Q & A - Are Oven Bags Safe?
bags are made with polyethylene terephthalate (PET), a type of plastic
usually considered safe to use for food and water. But, a 2007 study that
included PET roasting bags and ready-made products in PET baking dishes found
that half of the products prepared at a temperature of 356°F exceeded the
specific migration limit of chemicals set for food contact material by the
Since that study, most
research is focused on PET water bottles. The results from these studies
provide plenty of evidence that PET oven bags are not safe.
- A 2011 study found that
all types of plastic, including PET, will leach endocrine disrupters like
antimony into food and water. Antimony is also a possible carcinogen and
developmental, cardiovascular, and reproductive toxin.
- A 2015 study found two
types of phthalates, diisobutyl phthalate and dibutyl phthalate, migrated from
roasting bags to spices and roasted meat. The highest concentrations of
phthalates were found in the spices used to cook the chicken meat. Phthalates, are endocrine
disrupters linked to diabetes, infertility, obesity,
allergies and asthma.
- A 2022 review of 91 studies reported that 150 food contact chemicals have
been found to migrate from PET bottles into food and water. These include the carcinogen antimony and several types of endocrine disrupting phthalates and BPA.
- A final thing to keep in mind about the safety of oven bags
is that the more fat in food cooked or stored in PET plastic, the more plastic
chemicals migrate into food.
recommends that women don't use roasting/steaming bags because the plastic
residues may leach into food when heated in a regular or microwave oven. Bottom
line – oven bags are made of plastic. And any type of plastic will release
toxic chemicals when heated.
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