Preparation of Aqueous Propolis Extracts Applying Microwave-Assisted Extraction

Water-based propolis extracts usually contain up to 10-fold lower quantities of active ingredients due poor solubility in water bioactive compounds when compared with ethanol-based extracts. Since are limited use, water-based preferred nowadays. The application alternative extraction techniques should be evaluated improve efficiency. Aqueous were prepared using purified and propylene glycol, 2-hydroxypropyl-beta-cyclodextrin sodium bicarbonate aqueous solutions. A microwave-assisted method was applied cycles. total concentration hydroxycinnamic acids extract produced by four cycles determined 1502.1 ± 130.1 μg/mL 20% 10% 5% solutions, increasing the 1.6, 1.7 1.9-fold, respectively. An procedure repeating reliably increased quantity Similarly, presence 2-hydroxypropyl-β-cyclodextrin