. j. lab. med. (Print) ; 11(1): 1-6, 2022. tables, figures
Article in English | AIM | ID: biblio-1378850

ABSTRACT

Background: A national proficiency test (PT) programme is not currently implemented in most low-income countries. However, participation in such PT programmes assists improves test performance and result accuracy.Objective: This study assessed how well 11 government hospital laboratories performed 18 basic clinical chemistry tests and identified areas needing improvement.Methods: A cross-sectional study was carried out by the Division of Laboratories of the Ministry of Health of Togo from 01 July 2016 to 31 December 2016. The test performance was evaluated using panels provided by One World Accuracy, Canada (Vancouver). The Clinical Laboratory Improvement Amendments criteria were used in evaluating the laboratories, and their success rates were compared with the World Health Organization Regional Office for Africa's target of 80%.Results: The overall rate of acceptable results at the laboratories was over 80% for glucose, alanine aminotransferase, aspartate aminotransferase, gamma-glutamyltransferase, alkaline phosphatase and triglycerides tests. The laboratories using fully automated spectrophotometers had an acceptable results rate of 89% (p = 0.001). The overall performance of the laboratories by cycles varied from 71% to 82%.Conclusion: This national PT programme identified the tests, which laboratories must improve their performance (urea, creatinine, uric acid, bilirubin, cholesterol, total protein, calcium, magnesium, phosphorus). It demonstrated the need for the use of routine appropriate internal quality control in all laboratories. The proficiency test programme should be extended to all clinical laboratories and target all biology disciplines


Subject(s)
Male , Female , Quality Control , Clinical Chemistry Tests , Biochemistry , Clinical Laboratory Techniques , Engineering , Academic Performance
6.
Afr. j. lab. med. (Print) ; 11(1): 1-7, 2022. tables, figures
Article in English | AIM | ID: biblio-1378865

ABSTRACT

Objective: This study aimed to determine the sigma metrics of analytes when using different total allowable error guidelines.Methods: A retrospective analysis was performed on 19 general chemistry analytes at Charlotte Maxeke Johannesburg Academic Hospital in South Africa between January 2017 and December 2017. Sigma metrics were calculated on two identical analysers, using internal quality control data and total allowable error guidelines from the Ricos biological variation database and three alternative sources (the Royal College of Pathologists of Australasia, the Clinical Laboratory Improvements Amendment, and the European Federation of Clinical Chemistry and Laboratory Medicine). Results: The sigma performance was similar on both analysers but varied based on the guideline used, with the Clinical Laboratory Improvements Amendment guidelines resulting in the best sigma metrics (53% of analytes on one analyser and 46% on the other had acceptable sigma metrics) and the Royal College of Pathologists of Australia guidelines being the most stringent (21% and 23%). Sodium and chloride performed poorly across all guidelines (sigma < 3). There were also month-to-month variations that may result in acceptable sigma despite poor performance during certain months.Conclusion: The sigma varies greatly depending on the total allowable error, but could be a valuable tool to save time and decrease costs in high-volume laboratories. Sigma metrics calculations need to be standardised


Subject(s)
Quality Control , Pathology , Total Quality Management , Clinical Chemistry Tests , Diagnostic Errors , Laboratories
7.
Asian Journal of Andrology ; (6): 15-20, 2022.
Article in English | WPRIM | ID: wpr-928511

ABSTRACT

Semen analysis is characterized by high levels of intra- and inter-laboratory variability, due to a low level of standardization, high subjectivity of the assessments, and problems with automated procedures. To improve consistency of laboratory results, quality control and training of technicians are important requisites. The goals of this study are to evaluate the results of an external quality control (EQC) program and standardized training by ESHRE Basic Semen Analysis Courses (BSAC) on the variability in manual assessments of semen parameters. We performed retrospective analyses of (1) the interlaboratory variability in the Dutch EQC program and (2) the interobserver variability in BSACs for concentration, motility, and morphology assessments. EQC data showed that the interlaboratory coefficient of variation (CV) for concentration assessment decreased (range from 24.0%-97.5% to 12.7%-20.9%) but not for morphology and motility assessments. Concentration variability was lower if improved Neubauer hemocytometers were used. Morphology assessment showed highest CVs (up to 375.0%), with many outliers in the period of 2007-2014. During BSAC, a significant reduction of interobserver variability could be established for all parameters (P < 0.05). The absence of an effect in the EQC program for motility and morphology might be explained by respectively the facts that motility assessment was introduced relatively late in the EQC program (since 2013) and that criteria for morphology assessment changed in time. BSAC results might have been influenced by the pretraining level of participants and the influence of external factors. Both EQC and training show positive effects on reducing variability. Increased willingness by laboratories to change their methods toward standards may lead to further improvements.


