Effect of Packaging Films on the Quality of Canola Oil under Photooxidation Conditions

Table 2

The properties of packaging materials.

Film	Thickness/μm	Average visible light transmittance^**	Oxygen permeability; rate^***/cm^3/(m^2·d)
PET15/CPP20	35.2 ± 2.4	87.1 ± 4.0%	69.2 ± 5.6
KPET15/PE50	64.8 ± 3.1	80.4 ± 3.3%	9.0 ± 0.7
CPP25	24.7 ± 2.0	89.7 ± 3.9%	1145.4 ± 75.2
CPP30	30.1 ± 2.2	86.9 ± 3.2%	807.5 ± 50.5

Use UV-2802 spectrophotometer to obtain spectral scans.
^***According to GB/T 1038–2000 [16], tested by China National Light Industry Package Quality Supervising & Testing Center.