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Quality Characteristics of Korean Chive (Allium tuberosum Rotter) as affected by Inner Film Packaging Methods in Paper Box

부추의 종이박스 내 속포장에 따른 품질 특성

  • Jang, Min Sun (National Institute of Horticultural & Herbal Science, Rural Development Administration) ;
  • Lee, Jung-Soo (National Institute of Horticultural & Herbal Science, Rural Development Administration) ;
  • Chandra, Dulal (National Institute of Horticultural & Herbal Science, Rural Development Administration) ;
  • Choi, Jee Won (National Institute of Horticultural & Herbal Science, Rural Development Administration) ;
  • Lee, Jin-Su (National Institute of Horticultural & Herbal Science, Rural Development Administration) ;
  • Park, Me Hea (National Institute of Horticultural & Herbal Science, Rural Development Administration) ;
  • Choi, Hyun Jinn (National Institute of Horticultural & Herbal Science, Rural Development Administration) ;
  • Hong, Yuun Pyo (National Institute of Horticultural & Herbal Science, Rural Development Administration) ;
  • Kim, Ji Gang (National Institute of Horticultural & Herbal Science, Rural Development Administration)
  • 장민선 (농진청 국립원예특작과학원) ;
  • 이정수 (농진청 국립원예특작과학원) ;
  • ;
  • 최지원 (농진청 국립원예특작과학원) ;
  • 이진수 (농진청 국립원예특작과학원) ;
  • 박미희 (농진청 국립원예특작과학원) ;
  • 최현진 (농진청 국립원예특작과학원) ;
  • 홍윤표 (농진청 국립원예특작과학원) ;
  • 김지강 (농진청 국립원예특작과학원)
  • Received : 2017.10.30
  • Accepted : 2017.12.15
  • Published : 2017.12.31

Abstract

Effects of packaging methods for maintaining the shelf-life and postharvest quality of Korean chive (Allium tuberosum Rotter) usually called buchu in Korea was studied during fall season. Buchu, which has high moisture content and active metabolism after harvest, is characterized by the greater changes in quality during storage and distribution. It is usually packaged in paper box during distribution in domestic channel in Korea where the marketability ends within few days of harvest. In order to maintain the commercial quality of buchu, we tried to use inner film with or without absorbent paper in commercial paper box packaging. The 'Greenbelt' cultivar of buchu was harvested in october and packaged in corrugated paper box (A), in corrugated paper box with micro-perforated high density polyethylene (HDPE) film as inner material (B), a layer of absorbent paper both at the bottom and top of buchu in corrugated paper box (C) and a combination of HDPE film as inner material along with a layer of absorbent paper both at the bottom and top of buchu in corrugated paper box (D), and stored at $5^{\circ}C$ for up to 21 days. Several quality parameters such as fresh weight loss, respiration rate, color, chlorophyll content and sensory qualities were monitored during storage. When buchu was packaged only in paper box, the appearance and quality deteriorated rapidly through decay development thereby sample became unmarketable within 12 days. On the other hand, buchu packaged with inner HDPE film maintained its quality, good visual appearance and exhibited a longer period of marketable life compared to the samples stored in other treatments. However, the use of absorbent paper did not have any significant effect in maintaining quality of buchu. The uses of inner HDPE film was effective in reducing weight loss that resulted better visual appearance of buchu. Results suggest that the use of inner HDPE film in bulk type corrugated paper box packaging and storing at $5^{\circ}C$ could be the optimum condition for commercial storage of buchu. Further investigation on other quality parameters and packaging methods would be useful in maintaining the quality aspects of buchu at postharvest stages.

부추는 높은 수분 함량과 활발한 수확 후 대사 작용으로 저장 유통 시 품질 변화가 큰 원예산물로 알려져 있다. 국내유통 현장은 원물로 출하하는 형태로 상온에서 종이 박스로 유통되는데, 관행의 저장 유통 상황을 가정하여 종이박스 포장에 속포장 등을 통해 품질을 유지하고자 하였다. 본 실험은 '그린벨트' 품종 부추로 10월에 수확하여 종이박스 내에 HDPE 필름으로 속포장을 하거나 흡습지를 넣어 저온($5^{\circ}C$) 저장하였다. 품질은 생체중량 및 색상변화, 외관변화 등을 관찰하였다. 부추의 종이박스 내 저온 저장에서 생체중량과 외관, 이취는 HDPE 필름으로 속포장을 한 것이 속포장을 하지 않은 것보다 변화 정도가 적은 것으로 나타났다. 저장 후 속포장에 따른 생체중량은 종이박스에 HDPE 필름으로 속포장 후 흡습지 여부에 상관없이 저장 종료 21일까지 생체중량 변화가 1% 이하였으나, 신선도와 이취에서 저장 12일까지는 속포장 한 것이 선도가 높게 유지되고 이취도 적은 것으로 나타났다. 그러나 12일 이후에는 외관변화에서 보듯이 짓무름 등으로 인해 상품가치가 하락하였다. Chlorophyll 함량, 호흡, 에틸렌 발생 등에서는 속포장 여부 등의 차이에 따라 저장성에 미치는 영향을 언급하기는 어려웠다. 속포장을 통한 개선한 포장 방법은 유통현장에서 편리하게 이용할 수 있는 방법으로 부추의 국내 유통에서 포장 시 기존의 단순 종이박스 포장보다 선도 연장 가능성을 확인하였다. 그러나 보다 선도를 보존하기 위해서는 시기별로 저장방법에 따른 개선방법에 대한 연구가 향후에 더 필요한 것으로 보인다.

Keywords

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