不同提取条件对显齿蛇葡萄总黄酮浸提率的影响

【摘要】 以水溶性活性成分总黄酮和水浸提率作为衡量浸提效果的评价指标,分别采用单因素和正交实验L9(34)确定了茶水比、浸提温度、浸提时间和样叶粒度对显齿蛇葡萄总黄酮和水浸提率的影响,得出了影响的主次顺序为茶水比、浸提温度、样叶粒度和浸提时间。并结合生产实际提出了茶汤浸提的最佳提取条件为:茶水比为1∶20、浸提时间为20min、浸提温度为90℃。最优浸提条件下的浸提次数实验表明,该茶易冲泡,总黄酮和水浸提率的第一次浸出率达75.87%和80.56%。更多还原

【Abstract】 The effects of the ratio of water and the sample(A), extracting temperature(B), extracting time(C), and the sample particle size (D) on water-soluble active ingredients of Ampelopsis grossedentata were investigated with single factor and orthogonal experiments as a measure of total flavones and water extraction ratio. The orthogonal experiments revealed that the influences of four factors on total flavones and water extraction ratio were in the order of A, B, D, and C. According to the practical processing, the excellent method for extraction was modified to A2B2C1D1, that is to say, water and the sample is 1∶20, the extracting time is 20min, the extracting temperature is 90℃. The extracting times indicated that Ampelopsis grossedentata was perdurable to dunk and the water extraction ratio was very high under the optimum extracting conditions. The total flavones and water extraction ratio attained to 75.87% and 80.56% at the first time, respectively.更多还原