Citric acid production by gamma irradiated aspergillus niger from treated beet molasses under different fermentation conditions
Creators
- 1. Department of Radiation Research, Naional Centre for Radiation Research and Technology, Cairo (Egypt)
- 2. Food Science and Technology Department, Faculty of Agriculture, Menufiya university, (Egypt)
Description
The necessary treatments of beet molasses by addition of any the chelating agents potassium ferrocyanide and ethylenediamine tetraacetic acid (EDTA), to improve its suitability as a substrate for citric acid production by gamma irradiated inocula (at dose 0.4 KGy) of aspergillus niger EMCC 111 was studied. Addition of potassium ferrocyanide stimulated citric acid production and maximum production (10.92 g%) was obtained with 0.1 g% of ferrocyanide. In contrast, EDTA at 0.1 g% increased citric acid production but further addition of EDTA repressed the production. Addition of low molecular weight alcohols (methanol or ethanol)improved the yield of citric acid. Methanol and ethanol when added at concentration of 2%(v/v) elevate citric acid yield % to 47.58% and 46.51% respectively. 6 tabs
Additional details
Publishing Information
- Journal Title
- Egyptian Journal of Radiation Sciences and Applications
- Journal Volume
- 8
- Journal Issue
- 2
- Journal Page Range
- p. 253.
- ISSN
- 1110-0303
- CODEN
- EJRAES
INIS
- Country of Publication
- Egypt
- Country of Input or Organization
- Egypt
- INIS RN
- 28000636
- Subject category
- S63: RADIATION, THERMAL, AND OTHER ENVIRONMENTAL POLLUTANT EFFECTS ON LIVING ORGANISMS AND BIOLOGICAL MATERIALS;
- Resource subtype / Literary indicator
- Numerical Data
- Descriptors DEI
- ASPERGILLUS; BEETS; CHELATING AGENTS; CITRIC ACID; EDTA; EXPERIMENTAL DATA; FERMENTATION; FERROCYANIDES; GAMMA RADIATION; MOLASSES; POTASSIUM
- Descriptors DEC
- ALKALI METALS; AMINO ACIDS; BIOCONVERSION; CARBOXYLIC ACIDS; COMPLEXES; DATA; ELECTROMAGNETIC RADIATION; ELEMENTS; EUMYCOTA; FOOD; FUNGI; HYDROXY ACIDS; INFORMATION; IONIZING RADIATIONS; IRON COMPLEXES; METALS; NUMERICAL DATA; ORGANIC ACIDS; ORGANIC COMPOUNDS; PLANTS; RADIATIONS; TRANSITION ELEMENT COMPLEXES; VEGETABLES