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Quality characteristics of a Kimchi containing Oriental melon peel

참외 껍질을 첨가한 김치의 품질 특성

  • Nam, Joo-Hyun (Department of Food Nutrition and Culinary Arts, Daegu Technical University) ;
  • Ahn, Joungjwa (Department of Food Science and Industry, Jungwon University) ;
  • Suh, Jun-Kyu (Department of Horticulture, Kyungpook National University) ;
  • Kim, Do-Wan (Department of Food Science and Industry, Jungwon University)
  • 남주현 (대구공업대학교 호텔식음료조리과) ;
  • 안정좌 (중원대학교 한방식품산업학과) ;
  • 서전규 (경북대학교 원예과학과) ;
  • 김도완 (중원대학교 한방식품산업학과)
  • Received : 2013.05.28
  • Accepted : 2013.08.20
  • Published : 2013.08.30

Abstract

This study was performed in order to evaluate the quality properties of Kimchi containing 0%, 10%, 20%, and 30% of oriental melon peel parts. The Kimchi was fermented for 28 days at a temperature of $15^{\circ}C$. The pH, titratable acidity, total microbial counts, and lactic acid counts were measured, and the sensory characteristics including taste, color, chewiness, and overall acceptability were evaluated. During the 28 days of fermentation, the pH dramatically decreased between the 7th and 21st day of the fermentation period, and maintained thereafter in control (0%). However, the pH in peel-added groups slightly increased up to the 14th day and decreased up to the 21st day with 4.13~4.41. The total microbial counts in control were significantly higher than those in the peel-added groups. This trend was maintained throughout the fermentation period. A similar trend was found in the lactic acid microbial counts throughout the fermentation period. During the sensory analysis, the values of taste were significantly higher in the 20% and 30% peel-added Kimchi, while the chewiness and overall acceptability were significantly higher in the 20% peel-added Kimchi than those in control. This study showed an improvement in the storage period of Kimchi products with 20% of oriental melon peel, as well as the possibility of a commercial Kimchi manufacture.

본 연구는 참외 껍질의 첨가가 배추 김치의 맛과 발효 숙성에 미치는 영향을 알아보기 위해 김치 제조에 절임배추 무게를 기준으로 참외 껍질 첨가량을 0, 10, 20, 30%(w/w)로 첨가량을 달리하여 김치를 제조한 후 $15^{\circ}C$에서 28일간 발효시키면서 pH, 산도, 총균수, 젖산균수 등의 이화학 및 미생물학적 특성을 조사하고, 관능적 특성인 맛과 색도, 씸힘성, 전체적인 기호도 등을 평가하였다. 참외 김치의 pH 변화는 발효 초기 모든 실험구에서 pH 4.76~4.87로 비슷하였으나, 대조구에서는 7~21일사이에 급격히 pH가 떨어져 과숙 현상을 보였으나, 참외 껍질 첨가구에서는 14일까지 유지하다가 14~21일 사이에 pH 4.13~4.41에 도달하여 28일까지 유지되었다. 참외 김치의 산도 변화는 초기에는 참외 껍질 첨가구에서 다소 높았으나, 발효가 진행되면서 오히려 대조구에 비해 낮은 산도 값이 나타났다. 참외 김치의 총균수를 측정한 결과, 발효 7일부터 참외 껍질 첨가구의 총균수가 대조구에 비해 낮게 관찰되면서 발효 마지막까지 유지되었다. 참외 김치의 젖산균 수를 관찰한 결과도 총균수와 비슷한 양상을 보였는데, 이것은 참외 껍질의 항균 작용에 의해 김치의 발효 및 숙성이 지연되는 것으로 생각된다. 참외 김치의 관능검사 결과, 맛은 20%와 30% 참외 깝질 첨가구에서, 씸힘성은 20% 참외 껍질 첨가구에서 대조구에 비해 유의적으로 높게 나타났으며, 전체적인 기호도에서는 참외 껍질 20% 첨가구이 가장 높은 선호를 나타내었다. 이상의 결과에서 배추 김치에 참외 껍질을 20% 첨가한 처리구가 이화학 및 미생물학적인 실험 결과에서 발효를 지연시키고 적숙기를 연장시켜 주었으며, 관능 검사 결과의 전반적인 기호도에서도 높은 점수를 나타내었다. 따라서 배추 김치를 담글 때 참외 껍질을 첨가하는 것이 발효를 지연시켜 맛과 저장성을 향상시켜 줄 것으로 기대된다.

Keywords

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