Subject(s)
Humans , Netherlands , Quality Control , Retrospective Studies , Semen , Semen Analysis , Sperm Count , Sperm Motility
8.
Article in Chinese | WPRIM | ID: wpr-928170

ABSTRACT

Lonicerae Japonicae Flos, as common Chinese medicine, has been used for thousands of years in the treatment of inflammation and infectious diseases with definite efficacies. The complex composition of Lonicerae Japonicae Flos results in its extensive pharmacological effects, so the assessment of its quality by only a few index components is not comprehensive. Guided by the quality marker(Q-marker), the present study comprehensively analyzed and predicted the quality connotation of Lonicerae Japonicae Flos based on the chemical composition and component transfer, the phylogenetic relationship, chemical composition effectiveness, measurability, and specificity. Chlorogenic acid, isochlorogenic acids A, B, and C, luteoloside, rutin, sweroside, and secoxyloganin were predicted as candidate Q-markers of Lonicerae Japonicae Flos.


Subject(s)
Chromatography, High Pressure Liquid , Drugs, Chinese Herbal/chemistry , Flowers/chemistry , Lonicera/chemistry , Phylogeny , Quality Control
9.
Article in Chinese | WPRIM | ID: wpr-928150

ABSTRACT

According to the polarity of different components in Sanpian Decoction, two fingerprints were established. Then the substance benchmark freeze-dried powder of 15 batches of Sanpian Decoction was prepared, followed by the determination of the fingerprints, index component content, and dry extract rates, the identification of attribution of characteristic peaks, and the calculation of similarities between these fingerprints and the reference(R), the content and transfer rate ranges of ferulic acid, sinapine thiocyanate, liquiritin, and glycyrrhizic acid, and the dry extract rate range. The results showed that the similarities of 15 batches of the substance benchmark fingerprints with R were all greater than 0.900.Further summarization of the characteristic peaks revealed that there were a total of 20 characteristic peaks in fingerprint 1, among which, eight were from Sinapis Semen, four from Paeoniae Radix Alba, six from Chuanxiong Rhizoma, and two from Glycyrrhizae Radix et Rhizoma. A total of 16 characteristic peaks were observed in fingerprint 2, including one from Sinapis Semen, three from Paeoniae Radix Alba, eight from Chuanxiong Rhizoma, and four from Glycyrrhizae Radix et Rhizoma. The average dry extract rate of 15 batches of substance benchmarks was 18.25%, with a dry extract rate range of 16.28%-20.76%. The index component content and transfer rate ranges were listed as follows: 0.15%-0.18% and 38.81%-58.05% for ferulic acid; 0.26%-0.42% and 36.51%-51.02% for sinapine thiocyanate; 0.09%-0.15% and 48.80%-76.61% for liquiritin; 0.13%-0.24% and 23.45%-35.61% for glycyrrhizic acid. The fingerprint, dry extract rate, and index component content determination was combined for analyzing the quality value transfer of substance benchmarks in the classic prescription Sanpian Decoction.The established quality evaluation method for the substance benchmarks was stable and feasible, which has provided a basis for the quality control of Sanpian Decoction and the follow-up development of related preparations.


Subject(s)
Benchmarking , Chromatography, High Pressure Liquid , Drugs, Chinese Herbal , Glycyrrhizic Acid/analysis , Paeonia , Quality Control , Thiocyanates
10.
Article in Chinese | WPRIM | ID: wpr-928149

