Document Detail


A mutation of Aspergillus niger for hyper-production of citric acid from corn meal hydrolysate in a bioreactor.
MedLine Citation:
PMID:  25367793     Owner:  NLM     Status:  In-Data-Review    
Abstract/OtherAbstract:
The properties of the screened mutants for hyper-production of citric acid induced by carbon ((12)C(6+)) ion beams and X-ray irradiation were investigated in our current study. Among these mutants, mutant H4002 screened from (12)C(6+) ion irradiation had a higher yield of citric acid production than the parental strain in a 250-ml shaking flash. These expanded submerged experiments in a bioreactor were also carried out for mutant H4002. The results showed that (177.7-196.0) g/L citric acid was accumulated by H4002 through exploiting corn meal hydrolysate (containing initial 200.0-235.7 g/L sugar) with the productivity of (2.96-3.27) g/(L∙h). This was especially true when the initial sugar concentration was 210 g/L, and the best economical citric acid production reached (187.5±0.7) g/L with a productivity of 3.13 g/(L∙h). It was observed that mutant H4002 can utilize low-cost corn meal as a feedstock to efficiently produce citric acid. These results imply that the H4002 strain has the industrial production potentiality for citric acid and offers strong competition for the citric acid industry.
Authors:
Wei Hu; Jing Liu; Ji-Hong Chen; Shu-Yang Wang; Dong Lu; Qing-Hua Wu; Wen-Jian Li
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Journal of Zhejiang University. Science. B     Volume:  15     ISSN:  1862-1783     ISO Abbreviation:  J Zhejiang Univ Sci B     Publication Date:  2014 Nov 
Date Detail:
Created Date:  2014-11-04     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  101236535     Medline TA:  J Zhejiang Univ Sci B     Country:  China    
Other Details:
Languages:  eng     Pagination:  1006-10     Citation Subset:  IM    
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