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수확 전・후 1-MCP처리가 ‘후지’ 사과의 저온저장 중 과실품질에 미치는 영향open accessEffect of Preharvest and Postharvest 1-Methylcyclopropene (1-MCP) Treatments on Fruit Quality Attributes in Cold-stored 'Fuji' Apples

Authors
Yoo, JingiKang, Bong KookLee, JinwookKim, Dae HyunLee, Dong HoonJung, Hee-YoungChoi, DongGeunChoung, Myoung-GunChoi, In MyungKang, In-Kyu
Issue Date
Aug-2015
Publisher
KOREAN SOC HORTICULTURAL SCIENCE
Keywords
경도; Harvista (TM); 내생에틸렌 발생량; SmartFresh (TM); 산 함량; firmness; Harvista (TM); internal ethylene concentration; SmartFresh (TM); titratable acidity
Citation
KOREAN JOURNAL OF HORTICULTURAL SCIENCE & TECHNOLOGY, v.33, no.4, pp 542 - 549
Pages
8
Journal Title
KOREAN JOURNAL OF HORTICULTURAL SCIENCE & TECHNOLOGY
Volume
33
Number
4
Start Page
542
End Page
549
URI
https://scholarworks.bwise.kr/cau/handle/2019.sw.cau/68048
DOI
10.7235/hort.2015.15057
ISSN
1226-8763
2465-8588
Abstract
본 연구는 수확 전 수체살포용 1-MCP(HarvistaTM)와 수확 후 훈증용 1-MCP(SmartFreshTM) 처리가 ‘후지’ 사과의 품질과 저장성에 미치는 영향을 구명하고자 실시하였다. HarvistaTM 처리는 수확 1, 2, 3주전 0, 95, 125, 250 mg・L-1 농도로 각각 처리하였으며, SmartFreshTM 처리는 수확 1일 후 밀폐된 공간에서 1μL・L-1의 농도로 18시간동안 처리하였다. 과실저장은 0 ± 1°C 조건에서 180일간 저장하였다. HarvistaTM 처리에 따른 수확 시 과실품질을 보면 과중, 과피 적색도, 내생에틸렌 발생량, 경도, 산 및 가용성 고형물 함량은 무처리구와 차이가 없었다. 저온저장동안 ‘후지’ 사과의 품질변화를 보면 HarvistaTM를 250mg・L-1의 농도로 2, 3주전에 처리한 과실이 무처리구에 비하여 과실 경도 및 산 함량이 더 높게 유지되었으며, 내생에틸렌 발생량도 무처리구에 비하여 5.5-10.0% 수준으로 현저히 낮았다. 그리고 저장기간 중 가용성고형물 함량은 차이를 보이지 않았다. HarvistaTM 단독처리와 HarvistaTM + SmartFreshTM 혼용처리구는 경도, 산 함량, 내생에틸렌 발생량 모두 저장 180일 후에도 수확 시와 큰 차이를 보이지 않아 과실품질이 유지되었다. 요인간 상관분석은 HarvistaTM 처리시 처리농도와 무관하게 내생에틸렌 발생량이 경도 또는 산 함량과 부의 상관관계를 나타냈다. 그리고 HarvistaTM + SmartFreshTM 혼용처리 시 HarvistaTM 250mg・L-1와 SmartFreshTM 처리가 변수간 정의 상관관계를 나타내었다. 따라서, 수확후 SmartFreshTM처리에 의한 과실품질유지 효과와 함께, 고농도의 HarvistaTM처리 또한 저온저장 중 과실품질 유지에도 큰 효과를 보였다.
This work was carried out to evaluate the effects of preharvest 1-methylcyclopropene (1-MCP, Harvista (TM)) and postharvest 1-MCP (SmartFresh (TM)) treatments on the fruit quality attributes of cold-stored 'Fuji' (Malus domestica Borkh.) apples. Fruits were exposed to 0, 95, 125, or 250 mg.L-1 Harvista (TM) at 3, 2, 1 weeks before harvest (WBH), and treated with 0 or 1 mu L.L-1 SmartFresh (TM) at harvest. Fruit was then stored for up to 180 days at 0 +/- 1 degrees C. Fruit fresh weight, Hunter's value a, internal ethylene concentration (IEC), flesh firmness, titratable acidity (TA), and soluble solids content (SSC) in fruit treated with Harvista (TM) were not different from those of control fruit at harvest. During cold storage, flesh firmness and TA were higher in fruit treated with 250 mg.L-1 Harvista (TM) at 2 and 3 WBH than in control fruit. IEC was 5.5-10.0% lower in fruit treated with 250 mg.L-1 Harvista (TM) at 2 and 3 WBH compared with control fruit as storage duration progressed, while SSC was not affected. Furthermore, flesh firmness, TA, and IEC were affected neither by Harvista (TM) nor Harvista (TM) + SmartFresh (TM) treatments, compared with those fruit quality attributes at harvest. The correlation maps indicated that IEC was negatively correlated with firmness and TA, regardless of Harvista (TM) application levels. In addition, positive correlations between fruit quality attributes were detected in treatments with 250 mg.L-1 Harvista (TM) + SmartFresh (TM). Therefore, the results suggest that with a single application of SmartFresh (TM), a higher level of Harvista (TM) application would help in retention of fruit quality attributes during cold storage.
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