Optimization of Medium Components Producing Hongqu Pigments in Liquid-state Fermentation Using Kudzu Root Starch as Culture Media

被引：0

作者：

He D. ^{[1
]}

Zhou K. ^{[1
]}

Zhu X. ^{[1
]}

Xia Y. ^{[1
]}

Liu Z. ^{[1
]}

Zhang W. ^{[1
]}

Ni L. ^{[1
]}

机构：

[1] Institute of Food Science and Technology, Fuzhou University, Fujian Center of Excellence for Food Biotechnology, Fuzhou

来源：

Journal of Chinese Institute of Food Science and Technology | 2019年 / 19卷 / 02期

关键词：

Hongqu pigment; Kudzu root starch; Liquid state fermentation; Response surface experiment;

D O I：

10.16429/j.1009-7848.2019.02.014

中图分类号：

学科分类号：

摘要：

Kudzu root starch contains minerals and flavonoids, which makes it with healthy benefits. Hongqu pigment, as the secondary metabolites of Monascus strains, is a nature food pigment and has been identified to possess numerous physiological activities. Using kudzu root starch as culture media for the fermentation of Hongqu pigment could contribute their health benefits to the final product. In this study, kudzu root starch was used as a major culture, mixing with different carbon source, nitrogen source and metal ions for the production of Hongqu pigment by FZU-MP1501 (M. purpureus) in a liquid state fermentation system. The results indicated that there is no significant difference between kudzu root starch and polished rice as the starchy substrate for the Hongqu pigment production. The result of single factor experiment showed that maltose, monosodium glutamate and ferrous sulfate as the carbon source, nitrogen source and metal ions, respectively, would significantly increase the Hongqu pigment production. Response surface experiment result showed that the optimal medium component was as follow: malt sugar 32.50 g/L, monosodium glutamate 22.33 g/L and ferrous sulfate 0.70 g/L. On this basis, the optimized alcohol soluble color value was 3591.43 U/g, which increased by 66.42% comparing with the control; the yellow value, orange value and red value increased by 104.90%, 44.31% and 104.90%, respectively. In conclusion, the kudzu root starch can be used as a substrate of liquid-state fermentation of Hongqu pigment, and the yield of pigment increased dramatically after optimization of medium components. © 2019, Editorial Office of Journal of CIFST. All right reserved.

引用

页码：108 / 115

页数：7

共 5 条

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