Studies on the properties of antioxidative emulsifier in aqueous and emulsion systems

水乳体系中抗氧化乳化剂的性能研究

• 批准号: 19780106
• 负责人: WATANABE Yoshiyuki
• 金额: $ 1.88万
• 依托单位: Kinki University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Young Scientists (B)
• 财政年份: 2007
• 资助国家: 日本
• 起止时间: 2007 至 2009
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-19780106/
• 关键词: 抗酸化性乳化剤; アシルアスコルビン酸; 固定化リパーゼ; カテキン; 分解速度定数; O; W型エマルション; 有機酸; 臨界ミセル濃度

Acyl ascorbates were synthesized by the condensation of ascorbic and fatty acids in acetone using an immobilized lipase from Candida antarctica. The dependency of the rate constant, k, for the degradation of catechin in aqueous solution with octanoyl ascorbate on the concentration of the ascorbate was obviously different from that with ascorbic acid. The stability of catechin was reduced by ascorbic acid or octanoyl ascorbate, although the k value for degradation decreased with increasing citric acid concentration. The oxidation process of methyl linoleate as an oil droplet in the O/W emulsion with ascorbic acid or acyl ascorbate was measured, and their antioxidative properties were examined.

使用来自南极假丝酵母的固定化脂肪酶，通过抗坏血酸和脂肪酸在丙酮中缩合来合成酰基抗坏血酸。儿茶素在水溶液中用辛酰抗坏血酸降解的速率常数k对抗坏血酸浓度的依赖性与用抗坏血酸的明显不同。抗坏血酸或抗坏血酸辛酰酯降低了儿茶素的稳定性，尽管降解的 k 值随着柠檬酸浓度的增加而降低。测量了亚油酸甲酯作为油滴在抗坏血酸或酰基抗坏血酸的O/W乳液中的氧化过程，并检查了它们的抗氧化性能。

项目成果

Stability of catechin in aqueous solution with coexistent ascorbic acid or octanoyl ascorbate and organic acid

儿茶素在抗坏血酸或抗坏血酸辛酰酯与有机酸共存的水溶液中的稳定性

• 发表时间: 2010
• 期刊: Food Science and Technology Research 16(2)(in press)
• 作者: Yoshiyuki Watanabe;Kana Idenoue;Mizuka Nagai;Shuji Adachi
• 通讯作者: Shuji Adachi

Biochemical Engineering ; Chapter 2 Enzymatic synthesis of acyl ascorbate and its function as a food additive

生物化学工程；

• 发表时间: 2009
• 作者: Yoshiyuki Watanabe;他1名
• 通讯作者: 他1名

Biochemical engineering.

• DOI: 10.1016/j.copbio.2004.08.014
• 发表时间: 2004
• 期刊: Current opinion in biotechnology
• 影响因子: 7.7
• 作者: M. Carrondo;J. Auniņš

Degradation Kinetics of Catechin in Aqueous Solution in the Presence of Ascorbic Acid or Octanoyl Ascorbate

• DOI: 10.11301/jsfe.10.117
• 发表时间: 2009-06
• 作者: Yoshiyuki Watanabe;Tatsunori Okayasu;Kana Idenoue;S. Adachi