Journal of the Korean Society of Food Science and Nutrition (한국식품영양과학회지)

The Korean Society of Food Science and Nutrition (한국식품영양과학회)
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Prevention of Quality Changes in the Cultured Wild Ginseng During Storage

산삼배양근의 저장 중 품질변화 억제

  • Whang, Jong-Hyun (Division of Food and Biotechnology, Chungju National University) ;
  • Yu, Kwang-Won (Division of Food and Biotechnology, Chungju National University) ;
  • Park, Sung-Sun (Dept. of Food and Nutrition, Sungshin Women's University) ;
  • Koh, Jong-Ho (Dept. of Bio-Food, Korea BioPolytechnic College) ;
  • Oh, Sung-Hoon (Dept. of Food and Biotechnology, Ansan College of Technology) ;
  • Suh, Hyung-Joo (Dept. of Food and Nutrition, Korea University) ;
  • Lee, Sang-Hwa (Dept. of Food and Nutrition, Seowon University)
  • 황종현 (국립충주대학교 식품생명공학부) ;
  • 유광원 (국립충주대학교 식품생명공학부) ;
  • 박성선 (성신여자대학교 식품영양학과) ;
  • 고종호 (한국폴리텍바이오대학 바이오식품분석과) ;
  • 오성훈 (안산공과대학 식품생물공학과) ;
  • 서형주 (고려대학교 식품영양학과) ;
  • 이상화 (서원대학교 식품영양학과)
  • Published : 2008.10.31
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Abstract

Physicochemical changes were investigated for the shelf-life extension of cultured wild-ginseng roots during storage with various pre-treatments with blanching, CAMICA-SD and DF-100 and treatments with citric acid and vitamin C. The pH of cultured wild-ginseng roots showed the range of $6.06{\sim}6.42$ at $10^{\circ}C$, but showed higher ranges of $6.08{\sim}6.91$ and $6.08{\sim}8.68$ at 20 and $30^{\circ}C$, respectively. Browning index (a/b) was increased with increasing storage temperature, and the index at 10 and $30^{\circ}C$ were 0.405 and 0.469 after 2 weeks, respectively. Browning index and viable cell number of CAMICA-SD pre-treatment showed little changes compared to pre-teatment with blanching or DF-100. When the cultured wild-ginseng roots were treated with 1.0% citric acid and 0.2% DF-100 after pre-treatments with CAMICA-SD, viable cell number was slightly increased to $4.9{\times}10^2CFU/g$ for 3 weeks storage at $10^{\circ}C$. The mixture of citric acid and DF-100 was also used to prevent the growth of microbiology and to reduce browning reaction, especially enzymatic browning reaction. The mixture might effectively extend shelf life of the cultured wild-ginseng roots.

산삼배양근 수확 후 저장중의 성분 변화를 측정하였으며, 이를 토대로 저장성 향상을 위해 멸균수, CAMICA-SD와 DF-100에 의한 전처리 및 전처리 후 산미료인 구연산, 산화 방지제로서 비타민 C 처리하여 저장연장효과를 측정하였다. $10^{\circ}C$ 저장 중 pH 범위는 $6.06{\sim}6.36$으로써 초기 pH 6.08에 비하여 변화가 적었으나, $20^{\circ}C$와 $30^{\circ}C$의 경우에는 pH가 $6.91{\sim}8.68$로써 미생물의 오염에 의한 변질과 함께 pH가 크게 증가하였다. 갈색도 a/b 값 또한 저장온도가 높을수록 증가하여, 초기값 0.131에 비하여 2주 후 $10^{\circ}C$와 $30^{\circ}C$에서는 각각 0.405와 0.469의 갈색도를 보여주므로써 저온저장이 품질유지에 중요한 요소임을 알 수 있다. 멸균수, 살균제 및 미생물 억제제가 첨가된 용액에 침지처리하고, $10^{\circ}C$에서 2주간 저장하면서 저장기간에 따른 미생물의 변화를 분석한 결과 염소계 살균제인 CAMICA-SD처리수를 이용 침지 처리한 경우 비교적 안정한 균수를 유지하여 보존성의 연장가능성을 보여주었다. CAMICA-SD(500 ppm)용액으로 전처리된 산삼배양근에 DF-100, 구연산, 비타민 C를 첨가하여 $10^{\circ}C$에 3주간 저장 시 1.0% CA와 0.2% DF-100을 첨가한 용액에 저장한 경우에는 미생물의 증식이 거의 이루어지지 않고 $4.9{\times}10^2CFU/g$ 수준으로써 위생적으로 안전한 상태를 유지하였으며, 갈색도 a/b값도 대조구의 경우 0.38로 크게 증가한 반면 CA와 DF-100처리구는 0.02로써 초기의 색상을 그대로 유지하여 저장안정성이 우수하였다. 따라서 구연산 첨가에 의해 pH를 일정 범위로 조절하고 미생물 생육제어제로서 DF-100을 적정농도로 사용하면 미생물의 오염을 억제하면서 장기간 산삼배양근을 저장할 수 있을 것으로 판단된다.

Keywords

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