Antioxidant capacity and UPLC-PDA ESI-MS polyphenolic profile of Citrus aurantium extracts obtained by ultrasound assisted extraction.

ABSTRACT: This study aimed to evaluate different pre-treatments and solvent ratios on the total phenolic content and antioxidant activity of Citrus aurantium (sour orange) peel extracted by ultrasound. A two-factor (2 × 3) factorial design was implemented, with fresh and dry peels as pre-treatment conditions, and water (100%), 50% aqueous ethanol (v/v) and 96% aqueous ethanol (v/v) as the solvents. The phenolic compounds were identified and quantified by ultra-performance liquid chromatography-photodiode array and electrospray ionisation-mass spectrometry, respectively. The compounds were partially purified by advanced automated flash purification. The results indicated that the maximal phenolic content (40.95 ± 3.44 mg gallic acid equivalents/g dry weight) was obtained when fresh sour orange

SUBMITTER: Ana CC 

PROVIDER: S-EPMC6233436 | biostudies-literature | 2018 Dec

REPOSITORIES: biostudies-literature