Volume 4, Issue 3 (2002)                   JAST 2002, 4(3): 119-125 | Back to browse issues page

‎ 20.1001.1.16807073.2002.4.3.2.6

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Mazaheri Asadi M, Nikkhah M. Production of Citric Acid from Date Pulp By Solid State Fermentation. JAST 2002; 4 (3) :119-125
URL: http://jast.modares.ac.ir/article-23-1862-en.html
Production of Citric Acid from Date Pulp By Solid State Fermentation
M. Mazaheri Asadi * 1, M. Nikkhah1
1- Biotechnology Center, Iranian Research Organization for Science and Technology, No. 71 Forsat St., Enghelab Ave., Tehran, Islamic Republic of Iran.
Abstract:   (7912 Views)
A solid state fermentation method was developed for the production of citric acid from date pulp (obtained of date syrup production from the process) by Aspergillus niger PTCC 5010. Poor yield was obtained when potassium ferrocyanide treated date pulp were used as substrate, but methanol at a 3-4% concentration markedly increased the forma-tion of citric acid from the waste. The optimum range of pH and moisture for citric acid production were 3.5-4.5, and 70-80% respectively. This method produced about 168g cit-ric acid per kg of date pulp under optimum conditions. On the basis of reducing sugar consumed, the yield was 87% within eight days.
Keywords: A. niger, Citric acid, Solid state fermentation
Full-Text [PDF 98 kb]   (11859 Downloads)    
Subject: Food Science and Technology
Received: 2010/02/10 | Accepted: 2010/02/10 | Published: 2010/02/10
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