<![CDATA[Edamame (Glycine max (L) Merr.) is a type of legume with larger seeds, a sweeter taste, a softer texture, and high protein content. Edamame is a potential plant to be developed, to keep up with market demand, a role is needed an intensive one. One form of treatment for edamame is the application of pesticides thyophanate methyl fertilizer to plants. Nevertheless, excessive use of pesticides in edamame can leave pesticide residues. One of the efforts to reduce pesticide residues is washing with ozonated water and LC-MS analysis. The research decleaned the pesticide residue on edamame using ozonated water. Research methods were carried out using experimental design, with laboratory observations. The research material was edamame from Gading Mas Company and Farmers. The results showed that ozonated water can reduce thyophanate methyl pesticide residues on edamame based on the data LC-MS analysis i.e undetectable residue on the sample edamame with control treatment except only on edamame of Ivory Mas part of the peel. While the edamame sample from Gading Mas with treatment (pesticides and ozone pesticides) LC-MS analysis resulted prove to occur reduction of pesticide residues after washing using ozonated water technology by 10 ppm for 30 minutes, a decrease occurs in edamame the skin share by 81%, 58% in the edamame part of the seed, and 66%. Keywords: edamame, LC-MS analysis, pesticide, ozon]]>
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