Why does marinara sauce always stain reusable containers?
In: Chemistry
Plastic is a actually porous so it’s almost as if that container is absorbing it. The same is true for disposable contact lenses absorbing pollutants.
It’s the red pigment in tomatoes, lycopene, that stains plastic. If you search online, people say that bleach or other chemicals will remove the stains, but I haven’t found any that work well.
The acidity eats away at it. That’s why ketchup packs deteriorate from the inside after time
If you remember dishwashers use to turned pink inside if you washed dishes with pasta sauce on them. manufacturers used a talc like powder as a mold release agent that also have the plastic a satin look. The lycopene like to sit in the tiny pores left by the talc. Newer dishwashers tend to have a glossy finish to the tub
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