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1.
International Journal of Applied Pharmaceutics ; 15(3):1-11, 2023.
Article in English | EMBASE | ID: covidwho-20242785

ABSTRACT

Recent advancements in nanotechnology have resulted in improved medicine delivery to the target site. Nanosponges are three-dimensional drug delivery systems that are nanoscale in size and created by cross-linking polymers. The introduction of Nanosponges has been a significant step toward overcoming issues such as drug toxicity, low bioavailability, and predictable medication release. Using a new way of nanotechnology, nanosponges, which are porous with small sponges (below one microm) flowing throughout the body, have demonstrated excellent results in delivering drugs. As a result, they reach the target place, attach to the skin's surface, and slowly release the medicine. Nanosponges can be used to encapsulate a wide range of medicines, including both hydrophilic and lipophilic pharmaceuticals. The medication delivery method using nanosponges is one of the most promising fields in pharmacy. It can be used as a biocatalyst carrier for vaccines, antibodies, enzymes, and proteins to be released. The existing study enlightens on the preparation method, evaluation, and prospective application in a medication delivery system and also focuses on patents filed in the field of nanosponges.Copyright © 2023 The Authors.

2.
Biochem Mol Biol Educ ; 2023 Jun 14.
Article in English | MEDLINE | ID: covidwho-20235146

ABSTRACT

The COVID-19 pandemic caused several educational challenges. Conducting laboratory experiments was an uphill task during the pandemic. Here, we developed a low-cost and reliable home-based experimental setup to teach column and thin layer chromatography (TLC) using silica gel granules available at home. Powdered silica gel, prepared by grinding silica gel granules, was used as the stationary phase. Iso-propyl alcohol, purchased from a pharmacy, was diluted with water and used as the mobile phase. A food coloring was chromatographically separated using the designed column. Moreover, TLC plates were prepared using powdered silica gel and a drop of food coloring was separated on TLC plates using the same mobile phase. In the article, we show our experiences by providing methods used to implement this experimental setup. We assume that this experimental setup will be helpful for other universities, research institutes and schools to develop online laboratory curricula to demonstrate basic chromatography techniques required for subjects such as chemistry, biochemistry and biology.

3.
Pediatric Hematology Oncology Journal ; 7(2):52-53, 2022.
Article in English | Scopus | ID: covidwho-2320584
4.
International Journal of Pharmaceutical Sciences and Research ; 14(4):1622-1629, 2023.
Article in English | EMBASE | ID: covidwho-2304293

ABSTRACT

Naringin is a flavonoid isolated from different citrus fruits like Grapefruit, Orange, Pomelo, Lemon, etc, which are commonly called local fruit. Naringin is found in the white spongy portion of citrus peel. Its content varies from 0.65 mg/gm in the mandarin peel to 14.40mg/gm in the grapefruit peel. Naringin is metabolized to the flavanone naringenin by the enzyme Naringinase present in the liver. It can be analyzed by using various analytical techniques such as HPLC, TLC, UV, HPTLC, mass spectroscopy, Liquid chromatography, chiral chromatography and LC/Mass spectroscopy. Naringin can act as an antioxidant and scavenge free radicals. Naringin mainly focuses on in-vitro and in-vivo animal studies showing its beneficial effects on cardioprotective, antioxidant, anti-inflammatory, antimicrobial, hypolipemiant, neurological, thermogenic, pulmonary disorders and antidiabetic. Naringin is also treated as a most promising treatment strategy against Covid-19 due to its antiviral and anti-inflammatory effects. Recently, Naringin has proven its activity in various molecular docking studies. Naringin keeps the body healthy against various illnesses and major lifestyle disorders.Copyright All © 2023 are reserved by International Journal of Pharmaceutical Sciences and Research.

