Determination and comparison of major bioactive substances in four types of teas
Understand the nutritional value of four teas by comparing their content of major bioactive substances.The con-tent of tea polyphenols,theanine,vitamin E,vitamin C,copper,zinc,selenium,manganese,calcium and magnesium in green,black,oolong and dark teas were detected and compared,the statistical analysis tool was SPSS 26.0.The results show that,Tea polyphenols:green tea＞black tea,green tea＞dark tea,oolong tea＞dark tea(P＜0.05);Theanine:green tea＞black tea,green tea＞dark tea,oolong tea＞black tea(P＜0.05);Vitamin C:green tea＞black tea,green tea＞oolong tea,green tea＞dark tea(P＜0.05);Vitamin E:oolong tea＞green tea＞dark tea＞black tea(P＜0.05);Copper:green tea＞oolong tea,dark tea＞black tea＞oolong tea(P＜0.05);Zinc:green tea＞black tea＞dark tea＞oolong tea(P＜0.05);Selenium:oolong tea＞black tea＞dark tea,oolong tea＞black tea＞green tea(P＜0.05);Manganese:dark tea＞green tea,oolong tea＞green tea(P＜0.05);Calcium:dark tea＞black tea＞oolong tea＞green tea(P＜0.05);Magnesium:dark tea＞oolong tea＞black tea,dark tea＞green tea＞black tea(P＜0.05).Different teas have different contents of bioactive substances and each has its own advantages,so you can choose the right variety of tea ac-cording to your own health needs.
万方数据
维普
