Bovine serum albumin fraction 5

All solvents used for UHPLC-DAD-ESI-MS, i.e., acetonitrile (99.9%, LC/MS grade) and water (LC/MS grade), were purchased from Thermo Fisher Scientific (Waltham, MA, USA). Petroleum ether (95% GC/MS grade, 40–65 °C) and n-alkanes (C₈–C₂₀) were purchased from Carlo Erba Reagents S.A.S. (Barcelona, Spain) and Fluka, Sigma-Aldrich (Burlington, MA, USA), respectively. Methanol (99.8%, HPLC grade) and water (HPLC grade) used for the extraction were purchased from Thermo Fisher Scientific (Waltham, MA, USA). HPLC reference standards rosmarinic (≥99% analytical standard) and carnosic acid (≥90%) were purchased from Extrasynthese (Genay Cedex, France), while luteolin 7-O-glucoside (≥95%) was from Phytolab (Vestenbergsgreuth, Germany). Bovine Serum Albumin (BSA) Fraction V (lyophilized powder >95%) was purchased from Pan Biotech (Aidenbach, Germany), 2-deoxy-d-ribose (>99%) from Alfa Aesar (Kandel, Germany), aminoguanidine bicarbonate salt (>98%) from Sigma-Aldrich (St. Louis, MO, USA), sodium azide (>99%) and trichloroacetic acid (TCA) (>99.5%, pharma grade) from PanReac AppliChem ITW Reagents (Barcelona, Spain). Anhydrous sodium sulphate (>99%) was purchased from Penta Chemicals (Prague, Czech Republic) while disodium hydrogen phosphate (>99%) and sodium dihydrogen phosphate dihydrate (>99%) were purchased from Merck (Kenilworth, NJ, USA).

Polyethylene terephthalate (PET) (CAS: 25038-59-9, Cat. no. 429252) granules, as well as deuterated chloroform (>99% grade) were obtained from Sigma Aldrich-Merck (St. Louis, MO, USA). Bovine serum albumin (BSA) fraction V was purchased from Pan-Biotech (Aidenbach, Germany), while sodium dodecyl sulfate (SDS, analytical grade) was from Serva (Heidelberg, Germany). Trifluoroacetic acid (TFA, ≥99.5%, Optima™ LC/MS grade) was obtained from Fisher Chemical (Oxford, UK). LACE6C low speed centrifuge 3672× g (COLO LAbExperts, Novo Mesto, Slovenia) and ultrasonic bath (Sonorex Super RK52, 230 V, 50/60 Hz) from Bandelin electronic GmbH & Co. KG (Berlin, Germany) were used. All sonication steps were done by continuous sonication at 35 kHz and HF peak power 60 W. ¹H NMR spectra were recorded with Varian/Agilent NMR 400 MHz. deuterated chloroform (CDCl₃) used for ¹H NMR (>99.9%) was from Sigma Aldrich-Merck (St. Louis, MO, USA). Chemical shifts are expressed in ppm, while TMS (tetramethylsilane) was used as an internal standard. Milli-Q water (Smart2Pure 3 UV/UF, Thermo Scientific, Waltham, MA, USA) was used for all experiments.