Abstract：
:The present study deals with the production of citric acid from a ram horn peptone (RHP) by Aspergillus niger NRRL 330. A medium from RHP and a control medium (CM) were compared for citric acid production using A. niger in a batch culture. For this purpose, first, RHP was produced. Ram horns were hydrolyzed by treatment with acids (6 N H(2)SO(4), 6 N HCl) and neutralizing solutions. The amounts of protein, nitrogen, ash, some minerals, total sugars, total lipids and amino acids of the RHP were determined. RHP was compared with peptones with a bacto-tryptone from casein and other peptones. The results from RHP were similar to those of standard peptones. The optimal concentration of RHP for the production of citric acid was found to be 4% (w/w). A medium prepared from 4% RHP was termed ram horn peptone medium (RHPM). In comparison with CM, the content of citric acid in RHPM broth (84 g/l) over 6 days was 35% higher than that in CM broth (62 g/l). These results show that citric acid can be produced efficiently by A. niger from ram horn.
journal_name
J Ind Microbiol Biotechnoljournal_title
Journal of industrial microbiology & biotechnologyauthors
Kurbanoglu EB,Kurbanoglu NIdoi
10.1007/s10295-004-0147-4subject
Has Abstractpub_date
2004-07-01 00:00:00pages
289-94issue
6eissn
1367-5435issn
1476-5535journal_volume
31pub_type
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journal_title：Journal of industrial microbiology & biotechnology
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journal_title：Journal of industrial microbiology & biotechnology
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journal_title：Journal of industrial microbiology & biotechnology
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更新日期：2018-06-01 00:00:00
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journal_title：Journal of industrial microbiology & biotechnology
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