[z2h-a6n]

Do you have a reason to expect significant levels of microplastics and PFAS to be introduced due to pasteurization in the container?

For what it's worth, the tofu packaging I have in front of me, which looks like all of the other tofu packaging I've seen, is made of polypropylene (not sure about the film covering), which is made of carbon and hydrogen, so I'm not sure where the PFAS would come from.

Another thing to consider is whether the customers like eating (some potentially negligible amount of) microlplastics and (probably ~ zero) PFAS more than they like eating unpasteurized tofu since that seems likely to be the only economical alternative.

[minimalist]

With respect to microplastics and nanoplastics, this study explored the mobilization of plastics when heating up foods in plastic containers (a few months ago) [0].

I was also surprised to see the pasteurization occur in the plastic container and after researching this a bit, it seems like it is the industry standard. I guess a good thesis topic would be seeing if there was a difference in micro/nanoplastics present in pasteurized vs unpasteurized tofu.

[0]: https://news.ycombinator.com/item?id=37624070