Journal of the Korean Society of Food Science and Nutrition (한국식품영양과학회지)

The Korean Society of Food Science and Nutrition (한국식품영양과학회)
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Anti-Diabetic, Alcohol-Metabolizing, and Hepatoprotective Activities of Moringa (Moringa oleifera Lam.) Leaf Extracts

모링가 잎 추출물의 항당뇨, 알코올 대사 및 간 보호 활성

  • Choi, Young Ju (Department of Food and Nutrition, College of Medical Life Sciences, Silla University) ;
  • Jung, Kyung Im (Department of Food and Nutrition, College of Medical Life Sciences, Silla University)
  • 최영주 (신라대학교 의생명과학대학 식품영양학과) ;
  • 정경임 (신라대학교 의생명과학대학 식품영양학과)
  • Received : 2016.01.29
  • Accepted : 2016.05.23
  • Published : 2016.06.30
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Abstract

This study was carried out to investigate anti-inflammatory, anti-diabetic, alcohol metabolizing, and hepatoprotective effects of hot water (MOW) and 80% ethanol (MOE) extracts from moringa (Moringa oleifera Lam.) leaf. The total phenol content of MOW and MOE were 45.49 and 63.06 mg tannic acid equivalents/g, respectively. 1,1-Diphenyl-2-picrylhydrazyl radical scavenging activities of MOW and MOE were remarkably elevated in a dose-dependent manner, and about 60.8% and 71.3% at 1 mg/mL, respectively (P<0.01). Superoxide dismutase-like activities of MOW and MOE were 2.8% and 7.4% at 5 mg/mL, respectively (P<0.05). ${\alpha}-Glucosidase$ inhibitory activity also increased in a dose-dependent manner in both extracts, and MOE was higher about two times than MOW at 5 mg/mL (P<0.001). The effects of MOW and MOE on alcohol metabolizing activity were determined by measuring generation of reduced nicotinamide adenine dinucleotide (NADH) by alcohol dehydrogenase (ADH) and acetaldehyde dehydrogenase (ALDH). ADH and ALDH activities significantly increased upon addition of MOW and MOE (P<0.05). Anti-inflammatory activity was examined in lipopolysaccharide-stimulated RAW 264.7 cells. Nitric oxide production was reduced to 32.1% and 81.2% by addition of MOW and MOE at 1 mg/mL, respectively (P<0.05). MOW and MOE showed significant protective effects against tacrine-induced cytotoxicity in Hep3B cells at $100{\mu}g/mL$. These results suggest that moringa leaf extracts have great potential as natural health products.

본 연구에서는 비타민과 단백질이 풍부하여 높은 영양가를 가지고 있으며, 콜레스테롤 제거 및 간 손상 방지와 염증, 심장병 등의 치료 효과가 있는 것으로 알려진 모링가 잎 추출물의 새로운 소재로서의 가능성을 검토하고자 항산화 활성과 항당뇨, 항염증 및 알코올분해능을 탐색하였다. 모링가 열수 및 에탄올 추출물의 총페놀 함량은 각각 45.49와 63.06 mg TAE/g으로 나타났다. 1,1-Diphenyl-2-picrylhydrazyl radical 소거능은 1 mg/mL 농도의 열수 및 에탄올 추출물에서 각각 60.81%와 71.29%로 에탄올 추출물의 소거능이 높게 나타났다. 모링가 열수 및 에탄올 추출물의 superoxide dismutase 유사 활성은 농도 의존적으로 증가하였으며, 5 mg/mL 농도의 열수 및 에탄올 추출물에서 각각 2.82%와 7.40%로 에탄올 추출물의 활성이 높은 것으로 나타났다. 모링가 추출물의 혈당 강하 효과를 확인하기 위해 실시한 ${\alpha}-glucosidase$ 활성 억제 효과는 5 mg/mL 농도의 열수 및 에탄올 추출물에서 45.19%와 88.14%로 에탄올 추출물의 저해 활성이 유의적으로 높게 나타났다. 숙취 해소능을 알아보기 위해 alcohol dehydrogenase 및 acetaldehyde dehydrogenase 활성을 측정한 결과 두 효소 모두 모링가 열수 및 에탄올 추출물의 농도에 의존적으로 증가하였다. Lipopolysaccharide(LPS)에 의하여 유도된 NO 합성은 열수 및 에탄올 추출물 1 mg/mL 농도에서 28.50%와 7.90%로 LPS 처리군(41.96%)보다 각각 32.1%와 81.2% 현저히 감소하였으며, 모링가 열수 및 에탄올 추출물이 tacrine으로 유도된 Hep3B 간암 세포주에 대하여 유의적인 보호 활성을 나타냈다. 이상의 결과에서와 같이 모링가 잎 열수 및 에탄올 추출물은 우수한 항당뇨, 항염증, 숙취 해소 효과 및 간세포 보호 효과가 있는 것으로 나타났기에 기능성 소재로서의 활용도가 높을 것으로 판단된다.

Keywords

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