青花菜中達馬松及加保扶於冷凍加工之消減   全文下載

Removal of Methamidophos and Carbofuran Residue in Broccoli during Freezing Processing

本研究以分別噴灑達馬松液劑（50%），施用量分低量組及高量組分別為0.8及1.2l/ha，及加保扶粒劑（3%），施用量亦分二組40及60 kg/ha，十天後收穫之青花菜為材料，探討達馬松及加保扶在冷凍蔬菜加工過程中的殘留與消滅。清洗試驗的結果發現流水沖洗3分鐘處理的達馬松去除率高量組為44.1%低量組為32.8%，加保扶去除率高量組33.7%低量組34.3%，能初步減低清花材中農藥汙染的效果。殺菁試驗結果發現，利用95度C 3分鐘處理2%鹽水浸泡組可去除99.3-100%達馬松及95.6-96.2%加保扶，青花菜的色澤與質地及維生素丙之殘留量不變。逾五個月之凍藏後，解凍後青花菜之達馬松消滅率為50%，而加保扶幾乎未消滅。 Broccoli harvested 10 days after being sprayed with 50% methamidophos (0.8 and 1.2 l/ha) and 3% carbofuran (40 and 60 kg/ha) was used to study the extent to which pesticide residues could be removed by freezing processing. Results indicated that a 3-min washing process can remove 44.1 and 32.8% of the high and low doses of sprayed methamidophos, and 33.7 and 34.3% of the high and low doses of sprayed carbofuran, respectively. Blanching in 2% brine at 95°C for 3 min removed 99.3-100% methamidophos and 95.6-96.2% carbofuran and ensured acceptable and satisfactory broccoli quality. During five months of frozen storage, 50% of the methamidophos and almost none of the carbofuran degraded in the thawed samples."

Broccoli harvested 10 days after being sprayed with 50% methamidophos (0.8 and 1.2 l/ha) and 3% carbofuran (40 and 60 kg/ha) was used to study the extent to which pesticide residues could be removed by freezing processing. Results indicated that a 3-min washing process can remove 44.1 and 32.8% of the high and low doses of sprayed methamidophos, and 33.7 and 34.3% of the high and low doses of sprayed carbofuran, respectively. Blanching in 2% brine at 95°C for 3 min removed 99.3-100% methamidophos and 95.6-96.2% carbofuran and ensured acceptable and satisfactory broccoli quality. During five months of frozen storage, 50% of the methamidophos and almost none of the carbofuran degraded in the thawed samples.