Food Science and Preservation (한국식품저장유통학회지)

The Korean Society of Food Preservation (한국식품저장유통학회)
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Effect of manufacturing process using superheated steam on the quality improvement of pickled radish product

과열증기를 이용한 무우절임 제품의 제조공정 설정 및 품질 개선효과

  • Received : 2017.06.14
  • Accepted : 2017.08.15
  • Published : 2017.08.30
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Abstract

This study was conducted to develop radish as a food product for home meal replacement using superheated steam (SHS). Also, the change of quality characteristics was studied during their storage. The radish cuts were treated with SHS for 0, 3, 5, and 7 min, respectively, followed by complete drying at $80^{\circ}C$ for 6 hours. The results showed that radishes restored with mixed solution (drinking water:sugar:vinegar:salt=2:1:0.8:0.1) were harder than those restored with drinking water. All radishes were stored at 5, 10 and $15^{\circ}C$ for 56 days to investigate the changes of quality characteristics during the storage. Radishes in the control group, restored with drinking water and stored at $15^{\circ}C$, were spoiled after 7 days of storage. The radish in the experimental group did not show any change in the water content; except an increase on the first day of storage. The hardness of radish decreased with an increase in the storage period. It was found that microbial growth was inhibited due to low pH of the mixed solution, in which radishes of the experimental group were immerse.

본 연구는 과열증기(superheated steam, SHS) 기술을 이용하여 높은 품질의 편의식 식자재로서의 무를 제조하고, 제조한 무의 저장 중 품질변화를 알아보기 위해 수행하였다. 적당히 자른 무를 1차 과열증기(오븐온도 $250^{\circ}C$, 증기온도 $370^{\circ}C$)에서 각각 0, 3, 5 및 7 분간 처리한 후, $80^{\circ}C$에서 6 시간동안 완전히 건조 하였다. 본 연구 결과, 혼합용액(음용수:설탕:식초:소금=2:1:0.8:0.1)에서 복원한 무가 음용수만으로 복원한 무에 비해 좀 더 단단하였다. 5, 10 및 $15^{\circ}C$에서 56일간 저장한 모든 무를 품질변화를 측정하였다. 물로 복원하고 $15^{\circ}C$에 저장한 대조구 무는 저장 7일만에 부패하였다. 실험구 무는 저장 1일을 제외하고, 수분 함량에 변화가 없었다. 저장기간이 증가함에 따라 무의 단단한 조직감이 감소하였다. 혼합용액으로 복원한 무는 낮은 pH로 인해 미생물 성장이 억제되었다. 따라서 SHS의 사용과 혼합용액을 이용한 복원은 손쉽게 무 제품을 개발할 수 있었다.

Keywords

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