Food Science and Preservation (한국식품저장유통학회지)

The Korean Society of Food Preservation (한국식품저장유통학회)
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Preparation and characteristics of Haliotis Discus Hannai Ino (abalone) viscera Jeotgal, a Korean fermented seafood

전복내장 젓갈의 제조 및 품질특성

  • Li, Jinglei (Department of Food Science and Technology, Mokpo National University) ;
  • Kim, Bo-Sub (Department of Food Science and Technology, Mokpo National University) ;
  • Kang, Seong-Gook (Department of Food Science and Technology, Mokpo National University)
  • 이정뢰 (국립목포대학교 식품공학과) ;
  • 김보섭 (국립목포대학교 식품공학과) ;
  • 강성국 (국립목포대학교 식품공학과)
  • Received : 2013.06.05
  • Accepted : 2013.12.15
  • Published : 2014.02.28
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Abstract

We prepared Jeotgal with Haliotis Discus Hannai Ino (abalone) viscera and the studied the physicochemical properties. Abalone viscus was fermented with varying amounts of salt for 60 days in order to prepare for the Jeotgal. During the fermentation, we measured the change of pH, volatile basic nitrogen (VBN), amino nitrogen (AN) and protease activity. After the fermentation, we examined the composition of free amino acids and sensory evaluation. The pH decreased with the fermentation, which was not significant (from 5.5 to 6.5). After the fermentation, the highest VBN was 96.7 mg/g, while the highest AN value was 406.3 mg/g. Unlike VBN and AN, the protease activity increased and reached the highest activity at the 30th day, and then decreased afterward. Based on the results, it was deduced that higher salinity restrained the fermentation and lowered the VBN, AN and protease activity. The total free amino acids of abalone Jeotgal, which were analyzed after the fermentation, (62.75 mg/g) was more than twice the amount in the abalone viscera before the fermentation (30.37 mg/g). We prepared abalone viscera Jeotgal and studied the characteristics for the first time. This will provide us with useful information for future related researches.

본 연구는 전복내장을 이용하여 젓갈을 제조과정 중 이화학적 변화와 제조된 젓갈의 품질특성에 대하여 조사하였다. 전복내장의 영양학적 성분을 분석한 결과 탄수화물, 단백질 및 미네랄이 풍부하여 젓갈발효에 우수한 성분특성을 갖고 있었다. 젓갈 발효중 pH는 경시적으로 감소하는 경향을 보였으며 염도가 pH 변화에 영향을 미치지 않았다. 휘발성염기질소함량은 발효중 염농도에 따라 현저한 영향을 받았으며 고염발효의 경우 저염발효에 비하여 휘발성염기질소 함량이 현저하게 낮음을 알 수 있었다. 아미노태질소 함량은 발효중 꾸준히 증가하는 경향을 보였으며, 염농도가 낮을수록 높은 값을 보였으나 염농도에 따른 변화는 크지 않음을 알 수 있었다. 발효과정중 protease 활성 변화를 측정한 결과 고염에서 활성이 떨어지는 경향을 보였으며 발효 30 일경 최고 활성을 보였다. 전복내장과 발효 전복내장젓갈의 유리아미노산 함량을 분석한 결과 젓갈 중 7종의 아미노산이 내장에 비하여 낮게 나타났으며 26 종의 아미노산이 높게 나타났다. 전복내장 젓갈의 총유리아미노산 함량은 62.75 mg/g 으로 전복내장 30.37 mg/g에 비하여 약 2배 증가하였다. 관능평가 결과 색과 종합기호도에서 우수하였으며 상품화를 위해서는 맛과 향의 개선이 필요한 것으로 판단되었다. 전복내장젓갈에 대한 최초의 연구논문으로 향 후 타 연구에 기초자료를 제공할 수 있을 것으로 생각된다.

Keywords

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