5.
Journal of Natural Remedies ; 23(1):231-235, 2023.
Article in English | EMBASE | ID: covidwho-2301570

ABSTRACT

Kabasura Kudineer is a polyherbal decoction of the Siddha medical system (an Indian system of medicine), traditionally used to cure fever, colds, coughs, and respiratory ailments. The government of India had recommended Kabasura Kudineer as one of many preventive/treatment measures for COVID-19. Kabasura Kudineer Choornam is an admixed coarse powder of 15 herbs and its decoction is Kabasura Kudineer. The chemical constituents in the 15 herbs used for the preparation of the Choornam are known but the constituents present in the Kabasura Kudineer (decoction) are unidentified. Piperine, vasicine and eugenol are known for their potent activity against respiratory tract infections;hence, they were selected as marker compounds. The present work was planned to simultaneously quantify piperine, vasicine and eugenol in Kabasura Kudineer by the HPTLC method. The optimised mobile phase was toluene: ethyl acetate: methanol: ammonia (5:9:3:0.5, v/v/v/v), and the scanning was carried out at 287 nm. The Rf values of piperine, vasicine and eugenol were found to be 0.70, 0.32 and 0.82, respectively. The linearity range of piperine and vasicine was 500-3000 ng spot-1 and it was 10-60 ng spot-1 for eugenol. The quantities of piperine, vasicine and eugenol in Kabasura Kudineer (100 mL) were 0.03, 0.056 and 0.035 % w/v, respectively. This developed method can be used to simultaneously quantify piperine, vasicine and eugenol in any polyherbal formulation.Copyright © 2023, Informatics Publishing Limited and Society for Biocontrol Advancement. All rights reserved.

6.
J Clin Exp Hepatol ; 13(2): 360-371, 2023.
Article in English | MEDLINE | ID: covidwho-2273514

ABSTRACT

Background: Tinospora cordifolia (TC) is being increasingly consumed in India for its health and suggested immune-enhancing benefits in preventing and countering COVID-19. We previously published our experience of hepatotoxicity with self-medication of TC in six individuals. Since herb-induced liver injury (HILI) has been described with Tinospora crispa (TCR) consumption, it was contested that our patients may have mistakenly self-medicated with TCR which is similar in appearance to TC. Methods: We collected the four plant samples and two commercial preparations that were consumed by our patients for further analysis. The six samples underwent high performance thin layer chromatography phytochemical analysis and DNA barcoding studies for the confirmation of the genus and species. The four plant part samples which included stems and leaves were also analysed by a botanist for the characteristic morphological and microscopic features. Results: Based on morphological, microscopic, phytochemical and DNA studies, the four plant part samples were identified as TC. The two commercial preparations could not be analysed on phytochemical analysis or DNA barcoding studies due to other ingredients that most likely interfered with the analysis. The herb consumed by our study subjects was confirmed to be Tinospora cordifolia. Conclusion: We have highlighted the key morphological and phytochemical differences between these two species. We propose an algorithmic approach to accurately identify the implicated herb in cases of HILI. Future studies on causality need to focus on the serological/histopathological identification of active herb/metabolites in human tissues.

7.
International Journal of Pharmaceutical Sciences and Research ; 13(5):1818-1832, 2022.
Article in English | EMBASE | ID: covidwho-2235585

ABSTRACT

Guduchi (Tinospora cordifolia) is an essential drug of the Ayurvedic medicine system used in different Ayurvedic formulations to treat a variety of ailments. Guduchi is a member of the Menispermaceae family and is widely produced in tropical and sub-tropical countries such as India, Sri Lanka, China, Myanmar, Philippines, South Africa, Thailand, Bangladesh, and several south-east Asian continents such as Indonesia, Malaysia. All parts of Guduchi have nutritional value and medicinal importance, including the roots, stem, bark, and leaves. A different class of phytochemicals like alkaloids, glycosides, aliphatic compounds, diterpenoids, sesquiterpenoids, phenolic compounds, steroid and polysaccharides, etc., are found in Guduchi. Tinosporaside, tinosporine, magnosporine, berberine, choline, Jatrorrhizine, palmatine, beberine, giloin, giloinsterol, and other beneficial biomarkers are present in this herb. Guduchi is used to treat cold, fever, headache, jaundice, digestive disorder, among other things, and it shows several proven pharmacological activities such as anti-oxidant, anti-inflammatory, antidiabetic, immunomodulatory activity, anti-toxic, hepatoprotective, anticancer, cardioprotective activity, radioprotective, antimicrobial, anti-stress, anti-HIV and many more. This review article majorly highlights the phytochemical present in Guduchi, analytical works and pharmacological activities of Guduchi. Copyright © 2022 are reserved by International Journal of Pharmaceutical Sciences and Research.

