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Improving the production of conjugated linoleic acid from sunflower oil by lactic acid bacteria spp: Effect of calcium carbonate supplementation in fermentation medium

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Title Improving the production of conjugated linoleic acid from sunflower oil by lactic acid bacteria spp: Effect of calcium carbonate supplementation in fermentation medium
 
Creator Zongo, Koka
Yazici, Fehmi
Çon, Ahmet Hilmi
 
Subject Biosynthesis
Conjugated linoleic acid
Inhibition
Lactic acid bacteria
Linoleic acid
Mitigation
 
Description 741-750
Conjugated linoleic acid (CLA) is a polyunsaturated fatty acid with various positional and geometric isomers of linoleic
acid (LA) present mainly in food items and produced endogenously in non-ruminants and humans or through fermentation
process. It is associated with health-beneficial effects and subject to more research on its natural sources (ruminant-derived
foods) and strategies to increase the content in various foodstuffs. Although several studies have reported the most common
intake value of 0.8 g/day (0.6 to 3.0 g/day), research for raising in situ concentration should focus on strategies such as
in vitro bioconversion of its precursors by bacteria and supplementation of LA rich-oils in foods fermentation process.
In this study, the ability of some lactic acid bacteria (LAB) from diverse samples to produce CLA from sunflower oil
and the effect on production yield of fermentation medium supplementation with carbonate calcium were
investigated. Results showed that ten Limosilactobacillus fermentum and Enterococcus faecium produced trans-10,
cis-12-CLA isomer accounted for at least 85% of total CLA ranging from 4.64 to 5.22 μg/mL. Despite the
fermentation medium supplementation with CaCO3 enhanced the production yield, the residual LA inhibitory effect
on bacteria growth governing CLA biosynthesis process was not mitigated. So, although our LAB strains can produce
CLA, the more the LA concentration goes up, the more the conversion rate downgrades. Further studies on strains behavior
in a wide range of LA concentrations will help establish a stable relationship between bacteria and LA in the presence
of CaCO3.
 
Date 2022-08-01T06:47:48Z
2022-08-01T06:47:48Z
2022-07
 
Type Article
 
Identifier 0975-0959 (Online); 0301-1208 (Print)
http://nopr.niscpr.res.in/handle/123456789/60226
 
Language en
 
Publisher NIScPR-CSIR,India
 
Source IJBB Vol.59(7) [July 2022]