发酵型鱼蛋白的抗氧化性影响因素研究【毕业论文】

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1、本科毕业论文（20届）发酵型鱼蛋白的抗氧化性影响因素研究专业：食品科学与工程目录摘要································································································1ABSTRACT·····················································································21前言·······················································

2、·····································31.1食品抗氧化剂的应用状况·························································31.2国内外食品天然抗氧化剂的研究现状············································31.3食品抗氧化剂开发方向·····························································41.4本课题研究的意义·······························

3、····································52实验材料、主要试剂与仪器·······························································52.1实验材料·············································································62.2主要试剂··············································································62.3主要仪

4、器··············································································63实验方法·······················································································73.1DPPH法测定自由基清除率··························································73.2发酵型鱼蛋白的抗氧化稳定性研究·························

5、·····················74结果与讨论···················································································84.1加热温度和时间对样品DPPH自由基清除率的影响····························84.2酸碱性对样品DPPH自由基清除率的影响·······································84.3人工胃液和人工肠液对样品DPPH自由基清除率的影响·····················94.4食品中常见添加剂对

6、样品DPPH自由基清除率的影响·······················105结论····························································································11参考文献························································································11致谢··························································

7、····································13[摘要]本文以海水低值鱼蛋白发酵液为原料，以DPPH自由基清除率为指标，研究不同加热温度和时间、不同pH值和人工胃液和人工肠液对该鱼蛋白生物发酵液的抗氧化性能影响，同时考察了与常见食品添加剂（盐、糖）混合后的抗氧化性变化。实验结果表明热处理后的样品在90℃，加热30min后的清除率最大为97.1%。且清除率随着时间的增加而增加。与pH值缓冲液混合后，在偏酸性下，最大清除率出现在与pH5缓冲液混合后，为81.4%；在偏碱性下，清除