Why does DBP keep appearing in edible oil contamination reports?

Why does DBP keep appearing in edible oil contamination reports?
DBP is fat-soluble and migrates readily from plastic packaging into oils, which is why it repeatedly surfaces in Chinese edible oil risk monitoring rather than as an acute safety issue. The regulatory ceiling is 0.3 mg/kg, equivalent to 0.3 grams per tonne of oil. Survey work has found problem rates as high as roughly one third of sampled batches in some regional camellia and rapeseed oil studies, with unrefined small-workshop product worst affected. Authorities have tightened monitoring of oils and fats as a priority category, and multiple producers have faced recalls or penalties. For processors, routine DBP testing is now a compliance necessity, not a quality nicety.