ANTIOXIDANT EXTRACT FROM BROWN MACROALGAE AND METHOD FOR OBTAINING SAME

摘要

The invention relates to a method for obtaining antioxidant extracts from macroalgae using ultrasound-assisted continuous aqueous extraction. The process can be performed using fresh algae or dry algae, after resuspending same in water. A suspension of alga in water is prepared with a solid concentration of 10 % to 30 %. The mixture is fed to an ultrasonic breakdown system. The extract is filtered and lyophilised, obtaining total polyphenol concentrations of 62.4 mg eq. of phloroglucinol / g of lyophilizate with Bifurcaria bifurcata and 44 mg eq. of phloroglucinol / g of lyophilizate with Ascophyllum nodosum. The extract can be used as an ingredient in cosmetic and food formulations.