8.
International Journal of Applied Pharmaceutics ; 15(1):59.0, 2023.
Article in English | EMBASE | ID: covidwho-2231851

ABSTRACT

Incidences and mortality from cardiovascular illnesses have grown during the last few decades. In patients with pre-existing cardiac disease, the COVID-19 pandemic has exacerbated cardiovascular problems. Researchers observed that rates of many conditions, comprising coronary heart failure and stroke, had been drastically higher in those who had recovered from COVID-19 as compared to those who did not have the disease. Herbal medicine is becoming more and more popular due to its relatively high safety and low toxicity. Shilajit has several beneficial properties because it primarily comprises fulvic acid and more than 84 minerals. It demonstrates antioxidant activity, which is a key factor in cardioprotection. Shilajit is appropriately referred to as "Rasayana/ Rasayanam";it translates as "rejuvenator" in Ayurvedic and Siddha scriptures since it prevents illnesses and improves the quality of life. The current study involved the collection, authentication, purification, and use of several extractive solvents to achieve high yield, then the extract was enriched by using organic solvents. UV-Vis spectroscopy was performed on each of the enriched samples, and the results showed that the enriched samples had increased fulvic acid concentrations. Fulvic acid was used as a standard in thin-layer chromatography. The extract's in-vitro antioxidant activity was assessed using the DPPH assay, and the results indicated good antioxidant activity. phytosomes were formulated by rapid injection methods for extract and enriched extract, and they were characterized using several spectroscopic techniques. According to the study's findings, combining novel formulation with conventional drug may improve its therapeutic potential and bioavailability.

9.
Methods Mol Biol ; 2619: 61-69, 2023.
Article in English | MEDLINE | ID: covidwho-2229918

ABSTRACT

The growing body of evidence supports the potential of using urinary glycosaminoglycans (uGAGs) levels as biomarkers to guide diagnosis and as predictive biomarkers of treatment efficacy. Recently, studies have shown that, in addition to MPS, the prognosis and treatment of cancers and viral infections, including COVID-19, are enabled by characterization and/or traits by GAGs. Reliable and accessible detection and assay protocols of urinary GAGs are therefore of great support for laboratory workers and clinicians. Here we describe a semiquantitative and quantitative urinary glycosaminoglycans determination using 1,9-dimethylmethylene blue (DMB) and the characterization of uGAGs using thin layer chromatography (TLC).


Subject(s)
COVID-19 , Mucopolysaccharidoses , Humans , Glycosaminoglycans , Mucopolysaccharidoses/diagnosis , COVID-19/diagnosis , Biomarkers , Chromatography, Thin Layer
10.
Molecules ; 28(2)2023 Jan 05.
Article in English | MEDLINE | ID: covidwho-2166753

