天然着色剂与抗氧化剂对60Co-γ射线辐照辣椒红油的协同护色作用研究Study on Synergistic Color Protection Effects of Natural Colorants and Antioxidants on 60Co-γ Ray Irradiated Chili Red Oil
周新雨,王子欢,杨小平,王志新,贾利蓉,段飞霞
摘要(Abstract)：
辐照导致的类胡萝卜素褪色现象是制约非热杀菌技术~(60)Co-γ射线辐照在辣椒红油及辣椒红油调味预制食品领域应用的瓶颈问题。文章研究了商用杀菌剂量6～10 kGy辐照后，辣椒红油的变色特点：红绿色度值a~*剂量依赖性下降38.40%～54.78%,亮度值L~*和黄蓝色度值b~*小幅升高。进行单因素实验，研究4种天然着色剂和5种天然抗氧化剂的护色作用，发现0.1 g/kg红曲红、0.7 g/kg虾青素、0.2 g/kg L-抗坏血酸棕榈酸酯、0.7 g/kg迷迭香提取物可部分抑制6～10 kGy辐照导致的辣椒红油褪色，而β-胡萝卜素、赤藓红、萝卜红、抗坏血酸钙和抗坏血酸钠无明显作用。通过响应面实验优化得到10 kGy辐照的最佳护色方案为迷迭香提取物0.170 g/kg、虾青素0.155 g/kg、红曲红0.095 g/kg。此条件下实测a~*值为52.54,a~*值下降率为10.25%,ΔE~*值为8.39;虾青素与红曲红、迷迭香提取物有协同交互作用。迷迭香提取物的自由基清除能力最强，表明迷迭香提取物的辐照护色机制可能与抗氧化性相关，而红曲红和虾青素与其着色性更相关。
关键词(KeyWords)： 辣椒红素;~(60)Co-γ射线辐照;非热杀菌;护色;抗氧化;迷迭香提取物;红曲红
基金项目(Foundation): 国家自然科学基金青年科学基金项目(32102109)
作者(Author): 周新雨,王子欢,杨小平,王志新,贾利蓉,段飞霞
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