Abstract

Background: Many investigations have attributed bio-functional properties to a range of conjugated fatty acids (CFAs) of which the conjugated linoleic acid (CLA) and conjugated linolenic acid (CLNA) isomers have displayed potent health beneficial effects in a large number of in vitro and in vivo studies. CLNA isomers are naturally present in high concentrations in a variety of seed oils but relatively in small amount in meat and dairy products. However, some reports have shown the microbial production of such enzymes by lactic acid bacteria that convert linolenic acid (LNA) into CLNA. Present study aims to isolate CLNA producing lactobacilli of different origins and their potential to produce different CLNA isomers in MRS media. Keywords: Lactobacilli, conjugated fatty acid, conjugated linolenic acid, α-linolenic acid and conjugated linoleic acid, linoleate isomerase gene.

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