TABLE 2.

Quality values (color, DPPH free radical scavenging activity, and total phenol content) of apple juice

Dose (J/cm2)a	Quality valueb
	Color			DPPH free radical scavenging activity (%)	Total phenol (mg GAE/liter)
	L*	a*	b*
Control	36.17 ± 0.05 A	0.12 ± 0.02 A	0.39 ± 0.03 A	76.37 ± 0.22 A	91.97 ± 1.14 A
0	36.16 ± 0.02 A	0.15 ± 0.03 A	0.34 ± 0.04 A	76.77 ± 0.33 A	366.17 ± 14.90 BC
1	36.12 ± 0.05 A	0.14 ± 0.04 A	0.39 ± 0.03 A	76.53 ± 0.22 A	373.38 ± 10.65 BC
3	36.15 ± 0.06 A	0.12 ± 0.01 A	0.35 ± 0.05 A	76.45 ± 0.55 A	353.42 ± 10.22 C
5	36.16 ± 0.02 A	0.11 ± 0.08 A	0.34 ± 0.12 A	76.30 ± 0.33 A	388.86 ± 22.49 B
7	36.19 ± 0.05 A	0.10 ± 0.03 A	0.32 ± 0.06 A	76.61 ± 0.33 A	380.98 ± 22.78 BC
9	36.14 ± 0.04 A	0.15 ± 0.05 A	0.35 ± 0.03 A	76.37 ± 0.22 A	376.88 ± 30.41 BC

^aControl is an untreated apple juice sample. Groups treated with CA plus UV-A are expressed with numbers that indicate treatment dose (J/cm²).

^bData were expressed as means ± standard deviations. Values in the same column with the same uppercase letter are not significantly different (P > 0.05).