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chemical analytics

June 27, 2024

Recent studies explore the presence and migration of diverse synthetic antioxidants in Chinese food contact materials (FCMs); both phosphite antioxidants and synthetic phenolic antioxidants are commonly found; typically, FCMs contain several mg of synthetic antioxidants per kg FCM and may be the primary source of exposure to synthetic antioxidants; some commonly found antioxidants are suspected endocrine disruptors
Reading time: 4 minutes

November 23, 2023

119 plastic samples including polyethylene (PE), polypropylene (PP), polystyrene (PS), and polyethylene terephthalate (PET) tested for mutagenicity; no DNA-reactive, mutagenic substances in PET but in 51 of the other samples, making them unsafe, especially for food contact applications; recycling process identified as source; dataset of over 600 organic chemicals in recycled high-density PE pellets published
Reading time: 4 minutes

August 10, 2023

Scientists find cyclic polyethylene terephthalate (PET) oligomers migrate into fatty food simulants but not olive oil; levels higher from recycled compared to virgin PET; comprehensive extraction and migration experiments of Tritan™ products find oligomer migration from bottles of no toxicological concern but microwaveable containers were non-suitable for food heating
Reading time: 4 minutes

August 4, 2023

Studies analyze biodegradable – including compostable – plastics for their in vitro toxicity and chemical composition; comparison with conventional plastics indicates higher toxicity of compostables which further increases with photodegradation and composting; detect brominated flame retardants in “biodegradable”-labeled food packaging
Reading time: 3 minutes

July 4, 2023

Two groups of scientists analyze occurrence and migration of organophosphate esters (OPEs) from hundreds of Chinese plastic and paper food packaging; one study reports higher concentration of OPEs in plastics and migration of 15 out of 23 targeted OPEs; another study identifies presence of 42 and migration of 26 OPEs and identifies seven new compounds
Reading time: 4 minutes

March 13, 2023

Scientists perform target and non-target screening of recycled plastics and provide recommendations on methods; detect >280 organic chemicals and metals in 21 plastic flakes and pellets used in recycling; analyze several recycled polymers and find polyethylene terephthalate (PET) the only one currently complying with European circular economy requirements; compare analytical methods to assess the chemical composition of recyclates giving their strenghts and limitations
Reading time: 7 minutes
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