ABSTRACT

Favipiravir (FAV) has become a promising antiviral agent for the treatment of COVID-19. Herein, a green, fast, high-sample-throughput, non-instrumental, and affordable analytical method is proposed based on surfactant-assisted dispersive liquid-liquid microextraction (SA-DLLME) combined with thin-layer chromatography-digital image colourimetry (TLC-DIC) for determining favipiravir in biological and pharmaceutical samples. Triton X-100 and dichloromethane (DCM) were used as the disperser and extraction solvents, respectively. The extract obtained after DLLME procedure was spotted on a TLC plate and allowed to develop with a mobile phase of chloroform:methanol (8:2, v/v). The developed plate was photographed using a smartphone under UV irradiation at 254 nm. The quantification of FAV was performed by analysing the digital images' spots with open-source ImageJ software. Multivariate optimisation using Plackett-Burman design (PBD) and central composite design (CCD) was performed for the screening and optimisation of significant factors. Under the optimised conditions, the method was found to be linear, ranging from 5 to 100 µg/spot, with a correlation coefficient (R2) ranging from 0.991 to 0.994. The limit of detection (LOD) and limit of quantification (LOQ) were in the ranges of 1.2-1.5 µg/spot and 3.96-4.29 µg/spot, respectively. The developed approach was successfully applied for the determination of FAV in biological (i.e., human urine and plasma) and pharmaceutical samples. The results obtained using the proposed methodology were compared to those obtained using HPLC-UV analysis and found to be in close agreement with one another. Additionally, the green character of the developed method with previously reported protocols was evaluated using the ComplexGAPI, AGREE, and Eco-Scale greenness assessment tools. The proposed method is green in nature and does not require any sophisticated high-end analytical instruments, and it can therefore be routinely applied for the analysis of FAV in various resource-limited laboratories during the COVID-19 pandemic.


Subject(s)
COVID-19 , Liquid Phase Microextraction , Pulmonary Surfactants , Humans , Surface-Active Agents , Colorimetry , Chromatography, Thin Layer , Liquid Phase Microextraction/methods , Smartphone , Pandemics , Solvents , Chromatography, High Pressure Liquid , Lipoproteins , Pharmaceutical Preparations , Limit of Detection
11.
Journal of Chemical Education ; 99(5):2079-2085, 2022.
Article in English | English Web of Science | ID: covidwho-1882728

ABSTRACT

In the past few decades, chemistry has evolved to interact withvarious disciplines to synergistically help tackle global challenges. This, in turn,requires that newer generations of chemistry students are trained to be moreflexible in accepting and coordinating new concepts. In this experiment, pineapplewas used as a key model to allow for the incorporation of multiple importantconcepts into the laboratory. Using carotenoid separation as a main goal, columnchromatography, UV-vis spectroscopy, thin-layer chromatography, high-perform-ance liquid chromatography, mass spectrometry, and principal component analysiscan be included in a cohesive laboratory experiment. On the other hand, theseactivities were also designed to be modular, thus allowing instructors to add,remove, or modify the contents in a highly customizable manner. This makes ithighly versatile and amenable to uncertain situations like unexpected universityclosure due to COVID-19 related lockdown. Overall, this laboratory experimentserves as a practical example of how chemistry can help solve real-world problems while also allowing highflexibility in teaching management

12.
Journal of the Iranian Chemical Society ; : 1-10, 2022.
Article in English | Academic Search Complete | ID: covidwho-1872753

ABSTRACT

Antioxidants can scavenge free radicals in the human body and have been associated with a protective effect on the human body against a variety of diseases. As a part of normal cellular function, free radical production occurs continuously within the body at a cellular level. Excess-free radical production from endogenous or exogenous sources may result in a variety of diseases. Vitamins (A, C, and E), carotenoids, polyphenols, and flavonoids are some examples of common natural antioxidants. Among the different antioxidants quercetin, curcumin, and ascorbic acids have been extensively studied, and numerous reports on their antioxidant activity are available in the literature. Antioxidants are regarded as a key player in the current pandemic situation, and they play a key role as a preventive and controlling tool. There are a variety of herbal formulations and immune booster therapies available, many of which claim to contain various antioxidants and are effective against covid-19. Numerous herbal formulations and immune booster therapies are available and claimed to have different antioxidants and other constituents. In the present study simple, rapid, accurate, precise, and sensitive high-performance thin-layer chromatographic analytical method was developed for simultaneous estimation of quercetin, curcumin, and ascorbic acid. The developed method can effectively employ for different polyherbal formulations. The developed method was validated according to ICH guidelines. In the present study, an aluminum plate precoated with 60F 254 silica gel was used as a stationary phase whereas chloroform: ethyl acetate: formic acid (6:6:2.5 v/v/v) was used as a mobile phase. Chromatographic detection was performed with a Camag TLC scanner at 265 nm. The linearity range for the proposed method was found to be 500–1000 ng/band for all three analytes. The antioxidant potentiality of selected antioxidants was evaluated by an optimized UV visible spectroscopic-reducing power method. The reducing power method was optimized for the concentration and volume of reagent, incubation temperature, and time. The results of the study revealed that quercetin is having the best antioxidant potential compared to curcumin and ascorbic acid. [ FROM AUTHOR] Copyright of Journal of the Iranian Chemical Society is the property of Springer Nature and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full . (Copyright applies to all s.)

