Control of nanostructure of biomaterials and utilization of biomass with supercritical fluid process

超临界流体工艺控制生物材料纳米结构和生物质利用

• 批准号: 15580302
• 负责人: FUJII Tomoyuki
• 金额: $ 2.11万
• 依托单位: Niigata University of Pharmacy and Applied Life Sciences
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2003
• 资助国家: 日本
• 起止时间: 2003 至 2004
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-15580302/
• 关键词: supercritical fluid; subcriticak water; biomass; hot-compressed water treatment; activation volume; オリゴ糖

Soluble starch was treated with hot-compressed-water at the temperature range of 160-210 C using a continuous-flow reactor. Apart of the sample was converted to reducing oligosaccharides by hydrolysis with the hot-compressed- water. At 160-190 C the hydrolysis reaction occurred with the hot-compressed-water depending on a retention time. Over 200 C the behavior of generation of reducing oligosaccharides was found to be observed a maximum with increase of the retention time. From the results both hydrolysis reaction and resolution of a saccharide body occurred in the reaction mixture. The activation volumes of hydrolysis reaction at the range of 160-170 C were about 350 mL/mol. On the other hand, those at the range of 180-210 C were the values of 30-85 mL/mol. It was thought that the mechanism of hydrolysis reaction was different depending on the reaction temperature.

采用连续流反应器，在160 ~ 210℃的温度范围内用热压缩水处理可溶性淀粉。部分样品经热压缩水水解转化为还原性低聚糖。在160-190℃时，根据保留时间的不同，热压缩水发生水解反应。在200℃以上，随着保留时间的增加，还原性低聚糖的生成行为达到最大值。结果表明，反应混合物中既发生了水解反应，也发生了糖体的分解。在160 ~ 170℃范围内，水解反应的活化体积约为350 mL/mol。另一方面，180 ~ 210℃范围内的值为30 ~ 85 mL/mol。认为水解反应的机理随反应温度的不同而不同。

项目成果

T.Mitsumata, et al.: "pH-Response of Chitosan, κ-Carrageenan, Carboxymethyl Cellulose Sodium Salt Complex Hydrogels"Polymer. 44. 7103-7111 (2003)

T. Mitsumata 等人：“壳聚糖、κ-卡拉胶、羧甲基纤维素钠盐复合水凝胶的 pH 响应”聚合物 44. 7103-7111 (2003)

pH-Response of Chitosan, κ-Carrageenan, Carboxymethyl Cellulos Complex Hydrogels

壳聚糖、κ-卡拉胶、羧甲基纤维素复合水凝胶的 pH 响应

• 发表时间: 2003
• 期刊: Polymer 44
• 作者: T.Mitsumata;et al.
• 通讯作者: et al.

Treatment of Nonylphenol with Laccase in a Rotating Reactor

在旋转反应器中用漆酶处理壬基酚

• 发表时间: 2003
• 期刊: Journal of Bioscience and Bioengineering 96(6)
• 作者: T.Tanaka;et al.
• 通讯作者: et al.

Analysis of Ice Structure Formed in Frozen Agar Gel

冷冻琼脂凝胶中冰结构的分析

• 发表时间: 2004
• 期刊: Food Science and Technology Research 10(4)
• 作者: O.Miyawaki;et al.
• 通讯作者: et al.

pH-response of chitosan, κ-carrageenan, carboxymethyl cellulose sodium salt complex hydrogels

• DOI: 10.1016/j.polymer.2003.09.001
• 发表时间: 2003-11
• 期刊: Polymer
• 影响因子: 4.6
• 作者: T. Mitsumata;Yuuki Suemitsu;Keiko Fujii;T. Fujii;T. Taniguchi;K. Koyama