Published 2025

Read in Norwegian

Publication details

Journal : Lebensmittel-Wissenschaft + Technologie , vol. 224 , p. 1–9 , 2025

International Standard Numbers :
Printed : 0023-6438
Electronic : 1096-1127

Publication type : Academic article

Contributors :

Research areas

Food processing technologies

Bioprocessing

If you have questions about the publication, you may contact Nofima’s Chief Librarian.

Kjetil Aune
Chief Librarian
kjetil.aune@nofima.no

Summary

Palmaria palmata is gaining commercial interest in the northern hemisphere as a source of nutrients and bioactive compounds. However, the complex cell wall limits digestibility and extraction efficiency. This study investigated the use of ultrasound (US) and enzyme-assisted extraction (EAE), individually and in combination, to enhance the extraction of valuable components from P. palmata and to reduce iodine content. The US treatment was tested at two energy inputs (2.0 W/g and 9.1 W/g) alongside EAE using the multifunctional carbohydrase mixture Depol 793 EAE effectively degraded the cell wall components of P. palmata, resulting in a solid fraction rich in proteins. In contrast, the liquid fraction was enriched with sugars (xylose, glucose and galactose) and ash. In contrast, US alone did not affect extraction, and no additive or synergistic effects were observed when combining US with EAE. No significant reduction in iodine was obtained for any of the treatments, ranging from 10 % to 18 %. This study confirms that EAE is a promising approach for nutrient extraction from P. palmata, and future studies should explore additional enzymes and optimize US conditions to further improve extraction efficiency, in addition to including analysis of toxic elements to identify potential challenges for safe consumption.

Topics associated with the publication

Secret Link