Food Science and Preservation (한국식품저장유통학회지)

The Korean Society of Food Preservation (한국식품저장유통학회)
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Quality characteristics and functionalities of Korean and Japanese spring Baechu cabbages and the kimchi prepared with such cabbages

한국산 및 일본산 봄배추와 이를 이용하여 제조한 김치의 품질특성과 기능성

  • Park, So-Eun (Department of Food Science and Nutrition, and Kimchi Research Institute, Pusan National University) ;
  • Bong, Yeon-Ju (Department of Food Science and Nutrition, and Kimchi Research Institute, Pusan National University) ;
  • Kim, Hee-Young (Department of Food Science and Nutrition, and Kimchi Research Institute, Pusan National University) ;
  • Park, Kun-Young (Department of Food Science and Nutrition, and Kimchi Research Institute, Pusan National University)
  • 박소은 (부산대학교 식품영양학과 및 김치연구소) ;
  • 봉연주 (부산대학교 식품영양학과 및 김치연구소) ;
  • 김희영 (부산대학교 식품영양학과 및 김치연구소) ;
  • 박건영 (부산대학교 식품영양학과 및 김치연구소)
  • Received : 2013.05.18
  • Accepted : 2013.10.10
  • Published : 2013.12.30
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Abstract

We examined the quality characteristics and functionalities of Korean and Japanese spring Baechu cabbages and the kimchi prepared with them. To study the physiochemical properties of the cabbages and the kimchis, we measured their water content, pH, acidity, microbial counts, and springiness. On the third week of the kimchi fermentation at $5^{\circ}C$, their sensory properties and in vitro DPPH radical scavenging and anticancer activities using AGS human gastric cancer cells were determined. The Japanese Baechu contained 97.1% water, and the Korean Baechu, 92.4%. The comparison of the textures of the raw Baechu and the brined Baechu showed that the Korean Baechu had higher springiness scores than the Japanese Baechu. After four-week fermentation, the springiness score of the kimchi with Korean Baechu was 53.5%, significantly higher than the 41.4% of the kimchi with Japanese Baechu. The kimchi prepared with Korean Baechu had a low total bacterial count but higher Lactobacillus sp. and Leuconostoc sp. counts than the kimchi with Japanese Baechu. The kimchi prepared with Korean Baechu had the highest overall acceptability score in the sensory evaluation test. The DPPH radical scavenging activity of the kimchi with Korean Baechu was 83.2%, and that of the kimchi with Japanese Baechu, 46.1%. When the AGS human gastric cancer cells were treated with the kimchis, the kimchi prepared with Korean Baechu showed a 45% cancer cell growth inhibition rate, and the kimchi with Japanese Baechu, 26%, at 1 mg/mL of methanol extracts. At the 2 mg/mL concentration, the kimchis with Korean Baechu and Japanese Baechu showed 97% and 74% inhibition, respectively. The Korean Baechu showed better quality than the Japanese Baechu, and the kimchi prepared with the Korean Baechu showed better kimchi quality and functionality than the Japanese Baechu.

본 연구에서는 한국산 봄배추와 일본산 봄배추의 품질특성과 기능성을 살펴보고, 이 배추를 이용하여 김치를 제조한 후 $5^{\circ}C$에서 4주 동안 발효하여 이화학적 특성 및in vitro 건강 기능성의 차이를 살펴보았다. 품질특성으로 수분함량, pH, 산도, 총균수, Lactobacillus sp.의 수, Leuconostoc sp.의 수, 조직감, 관능평가를 실시하였으며 적숙기에서의 항산화, in vitro 항암 기능성 실험을 하였다. 일본산 배추는 97.1%의 수분을 함유하였고 한국산 배추는 92.4%의 수분을 함유한 것으로 나타나 일본산배추가 한국산 배추에 비해 높은 수분을 함유하고 있었다. 생배추와 절임배추에서 한국산 배추가 일본산 배추보다 탄력성이 높았고 4주간 숙성한 김치의 탄력성은 한국산 김치가 53.5%로, 일본산 김치(41.4%)보다 월등히 높은 것을 확인할 수 있었다. 한국산 배추로 제조하여 발효한 김치는 총균수는 낮으면서 젖산균인 Lactobacillus sp.와 Leuconostoc sp.의 수는 높게 나타났다. 관능평가에서 한국산 배추로 제조한 김치의 관능적 만족도가 높게 평가되었다. 발효 3주차의 김치를 이용하여 DPPH radical 소거능을 측정한 결과 한국산 배추로 제조한 김치는 83.2%, 일본산 배추로 제조한 김치는 46.1%로 한국산 배추로 제조한 김치에서 약 2배 정도 높은 DPPH radical 소거효과를 나타냈다. AGS 인체 위암세포에 김치의 메탄올 추출물을 1 mg/mL의 농도로 처리했을 때 한국산 배추로 제조한 김치는 45%, 일본산 배추로 제조한 김치는 26%의 암세포 성장 저해율을 나타냈고, 2 mg/mL의 농도에서는 각각 97%, 74%의 암세포 성장 저해율을 나타내어 한국산 배추로 제조한 김치에서 저해 효과가 높은 것으로 나타났다. 결국 한국산 배추의 품질이 우수하고 이로 제조한 김치가 일본산 배추로 제조한 김치보다 품질이 우수하고 더 높은 항산화 및 항암기능성(AGS 위암세포)을 나타내었다.

Keywords

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