Title: Process Research on Fermentation of Citric Acid by using Corn Clarifying Solution
Abstract:[Objective] The study aimed to explore the process on the fermentation of citric acid by using the corn clarifying solution.[Method] With the corn clarifying solution as raw material and Aspergillus n...[Objective] The study aimed to explore the process on the fermentation of citric acid by using the corn clarifying solution.[Method] With the corn clarifying solution as raw material and Aspergillus niger as the strain,the fermentation test of citric acid was conducted in the 50 L fermenter.The effects of the inoculation rate,initial pH value and addition amount of corn thick liquor on producing acid in the fermentation of citric acid by using the corn clarifying solution,so as to discuss the optimized process conditions for producing the citric acid,and the producing acid curve in the fermentation of citric acid by using the corn clarifying solution and the mycelium pellet shape of A.niger in citric acid under the optimized process conditions.[Result] The optimized process conditions for producing the citric acid by using the corn clarifying solution was that the inoculation rate was 12%,initial pH in fermentation was 5.6 and the addition amount of corn thick liquor was 1.1%,under which,when the fermentation was for 72 h,the final acidity could reach 15.5%,the residual total sugar content was no more than 1.1%(W/V),and the version rate of glucose to citric acid was 97.1%.[Conclusion] This research provided the reference basis for making full use of corn resources and improving the fermenting level of citric acid.Read More
Publication Year: 2010
Publication Date: 2010-01-01
Language: en
Type: article
Access and Citation
Cited By Count: 1
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