ABSTRACT

The methods for determining the characteristic chromatogram and index components content of Xuanfu Daizhe Decoction were established to provide a scientific basis for the quality evaluation of substance benchmarks and preparations. Eighteen batches of Xuanfu Daizhe Decoction were prepared with the decoction pieces of different batches and of the same batch were prepared respectively, and the HPLC characteristic chromatograms of these samples were established. The similarities of the chromatographic fingerprints were analyzed. With liquiritin, glycyrrhizic acid, 6-gingerol, ginsenoside Rg_1, and ginsenoside Re as index components, the high performance liquid chromatography was established for content determination with no more than 70%-130% of the mass average as the limit. The results showed that there were 19 characteristic peaks corresponding to the characteristic chromatograms of 18 batches of Xuanfu Daizhe Decoction, including 8 peaks representing liquiritin, 1,5-O-dicaffeoylqunic acid, ginsenoside Rg_1, ginsenoside Re, 1-O-acetyl britannilactone, ginsenoside Rb_1, glycyrrhizic acid, and 6-gingerol, and the fingerprint similarity was greater than 0.97. The contents of liquiritin, glycyrrhizic acid, 6-gingerol, and ginsenosides Rg_1 + Re in the prepared Xuanfu Daizhe Decoction samples were 0.53%-0.86%, 0.61%-1.2%, 0.023%-0.068%, and 0.33%-0.66%, respectively. Except for several batches, most batches of Xuanfu Daizhe Decoction showed stable contents of index components, with no discrete values. The characteristic chromatograms and index components content characterized the information of Inulae Flos, Ginseng Radix et Rhizoma, Glycyrrhizae Radix et Rhizoma, and Zingiberis Rhizoma Recens in Xuanfu Daizhe Decoction. This study provides a scientific basis for the further research on the key chemical properties of substance benchmark and preparations of Xuanfu Daizhe Decoction.


Subject(s)
Benchmarking , Chromatography, High Pressure Liquid , Drugs, Chinese Herbal/chemistry , Ginsenosides/analysis , Glycyrrhizic Acid/analysis , Quality Control
11.
Article in Chinese | WPRIM | ID: wpr-928136

ABSTRACT

The fingerprint of Boenninghausenia albiflora var. albiflora was established by ultra performance liquid chromatography(UPLC), and the content of 12 active components including chlorogenic acid was determined. Multivariate statistical analysis was used to explore the indicator components of B. albiflora var. albiflora and a comprehensive evaluation system was created for the quality of B. albiflora var. albiflora. In this study, 33 batches of B. albiflora var. albiflora with different sources were collected and studied, and the UPLC fingerprint of B. albiflora var. albiflora was developed. There were 37 common peaks, of which 12 components were identified, and the content of these 12 components was measured. In combination of the common peaks and the content of chemical components, multivariate statistical analysis was performed, and the results showed that 6 components [daphnoretin, isoimperatorin, astragalin, imperatorin, neochlorogenic acid, and isoquercitrin(weight coefficient>0.1)] were selected as chemical markers for the quality of B. albiflora var. albiflora. Technique for order of preference by similarity to ideal solution(TOPSIS) analysis and chemometrics revealed that the quality of S32, S28 and S29 were superior, while that of S12, S7 and S16 were inferior. The quality evaluation method of B. albiflora var. albiflora constructed in this study was accurate and reliable, with simpleness and easiness to operate. It is suggested that the 6 above-mentioned active components could be used as indicator components for quality control of B. albiflora var. al-biflora. The samples were harvested during the flowering and fruiting period, which is from the beginning of July to the end of August.


Subject(s)
Chromatography, High Pressure Liquid/methods , Chromatography, Liquid , Drugs, Chinese Herbal/chemistry , Multivariate Analysis , Quality Control
12.
Article in Chinese | WPRIM | ID: wpr-928126

ABSTRACT

Physical attributes of Chinese herbal extracts are determined by their chemical components, and the physical and chemical attributes jointly affect the preparation process performance and the final product quality. Therefore, in order to improve the quality control of Chinese herbal extracts, we should comprehensively study the batch-to-batch consistency of physical and chemical attributes as well as the correlations between them. This paper first explored the physical attributes affecting the preparation process performance of the compound Danshen extract and developed a method for characterizing the texture attributes. With such main chemical components as water, phenolic acids, saponins, and saccharides and texture, rheology, and other physical attributes taken into consideration, the batch-to-batch quality fluctuation of products from different production lines and time was analyzed by principal components analysis(PCA). Finally, the correlation and partial least squares(PLS) analysis was conducted, and the regression equation was established. The fitting result of the PLS model for dynamic viscosity was satisfying(R~2Y=0.857, Q~2=0.793), suggesting that the chemical components could be adjusted by the component transfer rate in the extraction process, the impurity removal rate in the alcohol precipitation process, and the water retention rate of the concentration process to meet the control of the extract dynamic viscosity. This study clarified the correlations between physical and chemical attributes of the compound Danshen extract and established a method for controlling its physical attributes based on process regulation, which would provide reference for improving the quality control of Chinese herbal extracts.


