Use of Ultrasound in Enhancing Extraction of Health Functional Compounds

Date-pits contain many health functional components. However, these are very compact and tough biomaterials. Extracting health functional components from date-pits is a challenge. In this video, we are going to explain the enhanced extraction process of health functional compounds from date-pits by ultrasound. A total of 47 different phenolic compounds were identified, including 21 phenolic acids, 21 flavonoids, and 5 other polyphenols. Enhanced extraction by ultrasonic assisted in methanol solvent. The highest total phenolic content was found in ultrasonic-assisted date-pits extracted by ethanol, which is 18.53 mg GAE/g. In contrast, total polyphenol content of conventionally extracted date-pits ranged from 1.30 to 14.46 mg GAE/g. Extract also contained epicatechin (36.12 μg/g), coumaric acid (27.05 μg/g), p-hydroxybenzoic acid (21.03 μg/g), syringic acid (19.85 μg/g), and epicatechin gallate (11.67 μg/g).
Shi, L., Li, W., Rahman, M. S., Nasser Al-Habsi, N., Ashokkumar, M., Frank R. Dunshea, F. R., Suleria, H. A. R. 2023. Comparison of phenolic composition in date (Phoenix dactylifera L.) flesh and seeds extracted by an ultrasonic-assisted and conventional method. International Journal of Food Properties 26(2): 2939-2962.