The efficiencies of various washing agents for removing residual pesticide content in Chinese-kale

Abstract

        This research aimed to study and apply local wisdom of Nakornchum residents Ampermuaeng Kamphaeng Phet Province, for washing vegetables and fruits by interviewing the sampling group from local expert in those areas. It was found that washing entero methods from the intellect were salt, alum, baking powder, vinegar, potassium permanganate and water from soaking rice water. These washing methods were used to treat Chinese-kale for decreasing methomyl content. Each of washing solution was subsequently compared based on the efficient reduction of methomyl content. Washing condition for Chinese-kale using 0.01% potassium permanganate showed the most reduction of methomyl content at 65.67%. This was found to be significantly different (p<0.05) from other method. The reduction of methomyl content was in the range of 17.97-65.67%.