黑葡萄穗霉菌生防细菌LY424产天然红色素特性的研究

[目的]研究黑葡萄穗霉菌(Starchybotrys chartarum)生防细菌LY424产天然红色素的特性。[方法]培养菌株、提取色素,测定吸收峰和色素色价,探讨不同条件对红色素稳定性的影响。[结果]红色素的最大紫外吸收值在波长524 nm处;色素色价为66.93;易溶于极性溶剂;酸碱度和温度对色素影响较小;易被强氧化剂氧化;金属离子对色素的影响不明显;保存该色素的条件为密封避光。[结论]该红色素产量和稳定性较高,可以作为一种天然色素资源进行开发。

Study on Characteristics of a LY424 Bacterial Strain to Produce Natural Red Pigment

[Objective] The basic characteristics of a LY424 bacterial strain which can prevent and control the growth of Starchybotrys chartarum to produce the natural red pigment were studied.[Method] To culture strain and extract pigment,determine absorption peak and color value and the influence of different conditions on the stability of red pigment.[Result] The maximum UV absorption value of the natural red pigment was at 524 nm,the color value was 66.93,the red pigment also dissolved in polar solvents very easily,its color could not be affected by pH,temperature and metal ions,easily oxidized by the strong oxidizer,at this time it was concluded that the pigment need to be kept under conditions of no light and air.[Conclusion] The red pigment has higher production and better stability,so can be used as a natural pigment resource for development.