. 2020 Jun 5;9(6):495. doi: 10.3390/antiox9060495

Table 1.

The phenolic compounds content in the leaves of bilberry and lingonberry using HPLC-DAD-ESI-MS and expressed as mg/g.

Phenolic Compounds		Retention Time R_t (min)	UV λ_max (nm)	[M+H]⁺ (m/z)	VMT	VMS	VMB	VVIT	VVIS	VVIB
Flavanols	Gallocatechin	2.97	279	307, 290	7.59 ± 0.07 ^b	15.37 ± 0.14 ^a	4.84 ± 0.05 ^c	35.10 ± 0.24 ^b	46.81 ± 0.38 ^a	31.41 ± 0.21 ^c
	Epigallocatechin	4.24	279	307, 290	n.d	6.56 ± 0.06	n.d	25.24 ± 0.72 ^b	35.97 ± 0.23 ^a	23.35 ± 0.61 ^c
	Catechin	12.58	280	291	9.87 ± 0.07 ^a	4.79 ± 0.07 ^c	5.38 ± 0.09 ^b	18.51 ± 0.21 ^b	21.57 ± 0.2 ^a	17.43 ± 0.18 ^b
	Epicatechin	13.11	280	291	4.31 ± 0.03 ^b	9.66 ± 0.08 ^a	n.d	n.d	n.d	2.78 ± 0.03
	Procyanidin dimer I	11.33	280	579, 291	n.d	n.d	n.d	6.38 ± 0.05 ^b	8.36 ± 0.06 ^a	6.27 ± 0.03 ^b
	Procyanidin dimer II	19.74	280	579, 291	12.68 ± 0.11 ^a	12.13 ± 0.12 ^a	8.70 ± 0.07 ^b	2.20 ± 0.05 ^b	4.23 ± 0.04 ^a	4.61 ± 0.03 ^a
	Procyanidin trimer	13.89	280	865, 291	21.84 ± 0.21 ^b	24.30 ± 0.72 ^a	10.09 ± 0.12 ^c	12.92±0.12 ^c	14.21±0.16 ^b	18.84±0.22 ^a
Hydroxycinnamic acids	Chlorogenic acid	12.01	281, 329	355, 163	3.34 ± 0.03 ^c	3.85 ± 0.02 ^b	5.94 ± 0.05 ^a	0.79 ± 0.01 ^b	n.d	1.16 ± 0.01 ^a
	Feruloylquinic acid	14.79	283, 330	369	55.37 ± 0.42 ^b	47.66 ± 0.39 ^c	59.65 ± 0.44 ^a	31.05 ± 0.18 ^b	24.61 ± 0.24 ^c	33.42 ± 0.37 ^a
	Caffeoylarbutin	17.20	288, 330	435	n.d	n.d	n.d	6.45 ± 0.04 ^a	3.42 ± 0.02 ^c	5.14 ± 0.05 ^b
	Dicaffeoylquinic acid	20.08	282, 329	517, 163	5.01 ± 0.05 ^a	4.05 ± 0.04 ^b	n.d	1.77 ± 0.02 ^a	0.93 ± 0.01 ^b	1.74 ± 0.01 ^a
Flavonols (quercetin derivatives)	Quercetin-rutinoside (Rutin)	15.35	263, 355	611, 303	44.91 ± 0.21 ^b	42.34 ± 0.19 ^c	49.83 ± 0.63 ^a	18.61 ± 0.19 ^b	11.45 ± 0.10 ^c	21.88 ± 0.19 ^a
	Quercetin-glucoside	16.20	263, 355	465, 303	1.42 ± 0.01 ^b	1.29 ± 0.01 ^c	2.37 ± 0.02 ^a	3.05 ± 0.03 ^a	2.23 ± 0.03 ^b	1.91 ± 0.02 ^c
	Quercetin-acetyl-rhamnoside	17.83	263, 356	493, 303	18.60 ± 0.16 ^a	12.67 ± 0.10 ^c	15.47 ± 0.14 ^b	6.10 ± 0.04 ^b	1.71 ± 0.01 ^c	8.01 ± 0.07 ^a
	Quercetin-arabinoside	18.69	262, 355	435, 303	1.55 ± 0.01 ^a	1.53 ± 0.01 ^a	1.39 ± 0.01 ^b	0.41 ± 0.01 ^b	0.07 ± 0.01 ^c	0.61 ± 0.01 ^a
	Quercetin-xyloside	18.98	262, 355	435, 303	1.47 ± 0.01 ^b	1.30 ± 0.01 ^c	1.53 ± 0.01 ^a	0.45 ± 0.01 ^b	0.05 ± 0.01 ^c	0.62 ± 0.01 ^a
	Quercetin-diglucoside	21.15	263, 355	628, 303	0.91 ± 0.01 ^c	1.42 ± 0.01 ^a	0.17 ± 0.01 ^b	3.11 ± 0.03 ^b	3.93 ± 0.05 ^a	1.12 ± 0.01 ^c
	Quercetin	21.88	261, 355	303	3.69 ± 0.03 ^a	3.26 ± 0.04 ^b	1.16 ± 0.06 ^c	4.78 ± 0.04 ^a	3.31 ± 0.02 ^b	2.61 ± 0.02 ^c
Anthocyanins	Cyanidin-glucoside	11.02	210, 517	449, 287	0.28 ± 0.01 ^a	0.29 ± 0.01 ^a	n.d	n.d	n.d	n.d
	Cyanidin-arabinoside	11.78	214, 517	419, 287	n.d	0.30 ± 0.01	n.d	n.d	n.d	n.d
	Cyanidin-acetyl-glucoside	14.28	218, 518	491, 287	0.33 ± 0.01 ^a	0.29 ± 0.01 ^b	n.d	n.d	n.d	n.d

Values (expressed as mean values ± SD, mg/g, n = 3) in the same row followed by different letters (a–c) indicate significant differences (p < 0.05) between the three different locations, individual for each type of species (one-way analysis of variance (ANOVA); multiple comparison test; Tukey multiple range test (p = 0.05); GraphPad Prism Version 8.0.1, Graph Pad Software, Inc., San Diego, CA, USA). VMT, V. myrtillus leaves from Turda; VMS, V. myrtillus leaves from Smida; VMB, V. myrtillus leaves from Borsa; VVIT, V. vitis-idaea leaves from Turda; VVIS, V. vitis-idaea leaves from Smida; VVIB, V. vitis-idaea leaves from Borsa; n.d, not detected.