Structural feature and antioxidant activity of low molecular weight laminarin degraded by gamma irradiation

Effect of γ-irradiation on structure and nutraceutical potential of β-d-glucan from barley (Hordeum vulgare)

“…The carbonyl groups might be produced by breaking the glycosidic bond in ␤-d-glucan by the hydroxyl radicals generated by gamma irradiation. Similar increase in inhibition of lipid peroxidation, as a result of irradiation has been reported in polysaccharides such as laminarin [48] and chitosan and its derivatives [39]. This antioxidant capacity may also be linked to the presence of free -OH groups in this polysaccharide.…”

The Effect of Irradiation on Bioactive Compounds in Plant and Plant Products

“…chitosan and laminarin) possesses antimicrobial or antitumour activity (Srinvastava and Kulshŕestha, 1989;Miyanishi et al, 2003;Wasser, 2003;Choi et al, 2011). The biological activity of the polysaccharide depended on the molar mass, type and number of functional groups in the structure (Voegeli et al, 1993;Qi, et al, 2005;Choi et al 2011). Low molecular weight polysaccharides had more biological activity than high molecular weight polysaccharides.…”

“…Byun et al (2008) found that the average molecular weight of ␤-glucan decreased as the irradiation dose increased ( Figure 14.5). Similarly, Choi et al (2011) andFeng et al (2008) studied laminarin and chitosan, respectively. Thus, gamma irradiation could be used to prepare low molecular weight polysaccharide.…”

“…As the process is simple, it is a better method when compared to using enzyme. Moreover, the low molecular weight polysaccharides produced had many carboxyl groups (Choi et al, 2011) and high antioxidant activity (Figure 14.6). …”

Effect of biopolymers on the characteristics and cytocompatibility of biocomposite nanofibrous scaffolds

“…According to a previous report, laminarin exhibits excellent antioxidative activities, which can positively influence cell viability. 34 However, the effect of laminarin on cell growth is lower than that of gelatin. Cell morphology and the interaction between cells and nanofibers were also observed during the incubation period.…”