Screening of biogenic amine production by lactic acid bacteria isolated from grape must and wine

Tannase activity by lactic acid bacteria isolated from grape must and wine.

We examined a range of oenological lactic acid bacteria species and reference strains for their potential to degrade tannins. Bacterial tannase activity was checked by a spectrophotometric and a visual reading method. None of the strains belonging to the oenological species of the genus Lactobacillus, Leuconostoc, Oenococcus or Pediococcus were tannase producers, with the exception of Lactobaci...

Improved screening procedure for biogenic amine production by lactic acid bacteria.

An improved screening plate method for the detection of amino acid decarboxylase-positive microorganisms (especially lactic acid bacteria) was developed. The suitability and detection level of the designed medium were quantitatively evaluated by confirmation of amine-forming capacity using an HPLC procedure. The potential to produce the biogenic amines (BA) tyramine, histamine, putrescine, and ...

Bacteria isolated from Korean black raspberry vinegar with low biogenic amine production in wine

A high concentration of histamine, one of the biogenic amines (BAs) usually found in fermented foods, can cause undesirable physiological side effects in sensitive humans. The objective of this study is to isolate indigenous Acetobacter strains from naturally fermented Bokbunja vinegar in Korea with reduced histamine production during starter fermentation. Further, we examined its physiological...

BIOGENIC AMINE PRODUCING MICROORGANISMS IN WINE 47 Histamine-producing lactic acid bacteria in wine 48 Tyramine and phenylethylamine-producing lactic acid bacteria in wine 49 Putrescine producing lactic acid bacteria in wine 50 DETECTION OF BIOGENIC AMINE PRODUCING BACTERIA IN WINE

Biogenic synthesis and antimicrobial activity of Silver nanoparticle using exopolysaccharides from Lactic Acid bacteria

Nanotechnology provides the ability to engineer the properties of materials by controlling their size, and this has driven research toward a multitude of potential uses for nanomaterials. This study aimed at biosynthesis and characterization of silver nanoparticles (SNPs) using exopolysaccharides (EPS) of lactic acid bacteria (LAB) and the antimicrobial potential of the biosynthesized SNPs agai...