Nutrition expert Jenny Tschiesche recently warned citrus fruit enthusiasts about potential health risks associated with consuming the zest. Tschiesche, a renowned author, cautioned in a TikTok video to scrutinize the labels of easy peelers for any treatment chemicals. She highlighted that supermarket mandarins may contain fungicides like imazalil, 2,4-D, pyrimethanil, thiabendazole, fludioxonil, and azoxystrobin, urging people not to zest or cook the whole fruit due to these treatments.
Tschiesche emphasized that chemicals like imazalil and thiabendazole could impact the liver and endocrine system, while fludioxonil and pyrimethanil might cause irritation or metabolic effects. She also mentioned potential effects of 2,4-D on hormones and the nervous system. Although regulatory agencies set limits to keep residues below harmful levels, Tschiesche advised against using the zest or consuming the peel without thorough washing.
Responding to a question on alternatives to zest, Tschiesche recommended washing fruits thoroughly or opting for organic produce with fewer or no fungicides. She also addressed concerns about citrus fruit residues by pointing out that citrus peels tend to have higher pesticide levels, emphasizing the importance of careful handling, particularly for children.
Pesticide Action Network UK echoed similar sentiments, noting the prevalence of pesticide residues in citrus fruits and emphasizing the risk of dermal absorption when handling fruits treated with fungicides. The organization highlighted the need for caution when using citrus zest and handling pesticide-treated fruits.