Gelation Mechanism and Hydrogen Bonding Behavior of Gellan Gum Studied by Vibrational Spectroscopy and Small Angle X-ray Scattering

振动光谱和小角X射线散射研究结冷胶的凝胶化机理和氢键行为

• 批准号: 23550252
• 负责人: HARUMI Sato
• 金额: $ 3.74万
• 依托单位: Kobe University (2012-2013)Kwansei Gakuin University (2011)
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2011
• 资助国家: 日本
• 起止时间: 2011 至 2013
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-23550252/
• 关键词: ゲル化; 水素結合; ジェランガム; 赤外分光法; ラマン分光; X線散乱; ラマン分光法; Ｘ線散乱

Gellan gum is an extracellular polysaccharide produced by Pseudomonas elodea, and is composed of tetrasaccharide (glucose, glucuronic acid, glucose, rhamnose) repeating units, containing one carboxyl side group. It is widely used in the food industry and biomedical fields since it forms transparent gels which have a heat and acid resistant nature. Gellan gum has the characteristic property of temperature-dependent and cation-induced gelation. This gelation involves the formation of double helical junction zones followed by the double helical segments of gellan gum to form a three-dimensional network by complexation with cations and hydrogen bonding with water. In the present study, we have investigated gelation mechanism of gellan gum by using infrared and Raman spectroscopy. It is likely that the hydrogen bonding between water and gellan gum becomes weak during the coil to double-helix transition.

结冷胶是由伊乐假单胞菌产生的胞外多糖，并且由四糖（葡萄糖、葡萄糖醛酸、葡萄糖、鼠李糖）重复单元组成，含有一个羧基侧基。它广泛用于食品工业和生物医学领域，因为它形成具有耐热和耐酸性质的透明凝胶。结冷胶具有温度依赖性和阳离子诱导的凝胶化特性。这种凝胶化涉及形成双螺旋连接区，然后是结冷胶的双螺旋片段，以通过与阳离子络合和与水氢键合形成三维网络。本文利用红外光谱和拉曼光谱研究了结冷胶的凝胶化机理。很可能水和结冷胶之间的氢键在卷曲到双螺旋转变期间变弱。

项目成果

減衰全反射遠紫外分光法を用いたポリエチレンを主鎖にもつ接着樹脂の表面構造の研究

衰减全内反射远紫外光谱研究以聚乙烯为主链的粘合树脂表面结构

• 发表时间: 2013
• 作者: M.Fukasawa;S.Watanabe; Y.Tajima;Y.Fukuchi;K.Takaishi;T.Sassa; M.Matsumoto;T.Yamashita;M.Uchiyama;T.Aoyama;小山 允，内藤智之，藤代博之;政本卓也,前島隆之,野田佳佑,加藤晃司,夏目龍,松尾拓朗,廣江伸哉,秋山章雅,行衛孝明,阿部友紀,笠田洋文,安東孝止;森澤勇介・中山篤史・小野和也・谷村恵里香・佐藤春実・苅山直美・東昇・尾崎幸洋
• 通讯作者: 森澤勇介・中山篤史・小野和也・谷村恵里香・佐藤春実・苅山直美・東昇・尾崎幸洋

ポリヒドロキシブタン酸における弱い水素結合が結晶構造安定化と熱的挙動に果たす役割

聚羟基丁酸中弱氢键对晶体结构稳定和热行为的作用

• 发表时间: 2013
• 作者: K. Sato;T. Abe;R. Fujinuma;K. Yasuda;T. Yamaguchi;H. Kasada;and K. Ando;藤代博之,内藤智之,小山允,横山和哉,岡徹雄;佐藤春実,門屋直人,尾崎幸洋
• 通讯作者: 佐藤春実,門屋直人,尾崎幸洋

Crystal Structures and Thermal Behavior of Polyhydroxyalkanoates Studied by Infrared Spectroscopy and Wide Angle X-ray Diffraction

红外光谱和广角 X 射线衍射研究聚羟基脂肪酸酯的晶体结构和热行为

• 发表时间: 2013
• 作者: H. Sato;Y. Ozaki
• 通讯作者: Y. Ozaki

Gelation mechanism of gellan gum studied by infrared and Raman spectroscopy

红外和拉曼光谱研究结冷胶的胶凝机理

• 发表时间: 2013
• 作者: H. Sato;T. Sakiyama;K. Kubota;Y. Ozaki
• 通讯作者: Y. Ozaki

A Raman Study on Intermolecular Interaction at the Interface of Polystyrene/ Carbon Nanotubes Nanocomposites

聚苯乙烯/碳纳米管纳米复合材料界面分子间相互作用的拉曼研究

• 发表时间: 2011
• 作者: Takeshi Miyake;Harumi Sato;Yukihiro Ozaki
• 通讯作者: Yukihiro Ozaki