Please use this identifier to cite or link to this item: http://localhost:8080/xmlui/handle/123456789/1778
Title: Batch fermentation model of propionic acid production by propionibacterium acidipropionici in different carbon sources
Authors: Coral, J
Karp, S G
Vandenberghe, Luciana P S
Parada, J L
Pandey, A
Soccol, C R
Keywords: Propionibacterium acidipropionici
Propionic acid
Batch fermentation
Carbon sources
Sugarcane molasses
Glycerol
Lactate
Issue Date: 2008
Publisher: Springer
Citation: Applied Biochemistry and Biotechnology 151(2-3):333-341;Dec 2008
Abstract: Propionic acid (PA) is widely used as additive in animal feed and also in the manufacturing of cellulose-based plastics, herbicides, and perfumes. Salts of propionic acid are used as preservative in food. PA is mainly produced by chemical synthesis. Nowadays, PA production by fermentation of low-cost industrial wastes or renewable sources has been an interesting alternative. In the present investigation, PA production by Propionibacterium acidipropionici ATCC 4965 was studied using a basal medium with sugarcane molasses (BMSM), glycerol or lactate (BML) in small batch fermentation at 30 and 36 C. Bacterial growth was carried out under low dissolved oxygen concentration and without pH control. Results indicated that P. acidipropionici produced more biomass in BMSM than in other media at 30 degrees C (7.55 g l(-1)) as well as at 36 degrees C (3.71 g l(-1)). PA and biomass production were higher at 30 degrees C than at 36 degrees C in all cases studied. The best productivity was obtained by using BML (0.113 g l(-1) h(-1)), although the yielding of this metabolite was higher when using glycerol as carbon source (0.724 g g(-1)) because there was no detection of acetic acid. By the way, when using the other two carbon sources, acetic acid emerged as an undesirable by-product for further PA purification.
URI: http://ir.niist.res.in:8080/jspui/handle/123456789/1778
ISSN: 0273-2289
Appears in Collections:2008

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