. 2020 Aug 13;9(8):1117. doi: 10.3390/foods9081117

Table 1.

Surface colour, UV barrier and transparency of composite films with Thyme oil.

Film	Lightness (L)	Redness, Greenness (a)	Yellowness, Blueness (b)	Total Colour Difference (∆E)	Transmittance (T₂₈₀ (%))	Transmittance (T₆₀₀ (%))
PLA/PBAT	91.56 ± 0.36 ^a	−1.08 ± 0.02 ^c	1.34 ± 0.03 ^a	2.42 ± 0.35 ^d	0.05 ± 0.00 ^b	72.46 ± 0.63 ^a
PLA/PBAT-Thyme^1%	93.21 ± 0.08 ^b	−1.17 ± 0.02 ^b	1.31 ± 0.04 ^a	0.97 ±0.24 ^a	0.04 ± 0.01 ^a	73.43 ± 1.45 ^a
PLA/PBAT-Thyme^5%	92.93 ± 0.05 ^c	−1.27 ± 0.01 ^a	1.69 ± 0.03 ^b	1.22 ± 0.04 ^b	0.04 ± 0.01 ^a	81.28 ± 2.63 ^b
PLA/PBAT-Thyme^10%	92.95 ± 0.03 ^d	−1.30 ± 0.02 ^a	1.89 ± 0.07 ^c	1.29 ± 0.05 ^c	0.04 ± 0.01 ^a	81.28 ± 3.32 ^b

The letters (a–d) at each concentration specifies groups that are significantly different (p < 0.05).