Biological properties of water-soluble polysaccharides and hemicelluloses from almond gum

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• 作者：Fatma Bouaziz^a ; ^{fatma.bouaziz22@yahoo.fr} ; Mohamed Koubaa^b ; Rhoudha Ellouz Ghorbel^a ; Semia Ellouz Chaabouni^a ; ^c
• 关键词：Almond gum ; Polysaccharides ; Biological properties
• 刊名：International Journal of Biological Macromolecules
• 出版年：2017
• 出版时间：February 2017
• 年：2017
• 卷：95
• 期：Complete
• 页码：667-674
• 全文大小：1333 K
• 卷排序：95

文摘

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 (IC50 AGP = 4 mg/mL, IC50 AGH = 6 mg/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 = 20 mg/mL, RPAGH = 1.1 mg/mL), and β-carotene bleaching inhibition (IC50AGP = 18.5 mg/mL, IC50AGH 0.8 mg/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 1 mg/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.