Structure, size and aggregated morphology of a β-D-glucan from Lignosus rhinocerotis as affected by ultrasound

Exploring the partial degradation of polysaccharides: Structure, mechanism, bioactivities, and perspectives

“…Hu, Cai et al. (2021) investigated the effects of ultrasound exposure duration on the structure of β‐glucans, finding that shorter exposure times did not disrupt the original sugar ring and triple helix structure, whereas longer exposure times led to the reaggregation of previously separated sugar chains. The findings of this study demonstrate that the structure of polysaccharides is highly dependent on the duration of ultrasound exposure.…”

“…Additionally, ultrasound has been found to cause the degradation and rearrangement of sodium alginate polysaccharide (ARG), with a decrease in M w observed at a frequency of 28 kHz, whereas a higher frequency of 135 kHz induces ARG rearrangement and results in a more regular unit shape (Feng et al, 2017). Hu, Cai et al (2021) investigated the effects of ultrasound exposure duration on the structure of β-glucans, finding that shorter exposure times did not disrupt the original sugar ring and triple helix structure, whereas longer exposure times led to the reaggregation of previously separated sugar chains. The findings of this study demonstrate that the structure of polysaccharides is highly dependent on the duration of ultrasound exposure.…”

Influence of physicochemical changes and aggregation behavior induced by ultrasound irradiation on the antioxidant effect of highland barley β-glucan

“…The ultrasonic probe was dipped 2 cm from the top of the solution. The ultrasonic condition was carried out as previously report with slight modification ( Hu et al, 2021 ). The working frequency of ultrasound is 40 Hz, and the power ultrasound is 900 W. HBG solutions were treated for 0, 10, 20, 30, 40, and 60 min.…”

“…The HBG solution treated with different ultrasonic treatments was diluted to 1 mg/mL. The NaOH solution was adjusted to the concentration of 0.05, 0.1, 0.15, 0.2, 0.25, 0.3 and 0.4 M ( Hu et al, 2021 ). The resulting samples were supplemented with 1.5 mL of different NaOH solutions, 0.75 mL of treated HBG solution, of 0.5 mL of Congo red solution and 0.25 mL of distilled water.…”

Effect of ultrasound on the physical properties and processing of major biopolymers—a review

“…Moreover, with an increase in the sonication time after the critical point, the smaller particles tend to form aggregates, which makes it very unique among other biopolymers studied in this article. 133 Similarly, polysaccharide extracted from the red algae ( Porphyra yezoensis ) has many medical applications. The rate of the polysaccharide from Porphyra yezoensis (PYPS) degradation is exponential with ultrasound treatment time, and the degradation mechanism is based on the mechanical action.…”