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KMID : 0613820140240080827
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Journal of Life Science
2014 Volume.24 No. 8 p.827 ~ p.836
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Antiobesity Effect of Citrus Peel Extract Fermented with Aspergillus oryzae
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Jeon Hyun-Joo
Yu Sun-Nyoung
Kim Sang-Hun
Park Sul-Gi
Choi Hyeun-Deok
Kim Kwang-Yeon
Lee Sun-Yi
Chun Sung-Sik
Ahn Soon-Cheol
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Abstract
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There is a rising trend in obesity due to various factors, including changes in eating habits, lack of exercise, and genetic and psychological factors. Citrus peel has been reported to prevent obesity via antioxidative, antihypertensive, and LDL cholesterol-lowering effects. This study investigated the effects of citrus peel extract fermented with or without Aspergillus oryzae in a mouse model of diet-induced obesity. The animals were divided into four groups: a high-fat diet group (HFD), a normal fat diet (NFD) group, a citrus peel extract (CP) group, and a citrus peel extract fermented with A. oryzae (CPA) group. The citrus peel extract improved lipid metabolism and weight loss in the high-fat diet-induced obese mouse model. As expected, the body weight was higher in the HFD group compared with the NFD, CP, and CPA groups. However, the concentrations of total cholesterol (TG) and triglyceride (TC) in the serum and liver of the CP and CPA groups were lower than in the HFD group. There were no significant differences in the HDL cholesterol concentration among the groups. Taken together, our results suggest that extract of citrus peel biotransformed with A. oryzae had more antiobesity activity than citrus peel not transformed by A. oryzae through the fermentation of metabolites.
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KEYWORD
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Anti-obesity, Aspergillus oryzae, biotransformed, citrus peel, serum lipids
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