Horticultural Science & Technology (원예과학기술지)

Korean Society of Horticultural Science (한국원예학회)
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Comparison of the Quality of Highland-Grown Kimchi Cabbage 'Choon Gwang' during Cold Storage after Pretreatments

수확 후 전처리에 의한 고랭지 배추 '춘광' 품종의 저온 저장 중 품질 변화에 대한 비교

  • Bae, Sang Jun (Department of Plant Science, Gangneung-Wonju National University) ;
  • Eum, Hyang Lan (NICEM Pyeongchang branch institute, Green Bio Science & Technology, Seoul National University) ;
  • Kim, Byung-Sup (Department of Plant Science, Gangneung-Wonju National University) ;
  • Yoon, Jungro (Department of Food Processing and Distribution, Gangneung-Wonju National University) ;
  • Hong, Sae Jin (Department of Plant Science, Gangneung-Wonju National University)
  • 배상준 (강릉원주대학교 식물생명과학과) ;
  • 엄향란 (서울대학교 그린바이오과학기술연구원 나이셈 평창분원) ;
  • 김병섭 (강릉원주대학교 식물생명과학과) ;
  • 윤정로 (강릉원주대학교 식품가공유통학과) ;
  • 홍세진 (강릉원주대학교 식물생명과학과)
  • Received : 2014.03.19
  • Accepted : 2014.12.03
  • Published : 2015.04.30
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Abstract

Kimchi cabbage 'Choon Gwang' cultivar that was grown in highlands in Gangneung was subjected to predrying, room cooling, and forced air cooling, and then packed with/without 0.02 mm HDPE film to investigate the effect of postharvest treatment on quality characteristics during 8 weeks storage at $2^{\circ}C$ (RH $90{\pm}5%$). Weight loss in forced air cooling and room cooling was lower than 3-4% with 0.02 mm HDPE film liner treatment during storage. However, it was only below 10% in room cooling without liner treatment and forced air cooling without liner treatment led to the highest weight loss, above 15%. Conversely, the control had lower weight loss than the others. SSC was $2-4^{\circ}brix$ for all treatments and there was no difference between postharvest treatments and liner treatments. Color index and firmness both showed no differences with/without 0.02 mm HDPE film and postharvest treatments. In sensory evaluation, forced air cooling with liner treatment was effective, with the highest score, especially in appearance and crispness. After 6 weeks, control kimchi cabbage without liner treatment was damaged seriously in appearance and the internal color had changed to brown. Room cooling and predrying with liner treatment changed the start of internal browning to after 8 weeks storage.

강원도 강릉에 위치한 고랭지 지역에서 재배된 배추 '춘광' 품종은 수확 직후 차압식예냉, 통풍식예냉, 예건 처리를 하였고, 전처리 후 각각 처리에 대해 0.02mm HDPE film으로 liner 처리 유무에 따라 분류한 다음 $2^{\circ}C$에 저장을 하면서 품질 조사를 실시하였다. 저장 중 무게 손실은 liner 처리구에서 차압예냉이 3% 미만의 손실률을 보였고, 통풍예냉 또한 4% 미만의 손실률을 보였다. 그러나 liner 무처리 구에서는 통풍예냉이 10% 미만의 손실률을 보였고, 차압예냉의 경우 15% 이상으로 가장 많은 손실률을 보였으며, 오히려 대조구가 손실률이 가장 적었다. 가용성고형물의 경우 $2-4^{\circ}brix$ 정도로 나타났으며, 색도는 CIE $L^*$ 값은 50 내외로 큰 차이를 보이지 않았고, hue angle 값은 조금씩 감소하였으나 $120{\pm}2^{\circ}C$ 사이 녹색의 범위 안에 분포하여 색의 변화에 대한 차이는 없었다. Chroma 값의 경우에도 28-32 사이에 분포하였다. 경도는 22N 정도로 나타났으며, 처리에 따른 유의적 차이는 보이지 않았다. 관능 평과 결과, 외관과 아삭거림 정도의 경우 차압예냉을 실시한 후 liner를 적용한 배추에서 가장 좋은 결과가 나타났으며, 나머지 항목에서는 유의적 차이가 없었다. 저장 6주 경과 후 liner 무처리구에서 외관이 많이 손상되었고, 7주 경과 후 liner 처리구에서 통풍예냉과 예건에서 내부 갈변이 심하게 발생하였다.

Keywords

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