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김민영(Min Young Kim),장귀영(Gwi Yeong Jang),오남석(Nam Seok Oh),백소윤(So Yune Baek),김길호(Kil Ho Kim),김경미(Kyung Mi Kim),김홍식(Hongsik Kim),이준수(Junsoo Lee),정헌상(Heon Sang Jeong) 한국식품영양과학회 2017 한국식품영양과학회지 Vol.46 No.8
본 연구에서는 발아에 의한 팥의 기능성분 변화를 살펴보기 위하여 6일 동안 발아시키면서 유리형 및 결합형 폴리페놀, 플라보노이드, 페놀산 및 안토시아닌의 변화를 분석하였다. 유리형 폴리페놀 및 플라보노이드 함량은 발아기간이 증가함에 따라 각각 약 2.6배 및 5배 정도 증가하였으며, 결합형 폴리페놀 및 플라보노이드 함량은 발아 초기 감소하였다가 발아 3일 및 2일 이후 각각 증가하였다. 발아기간에 따른 구성 페놀산의 변화의 경우 ferulic acid, veratric acid, hesperidin, salicylic acid, naringenin 및 hesperidin과 총 페놀산은 유리형 및 결합형 페놀산 함량이 모두 증가하였지만, 안토시아닌 및 안토시아니딘은 침지 및 발아과정에서 손실되어 감소하였다. 본 연구 결과 팥을 발아시킬 경우 폴리페놀, 플라보노이드 및 페놀산 함량이 증가함에 따라 팥에 함유된 기능성분의 이용성을 증대시키기 위해서는 발아공정의 적용이 효과적이라고 판단된다. This study was performed to investigate the changes between free and bound forms of bioactive compounds in germinated adzuki bean. Adzuki bean was germinated at 25°C for 6 days, and then free and bound forms of bioactive compounds were extracted. Total free polyphenol and flavonoid contents in of raw adzuki bean increased from 0.91 mg/g and 0.60 mg/g in before germination to 2.37 mg/g and 3.03 mg/g in at 6 days after germination, respectively. Bound polyphenol, flavonoid, and phenolic acid contents also increased with increasing germination periods, whereas bound polyphenol and flavonoid contents slightly reduced in at 2 days after germination. The total phenolic acid contents, including ferulic acid, veratric acid, hesperidin, salicylic acid, naringenin, and hesperidin, increased during germination, and germination process can convert compounds to phenolic acid via anabolism and catabolism. Total anthocyanin and anthocyanidin contents of adzuki bean decreased during germination due to hydration by water during soaking or enzyme activation of anthocyanase during germination. These results suggest that the germination process increased utilization of functional compounds such as phenolic compound and isoflavones in black soybean.
정전기보호를 위한 이중극성 소스를 갖는 EDNMOS소자의 특성
서용진(Yong-Jin Seo),김길호(Kil-Ho Kim),박성우(Sung-Woo Park),이성일(Sung-Il Lee),한상준(Sang-Jun Han),한성민(Sung-Min Han),이영균(Young-Keun Lee),이우선(Woo-Sun Lee) 대한전기학회 2006 대한전기학회 학술대회 논문집 Vol.2006 No.10
High current behaviors of extended drain n-typc metal-oxide-semiconductor field effects transistor (EDNMOS) with double polarity source (DPS) for electrostatic discharge (ESD) protection are analyzed. Simulation based contour analyses reveal that combination of bipolar junction transistor operation and deep electron channeling induced by high electron injection gives rise to the second on-state. Therefore, the deep electron channel formation needs to be prevented in order to realize stable and robust ESD protection performance. Based on our analyses, general methodology to avoid the double snapback and to realize stable ESD protection is to be discussed.
이연리,서정현,홍채영,김길호,이준수,정헌상,Lee, Youn Ri,Seo, Jeong Hyun,Hong, Chae Young,Kim, Kil Ho,Lee, Junsoo,Jeong, Heon Sang 한국식품영양학회 2020 韓國食品營養學會誌 Vol.33 No.1
This study was conducted to investigate the antioxidant activities on hydropoic-cultured ginseng roots (HGR) and leaves (HGL). The samples were lyophilized, extracted with 80% ethanol, and then evaluated the antioxidant activities compare with conventional-cultured ginseng. Total polyphenol content of ginseng, HGR, and HGL were 128.85±0.41, 115.74±1.28, and 282.15±5.15 mg/g, respectively. The DPPH radical scavenging activity(IC<sub>50</sub>) was the highest value of 6.47±0.13 mg/mL in the HGL. The ABTS radical scavenging activity was the highest value of 29.37±0.37 mg AA eq/g in HGL, and ginseng and HGR were 10.23±0.49 and 8.18±0.37 mg AA eq/g, respectively. The reducing power of ginseng, HGR, and HGL were 0.56±0.01, 0.53±0.01, and 0.68±0.01, respectively. Chelating effect was the highest value of 92.65±3.42% in HGL. The results of this study suggest that antioxidant activities in hydropoic-cultured ginseng leaves could have significant health benefits.