英语翻译目的:从葡萄叶中提取总黄酮.方法:采用正交试验法研究葡萄叶总黄酮的最佳提取工艺条件,考察了乙醇浓度、回流温度、回流时间及料液比四因素对葡萄叶总黄酮提取率的影响.结果:确立了葡萄叶总黄酮最佳提取条件为:45 %的乙醇为溶剂、液料比为1∶40、提取温度为60 ℃、提取时间2h ,在最佳工艺条件下葡萄叶总黄酮含量为5.329mg/g.

Objective: extracting total flavone from grape leaves. Method: the orthogonal test method study of grape leaf total flavonoids extraction process conditions, examines the ethanol concentration, reflux temperature, extraction time and ratio of solid to liquid four factors on grape leaf total flavone extraction rate influence. Results: establish grape leaf total flavone extraction conditions are as follows:45% ethanol as solvent, liquid ratio is 1:40, extraction temperature, extraction time602h, the optimum conditions of grape leaf total flavonoids content was 5 329mg / g.