Extracts of raw and ripe Pu-erh tea were prepared from tea dust during processing. The antioxidtive activities of extracts were evaluated by ABTS and FRAP systems. The potentially protective effects of extracts on human umbilical vascular endothelial cells(HUVEC) were investigated in Na2S2O3-induction model. The results showed that the extract of raw Pu-erh tea had stronger antioxidtive activity than that of ripe Pu-erh tea in both test systems. But extract of ripe Pu-erh tea showed a less protective effect than that of extract of raw Pu-erh tea on the HUVEC cell damage induced by Na2S2O3, and relevent with tea polyphenols under certain concentrations.
WANG Yue-fei
,
LUO Zi-hua
,
WU Xin-rong
,
CHEN Hong-bo
,
XU Ping
,
YANG Xian-qiang
. Antioxidtive Activities of Pu-erh Tea Extracts and Their Protective Effect on HUVEC Damage Induced by Na2S2O3[J]. Journal of Tea Science, 2010
, 30(6)
: 475
-481
.
DOI: 10.13305/j.cnki.jts.2010.06.012
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