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논문 기본 정보

자료유형
학술저널
저자정보
Kim, Kyeong Mu (Department of Food Science and Technology, Sejong University) Shim, Soon-Mi (Department of Food Science and Technology, Sejong University)
저널정보
한국응용생명화학회 Applied Biological Chemistry Applied Biological Chemistry 제57권 제4호
발행연도
2014.1
수록면
503 - 509 (7page)

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The hypothesis of the present study is that methanol extract of Houttuynia cordata Thunb (MEH) and its targeted bioactive components including rutin, quercitrin, and chlorogenic acid can be effective in reducing reactive oxygen species (ROS) caused by nicotine and promoting nicotine to cotinine in HepG2 cell. Oxygen radical absorbance capacity (ORAC) of bioactive components and MEH was measured to assess free radical scavenging capacity. ROS inhibition ability of bioactive components and MEH was measured by 2',7'-dichlorodihydrofluorescein diacetate assay. The conversion rate of nicotine to cotinine by bioactive components and MEH was determined by the direct barbiturate assay method. ORAC value confirmed that MEH and its bioactive components provided an antioxidant capacity ranging from 126 to $138{\mu}M$ trolox equivalents/100 g. Compared to nicotine only, pretreatment of MEH, rutin, and quercitrin was revealed to effectively inhibit ROS production in HepG2 cell by up to 9, 7.4, and 14%, respectively. Nicotine conversion to cotinine after 120 min incubation was 1.7 and 1.4 times higher in rutin and chlorogenic acid pretreatment than the control, respectively. H. cordata and its targeted bioactive components could be a valuable natural ingredient for inhibiting ROS formation by nicotine as well as enhancing the rate of nicotine to cotinine turnover.

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