Is Washing Vegetables In The Dishwasher Actually Dangerous? - Tasting Table
Briefly

Many dishwasher detergents are highly alkaline, with the potential to irritate or burn your digestive tract. It could make food contamination even worse if used.
If there are harmful microbes on the produce, washing them in a dishwasher risks spreading them throughout, creating a humid environment for bacteria to grow.
The best way to safely wash produce is to rinse under running water, moving them around to remove contaminants rather than using the dishwasher.
Following the FDA's food safety guidelines is crucial, starting at the store by bagging produce separately from animal products to reduce food-borne illness risks.
Read at Tasting Table
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