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Testing baby bottles for the presence of residual and migrated bisphenol A

Manal Ali1, Madi Jaghbir1, Mahmoud Salam2

  • 1Department of Family and Community Medicine, Faculty of Medicine, University of Jordan, Amman, Jordan.

Environmental Monitoring and Assessment
|December 12, 2018
PubMed

Insights

Bisphenol A (BPA) leaches from polycarbonate baby bottles, with 100% releasing BPA after stress tests. While not exceeding safe limits, prolonged use with other plastics may pose risks.

Area of Science:

  • Environmental Science
  • Toxicology
  • Materials Science

Background:

  • Bisphenol A (BPA) is a chemical linked to trans-generational genetic and behavioral changes, obesity, and thyroid dysfunction.
  • Polycarbonate (PC) plastics, often used in baby bottles, may contain or release BPA.
  • Understanding BPA leaching from baby bottles is crucial for infant health and safety.

Purpose of the Study:

  • To detect the presence and quantify the levels of BPA in polycarbonate baby bottles.
  • To assess BPA migration under various stress conditions.
  • To estimate potential BPA intake in infants and compare it to the tolerable daily intake (TDI).

Main Methods:

  • Random selection of fifteen polycarbonate baby bottles marketed as BPA-free.
  • High-Performance Liquid Chromatography (HPLC) analysis to detect residual and migrating BPA.
  • Three sequential stress tests were applied to simulate usage and washing.

Main Results:

  • 27% of bottles initially contained detectable residual BPA.
  • 100% of bottles released migrating BPA after the second and third stress tests.
  • A significant positive linear trend in BPA levels was observed across stress tests (P < 0.0001), with stress accounting for 73.5% of variability (P < 0.0001).

Conclusions:

  • Polycarbonate baby bottles, even those labeled BPA-free, can release BPA, particularly after repeated stress.
  • Infant BPA intake from bottles can range from 0.8% to 23.8% of TDI, with combined exposure potentially exceeding limits.
  • Recommendations include cautious use of plastic bottles, awareness of usage duration, and manufacturer transparency regarding BPA content and usage guidelines.

Keywords:
BPABottlesMigratedMilkPlasticResidual

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