Horticultural Science & Technology (원예과학기술지)

Korean Society of Horticultural Science (한국원예학회)
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Increase of Strawberry Fruit Shelf-life through Preharvest Spray of Calcium-chitosan and Post-harvest Treatment with High Pressure CO2

수확 전후 칼슘-키토산 및 고농도 CO2 단기처리에 의한 '설향' 딸기 과실의 저장성 증진

  • Ahn, Sun-Eun (Department of Horticultural Science, College of Agriculture and Life Sciences, Chungnam National University) ;
  • Lee, Ah-Youn (Department of Horticultural Science, College of Agriculture and Life Sciences, Chungnam National University) ;
  • Wang, Mao-Hua (Department of Horticultural Science, College of Agriculture and Life Sciences, Chungnam National University) ;
  • Hwang, Yong-Soo (Department of Horticultural Science, College of Agriculture and Life Sciences, Chungnam National University)
  • 안선은 (충남대학교 농업생명과학대학 원예학과) ;
  • 이아연 (충남대학교 농업생명과학대학 원예학과) ;
  • 왕무화 (충남대학교 농업생명과학대학 원예학과) ;
  • 황용수 (충남대학교 농업생명과학대학 원예학과)
  • Received : 2014.01.10
  • Accepted : 2014.04.29
  • Published : 2014.10.31
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Abstract

This experiment examined the effects of preharvest Ca-chitosan spraying and short-term post-harvest treatment with high $pCO_2$ on the shelf-life of 'Seolhyang' strawberry fruit. Fruit firmness decreased when harvested late in the season and was little affected by Ca-chitosan spray treatments. Short-term treatment with high $pCO_2$ after harvest, however, significantly increased fruit firmness regardless of preharvest treatment. The combined treatment of Ca-chitosan spray and high $pCO_2$ led to an additional increase in shelf-life through delay of skin disorder, fruit decay incidence and firmness loss during simulated marketing. The residual effects of both treatments, however, were reduced when fruit were harvested late in the season. Fruit firmness was more affected by high $pCO_2$ treatment whereas decay and visual quality were affected by preharvest spraying with Ca-chitosan. Although more research is required to determine the optimum concentration of calcium and chitosan, and the optimal spray interval, our results show that the combined treatment of preharvest Ca-chitosan spray and postharvest high $pCO_2$ is effective in improving strawberry fruit shelf-life by increasing firmness and delaying decay.

수확 전후 키토산 및 $CO_2$ 단기처리가 '설향' 딸기 과실의 저장성과 품질에 미치는 영향을 조사하기 위하여 본 실험을 수행하였다. 과실 경도는 수확 시기가 늦어질수록 감소하였고 수확 전 칼슘-키토산 누적 처리는 수확 당시의 과실 경도를 유의하게 증가시키지 못하였다. 그러나 수확 전 키토산 처리와 수확 후 100% $CO_2$ 단기처리를 병행하였을 때 저장 중 경도 유지와 과피 무름 및 부패를 억제하였다. 수확 전 키토산 살포는 과실의 무름 장해 및 부패 발생 억제에 효과적이나 수확 시기가 늦어질수록 칼슘-키토산의 수확 전 처리 효과가 감소하였다. 결론적으로 수확 전 칼슘-키토산과 수확 후 $CO_2$의 병행 처리는 딸기 과실의 경도 증가는 물론 과피 색의 변화 및 부패를 억제시키므로 딸기의 저장성 증진을 위한 수확 후 처리기술로 유용하였다.

Keywords

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