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KMID : 0364820140500040319
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Korean Journal of Microbiology
2014 Volume.50 No. 4 p.319 ~ p.326
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Characterization of Biogenic Amine-reducing Pediococcus pentosaceus Isolated from Traditionally Fermented Soybean Products
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Oh Heon-Hwa
Ryu Myeong-Seon
Heo Jun
Jeon Sae-Bom
Kim Young-Sang
Jeong Do-Youn
Uhm Tai-Boong
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Abstract
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Two bacterial strains, named as LE17 and LE22, were isolated from traditionally fermented soybean products in
order to select lactic acid bacteria for the reduction of biogenic amines and harmful bacteria. Both strains were
identified as Pediococcus pentosaceus by 16S rRNA sequence analysis and additional biochemical tests. The strain
LE17 reduced the amines by 13.7% for histamine and by 25.9% for tyramine, when it grew in minimal synthetic
media containing 0.1% (w/v) histamine and 0.1% tyramine at 30℃ for 48 h, while the strain LE22 reduced the
amines by 23.7% for histamine and by 15.7% for tyramine. Both strains also had broad inhibition spectra against
pathogens. Considering their properties, they could be used as starters for industrial soybean fermentation.
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KEYWORD
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Pediococcus, anti-bacterial agents, biogenic amines, lactic acid bacteria, soybean products
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