Preparation, characterization, stability and bioactivity of fermented Tremella polysaccharide-Fe3+ complex

Wei, Yashu; Jiang, Dunqing; He, Yan; Zhang, Hua; Ma, Xia; Chen, Shiwen

doi:10.1016/j.lwt.2024.115775

LWT

2024

DOI: 10.1016/j.lwt.2024.115775

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Preparation, characterization, stability and bioactivity of fermented Tremella polysaccharide-Fe3+ complex

Yashu Wei,

Dunqing Jiang,

Yan He

et al.

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Cited by 7 publications

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Study of Lactobacillus plantarum coated with Tremella polysaccharides to improve its intestinal adhesion

Zhu,

Tang,

Wang

et al. 2024

J Sci Food Agric

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BackgroundThe adhesion of probiotics to the intestine is crucial to their probiotic function. Tremella polysaccharides (TPS) (with sodium casein) have shown the potential in previous studies to encapsulate probiotics and protect them in the simulated gastrointestinal tract. This paper further explored the effect of TPS (with sodium casein) on the adhesion of probiotics.ResultsLactobacillus plantarum was coated in different proportions in TPS and sodium casein and then freeze‐drying. The rheological properties of the mixture of probiotics powder and mucin solution were determined by static and dynamic rheological analysis. Aqueous solutions of probiotics powder and mucin mixture exhibited pseudoplastic fluid rheological properties. The higher the proportion of TPS content, the higher the apparent viscosity and yield stress. The mixed bacterial powder and mucin fluid displayed certain thixotropy and obeyed the Herschel‐Bulkley model. It indicated that TPS increased the bio‐adhesive force of probiotics powder and mucin. When using TPS as the only carbon source, the adhesion of L. plantarum to Caco‐2 cells increased by 228% compared to glucose in vitro. In addition, 12 proteins with adhesion function were detected in the whole‐cell proteome of L. plantarum. Among them, 10 proteins with adhesion function were abundant when grown with TPS as a carbon source.ConclusionTherefore, TPS possess prebiotic properties and can promote the intestinal adhesion of L. plantarum.This article is protected by copyright. All rights reserved.

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Study of Lactobacillus plantarum coated with Tremella polysaccharides to improve its intestinal adhesion

Zhu,

Tang,

Wang

et al. 2024

J Sci Food Agric

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Preparation, Structural Characterization, and Biological Activity of Selenated Potato Resistant Starch

Huang,

Dou,

Xiong

et al. 2024

Starch Stärke

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This study develops selenized potato resistant starch (P‐RS4·Se) from Enshi potato starch to enhance bioactivity. First, the resistant starch (P‐RS4) is prepared through high‐temperature citric acid esterification. Then, P‐RS4 is selenized using the nitrate‐sodium selenite method and analyzed with Scanning Electron Microscopy (SEM), Fourier Transform Infrared Spectroscopy (FTIR), X‐ray Photoelectron Spectroscopy (XPS), and Nuclear Magnetic Resonance (NMR). Optimal conditions are identified: 0.7 % HNO3, a 1:1.1 ratio of P‐RS4 to Na2SeO3, 65 °C, and 4 h. Selenization disrupts P‐RS4·Se’s microstructure, forming a Se─O─C bond with ─OH on C6. The selenized starch shows strong in vitro antioxidant effects, protecting A549 lung cancer cells from oxidative damage at 6–8 mg mL−1, supporting selenium supplementation.

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Effect of steam explosion pretreatment on the fermentation characteristics of polysaccharides from tea residue

Ge,

Xiao,

Wang

et al. 2024

International Journal of Biological Macromolecules

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Preparation, characterization, stability and bioactivity of fermented Tremella polysaccharide-Fe3+ complex

Cited by 7 publications

References 59 publications

Study of Lactobacillus plantarum coated with Tremella polysaccharides to improve its intestinal adhesion

Study of Lactobacillus plantarum coated with Tremella polysaccharides to improve its intestinal adhesion

Preparation, Structural Characterization, and Biological Activity of Selenated Potato Resistant Starch

Effect of steam explosion pretreatment on the fermentation characteristics of polysaccharides from tea residue

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