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

The Korean Society of Food Science and Nutrition (한국식품영양과학회)
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Storage Attribute of Angelica keiskei Juice Treated with Various Electrolyzed Water

전기분해수 세척방법을 이용한 신선초 녹즙의 저장 특성

  • Park, Yeo-Jin (Dept. of Food Science and Technology, Chungbuk National University) ;
  • Yoo, Jae-Yeol (Dept. of Food Science and Technology, Chungbuk National University) ;
  • Jang, Keum-Il (Dept. of Food Science and Technology, Chungbuk National University)
  • Received : 2010.09.09
  • Accepted : 2010.10.22
  • Published : 2010.12.31
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Abstract

The storage attributes of green juice prepared by washing Angelica keiskei with various washing solutions using air bubble method were investigated. The washing solutions were distilled water (DW), sodium hypochlorite electrolyzed water (SHEW), and slightly acidic electrolyzed water (SAEW). During storage at $4^{\circ}C$, the number of bacteria after 1 day was $>10^5$ CFU/mL when DW was used, whereas bacterial growth was $<10^5$ CFU/mL after 4 days when SHEW or SAEW was used. The pH and color were not changed, and the polyphenol content, electron donating ability and total antioxidant ability were decreased slowly with the increase of storage time. No significant difference in any of the measured properties was found among washing methods (p<0.05). Consequently, these results suggest the possible use of electrolyzed water for washing to enhance the shelf life of green juice with A. keiskei because SHEW and SAEW decreased bacterial growth without affecting other properties of the green juice.

본 연구에서는 증류수 및 전기분해수인 차아염소산나트륨수와 미산성차아염소산수를 이용한 신선초 세척방법이 녹즙의 저장 중의 일반세균수, pH, 색도, polyphenol 함량, 전자공여능 및 총 항산화력 변화에 미치는 영향을 분석하였다. 녹즙의 저장기간 중 일반세균수는 증류수 세척 방법에서 저장 24시간 만에 식품공전에서 기준치로 제시한 $10^5$ CFU/mL보다 높은 균수를 보인 반면 전기분해수 세척방법에서 저장 4일이 지나도 $10^5$ CFU/mL 이하의 균수가 유지됨을 확인할 수 있었다. 그리고 저장기간 동안 녹즙의 pH 및 색도는 모두 유의적인 차이를 나타내지 않고 일정범위에서 유지되었으며, 녹즙의 항산화성은 polyphenol 함량, 전자공여능 및 총 항산화력 모두 세척방법 간 유사한 결과를 나타내었고, 저장일수가 증가할수록 감소하는 유사한 경향을 나타내어 녹즙의 저장 중 전기분해수에 의한 영향을 나타내지 않았다. 이는 신선초에 대한 전기분해수 세척 방법이 녹즙의 미생물학적 위험은 감소시키면서 품질에는 영향을 나타내지 않는 결과라고 생각되며, 이는 전기분해수 세척 방법이 녹즙의 품질 및 저장성 향상에 기여할 것으로 생각된다.

Keywords

References

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