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논문 기본 정보

자료유형
학술저널
저자정보
Guan-Zheng Qu (강원대학교) Chuan-Ling Si (Tianjin University of Science & Technology) Yu Yin (강원대학교) Myeong-Hyeon Wang (강원대학교)
저널정보
한국영양학회 Nutritional Sciences Nutritional Sciences Vol.9 No.4
발행연도
2006.11
수록면
330 - 334 (5page)

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초록· 키워드

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??Chemical composition of the Eucommia ulmoides bark, including extractives, proximate, mineral, fatty acid and monosaccharide compositions, was studied The most abundant mineral was calcium (533.17 ㎎/100 g). α-linolenic acid (24.7%) and linoleic acid (24.3%), showed higher contents among the fatty acids. Major monosaccharides of E. ulmoides bark were arabinose (13.94 ㎎/g), xylose (18.91 ㎎/g) and glucose (119.7 ㎎/g). From the bark of E. ulmoides, four compounds were isolated and their structures were elucidated as caffeic acid (Ⅰ), kaempferol (Ⅱ), quercetin (Ⅲ) and isoquercitrin (Ⅳ) by spectroscopic analysis such as NMR and MS, including cellulose TLC and other chemical evidence such as hydrolyzation and acetylation. The antioxidant activities of four isolated compounds were evaluated by DPPH free radical scavenging, hydroxyl scavenging and reducing power assays. The results indicated that all the isolated compounds showed higher DPPH radical scavenging activity than α-tocopherol and BHT that were used as positive controls and these four compounds exhibited considerable reducing power and hydroxyl radical (OH') scavenging activity. Considering from the results above, it suggests that the E. ulmoides bark is a potential natural source of antioxidant material.

목차

INTRODUCTION
MATERIALS AND METHODS
RESULTS AND DISCUSSION
Literature Cited

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