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이산화탄소 및 에탄올과 1-MCP 혼용처리에 의한‘갑주백목’ 감의 탈삽 및 연화억제

Deastringency and Delay Softening of ‘Hachiya’ Persimmon Treated by Combination of CO2, Ethanol, and 1-MCP

이용재|정다윤
농업생명과학연구원 (Institute of Agriculture & Life Science, Gyeongsang National University)|2023|농업생명과학연구 (Journal of Agriculture & Life Science)|제57권 제4호|pp. 1-7

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참고문헌

키워드

Tannin떫은감과실 경도유통 수명타닌탈삽Astringent persimmonDeastringencyFruit firmnessShelf life

초록

‘갑주백목’ (Diospyros kaki Thunb cv. Hachiya) 감은 현재 홍시 또는 건시로만 식용되고 있는데 탈삽된 생과로서의 활용이 기대된다. CO2및 ethanol 탈삽 처리와 동시에 1-methylcyclopropene (1-MCP)를 처리하여 탈삽과 연화억제에 대한 효과를 보고자 본 연구를 수행하였다. CO2탈삽은 20L 아크릴 용기를 이용하여 95% CO2를 24시간, ethanol 탈삽은 PE 필름(85.0cm×63.5cm)을 이용하여 99.9% ethanol 20ml를 3일간상온(23℃)에서 처리하였다. 1-MCP는 탈삽 처리와 동시에 1μL･L-1을 처리하였다. 탈삽 처리 후 상온 모의유통과 3주 저온저장 후 상온 모의유통의두 가지 조건에서 과실의 품질을 조사하였다. CO2는 처리 종료 후 2일에 ethanol은 5일에 식용이 가능한 상태로 탈삽 되었으며 탈삽이 완료되지않은 과실은 3주간의 저온 저장에서 완전히 탈삽되었다. 1-MCP는 탈삽속도에는 큰 영향을 미치지 않았으며 CO2와 ethanol 탈삽 모두에서 우수한연화억제 효과를 나타내었다. 특히, 3주 저온 저장 후 상온 유통에서 1-MCP의 연화억제 효과는 더욱 크게 나타났다. 이상의 결과로 볼 때 1-MCP는감의 탈삽에 있어 별도의 처리시간을 필요로 하지 않는 효과적인 연화억제 수단으로 판단되며, 이러한 ‘갑주백목’ 탈삽 생과는 향후 국내 유통및 해외 수출이 기대된다.

Abstract

The deastringency of ‘Hachiya’ persimmon (Diospyros kaki Thunb.), which has been used as processed, was expected because thetreatment enabled us to market the persimmon as fresh fruit. In the present work, 1-methylcyclopropene (1-MCP) was simultaneouslytreated to suppress fruit softening with CO2 or ethanol treatment to remove astringency. CO2 and ethanol deastringency was carriedout in a closed 20 L acrylic container with 95% CO2 for 24 hours and in a PE film bag (85.0 × 63.5 cm) with 99.9% ethanol for3 days at 23℃, respectively, and 1-MCP was simultaneously treated at 1 μL･L-1 concentration. Changes in the fruit quality pretreatedby CO2 or ethanol were evaluated during the simulated marketing period at room temperature (23℃) directly or after 3-week cold storageat -1.3℃ after treatment. Astringency was removed in two days in the case of CO2 treatment and five days in the case of ethanoltreatment, and the remaining astringency was removed entirely during the 3-week cold storage. 1-MCP showed excellent performancein suppressing softening with CO2 and ethanol deastringency and did not interfere with the deastringency. The performance of 1-MCPwas more effective for the simulated marketing period at room temperature after 3-week cold storage than the simulated marketing period at room temperature immediately after astringency treatment.

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