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논문 상세정보

간장태 신속 대두발효 종균으로의 Enterococcus faecium

Rapid Fermentation Starter Enterococcus faecium of Soybean for Soy-Sauce Like Product

초록

풍미가 강력하고 신속발효가 되는 청국장의 우점종인 젖산균 Enterococcus spp.를 발효종균으로 활용하여 재래식 간장모양의 풍미를 가지는 대두발효물을 제조하고자 하였다. 119종의 Enterococcus spp. 중에서 protease 활성이 높은 8종을 선발하여 E. faecium 4종, E. faecalis 3종, E. gallinarium 1종으로 동정하였다. 8종의 항생제에 내성이 낮았고, vancomycin 유전자도 없으며, 5% NaCl 함유 배지에서도 protease 분비가 우수한 E. faecium O24를 발효 종균으로 선정하였다. 증자한 대두 백태에서 생육이 우수하였으며, 발효생성 조미 아미노산 중 80 mg% glutamic acid, aspartic acid를 생성시켰으며, lactic acid와 여러 유기산을 생성하였다. Z. rouxii와 C. versatilis와의 혼합배양으로 간장 고유취인 maltol, guaiacol 등의 향기성분도 합성됨을 확인하였다. 그러므로 청국장 젖산균인 Enterococcus spp.는 신속하게 다양한 향미성분을 생산하여 간장태의 대두 발효의 종균으로 사용이 가능할 것으로 보인다.

Abstract

To produce rapidly the traditional Kanjang soy sauce-like product with rich flavors, lactic acid bacteria of Enterococcus spp. isolated from Chungkukjang was used as one of starter cultures. Among 119 Enterococcus spp., eight strains were selected by protease-secreting activities and identified as four E. faecium, three E. faecalis, and one E. gallinarium. The strains showed low resistances toward eight antibiotics and had no resistant genes to the vancomycin. Especially, E. faecium O24 was cultivated well on 5% NaCl medium that was selected for further study as the starter. E. faecium O24 grew well on the steamed soybean and the counts increased by ten times overnight, which produced mostly 80 mg% glutamic acid and aspartic acid as the seasoning amino acids on the product. Various organic acids including principal lactic acid were also produced. Flavors of maltol and guaiacol, typical soy-sauce flavor, were produced in the mixed cultures of Zygosaccharomyces rouxii and Candida versatilis. Therefore, E. faecium O24 could be a starter of soybean fermentation for soy sauce-like product with rich flavors rapidly.

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이 논문을 인용한 문헌 (2)

  1. Jeon, Min-Hee ; Park, Mi-Ra ; Park, Yong-Soo ; Hwang, Hyun-Jung ; Kim, Sung-Gu ; Lee, Sang-Hyeon ; Kim, Mi-Hyang 2011. "Effect of Pine (Pinus densiflora) Needle Extracts on Antioxidant Activity and Proliferation of Osteoclastic RAW 264.7 Cells" 한국식품영양과학회지 = Journal of the Korean Society of Food Science and Nutrition, 40(4): 525~530 
  2. Kim, Young-Jik 2011. "Effects of Dietary Supplementation of Pine Needle Powder on Carcass Characteristics and Blood Cholesterol Contents of Broiler Chicken" 한국가금학회지 = Korean journal of poultry science, 38(1): 51~57 

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