Table 2.
Phenolic compound concentrations within each cultivar (averaged from all time points) and quantified phenolic concentration (QPC). Cultivars are presented in the same order as in Figure 1 based on their level of flesh browning: minimal browning (first 4 cultivars), moderate browning (the portion of table shaded in gray), and severe browning (last 4 cultivars).
| Cultivar | Catechin (mg/g FW) | Epicatechin (mg/g FW) | Chlorogenic Acid (mg/g FW) |
p-Coumaric Acid (mg/g FW) |
Phloridzin (mg/g FW) | Proanthocyanidis (mg/g FW) | Quant. phenolic Conc. (mg/g FW) |
|---|---|---|---|---|---|---|---|
| ‘Granny Smith’ | 0.026 b | 0.06 ab | 0.03 f | 0.002 c | 0.004 cd | 0.37 abc | 0.49 abc |
| ‘Cripps Pink’ | 0.003 d | 0.04 b | 0.16 bcd | 0.003 c | 0.004 d | 0.22 bc | 0.43 abc |
| ‘Red Rome’ | 0.010 cd | 0.06 ab | 0.25 a | 0.005 bc | 0.005 bcd | 0.28 abc | 0.60 a |
| ‘Durello’ | 0.049 a | 0.08 a | 0.03 ef | 0.006 ab | 0.006 abcd | 0.43 a | 0.60 ab |
| ‘Fuji’ | 0.010 cd | 0.07 ab | 0.20 abc | 0.006 abc | 0.014 a | 0.37 abc | 0.66 a |
| ‘Florina’ | 0.005 cd | 0.04 b | 0.05 ef | 0.001 d | 0.006 abc | 0.22 bc | 0.32 c |
| ‘Braeburn’ | 0.003 d | 0.04 b | 0.11 def | 0.011 a | 0.005 abcd | 0.18 c | 0.35 bc |
| ‘G. Delicious’ | 0.004 d | 0.05 ab | 0.12 cde | 0.008 a | 0.008 ab | 0.37 abc | 0.55 abc |
| ‘Delorina’ | 0.007 cd | 0.05 ab | 0.08 def | - | 0.011 a | 0.42 a | 0.57 abc |
| ‘Gloster’ | 0.011 bcd | 0.04 b | 0.21 ab | 0.008 ab | 0.009 ab | 0.18 c | 0.46 abc |
| ‘Topaz’ | 0.013 bcd | 0.08 a | 0.09 def | - | 0.003 d | 0.45 a | 0.63 a |
| ‘Fiesta’ | 0.005 d | 0.04 b | 0.22 ab | 0.003 c | 0.003 bcd | 0.22 bc | 0.49 abc |
| ‘Jonathan’ | 0.019 bc | 0.07 ab | 0.07 ef | 0.005 bc | 0.005 abcd | 0.33 abc | 0.50 abc |
| ‘M. Gala’ | 0.020 bcd | 0.07 ab | 0.16 bcd | 0.010 bc | 0.006 abcd | 0.38 ab | 0.65 a |
| LSD | 0.015 | 0.03 | 0.09 | 0.005 | 0.007 | 0.20 | 0.26 |
In each column, bold highlights the highest and lowest values in each column; LSD = least significant difference as determined by Tukey HSD at p < 0.05; Means with the different letters (on the right side of each value) within each column indicate significant differences at p < 0.05.