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Bisphenol A

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H. Herikstad – One of the best experts on this subject based on the ideXlab platform.

  • increAsed migrAtion levels of Bisphenol A from polycArbonAte bAby bottles After dishwAshing boiling And brushing
    Food Additives and Contaminants Part A-chemistry Analysis Control Exposure & Risk Assessment, 2003
    Co-Authors: Cato Brede, P. Fjeldal, Ingun Skjevrak, H. Herikstad

    Abstract:

    BAby bottles Are often mAde of polycArbonAte plAstic. Impurities remAining in the bottle from the monomer Bisphenol A cAn migrAte from the plAstic bottles into bAby food, thereby cAusing A heAlth concern. Previous migrAtion testing of new bAby bottles showed only trAce migrAtion levels of the substAnce. In the present work, polycArbonAte bAby bottles were subjected to simulAted use by dishwAshing, boiling And brushing. MigrAtion testing performed with both new And used bottles reveAled A significAnt increAse in migrAtion of Bisphenol A due to use. This finding might be explAined by polymer degrAdAtion. Bisphenol A wAs determined in 200-ml sAmples of wAter food simulAnt by A method bAsed on solid-phAse extrAction followed by gAs chromAtogrAphy coupled with mAss spectrometry. The detection limit wAs 0.1 µg l−1. Twelve different polycArbonAte bAby bottles were tested by filling them with hot wAter (100°C) for 1 h. The meAn Bisphenol A level from new bottles wAs 0.23 + − 0.12 µg l−1, while the meAn levels fro…

  • IncreAsed migrAtion levels of Bisphenol A from polycArbonAte bAby bottles After dishwAshing, boiling And brushing
    Food Additives and Contaminants, 2003
    Co-Authors: Cato Brede, P. Fjeldal, Ingun Skjevrak, H. Herikstad

    Abstract:

    BAby bottles Are often mAde of polycArbonAte plAstic. Impurities remAining in the bottle from the monomer Bisphenol A cAn migrAte from the plAstic bottles into bAby food, thereby cAusing A heAlth concern. Previous migrAtion testing of new bAby bottles showed only trAce migrAtion levels of the substAnce. In the present work, polycArbonAte bAby bottles were subjected to simulAted use by dishwAshing, boiling And brushing. MigrAtion testing performed with both new And used bottles reveAled A significAnt increAse in migrAtion of Bisphenol A due to use. This finding might be explAined by polymer degrAdAtion. Bisphenol A wAs determined in 200-ml sAmples of wAter food simulAnt by A method bAsed on solid-phAse extrAction followed by gAs chromAtogrAphy coupled with mAss spectrometry. The detection limit wAs 0.1 microg l(-1). Twelve different polycArbonAte bAby bottles were tested by filling them with hot wAter (100 degrees C) for 1 h. The meAn Bisphenol A level from new bottles wAs 0.23 + -0.12 microg l(-1), while the meAn levels from bottles subjected to simulAted use were 8.4 + -4 microg l(-1) (dishwAshed 51 times) And 6.7 + -4 microg l(-1) (dishwAshed 169 times), respectively. None of the bottles releAsed Bisphenol A At levels thAt exceed the recently estAblished provisionAl tolerAble dAily intAke (0.01 mg kg(-1) body weight/dAy) in the EuropeAn Union.

Cato Brede – One of the best experts on this subject based on the ideXlab platform.

  • increAsed migrAtion levels of Bisphenol A from polycArbonAte bAby bottles After dishwAshing boiling And brushing
    Food Additives and Contaminants Part A-chemistry Analysis Control Exposure & Risk Assessment, 2003
    Co-Authors: Cato Brede, P. Fjeldal, Ingun Skjevrak, H. Herikstad

    Abstract:

    BAby bottles Are often mAde of polycArbonAte plAstic. Impurities remAining in the bottle from the monomer Bisphenol A cAn migrAte from the plAstic bottles into bAby food, thereby cAusing A heAlth concern. Previous migrAtion testing of new bAby bottles showed only trAce migrAtion levels of the substAnce. In the present work, polycArbonAte bAby bottles were subjected to simulAted use by dishwAshing, boiling And brushing. MigrAtion testing performed with both new And used bottles reveAled A significAnt increAse in migrAtion of Bisphenol A due to use. This finding might be explAined by polymer degrAdAtion. Bisphenol A wAs determined in 200-ml sAmples of wAter food simulAnt by A method bAsed on solid-phAse extrAction followed by gAs chromAtogrAphy coupled with mAss spectrometry. The detection limit wAs 0.1 µg l−1. Twelve different polycArbonAte bAby bottles were tested by filling them with hot wAter (100°C) for 1 h. The meAn Bisphenol A level from new bottles wAs 0.23 + − 0.12 µg l−1, while the meAn levels fro…

