Journal of Food Hygiene and Safety (한국식품위생안전성학회지)

The Korean Society of Food Hygiene and Safety (한국식품위생안전성학회)
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Effects of Additives on the Quality Improvement of Minced Ginger (Zingiber officinale Roscoe) During Storage

생강(Zingiber officinale Roscoe) 다대기의 저장 중 품질개선을 위한 첨가물 효과

  • Lee, Myung-Hee (Region Food Industry Research Group, Korea Food Research Institute) ;
  • Lee, Kyoung-Hae (Dept. of Food Science & Biotechnology, Dongnam Health University) ;
  • Cho, Chang-Won (Region Food Industry Research Group, Korea Food Research Institute) ;
  • Kim, Kyung-Tack (Region Food Industry Research Group, Korea Food Research Institute)
  • 이명희 (한국식품연구원 지역특화산업연구단) ;
  • 이경혜 (동남보건대학 식품생명과학과) ;
  • 조장원 (한국식품연구원 지역특화산업연구단) ;
  • 김경탁 (한국식품연구원 지역특화산업연구단)
  • Received : 2010.01.21
  • Accepted : 2010.02.25
  • Published : 2010.03.31
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Abstract

The effects of vinegar, alcohol and ascorbic acid on the color, microorganism, sensory properties and flavor pattern of minced ginger (MG) were investigated during storage for 28 days at $30^{\circ}C$. The values of L (lightness), a (redness) and b (yellowness) of the control (T-0) and all the treatments changed slightly at the initial stage of storage, however the elapse of time accelerated the changes. The total bacterial counts of T-0 showed $5.37{\times}10^7\;CFU/g$ at the initial stage, but the MG-treatments decreased the bacteria above 4 log compared to T-0. It was showed that the additives were effective for inhibition of the growth of microorganism. Sensory properties of flavor intensity test showed no significant difference between T-0 and MG-treatments (p < 0.05). The result of volatile flavor contents of electronic nose analyzer (ENZ) showed that MG-treatments (T-I, T-II, T-III) was recognized stronger than non-treatment at the initial stage, but the change of flavor compound were stabilized soon regardless of type or quantity of additives during total storage period at $30^{\circ}C$.

본 연구에서는 식초와 주정 및 아스코르빈산의 첨가량을 달리하여 제조한 생강다대기 (MG)를 $30^{\circ}C$에서 저장하면서 첨가물이 저장 중 품질특성에 미치는 영향을 살펴보았다. 생강다대기의 저장 중 색도의 경우 T-I 처리구 색도값이 다른 첨가구와 비교하여 높은 값을 보여주었고, 총 색차인 ${\Delta}E$는 T-III 처리구에서 저장 28일 경과 후에도 색도 변화가 가장 적은 것으로 나타났다. 생강다대기의 일반세균수를 측정한 결과, 저장 초기 무첨가구(T-0)에서 일반세균수가 $5.37{\times}10^7\;CFU/g$ 이었으나, MG-처리구의 초기 일반세균수가 T-0와 비교하여 4 log 이상 감소하는 경향을 보였다. 이는 저장기간 중 미생물의 증식없이 초기 일반세균수를 유지하는 경향을 보여 첨가물의 미생물 증식억제 효과를 확인할 수 있었다. 생강다대기의 관능평가를 실시한 결과, T-0와 MG-처리구간의 향기에 대한 강도 평가에 있어서 유의적인 차이를 보이지 않았다(p < 0.05). 전자코 분석장치에 의한 생강다대기의 향기성분 분석 결과, 초기치 생강다대기 향은 T-0에 비하여 T-I, T-II, T-III 처리구의 향기가 좀 더 강하게 인지되었으나, 저장 중 향기성분의 변화는 첨가물의 종류나 첨가량에 관계없이 저장온도 $30^{\circ}C$에서도 안정적으로 유지되는 것으로 나타났다.

Keywords

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