BV was obtained from a local market in Isfahan, Iran. Pomegranate
(Malas Isfahan cultivar) was supplied by Isfahan Agricultural
Research Organization. All chemicals and solvents used in this
study were analytical grade commercial products. Sodium hydroxide,
hydrochloric acid (37%), glycerol (about 87%),
FolineCiocalteau reagent, tannic acid, sodium carbonate and
methanol were purchased from Merck Chemical Company