Subject(s)
Drugs, Chinese Herbal/chemistry , Quality Control , Salvia miltiorrhiza/chemistry , Water
13.
Article in Chinese | WPRIM | ID: wpr-928110

ABSTRACT

The present study collected, collated, analyzed, and evaluated randomized controlled trial(RCT) of Chinese patent medicine published in Chinese and English journals in 2020, and summarized clinical evidence of Chinese patent medicine in stages, providing references for follow-up clinical research and evidence transformation and application. On the basis of the collection in the Traditional Chinese Medicine(TCM) Clinical Evidence Database System(EVDS), CNKI, Wanfang, SinoMed, Cochrane Library, PubMed, and EMbase were searched for RCTs of Chinese patent medicine published in 2020, and their research characteristics and methodological quality were analyzed and evaluated. A total of 1 285 research papers on Chinese patent medicine(1 257 in Chinese/28 in English) were included, involving 146 054 patients and 639 Chinese patent medicines, including 526 oral drugs, 68 injections, and 45 external drugs. A total of 412 diseases in 23 types were involved, which were dominated by circulatory system diseases and respiratory system diseases, specifically, cerebral infarction and angina pectoris. The sample size ranged from 20 cases to 2 673 cases, and 57.67% of RCTs had samples sizes less than 100. Single-center trials were the main ones, and multi-center trials only accounted for 4.75%(n=61). In terms of methodological quality, 52.91% of the RCTs had unclear descriptions or incorrect application of randomization methods, and the implementation of allocation concealment and blinding methods has not been paid much attention. In conclusion, compared with the conditions in 2019, the number of RCTs published in 2020 has decreased, and the research interest in respiratory diseases has increased, while the quality control in the process of research design and implementation has not been improved. Therefore, it is necessary to strengthen the methodological training of researchers and promote the output of high-quality research evidence.


Subject(s)
China , Drugs, Chinese Herbal/therapeutic use , Humans , Medicine, Chinese Traditional , Nonprescription Drugs , Quality Control
14.
Article in Chinese | WPRIM | ID: wpr-928086

ABSTRACT

The high performance liquid chromatography(HPLC) characteristic chromatogram of Xiaoer Ganmaoning Oral Liquid(oral liquid for short) was established. The medicinal materials corresponding to characteristic peaks, their index components and ranges of similarity with the reference chromatograms were clarified. The similarity between the characteristic chromatograms of 10 batches of the oral liquid and the reference chromatogram was higher than 0.994. Eighteen characteristic peaks were identified, which were derived from different medicinal materials including Scutellariae Radix, Arctii Fructus, Lonicerae Japonicae Flos, Gardeniae Fructus and Forsythiae Fructus. Further, 11 characteristic peaks were assigned by the comparison with reference substances as chlorogenic acid, neochlorogenic acid, cryptochlorogenic acid, isochlorogenic acid A, isochlorogenic acid C, baicalin, baicalein, wogonin, scutellarin, forsythiaside A and arctiin. Also, the characteristic chromatogram of precipitate in the oral liquid was established, and the similarity between characteristic chromatograms of 10 batches of the precipitate and the reference chromatogram was higher than 0.940. The 14 characteristic peaks originating from the precipitate and those from the oral liquid were consistent in retention time, and the content of all index components in the precipitate was lower than 5% of that in the oral liquid. Moreover, the stability of precipitate during the accelerated stability test was explored with filtration and Matlab-based image sensory evaluation. The precipitate mass and precipitation degree both increased over the stability test duration significantly. The stability of the oral liquid was used as a model system in this study to establish the integrated quality control system which related to medicinal materials, preparations and precipitate with HPLC characteristic chromatograms and image sensory evaluation, which lays a foundation for the exploration of the quantity value transfer of the oral liquid.


Subject(s)
Chromatography, High Pressure Liquid/methods , Drugs, Chinese Herbal/chemistry , Quality Control , Scutellaria baicalensis/chemistry
15.
Article in Chinese | WPRIM | ID: wpr-928051

