氮源对红曲霉突变株产黄色素的影响

Effects of Nitrogen Sources on Monascus Yellow Pigment Production by Monascus Mutant

摘要:

本文对诱变得到的红曲霉突变株MYM2产黄色素进行培养基氮源的优化，研究了几种常见的无机氮源和有机氮源对MYM2产黄色素的影响。结果表明，有机氮源玉米浆和无机氮源氯化铵有利于MYM2产黄色素，最佳质量分数均为1%左右，该条件下产黄色素色价分别达到84.12 U/mL和72.17 U/mL。使用这两种氮源混合来培养MYM2，最终黄色素产量达到96.51 U/mL，其胞外色调和胞内色调都达到3以上。

Abstract:

In this paper, the nitrogen sources of culture media for Monascus mutant MYM2 were optimized. Effects of some inorganic nitrogen sources and organic nitrogen sources on Monascus yellow pigment production were investigated. Results showed that the best inorganic nitrogen source, organic nitrogen source for the production of yellow pigment by MYM2 were 1% of corn steep liquor and ammonium chloride, with which the yields of Monascus yellow pigment productions reached 84.12 U/mL and 72.17 U/mL respectively. cultured in the medium containing the mixture of the corn steep liquor (1%) and ammonium chloride (1%), MYM2 could produce 96.51 U/mL of the Monascus yellow pigment .Both intracellular and extracellular colour hue were > 3.