Horticultural Science & Technology (원예과학기술지)

Korean Society of Horticultural Science (한국원예학회)
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Effect of 1-Methylcyclopropene (1-MCP) Treatment on the Quality Characteristics and Pigmentation of Tomato Fruit (Lycopersicon Esculentum Mill.)

1-Methylcyclopropane 처리가 토마토 선도유지 효과 및 색소 변화에 미치는 영향

  • Lee, Youn-Suk (Packaging Department, Yonsei University) ;
  • Chung, Dae-Sung (National Institute of Horticultural & Herbal Science) ;
  • Harte, Bruce R. (School of Packaging, Michigan State University) ;
  • Shin, Joong-Min (Packaging Department, University of Wisconsin-Stout)
  • Received : 2010.01.16
  • Accepted : 2010.05.10
  • Published : 2010.08.31
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Abstract

The quality attributes of tomato fruit ($Lycopersicon$ $Esculentum$ Mill.) to treatments with 1-methylcyclopropene (1-MCP) were studied. Harvested tomato fruit was treated one time at the initiation of storage or once-a-day during storage with $1{\mu}L/L$ 1-MCP at different storage temperatures, 12, 17, and $23^{\circ}C$. The results showed that both lower temperature and duration of 1-MCP treatment played an important role in ripening of tomato fruit. The once-a-day 1-MCP treatment was presented to be very effective in delaying quality changes of tomato fruit. The amount of chlorophyll and lycopene were measured to assess the impact of 1-MCP and temperature treatments on ripening, using a specific extinction coefficient absorbance technique. Storing tomato fruit at $12^{\circ}C$ resulted in a longer ripening period (color change) than tomato fruit stored at $17^{\circ}C$ and $23^{\circ}C$. 1-MCP treatment was very effective in retarding chlorophyll degradation and lycopene formation in the pericarp tissue of the tomato fruit at the different storage temperatures. The 1-MCP treatments affected the total chlorophyll content in different fruit tissues of the pericarp and placenta. Exposure of tomato fruit to 1-MCP gas at $12^{\circ}C$, using the once-a-day treatment, was highly effective in delaying pigment and color change.

토마토 에틸렌 발생 억제제인 1-Methylcyclopropane(1-MCP) 처리 방법 및 저장 온도에 따른 토마토의 선도 유지 그리고 토마토 과색의 주요 성분인 엽록소 및 라이코펜 함량 변화에 미치는 영향을 조사하였다. 수확한 토마토는 무처리 그리고 $1.0{\mu}L/L$ 1-MCP를 사용하여 20시간 한번 처리 또는 매일 한 번씩 지속 처리를 통하여 각각 12, 17, $23^{\circ}C$에 저장하여 토마토의 색소 성분의 변화와 품질변화를 관찰하였다. 토마토 외피 색변화, 에틸렌 발생, 그리고 경도는 저장 온도가 높을수록 1-MCP 처리에 대한 품질변화 지연효과가 두드러짐을 확인할 수 있었으며 중량감모율은 저장 기간 동안 1-MCP처리 유무와 관계없이 서서히 증가하였으며, 저장온도가 높음에 따라 증가하는 차이를 보였다. 엽록소 및 라이코펜 함량 변화는 a specific extinction coefficient absorbance를 사용하여 관찰하였으며 각 저장 온도별 1-MCP 처리구가 엽록소 손실 및 라이코펜 형성에 지연에 매우 효과적이었다. 더욱이 매일 지속적인 1-MCP 처리구는 초기 한번 1-MCP 전처리구 보다 두드러진 숙도 변화가 낮아짐을 보여 주었으며 과피별로 pericarp 부분이 placenta 부분 보다 1-MCP 처리에 더 효과적인 것으로 나타내었다. 이는 표피를 접하고 있는 외부 환경 1-MCP 물질이 pericarp 부분에 sorption을 통해 직접적인 영향을 주었으리라 판단된다. 실험 결과 저온 온도에서 적정한 농도의 1-MCP를 매일 처리한 토마토의 품질 유지 및 색소 성분 변화에 중요한 역할을 하는 것으로 나타났다.

Keywords

References

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