2003 Fiscal Year Final Research Report Summary
Development of sustainable and recycling system of Urushi as a plant resource
| Project/Area Number |
13574018
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 海外学術 |
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| Research Field |
環境保全
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| Research Institution | Kitami Institute of Technology |
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Principal Investigator |
YOSHIDA Takashi Kitami Institute of Technology, Faculty of Engineering, Professor, 工学部・化学システム工学科, 教授 (40166955)
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| Co-Investigator(Kenkyū-buntansha) |
HATTORI Kazuyuki Kitami Institute of Technology, Faculty of Engineering, Reseach Associate, 工学部・化学システム工学科, 助手 (20333669)
MIYAKOSHI Tetsuo Meiji Univeisity, Depaitment of Industual Chemistry, Professor, 理工学部・工業化学科, 教授 (00062018)
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| Project Period (FY) |
2001 – 2003
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| Keywords | Lacquer polysaccharide / Vietnam / China / NMR / GPC / Anti-HIV activity / Antitumor activity / Anticoagulant activity |
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| Research Abstract |
Structural analysis of Asian lacquer polysaccharides in Vietnam, Myanmar, Cambodia, Taiwan, and Japan was carried out by a combination of chemical and physical methods, and then their structures were compared with that of a Chinese lacquer polysaccharide reported previously. It was found that the structure of polysaccharides in China and Japan, Taiwan and Vietnam, Myanmar and Cambodia, was similar to each other. The polysaccharides in Myanmar and Cambodia had larger amounts of L-arabinose and L-rhamnose than those in other Asian lacquer polysaccharides. In addition, the degradation process of lacquer polysaccharide was revealed for the first time by the time-course of GPC measurements of polysaccharide in Aizu, Japan. The results suggest that the molecular weight of polysaccharide in lacquer tree had around Man=67 x 10^3 with narrow molecular weight distribution and then decreased gradually into two molecular weight fractions of Man=67 x 10^3 and Man=23 x 10^3 in the proportion of 25 and 75 mol% isolated after 3 weeks.10.
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