摘要
Abstract
In order to study the effect of superfine tea powder on the antioxidant property of wheat germ solid beverage, the different levels of superfine tea powder (3%, 5%, 7%, 10%) were added in the wheat germ solid beverage.The wheat germ solid beverage without the addition of superfine tea powder was the control sample, the accelerated storage experiment was adopted.The content of peroxide, composition of fatty acid, malondialdehyde content, polyphenol content, DPPH· scavenging ability, ABTS+· scavenging ability and content of VE were detected.The results showed that superfine tea powder could improve the antioxidant properties of wheat germ solid beverage and prolong its shelf life.With the increase of superfine tea powder, the antioxidant capacity of wheat germ solid beverage was significantly enhanced.After 56 days of accelerated storage, the peroxide values of wheat germ solid beverage with superfine tea powder (3%, 5%, 7%, 10%) were 32.27, 29.46, 26.12 and 26.23 meq/kg, respectively, which was obviously lower than the control group(33.08 meq/kg).The MDA contents of wheat germ solid beverage with addition of superfine tea powder (3%, 5%, 7%, 10%) were 0.181, 0.173, 0.162 and 0.152 mg/kg, respectively, all of which were significantly lower than that of control (0.188 mg/kg) (P<0.05).In addition, the content of unsaturated fatty acid and VE as well as polyphenols retention rate were higher than that of control group.关键词
麦胚/超微茶粉/抗氧化/固体饮料Key words
wheat germ/superfine tea powder/antioxidant/solid beverage
