{"id":157486,"date":"2026-07-26T07:20:27","date_gmt":"2026-07-26T14:20:27","guid":{"rendered":"https:\/\/www.lankaweb.com\/news\/items\/?p=157486"},"modified":"2026-07-26T07:20:27","modified_gmt":"2026-07-26T14:20:27","slug":"how-to-effectively-remove-pesticide-residues-from-vegetables-at-home","status":"publish","type":"post","link":"https:\/\/www.lankaweb.com\/news\/items\/2026\/07\/26\/how-to-effectively-remove-pesticide-residues-from-vegetables-at-home\/","title":{"rendered":"How to Effectively Remove Pesticide Residues from Vegetables at Home"},"content":{"rendered":"

Dr Sarath Obeysekera\u00a0<\/em><\/span><\/h2>\n\n\n

AI generated advise <\/p>\n\n\n\n

<\/p>\n\n\n\n

For vegetables purchased in Sri Lanka, this is the household method I would recommend based on current research:<\/p>\n\n\n\n

1. Remove damaged or outer leaves<\/h3>\n\n\n\n

For cabbage, lettuce, gotukola, spinach, mukunuwenna, etc., discard the outer leaves first.<\/p>\n\n\n\n

2. Prepare a baking soda solution<\/h3>\n\n\n\n
    \n
  • 1 teaspoon (about 5 g) of baking soda<\/strong><\/li>\n\n\n\n
  • 2 cups (500 mL) of clean water<\/strong><\/li>\n\n\n\n
  • Scale up as needed (e.g. 4 teaspoons in 2 litres of water).<\/li>\n<\/ul>\n\n\n\n

    3. Soak<\/h3>\n\n\n\n
      \n
    • Soak vegetables for 10\u201315 minutes<\/strong>.<\/li>\n\n\n\n
    • Gently move them around during soaking.<\/li>\n\n\n\n
    • Research shows baking soda solutions generally remove more surface pesticide residue than plain water alone, although no method removes all residues, especially pesticides that have penetrated the produce.\u00a0<\/li>\n<\/ul>\n\n\n\n

      4. Rinse thoroughly<\/h3>\n\n\n\n
        \n
      • Rinse under running filtered water<\/strong> for 30\u201360 seconds while rubbing the surface gently.<\/li>\n<\/ul>\n\n\n\n

        5. Dry<\/h3>\n\n\n\n
          \n
        • Allow to drain or pat dry with a clean towel before storing or cooking.<\/li>\n<\/ul>\n\n\n\n

          For different vegetables<\/h3>\n\n\n\n
            \n
          • Leafy vegetables:<\/strong> Separate the leaves before soaking.<\/li>\n\n\n\n
          • Tomatoes, cucumbers, brinjal:<\/strong> Rub gently while rinsing.<\/li>\n\n\n\n
          • Carrots, radish, potatoes:<\/strong> Use a clean vegetable brush under running water.<\/li>\n\n\n\n
          • Apples, grapes:<\/strong> The same baking soda method works well.<\/li>\n<\/ul>\n\n\n\n

            Avoid<\/h3>\n\n\n\n
              \n
            • Soap or dishwashing liquid (these can leave residues that are not intended for consumption).<\/li>\n\n\n\n
            • \u00a0Strong bleach or disinfectants.<\/li>\n\n\n\n
            • \u00a0Assuming alkaline water (pH 9) alone is enough to remove pesticides. Current evidence does not support a meaningful advantage from alkaline water by itself over clean water; the main benefit comes from thorough washing, and baking soda can improve removal of some surface residues.\u00a0<\/li>\n<\/ul>\n\n\n\n

              Given the level of pesticide use on some vegetables in Sri Lanka, I also recommend:<\/p>\n\n\n\n

                \n
              • Buy seasonal produce whenever possible.<\/li>\n\n\n\n
              • Peel vegetables such as cucumbers, carrots, and potatoes if you are particularly concerned about residues.<\/li>\n\n\n\n
              • Cook vegetables thoroughly when appropriate, as cooking can further reduce residues of some pesticides.\u00a0<\/li>\n<\/ul>\n\n\n\n

                We worry about these issues when we get older <\/p>\n\n\n\n

                My Alkaline water filter is effective to clean vegetables using water at Ph value 9<\/p>\n\n\n\n

                But Ai says otherwise <\/p>\n\n\n\n

                  \n
                • Filtered water<\/strong> is beneficial if your tap water contains chlorine, sediment, or other contaminants, but this benefit comes from the filtration<\/strong>, not from the higher pH.<\/li>\n\n\n\n
                • Alkaline water (pH 9)<\/strong> has not been shown in reliable scientific studies to remove significantly more pesticides than ordinary clean water.<\/li>\n<\/ul>\n\n\n\n


                  Dr Sarath Obeysekera<\/p>\n\n\n\n

                  <\/p>\n","protected":false},"excerpt":{"rendered":"

                  Dr Sarath Obeysekera\u00a0 AI generated advise  For vegetables purchased in Sri Lanka, this is the household method I would recommend based on current research: 1. Remove damaged or outer leaves For cabbage, lettuce, gotukola, spinach, mukunuwenna, etc., discard the outer leaves first. 2. Prepare a baking soda solution 3. Soak 4. Rinse thoroughly 5. Dry […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[116],"tags":[],"class_list":["post-157486","post","type-post","status-publish","format-standard","hentry","category-dr-sarath-obeysekera"],"_links":{"self":[{"href":"https:\/\/www.lankaweb.com\/news\/items\/wp-json\/wp\/v2\/posts\/157486","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.lankaweb.com\/news\/items\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.lankaweb.com\/news\/items\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.lankaweb.com\/news\/items\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.lankaweb.com\/news\/items\/wp-json\/wp\/v2\/comments?post=157486"}],"version-history":[{"count":1,"href":"https:\/\/www.lankaweb.com\/news\/items\/wp-json\/wp\/v2\/posts\/157486\/revisions"}],"predecessor-version":[{"id":157487,"href":"https:\/\/www.lankaweb.com\/news\/items\/wp-json\/wp\/v2\/posts\/157486\/revisions\/157487"}],"wp:attachment":[{"href":"https:\/\/www.lankaweb.com\/news\/items\/wp-json\/wp\/v2\/media?parent=157486"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.lankaweb.com\/news\/items\/wp-json\/wp\/v2\/categories?post=157486"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.lankaweb.com\/news\/items\/wp-json\/wp\/v2\/tags?post=157486"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}