산업식품공학 (Food Engineering Progress)

  • 제21권1호
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  • Pages.88-92
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  • 2017
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  • 1226-4768(pISSN)
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  • 2288-1247(eISSN)
한국산업식품공학회 (Korean Society for Industrial Food Engineering)
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동해안 특산 수산발효식품에서 분리된 균주의 항균 및 단백질 가수분해 활성

Antibacterial and Proteolytic Activities of Bacterial Isolates from Ethnic Fermented Seafoods in the East Coast of Korea

  • 박우정 (강릉원주대학교 해양식품공학과) ;
  • 이승환 (경일대학교 식품산업융합학부) ;
  • 이형재 (단국대학교 식품공학과)
  • Park, Woo Jung (Department of Marine Food Science and Technology, Gangneung-Wonju National University) ;
  • Lee, Seung Hwan (School of Food Science and Industry, Kyungil University) ;
  • Lee, Hyungjae (Department of Food Engineering, Dankook University)
  • 투고 : 2016.01.16
  • 심사 : 2017.01.27
  • 발행 : 2017.02.28
⟨ 이전 논문 다음 논문 ⟩

초록

동해안의 특산 수산발효식품 중 가자미밥 식해, 오징어 젓갈, 지누아리 무침 등 총 3종의 수산발효식품에서 233개의 균을 분리하였다. 5종의 주요 식중독 균에 대한 항균활성을 측정한 결과 총 분리균 중 36개(15.5%)가 B. cereus ATCC 14579에 대해 항균활성을 나타내 가장 많은 분리균이 이 지시균을 저해하였다. 그 다음으로 S. aureus KCTC 1916, L. monocytogenes ATCC 15313 순으로 다수의 분리균이 항균활성을 나타냈다. 특히 오징어 젓갈에서 분리한 균주 중 각각 5개(6.0%), 3개(3.6%)가 그람음성 지시균인 E. coli O157:H7 ATCC 43895, Sal. enterica ATCC 4931를 저해하였다. 단백질 가수분해 활성의 경우, 72시간 배양 후, 총 분리균주 중 72개(30.9%)가 활성을 나타냈고, 가장 많은 활성을 나타낸 것은 지누아리 무침 분리균으로 72시간 배양하였을 때 36개(60.0%)가 단백질 가수분해활성을 나타냈다. 본 연구를 통해 수산발효식품에서 분리한 균주가 식중독균을 저해하는 항균물질을 생산한다는 것과 단백질 가수분해 능력을 가진 균주가 존재한다는 것을 알 수 있었다. 활성이 우수한 균주의 확보를 통해 우수 활성균주로부터 천연 항균제를 분리, 적용할 수 있고, 단백질 가수분해활성을 다양한 발효식품 및 더 나아가 저염 수산 발효식품 생산에 활용할 수 있을 것으로 기대된다.

We attempted to investigate antibacterial and proteolytic activities of bacteria isolated from three ethnic fermented seafoods in the east coast of South Korea, gajami sikhae, squid jeotgal, and fermented jinuari (Grateloupia filicina). Bacillus cereus ATCC 14579, Listeria monocytogenes ATCC 15313, Staphylococcus aureus KCTC 1916, Escherichia coli O157:H7 ATCC 43895, and Salmonella enterica serovar Typhimurium ATCC 4931 were selected to determine the antibacterial activity of the bacterial isolates. Among 233 isolates from the three foods, 36 isolates (15.5%) showed antibacterial activity against B. cereus ATCC 14579, the highest incidence of inhibition, followed by S. aureus KCTC 1916 (7.7%) and L. monocytogenes ATCC 15313 (6.0%). However, only five and three strains among the isolates exhibited inhibitory activity against Gram-negative indicators, E. coli ATCC 43895 and Sal. enterica ATCC 4931, respectively. The proteolytic activity of the isolates was determined via hydrolysis of skim milk after 24, 48, and 72 h incubation. After 72 h incubation, 72 out of 233 isolates (30.9%) showed proteolytic activity, and the isolates of fermented jinuari exhibited the highest incidence of proteolytic activity (60%, 36 isolates). These results suggest that ethnic fermented seafoods in the east coast of South Korea might be a promising source of bacterial strains producing antibacterial and proteolytic compounds.

키워드

과제정보

연구 과제번호 : 동해안 해양생물자원 유래의 기능성 생물소재 개발

연구 과제 주관 기관 : 한국해양과학기술진흥원

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피인용 문헌

  1. Effect of high hydrostatic pressure treatment on quality characteristics of squid ‘Sikhae’ prepared with barley flour during storage vol.28, pp.3, 2017, https://doi.org/10.11002/kjfp.2021.28.3.336