13.
International Journal of Microbiology ; 2022, 2022.
Article in English | ProQuest Central | ID: covidwho-1871145

ABSTRACT

The antimicrobial potential of Aspergillus sp., isolated from the Amazon biome, which is stored at the Amazon Fungi Collection-CFAM at ILMD/FIOCRUZ, was evaluated. The fungal culture was cultivated in yeast extract agar and sucrose (YES) for cold extraction of the biocompounds in ethyl acetate at 28 °C for 7 days in a BOD type incubator. The obtained extract was evaluated for its antimicrobial activity against Candida albicans and Gram-positive and negative bacteria by the “cup plate” method and the determination of the minimum inhibitory concentration (MIC) by the broth microdilution method. The extract was subjected to thin layer chromatography (TLC) and fractionated by open and semipreparative column chromatography. The fractions of interest had their chemical constituents elucidated by nuclear magnetic resonance and mass spectrometry. The elucidated molecule was evaluated for cytotoxicity against the human fibroblast strain (MRC5). The extract presented inhibitory activity against both Gram-positive and negative bacteria, with the range of inhibition halos from 5.3 to 14 mm in diameter and an MIC ranging from 500 to 15.6 μg/mL. Seventy-one fractions were collected and TLC analysis suggested the presence of substances with double bond groups: coumarins, flavonoids, phenolic, alkaloids, and terpenes. NMR and MS analyses demonstrated that the isolated molecule was kojic acid. The results of the cytotoxicity test showed that MRC5 cells presented viability at concentrations from 500 to 7.81 μg/mL. The kojic acid molecule of Aspergillus sp., with antibacterial activity and moderate toxicity at the concentrations tested, is a promising prototype of an alternative active principle of an antimicrobial drug.

14.
International Journal of Toxicological and Pharmacological Research ; 12(4):87-97, 2022.
Article in English | EMBASE | ID: covidwho-1857331

ABSTRACT

Objective: To classify the haematological pattern, severity of anemia in children 5-12 years age admitted and to find its correlation with the clinical conditions. Methods Crossectional study of 160 patients in two years was done. Patients satisfying the inclusion criteria were selected for study. Relevant clinical data were recorded in a structured proforma including detailed history was recorded with particular symptoms suggestive of anemia such as weakness and easily fatigability, breathlessness on exertion and pica. A thorough clinical examination of every child was done followed by routine investigations for anemia Results Patients between 7-8 year were found to be the most affected. Anemia was found to be more common in female children as compared to male children (F:M=1.13). Anemia is more common in undernourished child. Most common presenting symptoms were gastrointestinal including vomiting, diarrhea and pain abdomen. Most common sign was Pallor followed by other common signs included signs of dehydration associated with diarrhea, hepatosplenomegaly. microcytic hypochromic anemia was the most common morphological type of anemia and macrocytic anemia was the least common.Thalassemia cases were most common among hemolytic anemias. Iron Deficiency Anemia (Nutritional Anemia) was the most common etiology of anemia. Conclusion Dietary deficits affect children aged 5 to 12, creating financial, emotional, and psychological burden for patients and their families, as well as depleting critical national resources. As a result, screening for these illnesses, as well as early detection of anemia and related problems, is essential.

