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. 2021 Jan 20;10(2):151. doi: 10.3390/antiox10020151

Table 1.

Antioxidant potentials of five Australian grown pear varieties.

Antioxidant Assays Beurre Bosc Josephinede Malines Packham’s Triumph Winter Nelis Rico
TPC (mg GAE/g) 3.14 ± 0.02 a 2.75 ± 0.03 b 2.19 ± 0.06 d 1.89 ± 0.03 e 2.45 ± 0.09 c
TFC (mg QE/g) 1.04 ± 0.07 b 1.53 ± 0.09 a 0.94 ± 0.07 c 0.57 ± 0.05 e 0.74 ± 0.07 d
TTC (mg CE/g) 1.43 ± 0.04 a 1.01 ± 0.04 c 0.81 ± 0.03 d 0.72 ± 0.09 d 1.10 ± 0.03 b
DPPH (mg AAE/g) 5.72 ± 0.11 a 4.78 ± 0.06 b 4.12 ± 0.09 c 3.25 ± 0.03 d 4.72 ± 0.06 b
FRAP (mg AAE/g) 3.93 ± 0.04 b 4.37 ± 0.04 a 3.14 ± 0.07 c 2.15 ± 0.07 e 2.94 ± 0.01 d
ABTS (mg AAE/g) 4.41 ± 0.07 a 4.44 ± 0.01 a 3.97 ± 0.10 b 2.83 ± 0.06 d 3.19 ± 0.04 c
TAC (mg AAE/g) 3.92 ± 0.04 c 5.29 ± 0.09 a 4.85 ± 0.03 b 3.94 ± 0.01 c 2.87 ± 0.09 d

a,b,c,d,e indicate the means in a row with significant difference (p < 0.05) using a one-way analysis of variance (ANOVA) and Tukey’s test. TPC, total phenolic content; TFC, total flavonoid content; TTC, total tannin content; DPPH, 2,2′-diphenyl-1-picrylhydrazyl assay; FRAP, ferric reducing antioxidant power assay; ABTS, 2,2′-azino-bis-3-ethylbenzothiazoline-6-sulfonic acid assay; TAC, total antioxidant capacity; GAE, gallic acid equivalents; QE, quercetin equivalents; CE, catechin equivalents; AAE, ascorbic acid equivalents.