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
March 7, 2023
Scientists find most silicon rubber kitchenwares are endocrine disrupting
Study determines toxicity and composition of 42 silicon rubber food contact articles; finds 84% of silicon kitchenware to induce endocrine activity; review gives update on the known endocrine disruptors phthalates and bisphenols with focus on detection methods and addressing regulatory concerns; study develops and applies method for phthalate determination in vegetable oils
February 27, 2023
Toward a guidance to assess safety of food packaging coatings
Interlaboratory study evaluates protocol for consistent safety assessment of coated metal packaging materials; guidance comprises sample preparation, chemical and biological analysis; finds technical differences affect outcome; emphasizes need for aligned protocol to avoid inconsistencies
January 26, 2023
Biodegradable plastics may bring degradation and toxicity challenges, say scientists
In an opinion piece published in Waste Management scientists emphasize there is no universal biodegradability of plastics in any ecosystem; waste collection systems need adaptation and toxicity testing improvements; experimental study finds leachates of biodegradable plastic items affect mussel early embryo stages development and adult physiological parameters
January 17, 2023
Microplastics impacts on the reproductive system and offspring
Scientists report human-relevant polystyrene (PS) microplastic concentrations change mice placental metabolism; show nanoplastics have variable effects on placental enzymes using simulations; find pre- and postnatal PS microplastic exposure affects male mice testis development and fertility; recommend future research to analyze multigenerational effects
November 18, 2022
Study investigates quantity and risk of oligomers in PBT
Researchers analyze oligomer in extracts and migrates of polybutylene terephthalate (PBT) food contact articles also comparing levels in food and food simulants; report human exposure to oligomers can exceed daily threshold in some scenarios; express the need for toxicological evaluation of PBT oligomers
November 17, 2022
Chemicals used to produce PET cause cells to store fat, say scientists
Study investigate correlation of starting substances to manufacture polyethylene terephthalate (PET) with obesity; report these para-phthalates to alter adipogenesis in vitro at nanomolar concentrations; consider ascertaining their safe levels a high priority
October 28, 2022
Microplastics in humans: current knowledge and potential implications
Review summarizes microplastics abundance and characteristics in human biological samples including current research approaches employed, challenges, and prospects; study indicates microplastics impact human meconium and placenta microbiota; review outlines current evidence on microplastic effects upon exposure during early developmental stage
October 26, 2022
Scientists present and apply spectral database on plastic additives
Researchers develop high-resolution spectral database and method for the identification of 56 selected organic plastic additives; indicates presence of multiple additives when applied to polypropylene and polylactic acid food packaging; highlight chemical signature not polymer but product dependent and “bioplastic” just as conventional plastics contain harmful additives
October 21, 2022
Bioassays can help to develop safer food packaging
In vitro study assesses hormonal activity of leachates from bio-based polymers used in food packaging; demonstrates integration of toxicity testing in packaging development can help reduce toxicity and design safer bio-based packaging
