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Inhibitory Effect of Cell Differentiation against 3T3-L1 Pre-Adipocytes and Angiotensin Converting Enzyme (ACE) Activity of Ice Plant (Mesembryanthemum crystallinum)

아이스플랜트(Mesembryanthemum crystallinum)의 3T3-L1 전지방세포 분화 및 Angiotensin-Converting Enzyme(ACE) 활성 억제

  • Kang, Seung Mi (Division of Food Science, Gyeongnam National University of Science & Technology) ;
  • Kim, Seon Jeong (Division of Food Science, Gyeongnam National University of Science & Technology) ;
  • Nam, Sanghae (Division of Food Science, Gyeongnam National University of Science & Technology)
  • 강승미 (경남과학기술대학교 식품과학과) ;
  • 김선정 (경남과학기술대학교 식품과학과) ;
  • 남상해 (경남과학기술대학교 식품과학과)
  • Received : 2017.02.28
  • Accepted : 2017.07.24
  • Published : 2017.08.31

Abstract

Mesembryanthemum crystallinum (Family: Aizoaceae) is an annual plant consisting of ice crystal-shaped bladder cells, which is responsible for its common name ice plant. This study investigated biological activities according to general components and extraction solvent in order to examine the functionality of ice plant. The total content of free amino acids was 32.57 mg/g, including 4.64 mg/g of L-alanine as the most abundant and 2.60 mg/g of ${\gamma}$-aminobutyric acid. Regarding angiotensin converting enzyme inhibitory activities of solvent fractions of ice plant, ethyl acetate fraction and chloroform fraction showed activities of $33.17{\pm}3.20{\sim}88.19{\pm}3.20%$ and $23.72{\pm}2.89{\sim}86.78{\pm}2.24%$, respectively, similar to $Captopril^{(R)}$ ($19.51{\pm}3.44{\sim}84.72{\pm}1.06%$) and $Enalapril^{(R)}$ ($24.93{\pm}1.12{\sim}91.32{\pm}3.62%$) as positive control groups. Regarding inhibition of lipid droplet production in 3T3-L1 preadipocytes by ice plant, anti-adipogenic activities were $53.00{\pm}0.45{\sim}65.75{\pm}0.31%$ and $44.16{\pm}0.29{\sim}63.32{\pm}0.36%$ in the ethyl acetate fraction and butanol fraction, respectively, showing the lowest lipid droplet production. The chloroform fraction and hexane fraction showed activities of $38.33{\pm}0.09{\sim}56.55{\pm}0.50%$ and $31.17{\pm}0.50{\sim}55.10{\pm}1.93%$, respectively, whereas the water fraction showed activity of $26.32{\pm}2.27{\sim}49.48{\pm}0.05%$. Therefore, all solvent fractions inhibited fat accumulation of 3T3-L1 preadipocytes according to treatment concentration. According to the results above, it would be possible to utilize ice plant as a new health functional material.

본 연구에서는 아이스플랜트의 기능성 식품소재로의 우수성을 알아보기 위하여 유리아미노산을 분석하고 추출용매에 따른 ACE 저해 활성과 3T3-L1 전지방세포에 대한 분화 억제 활성을 검증하였다. 아이스플랜트의 유리아미노산 총 함량은 32.57 mg/g이었으며, L-alanine 4.64 mg/g으로 가장 많이 함유되어 있었고 혈압저하 및 이뇨효과를 가지는 ${\gamma}$-aminobutyric acid는 2.60 mg/g을 함유한 것으로 나타났다. 아이스플랜트 용매분획별 ACE 저해 활성은 ethyl acetate 분획과 chloroform 분획에서 각각 $33.17{\pm}3.20{\sim}88.19{\pm}3.20%$, $23.72{\pm}2.89{\sim}86.78{\pm}2.24%$로 높은 활성을 나타내었고 butanol, water 및 hexane 분획에서는 각각 $8.86{\pm}1.20{\sim}41.21{\pm}2.49%$, $3.24{\pm}1.50{\sim}36.01{\pm}1.38%$, $-2.46{\pm}0.37~31.28{\pm}2.86%$로 나타났다. Ethyl acetate 분획과 chloroform 분획은 양성대조군인 Captopril(R)($19.51{\pm}3.44{\sim}84.72{\pm}1.06%$) 및 Enalapril(R)($24.93{\pm}1.12{\sim}91.32{\pm}3.62%$)과 유사한 저해 활성을 나타내었다. 3T3-L1 지방전구세포의 지방구 생성억제 정도를 측정한 결과 ethyl acetate 분획과 butanol 분획에서 대조군에 비하여 $53.00{\pm}0.45{\sim}65.75{\pm}0.31%$$44.16{\pm}0.29{\sim}63.32{\pm}0.36%$로 가장 많이 감소하였고 chloroform 분획과 hexane 분획은 $38.33{\pm}0.09{\sim}56.55{\pm}0.50%$, $31.17{\pm}0.50{\sim}55.10{\pm}1.93%$, water 분획은 $26.32{\pm}2.27{\sim}49.48{\pm}0.05%$로 모든 분획에서 농도 의존적으로 3T3-L1 지방전구세포의 지방 축적을 억제하는 것으로 확인하였다. 이상의 결과로부터 아이스플랜트는 다양한 생리활성 물질을 함유하고 있으며, 항고혈압과 항비만의 생리활성 효과를 가지는 것을 확인하여 기능성 식품 소재로서의 가치가 뛰어나다고 판단된다.

Keywords

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