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Distribution and Accumulative Pattern of Tetracyclines and Sulfonamides in Edible Vegetables of Cucumber, Tomato, and Lettuce

Mohamed Bedair M. Ahmed, Anushka Upamali Rajapaksha, Jung Eun Lim, Ngoc Thang Vu, ll Seop Kim, Ho Min Kang, Sang Soo Lee, Yong Sik Ok
Journal of agricultural and food chemistry 2015 v.63 no.2 pp. 398-405
Cucumis sativus, Lactuca sativa, Solanum lycopersicum, acceptable daily intake, adverse effects, animals, cherry tomatoes, chlortetracycline, cucumbers, environmental health, excretion, greenhouses, human health, leaves, lettuce, oxytetracycline, risk, roots, sand, seedlings, sulfadimethoxine, sulfamethoxazole, tetracycline, upland soils
Veterinary antibiotics can be released to environment by the animals’ excretions, which thereby poses human health and ecological risks. Six antibiotics (tetracycline, oxytetracycline, chlortetracycline, sulfamethazine, sulfamethoxazole, and sulfadimethoxine) at three concentrations (5, 10, and 20 mg kg–1 soil) were employed in pots filled with a loamy sand upland soil. Three types of vegetable seedlings, including cucumber (Cucumis sativus), cherry tomato (Solanum lycopersicum), and lettuce (Lactuca sativa), were also cultivated during 45 d in the greenhouse. All antibiotics taken up by tested plants showed negative effects on growth. Relatively high levels of tetracyclines and sulfonamides (SAs) were detected in the nonedible parts, roots, and leaves of cucumber and tomato, but fruit parts accumulated them lower than acceptable daily intake. Indeed, cucumber roots accumulated SAs by up to 94.6% of total addition (at 5 mg kg–1 soil).