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Quality Characteristics of Kimchi Fermented with Abalone or Sea Tangle Extracts

전복과 다시마 추출물을 첨가한 김치의 발효 특성

  • Received : 2012.11.08
  • Accepted : 2012.12.26
  • Published : 2013.03.31

Abstract

This study evaluated the quality characteristics of fermented abalone-kimchi or sea tangle-kimchi during 28 days of storage at $4^{\circ}C$. Abalone and sea tangle were added as extracts compared to a control. We analyzed lactic acid bacteria, pH, acidity, salinity, reducing sugars, free sugars, organic acids, free amino acids, and sensory characteristics. The lactic acid bacteria levels were 4.4~5.3 log CFU/g on day 0, 6.8~7.1 log CFU/g after 7 days, and continued to rise during the fermentation period. The salinity increased slightly over time. As fermentation progressed, pH and reducing sugars, free sugars, and organic acid contents decreased. Free sugars, in particular, dramatically decreased about 70% compared to the initial day. The total free amino acid content was higher in abalone-kimchi. In terms of free amino acid contents, taurine was high in abalone-kimchi, while glutamic acid and aspartic acid content was high in sea tangle-kimchi. The sensory evaluation results show that abalone-kimchi and sea tangle-kimchi had higher scores for their savory taste and overall acceptance compared to the control.

본 연구는 전복 및 다시마 추출물 첨가 김치의 아미노산 함량 및 발효특성에 관해 살펴보았다. 전복와 다시다는 추출물 형태로 첨가하였으며 젖산균, pH, 산도, 염도, 환원당, 유리당, 유기산, 유리 아미노산 및 관능평가를 실시하였다. 젖산균은 결과 초기 4.4~5.3 log CFU/g 수준이었으며 저장 7일째 6.8~7.1 log CFU/g 수준에 도달하였으며 그 이후에는 비슷한 수준을 유지하였다. 환원당과 유리당은 감소하는 경향을 보였으며 이는 젖산균 증식과 상관관계가 있는 것으로 나타났다. 유기산 중 citric acid, malic acid 및 succinic acid는 발효 동안 감소하는 경향을 나타내었으며 lactic acid와 acetci acid는 증가하였다. 아미노산 분석 결과 타우린은 전복 첨가 김치에서 가장 높은 수준을 나타내었으며 glutamic acid와 aspartic acid 함량은 다시마 첨가 김치에서 높은 수준을 보였다. 관능평가 결과 또한 다시마 첨가 김치를 가장 선호하였으며 전복 첨가 김치는 대조구와 비슷한 기호도를 나타내었다.

Keywords

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