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Comparative studies on the hypolipidemic and growth suppressive effects of oolong, black, pu-erh, and green tea leaves in rats.
J Agric Food Chem. 2005 Jan 26; 53(2):480-9.JA

Abstract

The four major commercial teas, oolong, black, pu-erh, and green teas, have been manufactured in southeast Asia. In this study, we evaluated the growth suppressive and hypolipidemic effect of these four different tea leaves by oral feeding to male Sprague-Dawley rats for 30 weeks. The results showed that the suppression of body weights of tea leaves-fed groups were in the order: oolong tea > pu-erh tea > black tea > green tea. Pu-erh tea and oolong tea could lower the levels of triglyceride more significantly than that of green tea and black tea, but pu-erh tea and green tea were more efficient than oolong tea and black tea in lowering the level of total cholesterol. In lipoprotein, 4% pu-erh tea could increase the level of HDL-C and decrease the level of LDL-C, but other teas simply decrease the levels of both. The activity of antioxidant enzyme SOD is increased in all tea-fed groups as compared to the basal diet-fed group. Finally, relative weight ratios of liver to epididylmal adipose tissue were lower in feeding oolong tea and pu-erh tea groups. On the basis of these findings, it seemed that the fully fermented pu-erh and black tea leaves and partially fermented oolong tea leaves were more effective on their growth suppressive and hypolipidemic effects as compared to the nonfermented green tea leaves.

Authors+Show Affiliations

Wun-Shan Branch, Tea Research and Extension Station, Taipei, Taiwan.No affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Comparative Study
Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

15656692

Citation

Kuo, Kuan-Li, et al. "Comparative Studies On the Hypolipidemic and Growth Suppressive Effects of Oolong, Black, Pu-erh, and Green Tea Leaves in Rats." Journal of Agricultural and Food Chemistry, vol. 53, no. 2, 2005, pp. 480-9.
Kuo KL, Weng MS, Chiang CT, et al. Comparative studies on the hypolipidemic and growth suppressive effects of oolong, black, pu-erh, and green tea leaves in rats. J Agric Food Chem. 2005;53(2):480-9.
Kuo, K. L., Weng, M. S., Chiang, C. T., Tsai, Y. J., Lin-Shiau, S. Y., & Lin, J. K. (2005). Comparative studies on the hypolipidemic and growth suppressive effects of oolong, black, pu-erh, and green tea leaves in rats. Journal of Agricultural and Food Chemistry, 53(2), 480-9.
Kuo KL, et al. Comparative Studies On the Hypolipidemic and Growth Suppressive Effects of Oolong, Black, Pu-erh, and Green Tea Leaves in Rats. J Agric Food Chem. 2005 Jan 26;53(2):480-9. PubMed PMID: 15656692.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Comparative studies on the hypolipidemic and growth suppressive effects of oolong, black, pu-erh, and green tea leaves in rats. AU - Kuo,Kuan-Li, AU - Weng,Meng-Shih, AU - Chiang,Chun-Te, AU - Tsai,Yao-Jen, AU - Lin-Shiau,Shoei-Yn, AU - Lin,Jen-Kun, PY - 2005/1/20/pubmed PY - 2005/3/18/medline PY - 2005/1/20/entrez SP - 480 EP - 9 JF - Journal of agricultural and food chemistry JO - J. Agric. Food Chem. VL - 53 IS - 2 N2 - The four major commercial teas, oolong, black, pu-erh, and green teas, have been manufactured in southeast Asia. In this study, we evaluated the growth suppressive and hypolipidemic effect of these four different tea leaves by oral feeding to male Sprague-Dawley rats for 30 weeks. The results showed that the suppression of body weights of tea leaves-fed groups were in the order: oolong tea > pu-erh tea > black tea > green tea. Pu-erh tea and oolong tea could lower the levels of triglyceride more significantly than that of green tea and black tea, but pu-erh tea and green tea were more efficient than oolong tea and black tea in lowering the level of total cholesterol. In lipoprotein, 4% pu-erh tea could increase the level of HDL-C and decrease the level of LDL-C, but other teas simply decrease the levels of both. The activity of antioxidant enzyme SOD is increased in all tea-fed groups as compared to the basal diet-fed group. Finally, relative weight ratios of liver to epididylmal adipose tissue were lower in feeding oolong tea and pu-erh tea groups. On the basis of these findings, it seemed that the fully fermented pu-erh and black tea leaves and partially fermented oolong tea leaves were more effective on their growth suppressive and hypolipidemic effects as compared to the nonfermented green tea leaves. SN - 0021-8561 UR - https://www.unboundmedicine.com/medline/citation/15656692/Comparative_studies_on_the_hypolipidemic_and_growth_suppressive_effects_of_oolong_black_pu_erh_and_green_tea_leaves_in_rats_ L2 - https://dx.doi.org/10.1021/jf049375k DB - PRIME DP - Unbound Medicine ER -