Effect of fatty acids on growth of conjugated-linoleic-acids-producing bacteria in rumen.
Microorganisms with high activity of linoleic acid delta12-cis,delta11-trans-isomerase were isolated from the digestive tract of ruminants and characterized. The isolate with the highest isomerase activity was identified as Pseudobutyrivibrio ruminis. The susceptibility of this strain to 3 fatty acids added to the grow medium was determined. A significant inhibition of bacterial growth (during a 3-d period) by linoleic acid (0.1 %) and oleic acid (5 ppm) was observed; no inhibition was found in the presence of stearic acid.
Koppová
I
I
Institute of Animal Physiology and Genetics, Academy of Sciences of the Czech Republic, Prague, Czechia. koppova@iapg.cas.cz
Lukás
F
F
Kopecný
J
J
D000818:Animals; D005227:Fatty Acids / Q000378:metabolism*; D006089:Gram-Negative Anaerobic Bacteria / Q000254:growth & development* / Q000302:isolation & purification / Q000378:metabolism; D044243:Linoleic Acids, Conjugated / Q000378:metabolism*; D012417:Rumen / Q000382:microbiology*; D012418:Ruminants / Q000382:microbiology
D005227:Fatty Acids; D044243:Linoleic Acids, Conjugated