Dendrobium hancockii polysaccharides, structure characterization, modification, antioxidant and antibacterial activity

Purification and structural analysis of a novel polysaccharide from Rehmannia Radix Praeparata

“…Until now, the majority of reports on Rehmannia Radix Praeparata polysaccharides (RRPPs) were mostly about the extraction and separation methods and process optimization (Hu et al, 2021; Li et al, 2021), and some pharmacological activities. Polysaccharides are the main active ingredients contained in Rehmannia Radix Praeparata, which have antioxidant (Wang et al, 2022; Zhou et al, 2022) and antitumor activities (Fan et al, 2020; Xu et al, 2017), can also regulate blood sugar and blood fat, promote the proliferation (Wang et al, 2018) and differentiation of hematopoietic stem cells, and strengthen immunity (Kwak et al, 2018), but there is little information about the structure of polysaccharides.…”

Structure characterization of novel heteropolysaccharides from Pteridium revolutum with antioxidant and antiglycated activities

“…Plant polysaccharides have drawn considerable attention from the world because of their potential application value in various industries ( Sun et al, 2008 ). Previous works have demonstrated that polysaccharides possess essential pharmacological activities including antioxidant, antiglycated, anti-inflammatory, hypolipidemic, antimicrobial and immunoregulatory ( Chen et al, 2019 , Chen et al, 2023 , Long et al, 2022 , Song et al, 2019 , Wang et al, 2022 , Zhu et al, 2019 ). Polysaccharides isolated from the Pteridaceae family were also reported have antioxidant and immunomodulatory activity ( Xu et al, 2009 , Song et al, 2017 , Zhao et al, 2022 ).…”

Enhancement of physicochemical properties, antioxidant, antitumor, and anticoagulant activities via acetylation of Hypsizygus ulmarius polysaccharide

“…These findings demonstrated that the ABTS free radicals are significantly scavenged by native polysaccharides and their acetylated derivatives in a dose‐dependent manner. The results showed that Ac‐HUP1 had a better scavenging effect than HUP1 on ABTS free radicals, consistent with earlier results showing that acetylated polysaccharides have stronger ABTS scavenging capabilities (Subramanian & Ramani, 2020; Wang et al ., 2022).…”

“…Several fungi's bioactive components have attracted increasing interest in recent years as the idea of a healthy diet has grown in popularity. Polysaccharides are known to be significant active components in fungi, and they exhibit a wide range of biological properties, including immunomodulatory, antioxidant, anti‐tumour, hepatoprotective, hypolipidemic, and anticoagulant properties (Gunasekaran et al ., 2021a, 2021b; Garcia et al ., 2022; Nataraj et al ., 2022; Wang et al ., 2022). Many natural polysaccharides exhibit weak bioactivities, and thus, chemical modification of polysaccharides offers an approach to enhance their bioactivities by changing their structural and conformational properties (Wang et al ., 2018).…”