FOOD SCIENCE ›› 2005, Vol. 26 ›› Issue (8): 367-370.

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Determination of Catechin in Black Teas and Its Antioxidation Effect

 HOU  Dong-Yan, HUI  Rui-Hua, LIU  Xiao-Yuan, TANG  Rui, ZHU  Yong-Qiang   

  1. 1.Department of Chemistry,Anshan Normal University; 2.Department of Chemistry,Liaoning Normal University; 3. Liaoning Longxing Biologe Science and Technology Co. Ltd.
  • Online:2005-08-15 Published:2011-09-19

Abstract: Determination of catechin in black teas by three wavelength spectrophotometry, The recovery is 94%~105% and thec oefficient ofv ariationi s1 .00% .A ntioxygenica ctivityo fb lackt eas teasw ass tudied byt he flow-injectionc hemiluminescence. The results show that black teas are abundant in the catechin compounds and strong antioxidative effect.

Key words: black teas, catechin, flow-injection chemiluminescence method, antioxidation effect