Changes in phenolic profiles and antioxidant activity in rabbiteye blueberries during ripening

Figures & data

Figure 1. Total polyphenol and total flavonoids in rabbiteye blueberries during ripening. Different lower case letters within each column represent significant differences among cultivars at the same ripeness stages and (P < 0.05)

Figure 2. Phenolic compounds in rabbiteye blueberries during ripening. Different lower case letters within each column represent significant differences among cultivars at the same ripeness stages and (P < 0.05)

Figure 3. Antioxidant activity in rabbiteye blueberries during ripening. Different lower case letters within each column represent significant differences among cultivars at the same ripeness stages and (P < 0.05)

Table 1. Correlation coefficient of 15 indices

Indices	1 Gallic acid	2	3	4	5	6	7	8	9	10	11	12	13	14
2 Catechin	0.568**
3 Chlorogenic acid	−0.192	0.035
4 Epcatechin	−0.154	0.254	0.174
5 p-coumaric acid	−0.291	0.104	0.249	0.725**
6 Ferulic acid	−0.038	0.217	0.153	0.581**	0.834**
7 Ellagic acid	0.273	0.536**	−0.063	−0.174	−0.168	−0.193
8 Rutin	0.263	0.533**	−0.054	−0.169	−0.154	−0.182	0.998**
9 Quercetin	0.364	0.536**	−0.166	−0.117	−0.078	−0.104	0.915**	0.922**
10 TPC	0.110	0.389*	0.096	0.643**	0.754**	0.780**	−0.099	0.093	0.064
11 TFs	0.366*	0.593*	0.004	0.224	0.361*	0.550**	0.441**	0.448**	0.492**	0.454**
12 FRAP	−0.042	−0.162	0.060	0.148	0.049	−0.280	0.097	0.100	0.040	−0.248	−0.061
13 TRAP	0.191	0.575**	0.138	0.601**	0.704**	0.862**	0.115	0.127	0.216	0.838**	0.732**	−0.306
14 DPPH	0.072	0.346*	0.618**	0.152	0.473**	0.380*	0.447**	0.465**	0.447**	0.280	0.452**	0.125	0.424**
15 ABTS	0.259	0.512**	0.069	0.309	0.634**	0.748**	0.266	0.270	0.390*	0.755**	0.787**	−0.211	0.855**	0.527**

*(P<0.05); **(P<0.01).