. 2020 Feb 7;25(3):722. doi: 10.3390/molecules25030722

Table 4.

Anthocyanin degradation rate constant at 60 °C for PPE and PPE-MD and their color difference values.

System	k(obs) ± DS (days-1)	r²	ΔΕ
PPE	11.18 × 10² ± 0.10 × 10^{2 a}	0.971	58.3 ± 0.3 ^a
PPE-MD	0.53 × 10² ± 0.02 × 10^{2 b}	0.974	18.4 ± 0.2 ^b

PPE: purple potato extract; PPE-MD: purple potato extract encapsulated with maltodextrin; ΔΕ: color difference values. Different letters indicate statistically significant differences between systems for the Tukey multiple range test (p < 0.05), a correspond to highest values and b correspond to lowest values.