Extraction, structure analysis and antioxidant activity of
            <i>Sibiraea laevigata (L.)</i>
            Maxim polysaccharide

Yang, Xuhua; Yang, Jutian; Liu, Honghai; Ma, Zhongren; Guo, Penghui; Chen, Hong; Gao, Dandan

doi:10.1080/10942912.2022.2125013

Cited by 3 publications

(4 citation statements)

References 46 publications

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“…The carbonyl absorption peak is a strong C=O stretching absorption band in the 1900–1600 cm-1 region, and I01-2 and I01-4 each have an absorption peak at 1653 and 1632 cm −1 , respectively, corresponding to the characteristic peak of C=O and indicating the presence of uronic acid [ 43 ]. Moreover, the absorption peaks at 1416 was attributed to the stretching vibrations of carboxylic groups (COO-), which indicated that the purified I01-4 was acidic polysaccharides, and the locations of these peaks was similar to the study of Sibiraea laevigata (L.) Maxim polysaccharides by FT-IR [ 44 ]. The 1260 cm −1 of I01-4 were assigned to O-H deformation vibrations [ 45 ].…”

Section: Resultsmentioning

confidence: 53%

Characterization of Novel Exopolysaccharides from Enterococcus hirae WEHI01 and Its Immunomodulatory Activity

Jia

Wei

et al. 2022

Foods

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Exopolysaccharide (EPS) from probiotic Enterococcus hirae WEHI01 was isolated and purified by anion exchange chromatography and gel chromatography, the results of which show that the EPS consists of four fractions, namely I01-1, I01-2, I01-3, and I01-4. As the main purification components, I01-2 and I01-4 were preliminarily characterized for their structure and their immunomodulatory activity was explored. The molecular weight of I01-2 was 2.28 × 104 Da, which consists mainly of galactose, and a few other sugars including glucose, arabinose, mannose, xylose, fucose, and rhamnose, while the I01-4 was composed of galactose only and has a molecular weight of 2.59 × 104 Da. Furthermore, the results of an evaluation of immunomodulatory activity revealed that I01-2 and I01-4 could improve the viability of macrophage cells, improve phagocytosis, boost NO generation, and encourage the release of cytokines including TNF-α and IL-6 in RAW 264.7 macrophages. These results imply that I01-2 and I01-4 could improve macrophage-mediated immune responses and might be useful in the production of functional food and medications.

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Section: Resultsmentioning

confidence: 53%

Characterization of Novel Exopolysaccharides from Enterococcus hirae WEHI01 and Its Immunomodulatory Activity

Jia

Wei

et al. 2022

Foods

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“…Glucuronide with a content of 108.08 is composed of Gal‐UA and Glc‐UA. The ratio of Ara, Glc, and Gal‐UA for purified APs was 22.36:34.46:31.32, which indicates that the purified APs are mainly composed of acidic polysaccharides (Yang, Yang, et al., 2022; Zhu et al., 2022).…”

Section: Resultsmentioning

confidence: 96%

“…The solution was first filtered through a microporous membrane (0.45 µm) and purified by 100, 30, and 10 kDa ultrafiltration membrane successively. Finally, the polysaccharide with relative molecular weight <10 kDa was obtained and lyophilized before further use (Yang, Yang, et al., 2022). Polysaccharide content was measured by the phenol–sulfuric acid method with d ‐glucose as the standard.…”

Section: Methodsmentioning

confidence: 99%

“…The hydroxyl (·OH) radical scavenging activity (Yang, Yang, et al., 2022): The sample solution (0.5 mL) containing the same Cur content was mixed with 0.5 mL of salicylic acid ethanol (6 mM) solution, 0.5 mL of ferrous sulfate (6 mM) solution, 0.5 mL of H 2 O 2 (2.4 mM), and 2 mL of deionized water (for CABNs) or anhydrous ethanol (for free Cur). The mixture solution was incubated at 37°C for 30 min.…”

Section: Methodsmentioning

confidence: 99%

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Apricot polysaccharides as new carriers to make curcumin nanoparticles and improve its stability and antibacterial activity

Zhou,

Huang,

et al. 2024

Journal of Food Science

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Apricot polysaccharides (APs) as new types of natural carriers for encapsulating and delivering active pharmaceutical ingredients can achieve high‐value utilization of apricot pulp and improve the solubility, the stability, and the antibacterial activity of insoluble compounds simultaneously. In this research, the purified APs reacted with bovine serum albumin (BSA) by the Maillard reaction, and with d‐α‐tocopheryl succinate (TOS) and pheophorbide A (PheoA) by grafting to fabricate two materials for the preparation of curcumin (Cur)‐encapsulated AP–BSA nanoparticles (CABNs) and Cur‐embedded TOS–AP–PheoA micelles (CTAPMs), respectively. The biological activities of two Cur nano‐delivery systems were evaluated. APs consisted of arabinose (22.36%), galactose (7.88%), glucose (34.46%), and galacturonic acid (31.32%) after the optimized extraction. Transmission electron microscopy characterization of CABNs and CTAPMs displayed a discrete and non‐aggregated morphology with a spherical shape. Compared to the unencapsulated Cur, the release rates of CABNs and CTAPMs decreased from 87% to 70% at 3 h and from 92% to 25% at 48 h, respectively. The antioxidant capacities of CABNs and CTAPMs were significantly improved. The CTAPMs exhibited a better antibacterial effect against Escherichia coli than CABNs due to the synergistic photosensitive effect between Cur and PheoA.

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Ultrasonic-assisted aqueous two-phase extraction of polysaccharides from the fruits of Ilex cornuta (Lindl. Et Paxt.): Process optimization, structural characterization and antioxidant activity study

Chen

Zhu

et al. 2023

Microchemical Journal

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Extraction, structure analysis and antioxidant activity of Sibiraea laevigata (L.) Maxim polysaccharide

Cited by 3 publications

References 46 publications

Characterization of Novel Exopolysaccharides from Enterococcus hirae WEHI01 and Its Immunomodulatory Activity

Characterization of Novel Exopolysaccharides from Enterococcus hirae WEHI01 and Its Immunomodulatory Activity

Apricot polysaccharides as new carriers to make curcumin nanoparticles and improve its stability and antibacterial activity

Ultrasonic-assisted aqueous two-phase extraction of polysaccharides from the fruits of Ilex cornuta (Lindl. Et Paxt.): Process optimization, structural characterization and antioxidant activity study

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