通过单因素试验和L_9(3~4)正交实验,并利用微波技术从凤凰茶叶中提取茶多糖;分别研究了料水比、微波时间、微波功率、以及浸提次数和浸提温度对提取凤凰茶多糖含量的影响。结果表明:凤凰茶多糖适宜的提取条件为料水比1:40(g·mL)、微波时间120s、微波功率80%(640W)、浸提次数2次、浸提温度75℃,其中微波功率是最主要影响因素,其次是料水比和浸提次数,微波时间和浸提温度对提取的影响较小。

Microwave was applied to extract polysaccharides from Phoenix tea.Single-factor test and L_9(3~4) orthogonal experimental was used in study the influence factors of the solid-liquid ratio,microwave extraction time,microwave power,times of extraction and temperature on the content of polysaccharide.Experimental results showed that:the best extraction of Phoenix tea's polysaccharides conditions were 1:40 solid-liquid ratio,extraction time 120s,microwave power of 80%(640W),2 times,and 75℃.Microwave power is the most important factor,followed by the solid-liquid ratio and times of extraction,extraction time and temperature.