Cu^(2+)、Fe^(2+)和Fe^(3+)对红曲霉液态发酵产色素影响  

Effect of Cu^(2+),Fe^(2+) and Fe^(3+) on the yield of Monascus pigments

作　　者：杨东成[1] 钱学红 黄莹琪 王伟平[1] 

机构地区：[1]湖北工业大学生物工程与食品学院,武汉430068

出　　处：《中国食品添加剂》2017年第4期100-102,共3页China Food Additives

基　　金：湖北工业大学2015年校级大学生创新创业训练计划培育项目;项目编号:201510500055

摘　　要：采用液体发酵研究了三种金属离子Cu^(2+)、Fe^(2+)和Fe^(3+)对红曲霉发酵代谢产色素的影响。添加不同浓度的CuSO_4溶液、FeSO_4·7H_2O溶液和FeCl_3溶液到培养基中发酵培养,测量发酵液中的红曲色素色价,进行对比分析,发现当CuSO_4溶液浓度逐渐增大时,红曲色素的色价逐渐降低;当Fe^(2+)逐渐增加时,色素含量上升;当添加Fe^(3+)后,色素含量不稳定。因此,Cu^(2+)和Fe^(3+)不适合作为优化培养基的金属离子,Fe^(2+)利于色素生成,合适的FeSO_4添加浓度为0.05 mmol/L。The effects of different metal irons including Cu^2＋,Fe^2＋ and Fe^3＋ on the yield of Monascus pigments were detected in liquid fermentation.Compared to the control,different concentration of CuSO4,FeSO4· 7H2O and FeCl3 solution were added to the fermentation medium to invest the effect of metal saltson Monascus pigments.It was found that the color value of the Monascus pigment was decreased with the increased concentration of CuSO4 solution.When the concentration of Fe^2＋ was increased,the pigment value was increased too.Adding Fe^3＋ solution,the pigment content was unstable.Therefore,Cu^2＋ or Fe^3＋ is not suitable for the yield of pigment;while Fe^2＋ can promote the increasing of Monascus pigment,and the best concentration for FeSO4 solution was 0.05mmol/L.

关 键 词：红曲霉 金属离子 红色素 

分 类 号：TS202.3[轻工技术与工程—食品科学]