Table 1.

Color parameters (L*, a*, b*, and ΔE_ab*) of the bio-based high-density polyethylene (bio-HDPE) films containing different amounts of gallic acid (GA).

Film	L*	a*	b*	ΔEab*
Bio-HDPE	82.9 ± 1.0	−1.9 ± 0.1	−2.8 ± 0.3	-
Bio-HDPE + 0.3GA	75.3 ± 0.9	−0.7 ± 0.3	8.8 ± 0.4	13.9 ± 0.9
Bio-HDPE + 0.8GA	70.6 ± 0.5	−0.1 ± 0.1	10.9 ± 0.2	18.5 ± 0.4