Chlorogenic acid

Ferulic acid (99%) was purchased from Sigma Aldrich (St. Louis, MO, USA). Ascorbic acid and quercetin (≤100%) were purchased from FUJIFILM Wako Pure Chemical Corporation (Osaka, Japan). Caffeic acid (≥98%), curcumin (100%), hesperidin (90%), rutin (95.0–101.5%), and triiodothyronine (T₃) were purchased from Nacalai Tesque, Inc. (Kyoto, Japan). Gallic acid (≥98%), chlorogenic acid (≥95%), ellagic acid (≥95%), sesamin (≥95%), epigallocatechin-3-gallate (≥96%), genistein (≥98%), daidzein (≥95%), luteolin (≥98%), theaflavin (≥98%), isoquercetin (98%), and morin (100%) were purchased from Cayman Chemical Company (Ann Arbor, MI, USA). Resveratrol (>99.0%), fisetin (>96.0%), isorhamnetin (>95.0%), and troxerutin (90%) were purchased from Tokyo Chemical Industry Co., Ltd. (Tokyo, Japan). Cyanidin chloride (99%) was purchased from Nagara Science Co. Ltd. (Gifu, Japan). Apigenin (≥98%) was purchased from LKT Laboratories, Inc. (St. Paul, MN, USA). Kaempferol (98%), myricetin (98%), and naringin (98%) were purchased from BDL Pharmatech Ltd. (Shanghai, China). Hyperoside (90–100%) was purchased from Toronto Research Chemicals Inc. (Toronto, ON, Canada). Neohesperidin (≥98%) was purchased from Chem-Impex International, Inc. (Wood Dale, IL, USA). All other chemicals were commercially available and had the highest possible purity.

Fresh raspberries (R. idaeus, cv. Remontant, from Domeniul Cerbi, Marginea, Suceava, Romania) and multifloral honey (RomHoney Group, Iași, Romania) were used in this work. The raspberries were dried by lyophilization and were ground to a fine powder using an electrical grinder. The following chemicals were used: pharmaceutical ethanol 96% (Chimopar Srl, Bucharest, Romania), D(+)-Glucose anhydrous extra pure, D(−)-Fructose, extra pure, D(+) Saccharose, reagent grade (Scharlau, Barcelona, Spain) Trolox 97% (Acros Organics, Thermo Fisher Scientific, Pittburghs, PA, USA), Gallic acid, 2,2-Diphenyl-1-picrylhydrazyl (Sigma-Aldrich, Merck Group, Darmstad, Germany), 2,2′-Azino-bis (3-ethylbenzothiazo-line-6-sulfonic acid) diammonium salt, 98%, 2,4,6-tri (2-pyridyl-1,3,5-triazine) 98% (Alfa Aesar, Kandel, Germany), Folin Ciocalteu’s phenol reagent, Iron chloride (III) (Merck, Darmstadt, Germany), hydrochloric acid, acetic acid (Chimopar Srl, Bucharest, Romania), sodium acetate (Scharlau, Barcelona, Spain), HPLC standards: ferulic acid, p-coumaric acid, caffeic acid, quercetin dihydrate (Sigma-Aldrich, Merck Group, Darmstad, Germany), syringic acid, luteolin, (+)-rutin trihydrate, (Alfa Aesar, Haverhill, MA, USA), chlorogenic acid, myricetin (Cayman Chemical, Ann Arbor, MI, USA), apigenin, (−) epicatechin (Roth, Karlsruhe, Germany), and kaempferol (Cayman Chemical, Ann Arbor, MI, USA).