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. 2021 Jun 16;22(7):2935–2953. doi: 10.1021/acs.biomac.1c00353

Table 2. Optical Properties of the Electrospun Biopapers of Commercial and Cheese Whey (CW)-Derived Poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV) with 3-Hydroxyvalerate (3HV) Contents of 20 mol % (PHBVCW20), 40 mol % (PHBVCW40), and 60 mol % (PHBVCW60)b.

biopaper a* b* L* ΔE* T
commercial PHBV2a 0.35 ± 0.03a 1.29 ± 0.01a 89.14 ± 0.02a   9.20 ± 0.08a
PHBVCW20 –2.31 ± 0.04b 10.46 ± 0.02b 88.19 ± 0.05b 9.60 ± 0.03a 1.80 ± 0.03b
PHBVCW40 –0.85 ± 0.01c 5.80 ± 0.02c 88.43 ± 0.04c 4.72 ± 0.02b 4.84 ± 0.02c
PHBVCW60 –0.47 ± 0.02d 5.99 ± 0.02d 87.80 ± 0.03d 4.96 ± 0.02c 4.89 ± 0.03c
a

Data reported in a previous study.22

b

Different letters (a–d) in the same column indicate a significant difference among the samples (p < 0.05). a*: red/green coordinates (+a red, −a green); b*: yellow/blue coordinates (+b yellow, −b blue); L*: luminosity (+L luminous, −L dark); ΔE*: color differences; T: transparency.