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Corn silk extracts did not alter the adiposity and underlying substrate utilization in high-fat diet-induced obese C57BL/6 mice

한국식품과학회지 2020년 52권 2호 p.144 ~ 148
강은영 ( Kang Eun-Young ) - Hanyang University Department of Food and Nutrition

김현경 ( Kim Hyun-Kyung ) - Hanyang University Department of Food and Nutrition
 ( Moyo Knowledge Mudhibadhi ) - Hanyang University Department of Food and Nutrition
강경옥 ( Gang Gyoung-Ok ) - Texas A&M University Department of Animal Science
김우기 ( Kim Woo-Ki ) - Kyung Hee University Department of Food Science and Biotechnology
고광웅 ( Go Gwang-Woong ) - Hanyang University Department of Food and Nutrition

Abstract


Corn silk (Okmi-su) was anciently adopted as a material for tea or beverage. Corn silk extracts (CSE) contain bioactive phytochemicals such as phenolic acid, flavonoids, ascorbic acid, tannins, and glycosides. Under the impact of these functional components, CSE has benefits for antioxidation, diuresis, anti-diabetes, and dyslipidemia recovery. Nonetheless, its role in whole-body adiposity was not investigated; therefore, the effects of CSE on obesity were evaluated in high-fat diet-induced obese mice. Mice were assigned to either group (n=12); 1) normal diet (18% kcal from fat), 2) high-fat diet (45% kcal from fat, the control), 3) high-fat diet with CSE (800 mg/kg diet), and 4) high-fat diet with orlistat (500 mg/kg diet, a comparable control for weight loss). Our results showed that body weight, adiposity, and energy expenditure in obese mice were not altered by CSE. Lean body mass tended to decrease by CSE, which can be explained by stimulation of diuresis (p=0.06). In conclusion, our results suggest that dietary consumption of CSE does not influence the adiposity and underlying substrate utilization in high-fat diet-induced obese mice.

키워드

corn silk extracts; adiposity; energy expenditure; respiratory quotient; lean body mass; dual-energy X-ray absorptiometry
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