Table 4.
Antioxidant contents of Phellinus baumii extracts depending on extraction conditions
Ethanol conc. (%) | TPC1) (GAE g/L) | TFC (CE g/L) |
pH 4 | pH 7 | pH 10 | pH 4 | pH 7 | pH 10 |
0 | 0.37±0.01aD2) | 0.29±0.01cD | 0.35±0.00bD | 0.25±0.00bD | 0.28±0.00aD | 0.24±0.00cD |
30 | 1.11±0.01bC | 1.08±0.01cC | 1.33±0.02aC | 1.00±0.00bC | 0.93±0.01cC | 1.08±0.01aC |
60 | 2.05±0.01bA | 2.16±0.01aA | 1.78±0.02cA | 1.70±0.01bA | 1.74±0.01aA | 1.49±0.01cB |
90 | 1.18±0.03bB | 1.19±0.01bB | 1.38±0.02aB | 1.28±0.01cB | 1.27±0.05bB | 1.50±0.01aA |
TPC, total phenolic contents; TFC, total flavonoid contents; GAE, gallic acid equivalent; CE, catechin equivalent.
abcdMean±SD (n=3) within each row followed by the same letter are not significantly different (p<0.05); ABCDmean±SD (n=3) within each column followed by the same letter are not significantly different (p<0.05).