Skip to main content
. 2011 Oct 12;16(10):8590–8600. doi: 10.3390/molecules16108590

Table 4.

Cellular antioxidant activity of chestnut burs extracts and fractions.

no PBS wash PBS wash cytotoxicity
EC50 (mg/mL) CAA (μmol of QE/100g) EC50 (mg/mL) CAA (μmol of QE/100g) CC50 (mg/Ml)
water extraction 38.7 ± 3.5 A 11.6 ± 0.4 A 389 ± 34 A 1.86 ±0.29 A 249.3
30% ethanol extraction 36.5 ± 2.9 A 11.9 ± 0.6 A 334 ± 22 B 1.98 ± 0.26 A 213.5
50% ethanol extraction 33.5 ± 3.1 A 12.6 ± 0.5 A 276 ± 19 C 2.86 ± 0.23 B 224.9
75% ethanol extraction 34.6 ± 3.3 A 12.3 ± 0.3 A 266 ± 12 C 2.71 ± 0.15 B 306.5
Fraction I 71.6 ± 4.1 B 10.2 ± 0.4 B 556 ± 48 D 1.11 ± 0.11 C 300.4
Fraction II 14.2 ± 2.2 C 54.2 ± 2.6 C 109 ± 12 E 5.66 ±0.20 D 278.5

QE: quercetin equivalent. In each column different letters mean significant differences (p < 0.05).