Miyata Y, Tanaka T, Tamaya K, et al.
Cholesterol-lowering effect of black tea polyphenols, theaflavins, theasinensin A and thearubigins, in rats fed high fat diet[J].
Food Science and Technology Research, 2011, 17(6): 585-588.
Rats were fed a high fat diet containing 0.2% black tea polyphenols, theaflavins, theasinensin A or thearubigins for 4 weeks. The hepatic cholesterol concentration was significantly lower in rats fed the theaflavins, theasinensin A or thearubigins diet than in those fed the control diet without black tea polyphenols. Theasinensin A and thearubigins significantly accelerated fecal neutral and acidic steroid excretion, respectively. These results suggest that theasinensin A and thearubigins might induce the hepatic cholesterol-lowering activity through the promotion of fecal steroid excretion.