15.
J Sep Sci ; 45(14): 2582-2590, 2022 Jul.
Article in English | MEDLINE | ID: covidwho-1850137

ABSTRACT

Favipiravir, molnupiravir, and ritonavir have been recently approved as the first oral antivirals for treatment of SARS-CoV-2 viral infections. Their combination was reported in several clinical studies, alternatively, to enhance the viral eradication and improve patient's recovery times and rates. Being all orally administered, therefore, the development of new sensitive and validated methodologies for their simultaneous determination is a necessitate. In the proposed research, a sensitive, selective, and simple high-performance thin layer chromatography method was developed and validated for determination of favipiravir, molnupiravir, and ritonavir. Silica gel 60F254 thin layer chromatography plates were used as stationary phase for this separation using mobile phase composed of methylene chloride:ethyl acetate:methanol:25% ammonia (6:3:4:1, v/v/v/v). Densitometric detection was performed at wavelength 289 nm. Peaks of favipiravir, molnupiravir, and ritonavir were resolved at retention factors 0.22, 0.42, and 0.63, respectively. The proposed method was found linear within the specified ranges of 3.75-100.00 µg/mL for molnupiravir and favipiravir, and 2.75-100.00 µg/mL for ritonavir. Limits of detection were found to be 1.12, 1.21, and 0.89 µg/mL for favipiravir, molnupiravir, and ritonavir, respectively. This is the first method to be reported for the simultaneous determination of the cited three antiviral drugs. The method was assessed on novel greenness metrics.


Subject(s)
COVID-19 Drug Treatment , Ritonavir , Amides , Antiviral Agents , Chromatography, High Pressure Liquid/methods , Chromatography, Thin Layer/methods , Cytidine/analogs & derivatives , Drug Compounding , Humans , Hydroxylamines , Pyrazines , Reproducibility of Results , SARS-CoV-2
16.
Open Access Macedonian Journal of Medical Sciences ; 10(T8):108-113, 2022.
Article in English | EMBASE | ID: covidwho-1798852

ABSTRACT

BACKGROUND: Supplements that contain antioxidants may enhance prevention and treatment effects of a wide range of diseases including COVID-19. Quercetin, a flavonoid compound, is a natural antioxidant that can neutralize free radicals. AIM: The present study was conducted to formulate Moringa leaf (Moringa oleifera L.) ethanol extract capsules and to determine the quercetin antioxidant activity levels of Moringa ethanol extract capsule formulations. MATERIALS AND METHODS: We tested the total flavonoid levels in solutions with concentrations of 20, 50, 60, 70, and 100 ppm using thin-layer chromatography densitometric method. Evaluation of physical properties of 96% Moringa leaf ethanol extract capsules included moisture content test, granule angle of repose test, granule flow property test, capsule weight uniformity test, and capsule disintegration time test. Antioxidant activity test using the 2,2-diphenyl-1-picryl-hydrazyl-hydrate method with two samples, namely, 96% Moringa leaf ethanol extract capsules with formulas I, II, and III, quercetin as a comparison. RESULTS: The results of the evaluation of 96% Moringa leaf ethanol extract capsules showed that formula II (polyvinylpyrrolidone 50 mg) had good physical properties. Testing the antioxidant activity of capsules of the ethanol extract of Moringa leaves formulas I, II, and III, quercetin obtained IC50 values of 44.0 ppm, 40.2 ppm, 46.4 ppm, and 4.80 ppm, respectively. CONCLUSION: The evaluation of the ethanol extract capsules of Moringa leaf formula II met the parameters of a good capsule evaluation test requirement and had very strong antioxidant activity seen from the acquisition of the IC50 value. The antioxidant properties of Moringa leaf extract capsules may be able to improve the immune system and clinical trials need to be carried out on patients to become candidates for prevention and therapeutic supplement for a range of diseases including COVID-19.

