ABSTRACT
OBJECTIVE:To optimize the water extraction technology of Yinju jiedu oral liquid,and provide reference for the industrial production of the preparation. METHODS:According to the investigation of extraction time-extraction rate curves of chlo-rohenic acid of Yinju jiedu formula and extraction rate of chlorohenic acid in Lonicera japonica and other combined medicinal mate-rials in the formula,decoction methods and time of L. japonica were determined. Using the comprehensive scores of linarin,harpa-goside,(R,S)-epigoitrin,psoralen+angelicin contents and dry extraction yield as indexes,L9(34)orthogonal test was designed to detect the effects of adding water amount,decoction time times and optimize the extraction technology of the residues and other me-dicinal materials. Verification test was conducted. RESULTS:The optimal technology was L. japonica decocted first for 30 min with 8-fold water;the residues and other medicinal materials were decocted with 8-fold water for 3 times,1 h each time;combin-ing all the syrups. In verification test,the average contents of chlorohenic acid,linarin,harpagoside,(R,S)-epigoitrin,psoralen+angelicin were respectively 34.51,10.31,1.97,0.21,9.79 mg/g(RSD=1.24％,1.19％,1.40％,1.71％,1.28％,n=3);aver-age dry extraction yield was 25.4％(RSD=1.64％,n=3);average extraction rate of chlorohenic acid was 78.95％(RSD=1.24％,n=3). CONCLUSIONS:In the optimized water extraction technology,both the extraction rate of chlorohenic acid and contents of other ingredients are relatively high. The technology is stable and feasible.
ABSTRACT
INTRODUCTION: extraction of bioactive compounds from vegetable materials is a classical operation applied in many industrial processes. Few studies have made reference to processes to obtain extracts from Punica granatum. This fruit is generally consumed as such or as fermented juices. In Cuba, it is known as grenade and numerous studies have shown antiviral, antioxidant and antimicrobial properties. Maceration process is the main used technology in the preparation of extracts from Punica granatum fruit, being this a long and expensive process. Ultrasound-assisted extractions have been proven to significantly decreased extraction time and increased extraction yields in many vegetable materials. However, few papers report the use of this methodology in the extraction processes of Punica granatum. OBJECTIVE: to evaluate an ultrasound-assisted extraction process to extract polyphenols from Punica granatum fruit. METHODS: an experimental surface, response 32, randomized and replicate design was made to identify the effect of the extraction time and the alcoholic concentration of the menstruum as well as an extraction study in the course of time, keeping the best extraction conditions set in the design. RESULTS: the studied parameters did not show significant influence over the process (p= 0.0981 and p= 0.8504 for time of extraction and alcoholic content, respectively). The behaviour curve of the polyphenol extraction in time showed that top concentration values were reached at 60 minutes. CONCLUSIONS: according to results, the optimal conditions of polyphenol extraction were as follows: extraction time of 60 min, and 50 percent alcoholic concentration (v/v) as menstruum(AU)
INTRODUCCIÓN: la extracción de compuestos bioactivos a partir de material vegetal es una operación clásica aplicada en muchos procesos industriales. Pocos estudios han hecho referencia a la obtención de extractos a partir de la fruta del Punicam granatum. Esta fruta es generalmente consumida en forma natural o en jugos fermentados. En Cuba es conocida como granada y numerosos estudios han demostrado sus propiedades antivirales, antioxidantes y antimicrobianas. La maceración es el principal proceso empleado en la elaboración de extractos a partir de esta fruta, siendo un proceso largo y costoso. La extracción asistida por ultrasonido es una metodología que garantiza una disminución del tiempo de extracción e incrementa los rendimientos extractivos en muchos materiales. Sin embargo, pocos trabajos informan el empleo de esta metodología en procesos extractivos a partir de P. granatum. OBJETIVO: evaluar un proceso de extracción asistida por ultrasonido para extraer los polifenoles de la fruta P. granatum. MÉTODOS: se realizó un diseño experimental de superficie respuesta 32 aleatorizado replicado en el punto central, para estudiar la influencia del tiempo de extracción y la concentración alcohólica del menstruo. Así como un estudio de extracción en el tiempo manteniendo las mejores condiciones establecidas en el diseño. RESULTADOS: los parámetros estudiados no presentaron una influencia significativa para el proceso (p= 0,0981 y p= 0,8504 para el tiempo de extracción y la concentración alcohólica del menstruo, respectivamente). La curva del comportamiento de la extracción de polifenoles en el tiempo demostró que a los 60 min se alcanzaban valores máximos de concentración. CONCLUSIONES: de acuerdo con los resultados, las condiciones óptimas de extracción fueron: tiempo de extracción 60 min y solución hidroalcohólica al 50 por ciento (v/v) como menstruo(AU)