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http://dx.doi.org/10.5352/JLS.2012.22.5.671

Anti-Obesity Effect of Red Garlic Composites in Rats Fed a High Fat-Cholesterol Diet  

Lee, Soo-Jung (Department of Food Science and Nutrition, Institute of Agriculture and Life Sciences, Gyeongsang National University)
Hwang, Cho-Rong (Namhae Garlic Research Institute)
Kang, Jae-Ran (Department of Food Science and Nutrition, Institute of Agriculture and Life Sciences, Gyeongsang National University)
Shin, Jung-Hye (Namhae Garlic Research Institute)
Kang, Min-Jung (Namhae Garlic Research Institute)
Sung, Nak-Ju (Department of Food Science and Nutrition, Institute of Agriculture and Life Sciences, Gyeongsang National University)
Publication Information
Journal of Life Science / v.22, no.5, 2012 , pp. 671-680 More about this Journal
Abstract
Three kinds of dietary composites-R+T, R+F, and R+TF-were combined in green tea (T), dietary fiber (F), and green tea dietary fiber mixture (TF) to red garlic extract (RG), respectively. The effects of their diets on anti-obesity were investigated $in$ $vitro$ and $in$ $vitro$ in obese rats induced high fat-cholesterol. In $in$ $vivo$ rats, the total phenolic content of the R+T and R+TF was 1.9~2.0 times higher, and their total cholesterol adsorption was 9.5~11.5 times higher than that of RG. $In$ $vivo$, male Sprague-Dawley rats were divided into 6 groups (Normal, HFC, HRG, HR+T, HR+F and HR+TF). Afterwards, the diets of the HRG, HR+T, HR+F, and HR+TF groups were supplemented with 1% of RG and its dietary composites (R+T, R+F, and R+TF) for 4 weeks, respectively. The final body weight of the HRG, HR+T, HR+F, and HR+TF groups decreased significantly compared to the group fed high fat-cholesterol (HFC), but the food efficiency ratio was not significantly different from the HFC group. The liver weight of the HFC group doubled compared to the normal group, whereas that of HR+T and HR+TF groups decreased significantly. The weight of visceral and epididymal fat decreased significantly in the groups fed the composites compared to the HFC group. The obesity index of HR+TF group decreased significantly only when compared to the HFC group. The serum lipid profile such as total lipids, cholesterol, triglyceride, LDL- and VLDL-cholesterol, as well as the atherogenic index and cardiac risk factors decreased drastically in all experimental groups compared to the HFC group, and the levels of HR+T, HR+F and HR+TF groups were a similar trend. GPT activity was not significantly different among the groups fed the composites, and it decreased significantly in the HRG group. The content of the lipid peroxide level decreased significantly in the HRG group and in the groups fed the composites, compared to the HFC group. Serum antioxidant activity was the highest in the HR+T group. We suggest that the hypolipidemic and anti-obesity effect of the RG composites, achieved by mixing green tea extract and/or dietary fiber, was due to their total phenolic content and total cholesterol adsorption effect.
Keywords
Red garlic composites; serum lipids; anti-obesity; total phenol;
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