Ultrasound-Assisted Extraction of Applewood Polyphenols at Lab and Pilot Scales

Overview

Journal Foods

Specialty Biotechnology

Date 2023 Sep 9

PMID 37685082

Authors

Hannes Withouck

Axel Paelinck

Imogen Foubert

Ilse Fraeye

Affiliations

Soon will be listed here.

Abstract

This study focused on the extraction of polyphenols from applewood using ultrasonic-assisted extraction (UAE). First, the influence of solvent composition and mass-volume (m:v) ratio on the extraction yield was studied at a lab scale (200 mL). Overall, a ratio of 1:33 (m:v) resulted in a higher yield of polyphenols. Furthermore, both a higher yield of polyphenols and higher antioxidant capacity were detected in the extracts produced in the presence of a 30 / % ethanol mixture compared to pure water; a further increase in ethanol did not improve the extraction yield. Second, under the optimal conditions (30 / % ethanol-water; 1:33 and 1:20 (m:v)), the UAE technique was applied at a pilot scale (100 L). At 1:33 (m:v), the polyphenol yield was lower at the pilot scale compared to the lab scale; by contrast, at 1:20 (m:v), production at the pilot scale resulted in a higher yield compared to the lab scale. To identify and quantify individual polyphenols, HPLC-PDA analyses were performed. Phloridzin appears to be the major identified compound. Finally, the UAE process was compared to a conventional solid-liquid extraction technique, showing that a significantly higher yield could be obtained with UAE.

Citing Articles

Green Approaches for the Extraction of Banana Peel Phenolics Using Deep Eutectic Solvents.

Cegledi E, Dobroslavic E, Pedisic S, Magnabosca I, Zoric M, Pavic R Molecules. 2024; 29(15).

PMID: 39125075 PMC: 11314314. DOI: 10.3390/molecules29153672.

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