Table 4. Antioxidant activities of Citrus unshiu pulp and peel

Measurement	Extraction solvent	Pulp	Peel	Ascorbic acid (40 μg/mL)
DPPH radical scavenging (%)	Distilled water	41.77±1.541)c2)	65.61±1.27b***3)	65.83±1.28
	70% Ethanol	44.68±0.66b	66.51±0.32b***
	95% ethanol	54.87±0.81a	68.30±0.65a***
ABTS radical scavenging (%)	distilled water	48.61±0.59c	69.97±0.61b***	60.27±0.28
	70% ethanol	67.48±0.93b	72.47±0.88a**
	95% ethanol	70.21±1.38a	72.36±0.90a*
Reducing power (absorbance at 720 nm)	distilled water	0.74±0.01b	0.93±0.02a***	0.89±0.00
	70% ethanol	0.90±0.02a	0.96±0.03a*
	95% ethanol	0.92±0.02a	0.96±0.02a*

All values are mean±SD (n=3).
Means with different superscript letters (^a-c) in the same column are significantly different (p<0.05) by Duncan’s multiple range test.
Asterisks indicate significant differences between pulp and peel within the same row by Student’s t-test (^*p<0.05, ^**p<0.01, ^***p<0.001).