Food Safety Matters

Ep. 212. Dr. Claire Sand: The Future of Food Packaging and Chemicals of Concern

6 snips
Feb 24, 2026
Dr. Claire Sand, a packaging science leader with 40 years advancing sustainable food packaging, explains what “clean packaging” means and why chemicals of concern persist. She contrasts PFAS with BPA and phthalates, explores how PFAS spread through supply chains and recycling, and discusses regulation, supplier transparency, compostable packaging risks, and steps brands can take to reduce chemical hazards.
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INSIGHT

Why PFAS Are Harder To Replace

  • PFAS are harder to replace than BPA or phthalates because functional substitutes are limited and some industry shifts led to regrettable swaps (long-chain to short-chain).
  • Sand compared that substitution to avoiding a pothole by driving into a ditch, increasing distrust and uncertainty.
INSIGHT

PFAS In Paperboard Threaten Recycling Streams

  • PFAS are primarily used for grease and oil resistance in paperboard (e.g., fry containers), which complicates recycling because paperboard is widely recycled.
  • Sand warned that PFAS persistence means recycled paper streams can become contaminated and enter direct food-contact applications.
ADVICE

Do End Testing On Final Packages

  • Do end-product testing on final packages to verify PFAS and other chemicals of concern before consumer use.
  • Sand recommended end testing because multiple conflated contamination sources (water, recycled input) can affect final package levels.
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