ABSTRACT

In this study, we employed Q Exactive to determine the main differential metabolites of Magnoliae Officinalis Cortex du-ring the "sweating" process. Further, we quantified the color parameters and determined the activities of polyphenol oxidase(PPO), peroxidase(POD), and tyrosinase of Magnoliae Officinalis Cortex during the "sweating" process. Gray correlation analysis was performed for the color, chemical composition, and enzyme activity to reveal the effect of enzymatic reaction on the color of Magnoliae Officinalis Cortex during the "sweating" process. Magnoliae Officinalis Cortex sweating in different manners showed similar metabolite changes. The primary metabolites that changed significantly included amino acids, nucleotides, and sugars, and the secondary metabolites with significant changes were phenols and phenylpropanoids. Despite the different sweating methods, eleven compounds were commonly up-regulated, including L-glutamic acid, acetylarginine, hypoxanthine, and xanthine; six compounds were commonly down-re-gulated, including L-arginine, L-aspartic acid, and phenylalanine. The brightness value(L~*), red-green value(a~*), and yellow-blue value(b~*) of Magnoliae Officinalis Cortex kept decreasing during the "sweating" process. The changes in the activities of PPO and POD during sweating were consistent with those in the color parameter values. The gray correlation analysis demonstrated that the main differential metabolites such as amino acids and phenols were closely related to the color parameters L~*, a~* and b~*; POD was correlated with amino acids and phenols; PPO had strong correlation with phenols. The results indicated that the color change of Magnoliae Officinalis Cortex during "sweating" was closely related to the reactions of enzymes dominated by PPO and POD. The study analyzed the correlations among the main differential metabolites, color parameters, and enzyme activities of Magnoliae Officinalis Cortex in the "sweating" process. It reveals the common law of material changes and ascertains the relationship between color changes and enzymatic reactions of Magnoliae Officinalis Cortex during "sweating". Therefore, this study provides a reference for studying the "sweating" mechanism of Magnoliae Officinalis Cortex and is of great significance to guarantee the quality of Magnoliae Officinalis Cortex.


Subject(s)
Magnolia/chemistry , Quality Control , Sweating
16.
Article in Chinese | WPRIM | ID: wpr-928040

ABSTRACT

Against the backdrop of "Internet+" and Made in China 2025, Chinese medicinal processing equipment embraces various opportunities and develops to an unprecedented level. In the 20 years of the new century, the processing equipment has gradually developed in the direction of high efficiency, energy saving, environmental protection, integration, and automation, and this field has tended to highlight the establishment and application of the linkage production line for the processing of Chinese medicinal decoction pieces. Integrating automation control technology, online detection technique, and the internet of things technology, the online detection system of Chinese medicinal processing equipment and the computer information management system of Chinese medicinal proces-sing are the mainstream development trends of Chinese medicinal processing equipment. Standard Chinese medicine processing equipment is the prerequisite for the standardization of processing parameters. A standard system for processing equipment and processing parameters is the key to the modernization of Chinese medicinal decoction pieces. This paper summarized the research and application of Chinese medicinal processing equipment in the 20 years of the 21 st century and predicted the development trend, which is expected to serve as a reference for the technological innovation and development of the processing equipment.


Subject(s)
Automation , Drugs, Chinese Herbal , Medicine, Chinese Traditional , Quality Control , Reference Standards
17.
Article in Chinese | WPRIM | ID: wpr-928014

ABSTRACT

The present study detected the component content in Dalbergiae Odoriferae Lignum by HPLC fingerprint and the multi-component determination method. HPLC analysis was performed on the Agilent ZORBAX SB-C_(18) column(4.6 mm×250 mm, 5 μm). Acetonitrile-0.5% phosphoric acid aqueous solution with gradient elution was employed as the mobile phase. The flow rate was 1.0 mL·min~(-1) and the column temperature was maintained at 30 ℃. The detection wavelength was 210 nm and the sample volume was 10 μL. The similarity of 18 batches of Dalbergiae Odoriferae Lignum was 0.343-0.779, indicating that there were great differences between different batches of Dalbergiae Odoriferae Lignum. Eighteen common peaks were identified, including eight flavonoids such as liquiritigenin and latifolin. The mass fractions of liquiritigenin, luteolin, naringenin, isoliquiritigenin, formononetin, dalbergin, latifolin, and pinocembrin were in the ranges of 0.134 1%-0.495 2%, 0.028 2%-0.167 0%, 0.016 3%-0.591 3%, 0.053 5%-0.188 0%, 0.142 4%-0.640 1%, 0.068 0%-0.590 7%, 0.003 2%-1.980 7%, and 0.009 6%-0.740 2%, respectively. Eighteen batches of Dalbergiae Odoriferae Lignum were divided into three categories by cluster analysis and eight differential components in Dalbergiae Odoriferae Lignum were marked by partial least-squares discriminant analysis(PLS-DA). The cumulative variance contribution rate was 90.5%. The HPLC fingerprint combined with the multi-component determination method for Dalbergiae Odoriferae Lignum is easy in operation and accurate in results, with good repeatability and reliability. The quality of Dalbergiae Odoriferae Lignum can be evaluated and analyzed by the PLS-DA model. This study is expected to provide a reference for the quality control and clinical application of Dalbergiae Odoriferae Lignum.


