Applied Biological Chemistry

The Korean Society for Applied Biological Chemistry (한국응용생명화학회)
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Isolation and Characterization of Major Glycosphingolipid from Rice Bran Extract

쌀겨 추출물로부터 스핑고당지질의 분리와 구조결정

  • Mitsutake, Susumu (Department of Biomembrane and Biofunctional Chemistry, Graduate School of Pharmaceutical Science, Hokkaido University) ;
  • Okada, Tadashi (Oriza Oil & Fat Chemical Co.) ;
  • Kang, Byoung-Won (Department of Chemistry, Dong-eui University)
  • Published : 2007.03.31
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Abstract

In order to examine the biofunctions of glycosylceramide which is representative of sphingolipid, monoglycosylceramide (cerebroside) was isolated from rice bran extract. Crude glycosylceramides were isolated in large quantities and promptly by flash system column chromatography from rice bran extract, and purified by normal-phase HPLC using an evaporative light-scattering detector. One major cerebroside was obtained by HPLC used as an eluent consisting of chloroform, methanol and water (99:11:1, v/v/v), and the constituents were analyzed by MALDI/TOF-MS, FAB-MS, GC and 600 MHz $^1$H-NMR. The component sugar was estimated to be glucose. In the ceramide, the fatty acid component consist was 2-hydroxy arachidic acid. The long-chain base component was sphinga-4,8-dienine.

대표적인 스핑고지질인 글리코실세라미드의 생리적 기능을 조사하기 위하여 쌀겨 추출물로부터 cerebroside를 분리하였다. 정제하지 않은 글리코실세라미드를 flash system 칼럼으로 분리한 후 ELSD를 검출기로 사용하여 순상 HPLC로 정제하였다. 클로로포름 : 메탄올 : 증류수(99:11:1, v/v/v)을 용출용매로 사용하여 주요 cerebroside를 얻을 수 있었고, MALDI/TOF-MS, FAB-MS, GC, 600MHz $^1$H-NMR로 구조를 분석하였다. 구성당은 글루코오스였고 cerebroside의 구성 지방산은 2-hydroxy-arachidic산이었다. 장쇄 염기는 sphinga-4,8-dienine이었다.

Keywords

References

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