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The Establishment of Ultrasonic-Assisted Extraction for the Recovery of Phenolic Compounds and Evaluation of Their Antioxidant Activity from Morus alba Leaves.


ABSTRACT: Phenolic compounds of Morus alba leaves are bioactive compounds with beneficial properties for human health. Therefore, in this study, an optimization of ultrasonic assisted extraction by Box-Behnken design was used for the first time to optimize factors such as the percentage of ethanol, ratio solvent/sample (v/w) and extraction time to reach the highest phenolic compound amounts (evaluated by HPLC-MS) while also evaluating in vitro antioxidant activity using DPPH, ABTS and FRAP assays. The optimal extraction conditions were 40% ethanol, 1/400 (w/v) and 35 min. Applying these optimal conditions, which were identified and quantified by HPLC-MS, resulted in the extraction of 21 phenolic compounds. According to these results, the main phenolic compounds in Morus alba leaves are the phenolic glycoside and phenolic acid named protocatechuic acid-glucoside and caffeoylquinic. In addition, Morus alba leaf extract contains flavonols such quercetin-3-O-6-acetylglucoside and rutin, which represent more than 7% of its total phenolic content.

SUBMITTER: Martin-Garcia B 

PROVIDER: S-EPMC8834592 | biostudies-literature | 2022 Jan

REPOSITORIES: biostudies-literature

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The Establishment of Ultrasonic-Assisted Extraction for the Recovery of Phenolic Compounds and Evaluation of Their Antioxidant Activity from <i>Morus alba</i> Leaves.

Martín-García Beatriz B   Aznar-Ramos María José MJ   Verardo Vito V   Gómez-Caravaca Ana María AM  

Foods (Basel, Switzerland) 20220124 3


Phenolic compounds of <i>Morus alba</i> leaves are bioactive compounds with beneficial properties for human health. Therefore, in this study, an optimization of ultrasonic assisted extraction by Box-Behnken design was used for the first time to optimize factors such as the percentage of ethanol, ratio solvent/sample (<i>v</i>/<i>w</i>) and extraction time to reach the highest phenolic compound amounts (evaluated by HPLC-MS) while also evaluating in vitro antioxidant activity using DPPH, ABTS and  ...[more]

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