Journal of Food: Microbiology, Safety & Hygiene
Open Access

Seda Guc

Publications

• Research Article
  Citric Acid Production from Nontreated Beet Molasses by a Novel Aspergillus niger Strain: Effects of pH, Sugar and Ingredients
  Author(s): Seda Guc and Osman ErkmenSeda Guc and Osman Erkmen
  
  Effects of factors on the citric acid production from non-treated beet molasses were studied in Aspergillus niger OE55. Maximum amount of citric acid (19.13 and 34.62 g/L) was achieved when the initial pH of fermentation medium was 6.0 from 200 g/L and 150 sugar respectively. Citric acid production and biomass formation continuously increased during fermentation period in the media initially containing 200 g/L sugar. Remaining sugar (from 3.20 to 6.03 g/L) was higher at the end of fermentation in the media initially containing 160 g/L sugar than 200 g/L sugar. Yield of citric acid after 4 days of fermentation were ranged from 0.16 to 0.28 g/g from 160 g/L sugar. The high phosphorus and nitrogen levels stimulated biomass formation and reduced citric acid production. The optimum incubation for maximal citric acid production varies both with the sugar concentration in non-treate.. View More»
  DOI: 10.4172/2476-2059.1000122

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