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2020 Vol.29, Issue 3 Preview Page

Original Articles

Changes of Qualities of Green Asparagus Packed with Different Types during Low Temperature Storage

포장 방법에 따른 아스파라거스의 저온저장 중 품질변화

Lixia Wang1
,
In-Lee Choi2
,
Ho-Min Kang3*
왕 립1
,
최 인이2
,
강 호민3*
1Graduate Student, Division of Horticulture and Systems Engineering, Program of Horticulture, Kangwon National University, Chuncheon 24341, Korea
2Post Doctor, Division of Horticulture and Systems Engineering, Program of Horticulture, Kangwon National University, Chuncheon 24341, Korea
3Professor, Division of Horticulture and Systems Engineering, Program of Horticulture, Kangwon National University, Chuncheon 24341, Korea
1강원대학교 원예시스템공학부 대학원생
2강원대학교 원예시스템공학부 박사 후 연구원
3강원대학교 원예시스템공학부 교수
*Corresponding author: hominkang@kangwon.ac.kr
31 July 2020. pp. 239-244
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Abstract

Effect of 6kg large unit with the carton box (20% open ratio) and MA box (10,000cc·m-2·day-1·atm-1 oxygen transmission rates modified atmosphere package), and the 100g small unit with MA film on asparagus sensory quality were evaluated. The CO2 concentration depended largely on the packing unit and maintained at around 3% in small MA packages, whereas in the MA box increased to 12%. Ethylene concentration rapidly increased until after 3 days of storage in MA packages and then decreased to maintain 5μL·L-1. Unrelated to the unit size, the lower weight loss was obtained in MA packages. A significant difference in visual quality was shown since the 15th day, the best and worst were the MA box and small MA package on the finish day. Off-odor was the highest in small MA packages and the lowest in the carton box (< 3.0). Although there was no significant difference in firmness among all treatments, the packages showed the highest firmness in tips and stems, respectively. The sugar content and hue angle decreased during storage, but there was no statistical difference in all treatments. EL was lowest and highest in small MA package and carton box, respectively. On the 10th day, the total aerobic bacteria was lowest in small MA packages, but no significant difference on the 20th day. E. coli was not found in all treatments on the 10th day, while it was the lowest in the MA box on the 20th day. The mold and yeast were not observed during the whole storage. Based on the above results, the carton box packaged with 10,000cc OTR film was more effective in maintaining the quality of green asparagus with the suitable CO2 concentration for asparagus cold storage.

Keywords
aerobic bacteria
firmness
modified atmosphere
shelf-life

저장 중 생체중 감소율은 MAP 처리구들은 0.5% 이하의 낮은 수치를 보였으며, 무포장 대조구의 경우 저장 종료일 3%에 육박하였으나, 아스파라거스 최대 생체중 감소 허용량보다는 낮았다. 포장 내 이산화탄소 농도는 동일한 필름을 사용하였으나 포장 단위에 따라 크게 차이를 보였는데, 소포장 MA 처리구는 3% 내외를 유지하였고 6kg 박스 MAP 처리구는 최대 12%까지 증가하였다. 포장 내 에틸렌 농도는 MA저장한 100g과 6kg 포장 모두 저장 직후 3일까지 급속히 증가하였다가 이 후 감소하여 저장 종료일까지 5μL·L-1 수준을 유지하였다. 저장 중 패널테스트로 조사한 외관상 품질은 저장 15일째부터 처리에 따른 차이가 나타나 종료일에 6kg 박스 MA처리구가 가장 양호하였고, 소포장 MA 처리구가 가장 낮았다. 이취는 소포장 MA가 가장 높았으며, 6kg박스 대조구가 가장 낮았다. 경도의 경우 처리에 따른 차이에 통계적 유의성은 나타나지 않았는데, 화두는 소포장 처리구, 줄기는 6kg 박스 MA 처리구가 가장 높았다. 저장 종료일의 전해질 용출량은 소포장 MA 처리구가 가장 낮았으며 6kg 박스 대조구가 가장 높았다. 화두와 줄기의 Hue angle은 모두 저장 기간이 길어짐에 따라 감소하는 경향을 보였으나, 처리구간의 차이가 나타나지 않았다. 저장 10일째 총 세균수는 소포장 MA 처리구가 가장 낮았으나, 종료일인 20일째에는 모든 처리구에서 유사하게 나타났다. 대장균수는 10일째 모든 처리구에서 검출되지 않았으나, 20일째에는 6kg 박스 MA 처리구가 가장 낮았으며 곰팡이는 저장기간 모든 처리구에서 관찰되지 않았다.

키워드
경도
외관상 품질
저장 기간
총 세균수
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Information
  • Publisher :The Korean Society for Bio-Environment Control
  • Publisher(Ko) :(사)한국생물환경조절학회
  • Journal Title :Protected Horticulture and Plant Factory
  • Journal Title(Ko) :시설원예ㆍ식물공장
  • Volume : 29
  • No :3
  • Pages :239-244
  • Received Date : 2020-03-09
  • Revised Date : 2020-04-29
  • Accepted Date : 2020-05-22
  • DOI :https://doi.org/10.12791/KSBEC.2020.29.3.239
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