Optimization of L-lactic acid production by fermentation of Huaimi dregs. Issue 2 (4th March 2018)

• Record Type: Journal Article
• Authors: Zhang, Jingsheng; Guo, Zhiyuan; Liu, Bingchen; Wang, Yue; Yu, Na; Huo, Qing
• Is Part Of: Biotechnology, biotechnological equipment. Volume 32:Issue 2(2018)
• Page Start: 357
• Page End: 365
• Publication Date: 2018-03-04
• Subjects: Huaimi -- lactic acid -- Rhizopus oryzae; Biotechnology -- Periodicals; Biotechnology -- Periodicals; Biotechnology -- instrumentation -- Periodicals; Periodicals; 660.605
• DOI: 10.1080/13102818.2017.1324739
• Languages: English
• ISSNs: 1310-2818

Abstract

ABSTRACT: Utilization of waste dregs, e.g. Huaimi dregs, is an important issue. Huaimi is a traditional Chinese medicine and 20, 000 tons of dregs are annually produced. This study optimized the production of L-lactic acid through solid-state fermentation of Huaimi dregs using uniform and orthogonal experimental designs. Among three tested parameters, fermentation time and substrate ratio (wheat bran:Huaimi dregs) were found to have a significant effect on the production of lactic acid. Using fermentation time of 41.6 h, substrate ratio of 4.26:1, inoculum size of 6.1% and fermentation temperature of 28 °C, 1 kg Huaimi dregs could produce 286.6 mg lactic acid.