食品科学 ›› 2010, Vol. 31 ›› Issue (10): 75-80.doi: 10.7506/spkx1002-6630-201010015

• 工艺技术 • 上一篇    下一篇

罗非鱼多肽- 锌配合物的制备及其生物活性

许庆陵1,曾庆祝1 ,* ,闫 磊2,林金莺1,顾采琴1,战 宇1,樊亚鸣1,黄儒强3   

  1. 1.广州大学化学化工学院食品工程系 2.广州陆仕水产有限公司 3.华南师范大学生命科学学院生物工程系
  • 收稿日期:2009-09-15 修回日期:2010-03-24 出版日期:2010-05-15 发布日期:2010-12-29
  • 通讯作者: 曾庆祝 E-mail:zqz@gzhu.edu.cn,qingzhuzeng@yahoo.com.cn
  • 基金资助:

    广州市属高校科技计划项目(广州市教育局08C082);广州大学引进人才科研启动项目(2007)

Preparation and Biological Activities of Zn (Ⅱ)–Tilapia Peptide Complexes

XU Qing-ling1,ZENG Qing-zhu1,*,YAN Lei2,LIN Jin-ying1,GU Cai-qin1,ZHAN Yu1,FAN Ya-ming1,HUANG Ru-qiang3   

  1. 1. Department of Food Engineering, College of Chemistry and Chemical Engineering, Guangzhou University, Guangzhou 510006,
    China;2. Guangzhou Lushi Fisheries Co. Ltd., Guangzhou 510820, China;3. Department of Bioengineering, School of Life
    Science, South China Normal University, Guangzhou 510631, China
  • Received:2009-09-15 Revised:2010-03-24 Online:2010-05-15 Published:2010-12-29
  • Contact: ZENG Qing-zhu E-mail:zqz@gzhu.edu.cn,qingzhuzeng@yahoo.com.cn

摘要:

目的:探索罗非鱼多肽- 锌配合物的制备工艺条件,并通过动物实验测试其生物活性。方法:比较影响蛋白多肽与锌发生配合反应的因素,筛选适宜工艺条件,采用光谱法对配合物结构进行初步鉴定,并以小鼠为动物实验对象,选择超氧化物歧化酶活力、氧化型谷胱甘肽还原酶活力、巨噬细胞吞噬百分率、超氧阴离子自由基清除率为指标,确定配合物的体内外生物活性。结果:蛋白多肽- 锌配合物制备的适宜工艺条件为pH5.0、温度80℃、蛋白质的水解度15%、多肽与Zn 的质量比为4:1,制备配合物的得率约为54%、Zn 的配合率为55%,配合物中锌含量为6.5 × 104mg/kg;配合物的光谱特征峰证实多肽与Zn2+ 生成了一种新型配合物;配合物能显著增强小鼠腹腔巨噬细胞的吞噬能力、显著提高小鼠肝组织匀浆中SOD 和肾组织中氧化型谷胱甘肽还原酶的活力,并对体外超氧阴离子自由基有很好的清除效果。结论:多肽与Zn2+ 在一定条件下通过配合作用生成多肽- 锌配合物,该配合物具有提高小鼠巨噬细胞吞噬能力、提高超氧化物歧化酶和氧化型谷胱甘肽还原酶活力、清除氧自由基等生物活性。

关键词: 罗非鱼, 多肽- 锌配合物, 制备, 生物活性

Abstract:

The preparation procedure of Zn (Ⅱ)–tilapia peptide complexes was investigated by single factor design method. Along with this, the complexes were structurally characterized and their biological activities were tested by measuring their effects on kidney GSH-Px and hepatic SOD activities and the percentage of macrophages engaged in phagocytosis in mice and in vitro superoxide anion free radical scavenging activity. Results showed that the optimal reaction conditions for the preparation of Zn (Ⅱ)–tilapia peptide complexes were as follows: pH 5.0 and 80 ℃ for a reaction between Zn (Ⅱ) and tilapia peptides contained in the tilapia meat hydrolysate with 15% degree of hydrolysis. Under such conditions, the yield of Zn (Ⅱ)–tilapia peptide complexes with a Zn content of 6.5 × 104 mg/kg reached up to 54% and Zn exhibited a chelation rate of 55%. Spectral characteristics demonstrated the formation of new complexes from Zn (Ⅱ) and tilapia peptides. The complexes remarkably increased the percentage of macrophages engaged in phagocytosis and hepatic SOD and kidney GSH-Px in mice and exhibited an excellent superoxide anion free radical scavenging activity.

Key words: tilapia, Zn (Ⅱ)&ndash, tilapia peptide complexes, preparation, biological activity

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