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博士論文
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Studies on screening for microbes producing vinyl compounds and its application to development of biobased polymers
- 国立国会図書館永続的識別子
- info:ndljp/pid/13332033
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- type:ThesisThe aim of this study is development of screening method for microbes producing vinyl compounds from environmental samples and synthesis of...
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デジタル
- 資料種別
- 博士論文
- 著者・編者
- 佐野, 芽生
- 著者標目
- 出版年月日等
- 2020-09-24
- 出版年(W3CDTF)
- 2020-09-24
- 並列タイトル等
- ビニル化合物生産微生物の探索とバイオベースポリマー開発への利用に関する研究
- 授与機関名
- 京都工芸繊維大学
- 授与年月日
- 2020-09-24
- 授与年月日(W3CDTF)
- 2020-09-24
- 報告番号
- 甲第979号
- 学位
- 博士(工学)
- 本文の言語コード
- eng
- 件名標目
- 対象利用者
- 一般
- 一般注記
- type:ThesisThe aim of this study is development of screening method for microbes producing vinyl compounds from environmental samples and synthesis of new biobased polymers using the vinyl compounds as monomers. Thus, the following studies were carried out.In Chapter 1, structure, function, and biosynthesis of itaconic acid (IA) derivatives with the vinylidene group were summarized and their perspectives for industrial use were discussed. In Chapter 2, a selective labeling method based on Mizoroki-Heck reaction for vinyl compounds and a simple TLC?densitometric method for the quantification of the vinyl compounds were developed.In Chapter 3, the selective labeling reaction developed in Chapter 2 was confirmed by an iodine test and the screening of IA-producing fungi from soils was performed using the developed method. Using this method, 37 strains were selected as IA-producing fungi from 240 strains isolated from soils. In Chapter 4, a direct screening method based on Thiol-ene reaction for microbes producing vinyl compounds from soil samples was developed. Soil samples were spread on an agar medium supplemented with TG and VA-044. Screening of soil samples using the screening method led to isolation of IA-producing fungi from a soil. This method was named DISCOVER (direct screening method based on coupling reactions for vinyl compound producers).In Chapter 5, 37 soil microbes isolated in Chapter 3 were further characterized. One out of the 37 strains was identified as A. niger S17-5. Identification of the IA derivatives produced by S17-5 revealed that they were identical to 9-HHIA and 10-HHIA. The antibacterial, anti-inflammatory, and cytotoxic properties of two IA derivatives were evaluated.In Chapter 6, IA and 10-HHIA were copolymerized at different ratios through aqueous free radical polymerization with KPS as an initiator, resulting in poly(IA-co-10-HHIA)s with different monomer compositions. This is the first time that biobased polyvinyls were synthesized using naturally occurring IA derivatives.In chapter 7, general review was described.In conclusion, developed screening methods permit selective isolation of microbes producing vinyl compounds from environment. And the vinyl compounds produced by microbes enable the development of bio-based polymers.
- 国立国会図書館永続的識別子
- info:ndljp/pid/13332033
- コレクション(共通)
- コレクション(障害者向け資料:レベル1)
- コレクション(個別)
- 国立国会図書館デジタルコレクション > デジタル化資料 > 博士論文
- 収集根拠
- 博士論文(自動収集)
- 受理日(W3CDTF)
- 2024-02-02T16:16:38+09:00
- 記録形式(IMT)
- application/pdf
- オンライン閲覧公開範囲
- 国立国会図書館内限定公開
- デジタル化資料送信
- 図書館・個人送信対象外
- 遠隔複写可否(NDL)
- 可
- 掲載誌(URI)
- 連携機関・データベース
- 国立国会図書館 : 国立国会図書館デジタルコレクション