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논문 기본 정보

자료유형
학술저널
저자정보
Shin Young Park (Department of Clinical Laboratory Science Cheju Halla University Jeju Korea)
저널정보
대한임상검사과학회 대한임상검사과학회지 대한임상검사과학회지 제52권 제4호
발행연도
2020.1
수록면
398 - 407 (10page)

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초록· 키워드

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The inhibitory effect on α-glucosidase, a marker of postprandial hyperglycemia, and angiotensinconverting enzyme (ACE), a marker of hypertension, was analyzed using non-fermented green tea and three different types of fermented tea, which are popular beverages in modern life. Green tea was mixed with trace amounts of vanadate (50 μg/mL), which has insulin-mimetic effects, to investigate the synergistic effect of vanadate on the inhibition of α-glucosidase. The concentration of epigallocatechin gallate (EGCG) and caffeine was also checked. The extracts of green tea and fermented teas showed clear inhibition on α-glucosidase, which caused a decrease in the postprandial glucose levels. The inhibitory effect was most prominent in the 20% fermented tea. Trace amounts of vanadate (50 μg/mL)-mixed green tea extract had twice the inhibitory effect on α -glucosidase than the pure tea extract. All teas showed inhibitory effects on ACE. Among those, the effect was most prominent in green tea, which had higher concentrations of EGCG. In contrast, the postprandial glucose-lowering effect and ACE inhibition of the fermented teas, which have a lower level of EGCG, was attributed to some other different functional substances.

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