RT Dissertation/Thesis
T1 Ultrasound-Assisted Extraction of Biopolymers from Ascophyllum nodosum Brown Seaweeds: Bioactivity and Enzyme Inhibition of Phlorotannins assessment
A1 Gisbert Verdú, Mauro
K1 Extraction
K1 phlorotannins
K1 seaweed
K1 alginate
K1 polyphenols
K1 bioactivity
K1 enzyme inhibition
AB Ascophyllum nodosum seaweeds was used as source of biopolymers. Theultrasoundassisted extraction was used to obtain extracts with high content of bioactivecompounds with high antioxidant and enzyme inhibition activities. The physicochemical characterization of theseextracts showed a high content ofphlorotannins along with other substances (carbohydrates and uronic acids), being necessary subsequentpurification steps. By means of gel chromatography and dialysis, extracts with an improved bioactivity wereobtained. Extracts with the highest bioactivities were significant inhibitors of αamylase andαglucosidase digestive enzymes. Finally, alginates with modulated properties were also obtained improvingthe integral use of the seaweeds, after the extraction of phlorotannins. Results indicated that extracted biopolymersfrom Ascophyllum nodosum can be employed in glutenfree foods for celiac people and functional formulations.
YR 2022
FD 2022
LK http://hdl.handle.net/10347/29915
UL http://hdl.handle.net/10347/29915
LA eng
DS Minerva
RD 24 abr 2026