摘要
丙酮酸是一种重要的有机酸.为提高发酵法生产丙酮酸的转化率,研究了初始葡萄糖质量浓度、供氧、补糖方式和流加培养中氮的供给对光滑球拟酵母发酵生产丙酮酸的影响,发现葡萄糖质量浓度在116.2g/L左右较为适宜;实行分阶段供氧控制模式可实现高产量、高产率和高葡萄糖消耗速度;采用连续补糖方式可获得较高的丙酮酸产量;用氨水代替KOH控制pH值进行流加培养发酵过程中,细胞表现出很强的丙酮酸合成能力.
Pyruvic acid is an important organic acid.For the increased introduction of zymotechnics by pyruvic acid conversion,the study analyzes the initial glucose thickness,oxygen provision,candy feeding,nitrogen culturing,and ball ferment production.It is discovered that 116.2 g/L of glucose thickness is proper,differentiated oxygon provision may bring a high yield of glucose consumption,continuous candy feeding a higher pyruvic acid output,and ammonia water may replace KOH to control the pH in cultivation of ferment.
出处
《石家庄职业技术学院学报》
2010年第2期26-28,共3页
Journal of Shijiazhuang College of Applied Technology
基金
石家庄职业技术学院2008年院级课题(08YZ005)
关键词
丙酮酸
发酵
工业化
pyruvic acid
ferment
industrialization
