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Anti-obesity effect of Auricularia spp.

목이버섯의 항비만 효과

  • Park, Kun Hee (Department of Food science and Biotechnology, Sungkyunkwan University) ;
  • Kim, Kil-ja (Crop Research Division, Jeollanamdo Agricultural Research & Extension Services) ;
  • Jang, Kab Yeul (Mushroom Research Division, National Institute of Horticultural & Herbal Science, Rural Development Administration) ;
  • Park, Kimoon (Department of Food science and Biotechnology, Sungkyunkwan University)
  • 박건희 (성균관대학교 식품생명공학과) ;
  • 김길자 (전라남도 농업기술원 식량작물연구소) ;
  • 장갑열 (농촌진흥청 국립원예특작과학원 버섯과) ;
  • 박기문 (성균관대학교 식품생명공학과)
  • Received : 2018.02.27
  • Accepted : 2018.06.26
  • Published : 2018.06.30

Abstract

The purpose of this study is to discover a food material having anti-obesity effects and to disseminate information on the effects of the material to people who are interested in anti-obesity. For this study, 11 kinds of Auricularia (wood ear) spp., including 8 strains of Auricularia auricula-polytricha, and 3 strains of A. auricula-judae, were presented by the Jeollanamdo Agricultural Research & Extension Services. 3T3-L1 (preadipocyte cell) was used for identifying the inhibition effect on adipocyte differentiation. As a result, this study found that all the extracts had slightly different degrees of inhibition effects on adipocyte differentiation. Among the A. auricula-polytricha strains, strain 21001 showed the most significant effect (4.58%), and the inhibition effect of strain 21002 (4.43%) was the greatest among A. auricula-judae strains. Overall, the inhibition effect of A. auricula-polytricha strains was greater than that of A. auricula-judae strains. The results of mRNA and protein analysis also demonstrated that the inhibition effect of A. auricula-polytricha 21001 was superior to that of any other strains. An in vivo study using 56 ICR mice (6w, male), was performed for 4 weeks. A. auricula-polytricha 21001, which exhibited the most significant effect in the in vitro study was used to compose six different types of feeds. Daily body weight gain of the high-fat diet containing 0.2% 21001 extract feeding group was $0.22{\pm}0.08g$ (*p < 0.05), and it was 31.25% lower than that of the high-fat diet feeding group ($0.32{\pm}0.06$). Internal organ weight measurement and blood analysis were performed immediately after animal sacrifice. The results proved that treatment with more than 0.1% of A. auricula-polytricha strain 21001 could significantly reduce (more than *p < 0.05) the weight of liver and epididymal fat, and levels of glucose, total cholesterol, AST, and ALT in blood.

Keywords

Auricularia auricula-polytricha;Auricularia auricula-judae;anti-obesity

Acknowledgement

Supported by : 농촌진흥청

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