Copigmentation with Sinapic Acid Improves the Stability of Anthocyanins in High-Pressure-Processed Strawberry Purees

Table 1

Antioxidant capacity and total anthocyanin contents of fresh/unprocessed commercial strawberry samples and processed purees with and without added sinapic acid.

Cultivars/treatment	TPC	Total anthocyanins	ORAC
Unprocessed Camarosa	265.2 ± 9.2^a	83.2 ± 0.81^a	4.4 ± 0.05^a
Unprocessed Rubygem	236.2 ± 6.1^b	64.2 ± 0.45^b	4.2 ± 0.20^ab
Unprocessed Festival	239.9 ± 6.3^b	91.9 ± 2.22^c	3.7 ± 0.16^b
Camarosa TP-NP	209.9 ± 5.1^c	64.7 ± 2.4^ad	2.9 ± 0.07^c
Camarosa HPP-NP	216.4 ± 1.5^c	61.7 ± 2.92^d	2.9 ± 0.08^c
Camarosa TP-CP	289.0 ± 2.1^ad	71.7±1.71^ad	5.5±0.02^d
Camarosa HPP-CP	295.9 ± 9.8^d	63.8 ± 8.31^d	5.1 ± 0.38^ad
Rubygem TP-NP	179.8 ± 6.9^e	48.3 ± 3.85^e	2.6 ± 0.03^e
Rubygem HPP-NP	183.3 ± 1.2^e	46.5 ± 1.29^e	2.5 ± 0.15^e
Rubygem TP-CP	251.1 ± 3.2^b	53.5 ± 0.98^e	3.5 ± 0.2^f
Rubygem HPP-CP	247.0 ± 1.6^b	44.7 ± 0.8^e	2.8 ± 0.1^ef
Festival TP-NP	206.1 ± 3.5^b	67.6 ± 0.24^f	2.9 ± 0.09^bg
Festival HPP-NP	218.1 ± 13.1^b	73.5 ± 6.92^f	2.8 ± 0.34^g
Festival TP-CP	292.4 ± 11.6^f	65.9 ± 1.7^f	3.5 ± 0.12^bg
Festival HPP-CP	305.7 ± 2.9^f	75.1 ± 3.82^cf	3.7 ± 0.32^bg

Data: means ± SD (). Results are expressed in mg GAE/100 g FW (TPC), μmol/100 g FW (anthocyanins), and mmol TE/100 g FW (ORAC). FW: fresh weight; anthocyanins: sum of cya-3-glc, pel-3-glc, and pel-3-rut (expressed as pel-3-glc); TP-NP: non-copigmented thermally processed; TP-CP: copigmented thermally processed; HPP-NP: non-copigmented high-pressure processed; HPP-CP: copigmented high pressure processed; TPC: total phenolic content. Different letters within a group in a column indicate a significant difference (), the groups being unprocessed samples, processed Camarosa samples together with unprocessed Camarosa, processed Rubygem samples with unprocessed Rubygem, and processed Festival samples with unprocessed Festival.