Ultrasonic treatment as a modern technique to facilitate the extraction of phenolic compounds from organic sunflower seed cakes

Author:

Ali Mostafa12ORCID,Khalil Mahmoud34,Badawy Waleed Z.1,Hellwig Michael25ORCID

Affiliation:

1. Department of Food Technology, Faculty of Agriculture Kafrelsheikh University Kafr el‐Sheikh Egypt

2. Chair of Special Food Chemistry Technische Universität Dresden Germany

3. Institute of Nutritional Science University of Potsdam Potsdam Germany

4. Department of Nutrition and Food Science, Faculty of Home Economics Menoufia University Shebin El Kom Egypt

5. Institute of Food Chemistry Technische Universität Braunschweig Braunschweig Germany

Abstract

AbstractBACKGROUNDThree different organic sunflower seed cakes, produced from seeds differing in the content of their hulls, were extracted by two different extraction methods – conventional extraction (CE) and ultrasound‐assisted extraction (UAE). The total phenolic compound (TPC) content of the extracts was evaluated using Folin–Ciocâlteu reagent (FCR) and high‐performance liquid chromatography (HPLC). The antioxidant capacity of extracts was evaluated with the Trolox equivalent antioxidant capacity (TEAC) and 2,2‐diphenyl‐1‐picrylhydrazyl (DPPH) assays.RESULTSThe results showed that both extracts displayed high TPC content and antioxidant capacity. The UAE method showed significantly higher TPC content and antioxidant capacity values than CE. Individual phenolic compounds such as chlorogenic acid (CGA) isomers (3‐, 4‐ and 5‐O‐caffeoylquinic acids), di‐CGA isomers, and feruloylquinic and coumaroylquinic acids were identified according to their exact masses by HPLC coupled to time‐of‐flight mass spectrometry.CONCLUSIONThe results revealed that the UAE method could be used effectively to facilitate the extraction of phenolic compounds from sunflower seed cake. © 2023 The Authors. Journal of The Science of Food and Agriculture published by John Wiley & Sons Ltd on behalf of Society of Chemical Industry.

Funder

Deutsche Forschungsgemeinschaft

Kafrelsheikh University

Publisher

Wiley

Subject

Nutrition and Dietetics,Agronomy and Crop Science,Food Science,Biotechnology

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