Oleanolic and ursolic acid

Acetonitrile, formic acid, methanol, betulinic, oleanolic and ursolic acid, ABTS (2,2′-azinobis(3-ethylbenzothiazoline-6-sulfonic acid), 6-hydroxy-2,5,7,8-tetramethylchroman -2-carboxylic acid (Trolox), acetic acid, and phloroglucinol were purchased from Sigma-Aldrich (Steinheim, Germany). (−)-Epicatechin, (+)-catechin, chlorogenic acid, neochlorogenic acid, cryptochlorogenic acid, dicaffeic acid, procyanidin B2, p-coumaric acid, quercetin-3-O-galactoside, quercetin-3-O-rhamnoside, caffeic acid, caftaric acid, galloyl acid, and luteolin-3-O-galactoside were purchased from Extrasynthese (Lyon, France).

Acetonitrile, formic acid, methanol, DPPH (1,1-diphenyl-2 picrylhydrazyl radical), Trolox (6-hydroxy-2,5,7,8-tetramethylchroman-2-carboxylic acid), TPTZ (2,4,6-tri(2-pyridyl)-s-triazine), acetic acid, phloroglucinol, arbutin, caffeic acid, betulinic, oleanolic and ursolic acid, fructose, glucose, sorbitol and sucrose, and malic, oxalic, citric, shikimic, succinic, and fumaric acids were purchased from Sigma-Aldrich (Steinheim, Germany). Quercetin 3-O-glucoside, kaempferol 3-O-glucoside, cyanidin 3-O-glucoside, isorhamnetin 3-O-glucoside, apigenin 7-O-glucoside, chlorogenic, quinic, p-coumaric and ferulic acids, (+)-catechin, and procyanidin B2 were purchased from Extrasynthese (Lyon, France). Sodium hydroxide (CAS 1310-73-2), iodine (CAS 7553-56-2), and potassium iodide (CAS 7681-11-0) were purchased from CHEMPUR (Piekary Slaskie, Poland).

Acetonitrile, formic acid, methanol, all-trans-β-carotene, α-carotene, all-trans-lutein, neoxanthin, violaxanthin, antheraxanthin, β-cryptoxanthin, chlorophyll a, betulinic, oleanolic and ursolic acid, ABTS (2,2′-azinobis(3-ethylbenzothiazoline-6-sulfonic acid), 6-hydroxy-2,5,7,8-tetramethylchroman-2-carboxylic acid (Trolox), 2,4,6-tri(2-pyridyl)-s-triazine (TPTZ), methanol acetic acid, and phloroglucinol were purchased from Sigma-Aldrich (Steinheim, Germany). (−)-Epicatechin, (+)-catechin, procyanidin A2 and B2 chlorogenic acid, neochlorogenic acid, cryptochlorogenic acid, di-caffeic quinic acid, p-coumaric acid, 4-caffeoylquinic, kampferol-3-galactoside, quercetin-3-O-rutinoside, quercetin-3-O-galactoside, quercetin-3-O-glucoside, quercetin-3-O-arabinoside, quercetin-3-O-xyloside, quercetin-deoxyhexo-hexoside caffeic acid, cyanidin-3-O-galactoside, cyanidin-3-O-glucoside, cyanidin-3-O-arabinoside, and cyanidin-3-O-xyloside were purchased from Extrasynthese (Lyon, France). Acetonitrile for ultra-phase liquid chromatography (UPLC; Gradient grade) and ascorbic acid were purchased from Merck (Darmstadt, Germany).