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 2

Results of the optical measurement of the oxygen barrier.

Trial	OTR	𝑄 whey coating	𝑄 100 whey coating
	(cm³ (STP) m^−2 d^−1 bar^−1)	(cm³ (STP) m^−2 d^−1 bar^−1)	(cm³ (STP) m^−2 d^−1 bar^−1)
PET	101	—	—
PET/whey coating/PE	3.1	3.2	0.4