Capric

PVDF-co-HFP Kynarflex® (copolymer poly(vinylidene fluoride)-co-hexafluoropropylene) was purchased from Arkema (Colombes, France) and dissolved in N,N´-dimethylformamide (DMF) (p.a.) from P-LAB (Prague, Czech Republic). The caprylic, capric, and lauric acid, glycidol, and chromium acetate hydroxide were supplied by Sigma-Aldrich (St. Louis, MO, USA). All the chemicals were utilized as received without further purification. Both of the bacterial strains -Gram-positive cocci of Staphylococcus aureus ATCC 25923 and Gramnegative rods of Escherichia coli ATCC 25922 -were obtained from the Czech Collection of Microorganisms (CCM, Brno, Czech Republic).

Lipase B from C. antarctica (CAL B) immobilized on acrylic resin, Novozym ® 435, was purchased from Novozymes (Bagsvaerd, Denmark). L-ascorbic acid 99.7 % pure was purchased from Zorka, Šabac, Serbia. Oleic acid (Ph. Eur., NF pure) was purchased from AppliChem, Darmstadt, Germany. Saturated fatty acidsacetic, caproic, capric, myristic, and stearic, were obtained from Sigma-Aldrich Chemie Gmbh, Steinheim, Germany, all 98 % pure. 2,2-Diphenyl-1-picrylhydrazyl radical (DPPH) and ascorbyl palmitate (≥ 99%) were purchased from Sigma-Aldrich Chemie Gmbh, as well. Following solvents were used as reaction media: t-butanol (99 %, Sigma-Aldrich Chemie Gmbh, Steinheim, Germany), acetone (99.5 %, Zorka Pharma, Šabac, Serbia), acetonitrile (p.a., Kemika, Zagreb, Croatia), n-hexane (95-98.5 %, Carlo Erba Reagents, Milano, Italy), and isooctane (99.5 % pure, Centrohem, Stara Pazova, Serbia). Hydranal ® -solvent and Hydranal ® -titrant were purchased from Sigma-Aldrich Chemie Gmbh, Steinheim, Germany. HPLC analyses were carried out with methanol and acetonitrile obtained from JT Baker, SAD, and phosphoric acid purchased from Sigma-Aldrich Chemie Gmbh, Steinheim, Germany, all of HPLC grade. Zeolite molecular sieves (diameter 2-3 mm and 0.4 nm pores) were used as water adsorbents.