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NTIS 바로가기한국식품과학회지 = Korean journal of food science and technology, v.52 no.2, 2020년, pp.191 - 199
최지수 (가천대학교 식품생물공학과) , 이설희 (가천대학교 식품생물공학과) , 박영서 (가천대학교 식품생물공학과)
The purpose of this study was to isolate novel lactic acid bacteria to ferment mulberry leaf extract (MLE) and to investigate its anti-diabetic effect. Lactobacillus plantarum SG-053 isolated from gatkimchi was selected to ferment MLE because it exhibited high α-glucosidase inhibitory activit...
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핵심어 | 질문 | 논문에서 추출한 답변 |
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뽕잎에는 어떤 생리활성물질이 함유되어 있는가? | )는 전통적으로 누에의 먹이로 사용되어왔으나 최근 당뇨, 고혈압 등의 성인병에 효능이 있다고 보고되어 기능성 식품 소재로 사용되고 있다(Lee 등, 2003). 뽕잎에는 다양한 식이섬유와 비타민, 미네랄이 풍부하고, chlorogenic acid,플라보노이드, γ-aminobutyric acid (GABA), 1-deoxynojirimycin (DNJ) 등의 생리활성물질이 함유되어 항암, 항고혈압, 항당뇨 효과를 갖는 것으로 알려져 있다(Choi 등, 2015). 이중에서 DNJ는 α-glucosidase 저해제로 작용하여 항당뇨 활성을 나타내는 것으로 보고되어 있다(Asano 등, 1994; Lee와 Choi, 2012). | |
뽕잎에 있는 DNJ의 항당뇨활성은 어떻게 작용하는가? | DNJ는 화학적으로 합성되거나, 뽕잎 등의 식물이나 누에로부터의 추출, Bacillus 속 또는 Streptomyces 속 미생물의 발효에 의해 생산된다(Gao 등, 2016). DNJ의 항당뇨활성은 α-glucosidase 저해 활성에 의한 것으로, 간에서 글리코겐 탈분지효소인 α-1,6-glucosidase와장내 α-1,4-glucosidase의 활성을 저해하는 것으로 알려져 있으나, 장내 sodium-의존성 glucose cotransporter 2, glucose transporter 2의 발현도 억제한다(Gao 등, 2016; Li 등, 2013). | |
DNJ는 어떻게 얻어지는가? | DNJ는 포도당의 2번 탄소에 산소원자 대신 아민기가 결합되어 있는 형태의 포도당 유도체로, 소장 α-glucosidase의 활성 부위에 결합해 효소 활성을 저해한다(Kojima 등, 2010). DNJ는 화학적으로 합성되거나, 뽕잎 등의 식물이나 누에로부터의 추출, Bacillus 속 또는 Streptomyces 속 미생물의 발효에 의해 생산된다(Gao 등, 2016). DNJ의 항당뇨활성은 α-glucosidase 저해 활성에 의한 것으로, 간에서 글리코겐 탈분지효소인 α-1,6-glucosidase와장내 α-1,4-glucosidase의 활성을 저해하는 것으로 알려져 있으나, 장내 sodium-의존성 glucose cotransporter 2, glucose transporter 2의 발현도 억제한다(Gao 등, 2016; Li 등, 2013). |
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