Determination of Optimum Sterilization Condition for the Production of Retorted Kimchi Soup

레토르트 처리한 김치찌개 제품의 최적 살균조건 결정

  • Cheon, Hee Soon (Dept. of Food and Nutrition, Seoul National University) ;
  • Park, Eun-Ji (Dept. of Food Science and Engineering, Ewha Womans University) ;
  • Cho, Won-Il (CJ Foods R&D, CJCheiljedang Corporation) ;
  • Hwang, Keum Taek (Dept. of Food and Nutrition, Seoul National University) ;
  • Chung, Myong-Soo (Dept. of Food Science and Engineering, Ewha Womans University) ;
  • Choi, Jun-Bong (Graduate School of Hotel and Tourism, The University of Suwon)
  • 천희순 (서울대학교 식품영양학과) ;
  • 박은지 (이화여자대학교 식품공학과) ;
  • 조원일 (CJ제일제당(주) 식품연구소) ;
  • 황금택 (서울대학교 식품영양학과) ;
  • 정명수 (이화여자대학교 식품공학과) ;
  • 최준봉 (수원대학교 호텔관광대학원)
  • Received : 2014.09.15
  • Accepted : 2014.12.05
  • Published : 2014.12.30

Abstract

In order to optimize process conditions for manufacturing retorted Kimchi soup by using stationary and rotary types systems were applied for sterilization process. For investigating the differences in heat penetration characteristics during sterilization, Kimchi soup was packed into retort pouches, and sterility ($F_0$ value) at various positions in the product was measured through a wireless $F_0$ sensor. Heat penetration characteristics were significantly affected by sterilization method. From data analysis, optimum ranges of sterilization temperature and time was determined to be $120.7^{\circ}C$, 13 min for rotary type and $120.7^{\circ}C$, 20 min for stationary type. At those conditions, they had similar sterility ($F_0$ value). The results showed that rotation provides faster heat penetration and more uniform sterility than various positions of the product. These results derived a lot of advantages from related industry. For instance, many of the more viscous semi-liquid products and heat sensitive natural products could be sterilized in the lager pouch sizes without overcooking or scorching. Hence, current study suggests that rotary type retort would make it possible not only to reduce processing times as 35~45%, but also to improve the quality of product as overall taste, flavor, color, and texture with significant difference (p<0.05).

레토르트 김치찌개의 최적 가열 살균 조건 설정을 위해 정치식 및 회전식 레토르트 방식을 이용하여 최적화 연구를 수행하였다. 연구 고찰 결과 가열 특성은 레토르트 살균 방식에 의해 영향을 많이 받아 회전식에서는 $120.7^{\circ}C$, 13분, 정치식에서는 $120.7^{\circ}C$, 20분의 가열 살균이 최적 공정 조건으로 나타났다. 두 가지 레토르트 방식에서 김치찌개 파우치 내 냉점의 $F_0$ 값은 동일한 결과를 보여 회전식이 정치식 보다 승온이 더 빠르며, 또한 빠른 온도 상승으로 시료 위치별 온도 편차도 적게 발생하였다. 이러한 전열 특성으로 냉점에서 동일 $F_0$ 값 도달에 있어 회전식 레토르트 방식이 정치식에 비해 가열 살균시간이 35~45%의 단축되는 큰 장점이 있어 전반맛, 향, 색상과 조직감이 유의차 (p<0.05) 있게 향상되었다. 이러한 장점으로 육, 해물, 야채 등의 고형물이 포함되어 있는 다양한 메뉴의 레토르트 파우치 식품의 관능품질이 크게 향상될 것으로 기대된다.

Keywords

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