한국환경농학회지 (Korean Journal of Environmental Agriculture)

  • 제36권1호
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  • Pages.17-21
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  • 2017
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  • 1225-3537(pISSN)
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  • 2233-4173(eISSN)
한국환경농학회 (The Korean Society of Environmental Agriculture)
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피마자유와 양명아주 추출물을 원료로 하는 유기농업자재 유효성분의 열 안정성 평가

Thermal Stability of Representative Bioactive Compounds in Biopesticide Derived from Castor Oil or Wormseed Extract under Controlled Temperature

  • 최근형 (국립농업과학원 농산물안전성부 화학물질안전과) ;
  • 정동규 (국립경상대학교 농업생명과학연구원 응용생명과학부) ;
  • 진초롱 (국립농업과학원 농산물안전성부 화학물질안전과) ;
  • 노진호 (국립농업과학원 농산물안전성부 화학물질안전과) ;
  • 박병준 (국립농업과학원 농산물안전성부 화학물질안전과) ;
  • 문병철 (국립농업과학원 농산물안전성부 화학물질안전과) ;
  • 김진효 (국립농업과학원 농산물안전성부 화학물질안전과)
  • Choi, Geun-Hyoung (Chemical Safety Division, Agro-Food Safety and Crop Protection Department, National Institute of Agricultural Sciences) ;
  • Jeong, Dong-Kyu (Division of Applied Life Science, Institute of Agriculture and Life Science (IALS), Gyeongsang National University) ;
  • Jin, Cho-Long (Chemical Safety Division, Agro-Food Safety and Crop Protection Department, National Institute of Agricultural Sciences) ;
  • Rho, Jin-Ho (Chemical Safety Division, Agro-Food Safety and Crop Protection Department, National Institute of Agricultural Sciences) ;
  • Park, Byung-Jun (Chemical Safety Division, Agro-Food Safety and Crop Protection Department, National Institute of Agricultural Sciences) ;
  • Moon, Byung-Cheol (Chemical Safety Division, Agro-Food Safety and Crop Protection Department, National Institute of Agricultural Sciences) ;
  • Kim, Jin-Hyo (Chemical Safety Division, Agro-Food Safety and Crop Protection Department, National Institute of Agricultural Sciences)
  • 투고 : 2017.02.10
  • 심사 : 2017.03.24
  • 발행 : 2017.03.31
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초록

BACKGROUND: Castor oil and wormseed extract are important active ingredients for biopesticide, and ricinoleic acid in castor oil and three monoterpenes (ascaridole, carvacrol and p-cymene) in wormseed extract are known bioactive substances. However, their stabilities had not been studied, even though the stability was the core property for estimation of shelf-life of biopesticide. Aimed to investigate the thermal stabilities of the bioactive substances in castor oil and wormseed extracts. METHODS AND RESULTS: The contents of ricinoleic acid and three monoterpenes (ascaridole, carvacrol and p-cymene) were analyzed by gas chromatography (GC). The thermal stabilities of the bioactive substance were measured at $0^{\circ}C$, $23^{\circ}C$, $30^{\circ}C$, $40^{\circ}C$, $45^{\circ}C$ and $54^{\circ}C$ for 84 d. The half-lives of ricinoleic acid in biopesticides was ranged from 28.9 d to 57.8 d at $30^{\circ}C$, and the stability of pure castor oil were located in the range ($t_{1/2}$=46.2d for Indian product and 27.7 d for Korean product) at the same temperature. The half-lives of the total monoterpenes in biopesticides were ranged from 3.9 d to 27.7 d at $30^{\circ}C$. Among the monoterpenes, the stability ascaridole and p-cymene were decreased in acidic condition. All the bioactive substances showed similar stability on the different thermal conditions. CONCLUSION:The half-lives of most bioactive substance from castor oil and wormseed extracts were less than 100 d. To increase the stability of bioactive substance in biopesticide, stabilizing additives like antioxidant and oxygen remover should be considered to extend of the shelf-life.

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참고문헌

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