Korean Journal of Food Science and Technology (한국식품과학회지)

Korean Society of Food Science and Technology (한국식품과학회)
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Probiotic properties and safety assessment of lactic acid bacteria isolated from salt-fermented anchovy

멸치 젓갈로부터 분리된 젖산세균의 프로바이오틱 특성 및 안전성 평가

  • Lim, Eun-Seo (Department of Food Science & Nutrition, Tongmyong University) ;
  • Kim, Young-Mog (Division of Food Science and Biotechnology, Pukyong National University) ;
  • Lee, Eun-Woo (Department of Life Science and Biotechnology, Dongeui University)
  • Received : 2016.05.04
  • Accepted : 2016.06.08
  • Published : 2016.08.31
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Abstract

This study was conducted to evaluate the functional characteristics and safety properties of lactic acid bacteria isolated from salt-fermented anchovy, a putative probiotic candidate. The following isolates were identified by biochemical profiles, carbohydrate fermentation patterns, and 16S rRNA sequencing: Enterococcus faecium AJ06, Leuconostoc mesenteroides AJ13, Pediococcus halophilus AJ22, Lactobacillus sakei AJ29, and Pediococcus pentosaceus AJ35. The strains AJ06, AJ22, AJ29 exhibited high tolerance to simulated gastric and intestinal juices and were able to produce bile salt hydrolase on MRS agar plates supplemented with taurocholic acid and/or taurodeoxycholic acid. The strains AJ22 and AJ29, which demonstrated high adherence to Caco-2 cells and resistance to various antibiotics, effectively inhibited the growth of food-borne pathogens by the production of antimicrobial substances. These strains did not show ${\alpha}-$ or ${\beta}$-haemolysis on blood agar. Furthermore, biogenic amines in MRS broth containing the precursor amino acids were not mutagenic in Salmonella Typhimurium TA98 and TA100.

멸치 젓갈로부터 분리한 젖산세균을 대상으로 프로바이오틱 균주로서의 기능적 특성과 안전성을 평가하였다. 분리된 균주는 생화학적 특성과 당 발효능 및 염기순서 분석을 통해 Enterococcus faecium AJ06, Leuconostoc mesenteroides AJ13, Pediococcus halophilus AJ22, Lactobacillus sakei AJ29 및 Pediococcus pentosaceus AJ35로 동정되었다. AJ06, AJ22 및 AJ29 균주들은 펩신이 첨가된 인공 위액 및 쓸개즙액에서 강한 저항성을 나타내었고, taurocholic acid 혹은 taurodeoxycholic acid가 첨가된 MRS 한천 평판 배지 상에서 쓸개즙분해효소를 생산하였다. 특히, Caco-2 세포에 대한 높은 부착능과 다양한 항생제에 대한 저항성을 나타낸 AJ22와 AJ29 균주는 항균물질 생산으로 인해 식중독균의 증식을 효과적으로 저해하였다. 이들 균주는 혈액 한천 평판배지 상에서 알파 및 베타용혈독을 나타내지 않았고, 아미노산 전구체가 함유된 MRS 액상배지 내에서 생체 아민을 생산하지 않았으며, Salmonella Typhimurium TA98 and TA100 균주에 대한 돌연변이도 유발하지 않았다.

Keywords

References

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