食品科学 ›› 2010, Vol. 31 ›› Issue (7 ): 173-176.doi: 10.7506/spkx1002-6300-201007038

• 基础研究 • 上一篇    下一篇

金属离子对花生分离蛋白凝胶形成特性的影响

钟世荣,冯治平,吴士业   

  1. 四川理工学院生物工程学院
  • 收稿日期:2009-12-16 出版日期:2010-04-01 发布日期:2010-12-29
  • 通讯作者: 钟世荣 E-mail:zhongsr@suse.edu.cn
  • 基金资助:

    四川省教育厅自然科学基金项目(08ZA162)

Effect of Metal Ions on Gel-forming Characteristics of Peanut Protein Isolate

ZHONG Shi-rong,FENG Zhi-ping,WU Shi-ye   

  1. School of Biotechnology Engineering, Sichuan University of Science and Engineering, Zigong 643000, China
  • Received:2009-12-16 Online:2010-04-01 Published:2010-12-29
  • Contact: ZHONG Shi-rong E-mail:zhongsr@suse.edu.cn

摘要:

以花生仁为原料,用碱提酸沉法提取花生分离蛋白,讨论温度在90℃、pH9、花生分离蛋白质量浓度为14g/100mL 时,不同浓度的NaCl、MgCl2、CaCl2 和CuSO4 对花生分离蛋白形成凝胶的影响。实验表明,CaCl2是较好的凝固剂,浓度为0.06mol/L 时,形成凝胶硬度高,形成时间短,但形成的凝胶胶粒较粗。

关键词: 花生分离蛋白, 凝胶, 金属离子

Abstract:

Peanut protein isolate was prepared by the method of alkaline extraction followed by acid precipitation. Effects of metal ions such as NaCl, MgCl2, CaCl2 and CuSO4 at various concentrations on gel-forming characteristics of peanut protein isolate were explored under the conditions of 90 ℃, pH 9 and 14 g/100mL peanut protein solution. Results indicated that CaCl2 at the concentration of 0.06 mol/L was a good coagulatant for peanut protein isolate. Higher hardness, shorter gelatin time and thicker colloidal particles of peanut protein isolate were observed under this condition.

Key words: peanut protein, gel, metal ion

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