| Summary: | 碩士 === 國立臺灣大學 === 園藝學研究所 === 87 === Fresh cabbage was fermented 18 days or 5 days after immersed carbofuran、vinclozolin、chlorpyrifos and permethrin 1000 or 1500 dilution, were extracted with acetonitrile, cleaned up with Florisil cartridge. Four pesticides were determined by HPLC between uv 230nm~330nm, simultaneously. Results indicated that the 5th pesticide residues of 5 days fermentation and the 18th pesticide residues of 18 days fermentation were 37.1~61.4﹪、33.2~75.9﹪, respectively. The maximums of PCA culture were log 11.7 and log 7.2, respectively.
The experiments were studied on pesticide degradation by microorganisms of cabbage in different sugar concentration, different temperature and different inoculation. Results found that suitable concentration of sugar could help the growth of lactobacillus, and the four pesticide residues in 3﹪sugar fortification, 37℃ incubation and 0.5﹪inoculation were 14.2~76.7﹪,1.3~91.2﹪and 52.4~89.4﹪, respectively.
The total results indicated that carbofuran、vinclozolin、chlorpyrifos and permethrin were degraded acceleratively by microorganism onto cabbage. Sugar concentration and incubation temperature all could effect species of microorganism growth. Therefore, the degradation on various pesticides showed in different rates .
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