Advanced polysaccharides extraction techniques of Adriatic Sea algae

doctoral thesis

• Title (croatian): Napredni postupci izolacije polisaharida iz algi Jadranskoga mora
• Author: Ana Dobrinčić
• Mentor: Verica Dragović-Uzelac (mentor)
• Committee member: Božidar Šantek (predsjednik povjerenstva)
• Committee member: Ivona Elez Garofulić (član povjerenstva)
• Committee member: Marin Roje (član povjerenstva)
• Granter: University of Zagreb; Faculty of Food Technology and Biotechnology; (Department of Food Engineering); (Laboratory for drying Technologies and monitoring of biologically active compounds); Zagreb
• Defense date and country: 2022-07-26, Croatia
• Scientific / art field, discipline and subdiscipline: BIOTECHNICAL SCIENCES; Food Technology
• Universal decimal classification (UDC): 58 - Botany

Abstract

Fucoidans, sulfated polysaccharides from the brown algae Fucus virsoides and Cystoseira barbata, show a wide range of biological activities (antioxidant, antibacterial, and antifungal) which depend on their chemical structure (sulfate group, fucose and uronic acid content, monosaccharide composition, molecular weight) and are related to the algal species, extraction technique and parameters, as well as pre-treatment used to remove interfering compounds. In addition to a higher yield compared to the conventional technique, the application of advanced extraction techniques (microwave-assisted extraction - MAE and pressurised liquid extraction - PLE) significantly reduced the extraction time.

Abstract (croatian)

Fukoidani, sulfatirani polisaharidi iz smeđih algi Fucus virsoides i Cystoseira barbata pokazuju široki raspon bioloških aktivnosti (antioksidacijsko, antibakterijsko i antifungalno djelovanje) koje ovise o njihovoj kemijskoj strukturi (udio sulfatnih grupa, fukoze, uronskih kiselina, sastav monosaharida, molekulska masa) i povezani su s vrstom alge, tehnikom i parametrima ekstrakcije te korištenim pred-tretmanom za uklanjanje interferirajućih spojeva. Uz veće prinose u odnosu na konvencionalnu tehniku, primjenom naprednih tehnika ekstrakcije (ekstrakcija potpomognuta mikrovalovima – MAE i ubrzana ekstrakcija otapalima pri povišenom tlaku – PLE) vrijeme ekstrakcije je značajno skraćeno.

• Keywords: polysaccharides; fucoidan; algae; Fucus virsoides; Cystoseira barbata; advanced extraction techniques
• Keywords (english): polisaharidi; fucoidan; alge; Fucus virsoides; Cystoseira barbata; napredne tehnike ekstrakcije
• Language: english
• URN:NBN: urn:nbn:hr:159:134039
• Promotion: 2022
• Study programme: Title: Postgraduate PhD Study in Nutrition; Study programme type: university; Study level: postgraduate; Academic / professional title: doktor/doktorica znanosti, područje biotehničkih znanosti, polje nutricionizam (doktor/doktorica znanosti, područje biotehničkih znanosti, polje nutricionizam)
• Type of resource: Text
• Extent: 164 str. ; 30 cm
• File origin: Born digital
• Access conditions: Open access
• Created on: 2022-11-11 09:08:02