Table 3.

Composition of polyphenols in plum pomaces obtained from ‘Dąbrowicka’, ‘Cacanska Najbolja’, and ‘Promis’ cultivars submitted to air- or freeze-drying

		‘Dąbrowicka’				‘Cacanska Najbolja’				‘Promis’				Cultivar	Drying	CxD
		AD±SD		FD±SD		AD±SD		FD±SD		AD±SD		FD±SD
HCA	[mg 100 g−1]	7.7d	0.5	16.5b	1.1	10.8c	0.1	31.2a	0.2	16.0b	0.6	9.5c	0.9	<0.05	<0.05	<0.05
QG	[mg 100 g−1]	21.8a	1.0	21.7a	0.6	19.6a	1.3	19.7a	0.9	12.6b	1.3	11.9b	0.3	<0.05	0.70	0.81
ANT	[mg 100 g−1]	2.9c	0.2	3.8bc	0.5	4.1b	0.6	12.9a	0.6	4.1b	0.1	4.8b	0.2	<0.05	<0.05	<0.05
POHPLC	[mg 100 g−1]	32.3c	0.6	42.0b	2.2	34.5cd	1.8	63.8a	0.5	32.7c	0.7	25.7d	0.3	<0.05	<0.05	<0.05
PROVT	[mg 100 g−1]	210.8f	14.1	644.2e	5.6	1000.3c	23.6	1512.8b	10.7	886.0d	5.4	1784.8a	47.9	<0.05	<0.05	<0.05
Σ POHPLC + PROVT	[mg 100 g−1]	243.1		686.2		1034.8		1576.6		918.7		1810.5		<0.05	<0.05	<0.05
Antioxidant activity	[mikroM TEAC g−1 d.m.].	9.9d	0.5	10.0d	0.7	13.7c	1.0	17.4a	0.1	15.2b	0.1	15.5b	0.7	<0.05	<0.05	<0.05

AD air-dried plum-pomace, FD freeze-dried plum pomace, HCA hydroxycinamic acids, QG quercetin glycosides, ANT anthocyans, PO_HPLC sum of polyphenols by HPLC, PRO_VT proanthocyanidins by vanilin test, Σ PO_HPLC+ PRO_VT sum of all polyphenols (by HPLC and by vanilin test), C cultivar, D drying, TEAC Trolox values in rows marked with different letters are different at α ≤ 0.05, n = 3