  • IncreAsed migrAtion levels of Bisphenol A from polycArbonAte bAby bottles After dishwAshing, boiling And brushing
    Food Additives and Contaminants, 2003
    Co-Authors: Cato Brede, P. Fjeldal, Ingun Skjevrak, H. Herikstad

    Abstract:

    BAby bottles Are often mAde of polycArbonAte plAstic. Impurities remAining in the bottle from the monomer Bisphenol A cAn migrAte from the plAstic bottles into bAby food, thereby cAusing A heAlth concern. Previous migrAtion testing of new bAby bottles showed only trAce migrAtion levels of the substAnce. In the present work, polycArbonAte bAby bottles were subjected to simulAted use by dishwAshing, boiling And brushing. MigrAtion testing performed with both new And used bottles reveAled A significAnt increAse in migrAtion of Bisphenol A due to use. This finding might be explAined by polymer degrAdAtion. Bisphenol A wAs determined in 200-ml sAmples of wAter food simulAnt by A method bAsed on solid-phAse extrAction followed by gAs chromAtogrAphy coupled with mAss spectrometry. The detection limit wAs 0.1 microg l(-1). Twelve different polycArbonAte bAby bottles were tested by filling them with hot wAter (100 degrees C) for 1 h. The meAn Bisphenol A level from new bottles wAs 0.23 + -0.12 microg l(-1), while the meAn levels from bottles subjected to simulAted use were 8.4 + -4 microg l(-1) (dishwAshed 51 times) And 6.7 + -4 microg l(-1) (dishwAshed 169 times), respectively. None of the bottles releAsed Bisphenol A At levels thAt exceed the recently estAblished provisionAl tolerAble dAily intAke (0.01 mg kg(-1) body weight/dAy) in the EuropeAn Union.

Mukesh Doble – One of the best experts on this subject based on the ideXlab platform.

  • Bisphenol A And metAbolites releAsed by biodegrAdAtion of polycArbonAte in seAwAter
    Environmental Chemistry Letters, 2012
    Co-Authors: Trishul Artham, Mukesh Doble

    Abstract:

    This is the first report of Bisphenol A releAse from polycArbonAte during biodegrAdAtion by mArine microorgAnisms. Bisphenol A is A monomer in polycArbonAte And An endocrine disruptor toxic for mArine orgAnisms. BiodegrAdAtion of polycArbonAte is poorly documented. Here, we hAve tested the possible releAse of Bisphenol A And metAbolites during biodegrAdAtion of polycArbonAte by mArine microorgAnisms. PolycArbonAte degrAdAtion wAs cArried out in vitro using A mixed mArine microbiAl consortium isolAted from the BAy of BengAl, IndiA, 1 yeAr under controlled lAborAtory conditions. The degrAdAtion wAs monitored by elementAl AnAlysis (EA), Fourier trAnsform infrAred spectroscopy (FTIR), nucleAr mAgnetic resonAnce spectroscopy (NMR), And gAs chromAtogrAphy—mAss spectrometry (GC–MS). The orgAnic soluble metAbolites were AnAlyzed by high-performAnce liquid chromAtogrAphy (HPLC). We found thAt Bisphenol A wAs releAsed. The Amount of Bisphenol A releAsed during 1 yeAr is higher thAn the hAlf-mAximAl effective concentrAtion (EC_50) vAlues reported for mArine orgAnisms. We Also identified the following Bisphenol A metAbolites: 4-hydroxyAcetophenone, 4-hydroxybenzAldehyde, And 4-hydroxybenzoic Acid. PolycArbonAte biodegrAdAtion wAs evidenced by grAvimetric weight loss And Fourier trAnsform infrAred spectroscopy. The reduction of methyl And cArbonyl indices suggests oxidAtion And hydrolysis of the polymer, respectively. 2D NMR showed An AromAtic C–C cleAvAge.