Subject(s)
Chromatography, High Pressure Liquid/methods , Drugs, Chinese Herbal/analysis , Flavonoids/analysis , Quality Control , Reproducibility of Results
18.
Article in Chinese | WPRIM | ID: wpr-928003

ABSTRACT

As a unique medical resource in China, Chinese herbal medicine plays a key role in the prevention and treatment of human diseases. With the gradual expansion of applications, the quality of Chinese herbal medicine has become the focus of attention. The quality of Chinese herbal medicines depends largely on their source authenticity. Tracing the origin of Chinese herbal medicines plays an important role in ensuring their quality and efficacy and reducing the mixing and adulteration of Chinese herbal medicines from different regions. Stable isotope technology, as a key technology for origin tracing of agricultural products and food, has been used in the research of Chinese herbal medicines from multiple sources and origins in recent years. This new technological means contributes to standardizing the origin of Chinese herbal medicines and controlling their quality from the source. Apart from introducing the basic principles of stable isotope technology and the characteristics of common stable isotopes, this study reviewed the application status of light and heavy stable isotopes in the origin tracing of Chinese herbal medicines and their correlation with ecological factors, and forecasted the application prospect of this technology in the authentication of Chinese herbal medicines, aiming to provide reference for the geographical origin tracing of Chinese herbal medicines and promote the sustainable development of traditional Chinese medicine.


Subject(s)
Drug Contamination , Drugs, Chinese Herbal/analysis , Humans , Isotopes , Medicine, Chinese Traditional , Quality Control
19.
Article in Chinese | WPRIM | ID: wpr-927976

ABSTRACT

A UHPLC-Q Exactive Orbitrap MS method was used to analyze the chemical constituents of the classical prescription Qianghuo Shengshi Standard Decoction(QHSS). UHPL conditions were as follows: Waters~(TM) UPLC~(TM) HSS T3 C_(18) column(2.1 mm×100 mm, 1.7 μm) and mobile phase of acetonitrile-0.1% formic acid aqueous solution. Mass spectrometry data of QHSS, each herb extract, and negative sample were collected in both positive and negative ion modes. The chemical constituents of QHSS were identified or tentatively identified based on the accurate molecular weight, retention time, MS fragmentation, comparison with reference substances, and literature reports. A total of 141 compounds were identified, including 18 amino acids, oligosaccharides, oligopeptides, and their derivatives, 19 phenolic acids, 44 coumarins, 18 flavonoids and chromones, 13 saponins, 17 phthalides, and 12 other components. This study comprehensively characterized the chemical constituents of QHSS, laying an experimental basis for the in-depth research on the material basis and quality control of QHSS.


Subject(s)
Chromatography, High Pressure Liquid , Drugs, Chinese Herbal/chemistry , Gas Chromatography-Mass Spectrometry , Mass Spectrometry , Quality Control
20.
Article in Chinese | WPRIM | ID: wpr-927975

ABSTRACT

Fingerprints of 18 batches of substance benchmark of Shentong Zhuyu Decoction(SZD) were established by UPLC under the following conditions: Waters Sun Fire C_(18) column(3.0 mm×150 mm, 3.5 μm), column temperature of 35 ℃, gradient elution with mobile phase of acetonitrile(A)-0.1% phosphoric acid aqueous solution(B) at the flow rate of 0.4 mL·min~(-1), and detection by wavelength switching. A total of 16 common peaks were identified. The similarities among the fingerprints were calculated by Similarity Evaluation System for Chromatographic Fingerprint of Traditional Chinese Medicine(2012 Edition) and the result showed they were in the range of 0.911-0.988. Based on the 16 common peaks, cluster analysis(CA), principal component analysis(PCA), and partial least square discriminant analysis(PLS-DA) all categorized the 18 batches of samples into two groups(S1, S2, S5-S8, S14, and S17 in one group, and S1, S2, S5-S8, S14, and S17 in another), and 11 most influential components were screened. Five known components with great difference among samples(hydroxysafflor yellow A, ferulic acid, benzoic acid, ecdysone, and ammonium glycyrrhizinate) were determined. The combination of multi-component content determination and fingerprints can reflect the overall cha-racteristics of the primary standards of SZD, which is simple, feasible, reproducible, and stable. This study can serve as a reference for the quality control of the primary standards of SZD.


Subject(s)
Chromatography, High Pressure Liquid , Drugs, Chinese Herbal/standards , Quality Control
SELECTION OF CITATIONS
SEARCH DETAIL