title: Biological properties of water-soluble polysaccharides and hemicelluloses from almond gum.
abstract: The aim of this work was to investigate the biological activities of almond gum polysaccharides (AGP) and almond gum hemicelluloses (AGH). Almond gum was first fractionated into AGP and AGH using hot water and alkaline solution, respectively. The antioxidant activities of both extracted polymers revealed interesting free radical scavenging activities through DPPH test (IC50AGP=4mg/mL, IC50AGH=6mg/mL), 2,2'-azinobis[3-ethylbenzthiazoline]-6-sulfonic acid (ABTS) radical scavenging activity test (% inhibition ABTS=40.53±1.99% and 87.14±1% for AGP and AGH, respectively), reducing power capacity (RPAGP=20mg/mL, RPAGH=1.1mg/mL), and β-carotene bleaching inhibition (IC50AGP=18.5mg/mL, IC50AGH0.8mg/mL). Antibacterial activities of both polymers were tested against pathogenic strains showing interesting growth inhibition. Moreover, AGP and AGH were also efficient to inhibit ACE; the angiotensin converting enzyme (at 1mg/mL, the ACE inhibitory activity was 75.81±1.53% and 90.86±2.47%, respectively). The results obtained in this study demonstrate the attractive biological properties of fractions obtained from almond gum and their potential to be used in numerous food and non-food applications.
authors.affiliation: Laboratoire d'amélioration des plantes et valorisation des agroressources (LAPVA), Ecole Nationale d'Ingénieurs de Sfax, P.O. Box 1173, 3038, Sfax University, Tunisia. Electronic address: fatma.bouaziz22@yahoo.fr.
authors.forename: Fatma
authors.initials: F
authors.lastname: Bouaziz
authors.affiliation: Sorbonne Universités, Université de Technologie de Compiègne, Laboratoire Transformations Intégrées de la Matière Renouvelable (UTC/ESCOM, EA 4297 TIMR), Centre de Recherche de Royallieu, CS 60319, 60203 Compiègne Cedex, France.
authors.forename: Mohamed
authors.initials: M
authors.lastname: Koubaa
authors.affiliation: Laboratoire d'amélioration des plantes et valorisation des agroressources (LAPVA), Ecole Nationale d'Ingénieurs de Sfax, P.O. Box 1173, 3038, Sfax University, Tunisia.
authors.forename: Rhoudha
authors.initials: R
authors.lastname: Ellouz Ghorbel
authors.affiliation: Laboratoire d'amélioration des plantes et valorisation des agroressources (LAPVA), Ecole Nationale d'Ingénieurs de Sfax, P.O. Box 1173, 3038, Sfax University, Tunisia; Common Service Unit of Bioreactor Coupled with an Ultrafilter, National School of Engineering, P.O. Box 1173, 3038, Sfax University, Tunisia.
authors.forename: Semia
authors.initials: S
authors.lastname: Ellouz Chaabouni
mesh_terms: D000806:Angiotensin-Converting Enzyme Inhibitors / Q000737:chemistry / Q000494:pharmacology; D000900:Anti-Bacterial Agents / Q000737:chemistry / Q000494:pharmacology; D000959:Antihypertensive Agents / Q000737:chemistry / Q000494:pharmacology; D000975:Antioxidants / Q000737:chemistry / Q000494:pharmacology; D001419:Bacteria / Q000187:drug effects; D007703:Peptidyl-Dipeptidase A / Q000378:metabolism; D053149:Plant Gums / Q000737:chemistry*; D011134:Polysaccharides / Q000737:chemistry* / Q000494:pharmacology*; D000068181:Prunus dulcis / Q000737:chemistry*; D012995:Solubility; D014867:Water / Q000737:chemistry*; D019207:beta Carotene / Q000737:chemistry
chemical_list: D000806:Angiotensin-Converting Enzyme Inhibitors; D000900:Anti-Bacterial Agents; D000959:Antihypertensive Agents; D000975:Antioxidants; D053149:Plant Gums; D011134:Polysaccharides; D019207:beta Carotene; D014867:Water; C007916:hemicellulose; D007703:Peptidyl-Dipeptidase A
keywords: Almond gum; Biological properties; Polysaccharides