포장재가 무순의 저장 중 품질특성에 미치는 영향

Effect of Packaging Materials on the Quality of Radish Sprout during Storage

  • Lee, Hyeon-Jeong (Department of Food Science and Technology Kyungpook National University) ;
  • Jang, Ji-Hyun (Department of Food Science and Technology Kyungpook National University) ;
  • Kwon, Joong-Ho (Department of Food Science and Technology Kyungpook National University) ;
  • Moon, Kwang-Deog (Department of Food Science and Technology Kyungpook National University)
  • 발행 : 2009.04.30

초록

무순의 포장재에 따른 저장기간 중 품질특성 변화를 알아보기 위해 PET 포장재는 통기구멍의 유무에 따라 PO 및 PC 포장재를 사용하였고, 방담OPP film은 산소투과도에 따라 LO, LM 및 LH 포장재를 이용하였다. 포장 내 가스 조성의 경우 PO 포장재에서는 비교적 높은 $O_2$ 농도와 낮은 $CO_2$ 농도를 나타내었다. 중량감소율은 PO 포장재 경우 가장 높았으며, 가용성고형분의 함량은 PO 포장재의 경우가 가장 많았으며, 저장기간에 따라 증가하는 경향을 보였다. pH의 경우 유의적으로 증가하였으며 대체로 산소투과도가 높을수록 pH의 값이 더 낮았다. b value는 LO 포장재에서 다른 포장재에 비해 높게 나타났고, 저장 7일째 LO 포장재에서 ${\Delta}E$ value가 높게 나타나 다른 포장재에 비해 색변화가 컸다. 뚜렷한 경향을 보이지 않았으나 저장기간 동안 PC과 LO 포장재의 총 페놀함량 및 전자공여능이 다른 포장재에 비해 더 높게 측정되었다. 총균수는 저장기간에 따라 증가하였으며, PC 및 LO 포장재의 미생물수가 다른 포장재에 비해 상대적으로 많았으며 관능검사 결과, 종합적 기호도에서 LM 포장재가 저장 7일까지 다른 포장재에 비해 높은 관능적 평가를 받았다.

Radish sprout was packaged with different materials. PO and PC are both hard case PET(polyethylenterephthalate) and has 6 holes and no holes, respectively. LO, LM and LH are anti-fogging OPP(oriented polypropylene) film which have different oxygen transmission rates. The oxygen concentration and weight loss rate in PO packaged were higher than any other packages. The soluble solid contents of radish sprouts packaged with PO showed much increased during storage. The pH increased during storage but pH of the samples packaged with high oxygen transmission rate was relatively low. Radish sprouts in LO had lower b value as compared to other samples. The result of ${\Delta}E$ value was generally high during storage period, especially at 7 days storage. The contents of total polyphenolic compounds and free radical scavenging activity of radish sprout packaged with PC and LO were high. Total aerobic bacteria of sprouts in PC and LO was much higher than others. The result of organoleptic qualities showed that the radish sprouts packaged with LM had a good score in terms of overall acceptability until 7 days storage.

키워드

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