Nutrition and aroma challenges of green tea product as affected by emerging superfine grinding and traditional extraction

Food Science & Nutrition

Jianke Li¹  Pai Peng¹  Linlin Wang¹  Li Chen¹  Guowei Shu² 

[1] College of Food Engineering and Nutritional Science Shaanxi Normal University Xi’an P. R. China;School of Food and Biological Engineering Shaanxi University of Science and Technology Xi’an P.R. China;

关键词: antioxidant activity;    extraction;    green tea;    nutrition and flavor composition;    superfine grinding;   

DOI  :  10.1002/fsn3.1768

来源: DOAJ

【 摘 要 】

Abstract Green tea, superfine green tea powder (SGTP), and tea extract were prepared to determine their chemical components and antioxidant activity. The nutrition and aroma challenges of green tea during traditional extract technique and superfine grinding were profiled in this study. The traditional extract technique took advantage over superfine grinding in L‐theanine and glutamic acid (Glu) preservation, but not in other 16 essential amino acids. SGTP preserved a maximum of elements from green tea, whereas tea extract greatly changed the elements ratio. Tea extract contained higher VB2 and VC contents and doubled the tea polyphenol (TP) content in comparison with green tea and SGTP. Additionally, tea extract contained more favorable aroma compounds and maintained stronger antioxidant activity in comparison with green tea and SGTP. This study profiled an important basis for the comprehensive utilization of green tea resources by consumers and manufacturers.

【 授权许可】

Unknown