Optimization of a Green Ultrasound-Assisted Extraction of Different Polyphenols from Pistacia lentiscus L. Leaves Using a Response Surface Methodology.

ABSTRACT: Pistacia lentiscus leaves are used in several applications, thanks to their polyphenolic abundance. Thiswork aimed to characterize the polyphenols and to optimize the extraction conditions to shorten the time, decrease the consumption of solvent, and to maximize the yield of different classes of phenolics, which have diverse industrial applications. The variables were optimized by applying a Box-Behnken design. Galloyl and myricetin derivatives were the most abundant compounds, and two new tetragalloyl derivatives were identified by LC-MS/MS. According to the models, the maximum yields of polyphenols (51.3 ± 1.8 mg g^-1 DW) and tannins (40.2 ± 1.4 mg g^-1 DW) were obtained using 0.12 L g^-1 of 40% ethanol at 50 °C. The highest content of flavonoids (10.

SUBMITTER: Detti C 

PROVIDER: S-EPMC7692629 | biostudies-literature | 2020 Nov

REPOSITORIES: biostudies-literature