Reference : Characterization of lactic acid bacteria isolated from poultry farms in Senegal
Scientific journals : Article
Life sciences : Microbiology
Life sciences : Biotechnology
http://hdl.handle.net/2268/26351
Characterization of lactic acid bacteria isolated from poultry farms in Senegal
English
Coulibaly, Ibourahema mailto [Université de Liège - ULg > > > Doct. sc. agro. & ingé. biol.]
Dubois Dauphin, Robin [Université de Liège - ULg > Gembloux Agro-Bio Tech > Gembloux Agro-Bio Tech >]
Destain, Jacqueline mailto [Université de Liège - ULg > Gembloux Agro-Bio Tech > Gembloux Agro-Bio Tech >]
Thonart, Philippe mailto [Université de Liège - ULg > Gembloux Agro-Bio Tech > Gembloux Agro-Bio Tech - Biochimie et microbiologie industrielles >]
2008
African Journal of Biotechnology
Academic journals
7
12
Academic Journals
2006-2012
Yes
International
1684-5315
Lagos
Nigeria
[en] Characterization ; lactic acid bacteria ; Lactobacillus ; L (+)-lactic acid, ; D (-)-lactic acid ; optical isomers
[en] The group that includes the lactic acid bacteria is one of the most diverse groups of bacteria known and these organisms have been characterized extensively by using different techniques. In this study, thirty lactic acid bacterial strains were isolated from soils chicken faeces and feathers. A total of nineteen isolates were obtained and by sequential screening for catalase activity and Gram-staining, eight were determined to be LAB out of which six were established to be homofermentative by the gel plug test.
Five isolates were identified by use of the API 50CHL kit and four Lactobacilli strains and one Lactococci strain were selected to study their growth and lactic acid production profiles in a time course experiment. The Lactobacilli strains, both isolated from faeces, produced higher amounts of cells and lactic acid from soils as compared to the lactococci strain isolated from feathers. L (+)-lactic acid is the only optical isomer for use in pharmaceutical and food industries because is only adapted to assimilate this form. The optical isomers of lactic acid were examined by L (+) and D (-) lactate dehydrogenase kit. Lactobacilli strains produced combination of both optical isomers of lactic acid.
Among them, Lactobacillus casei subsp. casei produced the low amount of D (-)-lactic (2%). The optimum rates of glucose for lactic acid production by Lactobacillus strains were 180 and 120 g/l for Lactobacillus plantarum and Lactobacillus paraplantarum, respectively.
Wallon Center for Industrial Biology, Bio-Industry Unit
Gembloux Agricultural university
Researchers ; Professionals ; Students ; General public ; Others
http://hdl.handle.net/2268/26351
also: http://hdl.handle.net/2268/25306

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