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Applicability of CATIS as a Postharvest Phytosanitation Technology against the Peach Fruit Moth, Carposina sasakii Matsumura

복숭아심식나방(Carposina sasakil)의 수확 후 소독 처리로서 CATTS 기술의 적용 가능성

  • 손예림 (안동대학교 생명자원과학과) ;
  • 최경희 (농촌진흥청 국립원예특작과학원 사과시험장) ;
  • 김용 ((주)디지탈솔루션) ;
  • 김용균 (안동대학교 생명자원과학과)
  • Received : 2010.01.25
  • Accepted : 2010.02.04
  • Published : 2010.03.30

Abstract

As an environment-friendly phytosanitary measure, CATTS (controlled atmosphere temperature treatment system) has been developed to kill several quarantine insect pests infesting subtropical agricultural commodities. This study tested any possibility to apply CATTS to apples to effectively eliminate the peach fruit moth, Carposina sasakii, which has been regarded as a quarantine insect from the imported countries. When the larvae of C. sasakii were directly exposed to $46^{\circ}C$ (an installed lethal temperature of CATTS), they showed a median lethal time at 14.66 min. Addition of high carbon dioxide to the temperature treatment enhanced the thermal limit susceptibility of C. sasakii to $46^{\circ}C$. CATTS device was constructed to automatically control $CO_2$ concentration and temperature with real-time monitoring both in the chamber and in the fruit. The larvae internally infesting apples were tested using the CATTS device and showed 100% lethality after 60 min exposure to a treatment of $46^{\circ}C$ under 15% $CO_2$ in the chamber. Relatively long exposure may be due to the deviation between the ramping temperature ($0.35^{\circ}C$/min) of the chamber and the ramping temperature (0.12-$0.23^{\circ}C$/min) inside apple fruit, where the tested larvae were located. This study suggests a possibility that CATTS can be applied as a quarantine measure to kill the larvae of C. sasakii locating inside the apples.

아열대성 작물을 대상으로 피해를 주는 해충에 대해서 친환경 소독 기술로서 환경조절열처리(CATTS: controlled atmosphere temperature treatment system) 기술이 개발되었다. 본 연구는 국내 사과를 일부 외국으로 수출할 경우 검역대상으로 지목받고 있는 복숭아심식나방(Carposina sasakii)에 CATTS 기술을 적용할 수 있는 지에 대한 가능성을 알아보기 위해 시도되었다. 노출된 복숭아심식나방은 $46^{\circ}C$의 CATTS 치사 설정온도에서 반수치사노출시간이 14.66 분으로 나타났다. 여기에 높은 농도의 이산화탄소 노출은 $46^{\circ}C$에 대한 복숭아심식나방의 감수성을 현격하게 높였다. 다음으로 수확 후 사과 내부에서 가해하는 복숭아심식나방을 대상으로 본 연구에서 제조된 CATTS 장치로 소독효과를 분석하였다. 본 연구용 CATTS 장비는 이산화탄소와 온도를 자동으로 조절하며 처리 기간 동안 기기 내부 및 과실 내부 온도를 실시간으로 모니터링 하도록 제작되었다. 이산화탄소가 15%룰 유지하면서 기기의 내부온도가 $46^{\circ}C$에 도달한 후 60분 경과하였을 때 100%의 나타냈다. 이러한 비교적 장기간 고온 노출은 기기 내부 온도 증가($0.35^{\circ}C$/min)에 비해 대상 곤충이 위치한 과실 내부(0.12-$0.23^{\circ}C$/min)가 현격하게 느리게 처리 온도에 도달하여 이들 사이에 나타나는 온도 편차에 기인된 것으로 나타났다. 본 연구는 사과를 가해하는 복숭아심식나방에 대한 수확 후 소독 기술로서 CATTS의 응용 가능성을 제시한다.

Keywords

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