Processing and Validation of Whey-Protein-Coated Films and Laminates at Semi-Industrial Scale as Novel Recyclable Food Packaging Materials with Excellent Barrier Properties

Table 4

Weight loss in PET samples coated with whey and treated with Terg-a-zyme.

Time—enzyme concentration	Weight loss (%)
24 h—2% no stirring	15.8
4 h—1% stirring	14.3
2 h—2% stirring	14.7