1997 Fiscal Year Final Research Report Summary
Studies on the Biosynthetic Method and Improvement of Production of Novel Polysaccharides from Living Wastes
| Project/Area Number |
07558245
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| Research Category |
Grant-in-Aid for Scientific Research (A)
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| Allocation Type | Single-year Grants |
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| Section | 展開研究 |
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| Research Field |
Biomedical engineering/Biological material science
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| Research Institution | HOKKAIDO UNIVERSITY |
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Principal Investigator |
TOKURA Seiichi Hokkaido Univ., Graduate School of Envir.Earth Sci., Pro., 大学院地球環境科学研究科, 教授 (40000806)
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| Co-Investigator(Kenkyū-buntansha) |
NAKAMURA Tadao Nihon Soda Co., Ltd., Chief, 機能製品本部, 研究部長
SAKAIRI Nobuo Hokkaido Univ., Graduate School of Envir.Earth Sci., A.Pro., 大学院地球環境科学研究科, 助教授 (60153863)
NISHI Norio Hokkaido Univ., Graduate School of Envir.Earth Sci., Pro., 大学院地球環境科学研究科, 教授 (70001857)
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| Project Period (FY) |
1995 – 1997
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| Keywords | Bacterial cellulose / Acetobacter xylinum / N-acetylglucosamin / Cultivation / A novel polysaccharides / Direct filamentation / Aerobic rotatory cultivator / Shallow pan cultivator |
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| Research Abstract |
Actobacter xylinum has been subcultured repeatedly to prepare N-acetylglucosamin (GlcNAc) residue induced bacterial cellulose (2-4 mole%) applying GlcNAc containing glucose medium. As a similar level of GlcNAc residue incorporation has been made by applying glucosamin or galactosamin as carbonsource instead of GlcNAc, but mannosamin was not effective, participation of deaminase was suggested on the GlcNAc residue incorporation. Since ammonium ion was assumed to be final product by deaminase, gulucose and ammonium salts were applied successfully to incorporation of GlcNAc into bacterial cellulose by applying a new type of aerobic rotatory cultivator. A shallow pan cultivator has been made to prepare fibrous novel bacterial celluloses successfully. These fibers were shown to have higher tensile strength than that of cotton.
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Research Products
(12 results)
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[Publications] Tokura, S.and Nishimura, S.-I.: "Chitin Heparinoids : Their Preparation and Specificities" Functional Monomers and Polymers, Ed.by Takemoto, K., Ottenbrite, R.M., Kamachi, M., Marcel Dekker, Inc.433-454 (1997)
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[Publications] Mori, T., Okumura, M., Matsuura, M., Ueno, K., Tokura, S., Okamoto, Y., Minami, S.and Fujinaga, T.: "Effects of chitin and its derivatives on the proliferation and cytokine production of fibroblasts in vitro" Biomaterials. 18. 947-951 (1997)
Description
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