17.
Food Chem X ; 14: 100302, 2022 Jun 30.
Article in English | MEDLINE | ID: covidwho-1796842

ABSTRACT

Kombucha, originated in China 2000  years ago, is a sour and sweet-tasted drink, prepared traditionally through fermentation of black tea. During the fermentation of kombucha, consisting of mainly acidic compounds, microorganisms, and a tiny amount of alcohol, a biofilm called SCOBY forms. The bacteria in kombucha has been generally identified as Acetobacteraceae. Kombucha is a noteworthy source of B complex vitamins, polyphenols, and organic acids (mainly acetic acid). Nowadays, kombucha is tended to be prepared with some other plant species, which, therefore, lead to variations in its composition. Pre-clinical studies conducted on kombucha revealed that it has desired bioactivities such as antimicrobial, antioxidant, hepatoprotective, anti-hypercholestorelomic, anticancer, anti-inflammatory, etc. Only a few clinical studies have been also reported. In the current review, we aimed to overhaul pre-clinical bioactivities reported on kombucha as well as its brief compositional chemistry. The literature data indicate that kombucha has valuable biological effects on human health.

18.
Molbank ; 2022(1), 2022.
Article in English | ProQuest Central | ID: covidwho-1765778

ABSTRACT

Herein we report the obtaining of 1-(3,4-dihydroquinolin-1(2H)-yl)-2- (4-isobutylphenyl)propan-1-one and its characterization. The newly obtained hybrid and its derivatives (hybrids of ibuprofen with 1,2,3,4-tetrahydroisoquinoline, and piperidine) were screened for their in vitro antioxidant, antitryptic, and inhibition of albumin denaturation activity. The lipophilicity was established using both reversed-phase thin layer chromatography and in silico calculations.

19.
Emirates Journal of Food and Agriculture ; 33(10):893-898, 2021.
Article in English | ProQuest Central | ID: covidwho-1687467

ABSTRACT

High performance thin layer chromatography (HPTLC) analysis was used to analyze boeravinone B production in shoot cultures of Boerhaavia diffusa under the influence of different biotic [yeast extract (YE), cellulase (CL)] and abiotic [salicylic acid (SA), jasmonic acid (JA)] signal molecules at different concentrations. Biomass accumulation and boeravinone B production in shoot cultures raised on agar solidified medium were analysed for a period of 30 days to optimize the suitable age of culture for treatment with signal molecules. A maximum yield of boeravinone B (5.74 %) was obtained after 7 days and therefore treatments were performed at a gap of 3, 6 and 9 days. Signal molecules used at varied concentrations differentially influenced the shoot cultures for biomass regeneration and culture growth. Cellulase treatment (0.5 mgl-1) resulted in maximizing biomass (1.30gm) and boeravinone B content (22.7 %) after 6 days of exposure time as compared to other treatments used in the study. Thus the current study can be exploited further for enhancement of boeravinone B from shoot cultures of Boerhaavia diffusa.

20.
Biochemical and Cellular Archives ; 21(2):4847-4854, 2021.
Article in English | EMBASE | ID: covidwho-1614921

ABSTRACT

Fused pyrimidines gain an increasing interest as being a precursor for biologically active new compounds. The fused pyrimidine derivatives (1-5) were prepared by condensation of the 1,8-diamine naphthalene with some medical compounds in the presence of ammonium chloride as a dehydration agent for the water molecule and toluene as a solvent. Mannich base compounds (6-10) were prepared by reacting pyrimidines (1-5) with formaldehyde and 4-methoxyaniline. A microwave method was used in preparing the compounds. The prepared compounds were characterized by physical methods, through melting points and color, as well as by spectroscopic methods such as FT-IR and 1H-NMR. The purity of the prepared compounds was evaluated using TLC. The bioactivity of these compounds was tested against two types of bacteria, i.e. Escherichia coli and Staphylococcus aureus. The results of bioactivity showed an antibacterial activity compared to the standard drugs Cephalexin and Amoxicillin. The stability of selected compounds was evaluated by laser irradiation for (10, 20, 30, 40) seconds, and was found to be stable and did not decompose with a 30 seconds exposure. On the other hand, their color was changed at 40 seconds of exposure. Molecular docking studies were conducted to examine how some of the synthesized compounds bind to the putative target, SARS COV2 RNA-dependent RNA polymerase. The study concluded that some of the prepared compounds showed promising antibacterial and antiviral bioactivities. Further in vitro and in vivo toxicological and pharmacological studies are required to evaluate the possibility of using these compounds as a medicine.

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