Korean Journal of Food Science and Technology (한국식품과학회지)

Korean Society of Food Science and Technology (한국식품과학회)
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Changes in Nutrient Composition and Fermentation Properties of Abalone Mul-Kimchi using Dried Pollack and Licorice Stock

북어국물과 감초국물을 사용한 전복물김치의 발효특성 및 영양성분의 변화

  • Jang, Mi-Soon (Food and Safety Research Center, National Fisheries Research & Development Institute) ;
  • Park, Hee-Yeon (Food and Safety Research Center, National Fisheries Research & Development Institute) ;
  • Nam, Ki-Ho (Food and Safety Research Center, National Fisheries Research & Development Institute)
  • 장미순 (국립수산과학원 식품안전과) ;
  • 박희연 (국립수산과학원 식품안전과) ;
  • 남기호 (국립수산과학원 식품안전과)
  • Received : 2012.06.29
  • Accepted : 2012.08.09
  • Published : 2012.10.31
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Abstract

This study was carried out to investigate changes in nutrient composition and fermentation properties in abalone mul-kimchi using dried pollack stock (AMKP) and licorice stock (AMKL) during storage at $4^{\circ}C$ for 35 days. The levels of moisture (88.37-90.94%) and crude ash (2%) did not differ much between AMKP and AMKL during the 35 days of storage. But crude protein and crude lipid levels decreased gradually until 21 days of storage. AMKP and AMKL fermentation during 21 days led to a decrease in pH, increased acidity, and the highest Leuconostoc sp. count. AMKP and AMKL showed acidity of 0.50% at pH 4.30, when the kimchi samples were ripened properly. Glutamic acid showed the highest content in AMKP and AMKL, and hydroxypoline was the most abundant of all free amino acids. We have provided basic data for commodification research on abalone mul-kimchi.

본 연구는 전복물김치의 국물 주재료로 북어와 감초를 사용한 담금법을 확립하여 제조하고, $4^{\circ}C$에서 김치를 저장하면서 저장기간별로 일반성분, pH, 산도, 젖산균, 구성 및 유리아미노산의 변화를 측정하였다. AMKP와 AMKL의 수분함량은 88.37-90.94%, 조회분 함량은 2%이내였다. AMKP와 AMKL의 조단백질 함량은 저장 21일째까지 감소하다가 저장 28일째 증가하는 경향을 보였고, 조지방 함량은 저장기간 동안 계속해서 감소하는 경향을 보였다. pH의 변화는 저장기간 동안 AMKP 및 AMKL 시료 모두 공통적으로 발효가 진행됨에 따라 감소하였고, 산도는 저장 28일째까지 꾸준히 증가하다가 저장 35일째에는 감소하는 양상을 보였다. AMKP 및 AMKL은 저장 21일째에 산도 0.50-0.54%, pH 4.29-4.30을 나타내어 저장 21일째가 적숙기임을 예측해 볼 수 있었다. 또한 AMKP 및 AMKL는 발효과정 중에 Leuconostoc sp.의 균수가 급격히 증가하여 저장 21일째에 최대값에 도달하였다. 전복물김치 AMKP 및 AMKL의 주요 구성아미노산은 glutamic acid, glycine, aspartic acid 및 arginine 이었고, 그 중에서도 glutamic acid의 함량이 가장 높게 나타났다. 또한 전복물김치 AMKP 및 AMKL의 주요 유리아미노산은 hydroxyproline, taurine 및 arginine이었다. 이상의 결과에서 전복물김치는 저장기간 동안 국물의 종류에 상관없이 동일한 발효양상 및 영양성분의 조성을 보였고, 단백질 급원인 전복의 첨가로 인해 기존에 보고된 일반 물김치의 실험결과에서보다 발효가 지연되고 적숙기가 연장되는 결과를 얻었다. 또한, 전복물김치는 풍부한 아미노산의 용출로 발효에 긍정적인 영향을 주어 맛과 저장성을 향상시켜 줄 것으로 기대되며, 본 연구의 결과는 전복물김치의 상품화 연구의 기초 자료로 활용이 가능 할 것으로 생각된다.

Keywords

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