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http://dx.doi.org/10.7585/kjps.2015.19.2.88

Stability of Representative Active Compounds on Commercial Biopesticides Based on Neem or Sophora flavescens Extract Under Controlled Temperature  

Kim, Jin Hyo (Chemical Safety Division, National Academy of Agricultural Science, RDA)
Choi, Geun-Hyoung (Chemical Safety Division, National Academy of Agricultural Science, RDA)
Kang, Jae-Eun (Accident Prevention and Assessment Division, National Institute of Chemical Safety)
Park, Byung-Jun (Chemical Safety Division, National Academy of Agricultural Science, RDA)
Publication Information
The Korean Journal of Pesticide Science / v.19, no.2, 2015 , pp. 88-92 More about this Journal
Abstract
This study investigated the thermal stabilities of the four limonoidal active compounds like azadirachtin A, azadirachtin B, deacetylsalannin and salannin and of the two alkaloidal active compounds like matrine and oxymatrine in commercial biopesticides at incubated conditions ($30^{\circ}C$, $35^{\circ}C$, $40^{\circ}C$, $45^{\circ}C$, and $54^{\circ}C$). Half-lives of the limonoidal compounds in biopesticide ranged from 25.6 to 220 days. And the total limonoid contents changed over 15% after 14 days at all the conditions in the tested biopesticide containing neem extract. On the contrary, half-lives of the alkaloidal compounds in biopesticide showed the ranges from 231 to 346 days. And total alkaloidal compounds in all the tested biopesticides containing Sophora flavescens extracts decomposed below 15% after 14 days incubation at $54^{\circ}C$.
Keywords
neem; Sophora flavescens; biopesticide; thermal stability;
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Times Cited By KSCI : 4  (Citation Analysis)
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