Table 1.

HPLC analysis of the extract and media after 72 h of material incubation.

Polyphenol	Extract	PCL/4.5PPh film		PCL-A2/4.5PPh film
	Concentration (mg dm−3)	Concentration (mg dm−3)	% of release	Concentration (mg dm−3)	% of release
Phenolic acids
Gallic acid	0.09 ± 0.00	0.00 ± 0.00	0	0 ± 0.00	0
Chlorogenic acid	0.75 ± 0.18	0.56 ± 0.02	74	0.31 ± 0.01	41
Caffeic acid	1.85 ± 0.00	1.86 ± 0.00	100	0.96 ± 0.00	52
Vanillic acid	0.15 ± 0.00	0.11 ± 0.00	72	0.12 ± 0.00	83
Syringic acid	2.31 ± 0.01	2.01 ± 0.07	87	0.74 ± 0.04	32
p-Coumaric acid	0.15 ± 0.01	0.15 ± 0.01	100	0.14 ± 0.01	95
Ferulic acid	1.41 ± 0.00	0.66 ± 0.00	47	0.77 ± 0.00	55
Sinapinic acid	0.23 ± 0.02	0.19 ± 0.01	85	0.21 ± 0.00	94
Rosmarinic acid	174.13 ± 0.09	160.26 ± 0.12	92	10.79 ± 0.01	6
4-Hydroxybenzoic acid	1.19 ± 0.02	0.39 ± 0.03	33	0.93 ± 0.00	79
Flavonoids
Naringin	4.32 ± 0.18	3.72 ± 0.00	86	0.48 ± 0.01	11
Rutin	1.55 ± 0.09	0.59 ± 0.50	38	1.24 ± 0.01	81
Hesperidin	0.08 ± 0.00	0.08 ± 0.69	97	0.07 ± 0.01	93
Myricetin	2.20 ± 0.14	1.37 ± 0.02	62	0.54 ± 0.00	24
Quercetin	0.89 ± 0.00	0.8 ± 0.04	90	0.63 ± 0.00	70
Luteolin	0.28 ± 0.01	0.27 ± 0.03	97	0.28 ± 0.00	99
Kaempferol	0.34 ± 0.00	0.28 ± 0.00	81	0.23 ± 0.00	68
Apigenin	0.26 ± 0.01	0.19 ± 0.00	72	0.11 ± 0.00	41
Isorhamnetin	0.45 ± 0.01	0.32 ± 0.00	71	0.33 ± 0.01	73
Hispidulin	0.47 ± 0.01	0.37 ± 0.01	78	0.42 ± 0.00	89
Epicatechin	15.45 ± 0.08	13.78 ± 0.24	89	0.24 ± 0.03	2
Catechin	1.49 ± 0.01	1.32 ± 0.05	88	1.49 ± 0.02	100
Acacetin	0.16 ± 0.00	0.15 ± 0.00	98	0.37 ± 0.37	90
Phenolic diterpenes
Carnosol	47.35 ± 0.03	46.83 ± 0.11	99	0.00 ± 0.01	0
Carnosic acid	7.10 ± 0.10	4.73 ± 0.06	67	4.99 ± 0.00	70