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갈조류 지충으로부터 분리한 3개의 Norisoprenoids 화합물
박기의,김유아,정현아,이희정,안종웅,이범종,서영완,Park, Ki-Eui,Kim, You-Ah,Jung, Hyun-Ah,Lee, Hee-Jung,Ahn, Jong-Woong,Lee, Burm-Jong,Seo, Young-Wan 대한화학회 2004 대한화학회지 Vol.48 No.4
우리나라 연안에 널리 분포하고 있는 지충이로부터 3개의 norisoprenoid 화합물들인 (+)-epiloliolide (1), (-)-loliolide (2), apo-9''-fucoxanthinone (3)을 칼럼크로마토그래피와 역상 HPLC를 사용하여 분리$\cdot$정제하였다. 이들 분리한 화합물 1, 2 및 3은 갈조류인 지충이로부터 처음 분리되어 보고하는 것이다. 특히 화합물 1은 비록 육상식물에서 분리된 바 있으나, 해양생물로부터는 처음 분리되어 보고하는 것이다. 분리된 화합물의 구조는 $1^H$ COSY, NOESY, HMQC 그리고 HMBC와 같은 이차원적인 NMR 분광학적인 실험을 이용하여 문헌치와 비교하여 확인하였다. From Sargassum thunbergii which is widely distributed in coastal area of Korea, three norisoprenoids, (+)-epiloliolide (1), (-)-loliolide (2), and apo-9'-fucoxanthinone (3) were isolated by using column chromatography and reverse-phase HPLC. Compound 1, 2 and 3 were for the first time isolated from the Brown Alga Sargassum thunbergii. Particularly, Compound 1 was for the first time isolated the marine organism although it was reported from the terrestrial plant. Their structures have been determined by extensive 2-D NMR experiments such as $^1H COSY, NOESY, HMQC$, and HMBC and by comparison with the reported data in the literature.
불가사리(Asterias amurensis) 추출물을 첨가한 사료의 급이가 조피볼락 (Sebastes schlegeli)의 성장, 혈액성상 및 식세포 활성산소 생산에 미치는 효과
박희연 ( Hee Yeon Park ),임치원 ( Chi Won Lim ),김연계 ( Yeon Kye Kim ),최태진 ( Tae Jin Choi ),윤호동 ( Ho Dong Yoon ),이가정 ( Ka Jung Lee ),서연경 ( Yeon Kyung Seo ),김지영 ( Ji Yeong Kim ),박기의 ( Ki Eui Park ) 한국응용생명화학회 2007 Applied Biological Chemistry (Appl Biol Chem) Vol.50 No.4
서영완,이희정,차효준,김유아,박기의 韓國海洋大學校 附設 海洋科學技術硏究所 2002 硏究論文集 Vol.11 No.2
The antioxidant activity of methanol and dichloromethane extracts of salt marsh plants was tested by using 1,1-Diphenyl-2-picryl-hydrazyl(DPPH). Three salt marsh plants (Erigeron annuus, Ixeris tamagawaensis kitamura, Portulaca oleracea) were found to be significantly effective in DPPH radical scavenging activity. The combined crude extracts of Portulaca oleracea were sequentially partitioned with n-hexane, 15% aq. MeOH, EtOAc, n-BuOH and H_2O. the antioxidative activities of several fractions were determined by evaluation the DPPH radical scavenging effect and by measuring lipid peroxide using 2-thiobarbituric acid (TBA). Among them, remarkable antioxidative effects were observed in the fractions of EtOAc and n-BuOH. The DPPH radical scavenging effect (IC_50=17.90㎍/ml) of the n-BuOH soluble fraction was comparable with that of natural antioxidant, a-tocopherol (IC_50=6.99㎍/ml).