Glycogen–Surfactant Complexes: Phase Behavior in a Water/Phytoglycogen/Sodium Dodecyl Sulfate (SDS) System

Nakano, Akihiro; Irie, Ryozo; Tateishi, Koichi

doi:10.1271/bbb.61.2063

Cited by 3 publications

(4 citation statements)

References 7 publications

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“…Coacervation of surfactant/protein mixture has been extensively investigated, among which are SDS/bovine serum albumin (BSA), SDS/lysozyme and SDS/phytoglycogen [37–39,102] . It was found that pH, concentration and mixing ratio played an important role in regulating phase separation of SDS/lysozyme.…”

Section: Coacervation Of Small Amphiphilesmentioning

confidence: 99%

“…Coacervation of surfactant/protein mixture has been extensively investigated, among which are SDS/bovine serum albumin (BSA), SDS/lysozyme and SDS/phytoglycogen. [37][38][39]102] It was found that pH, concentration and mixing ratio played an important role in regulating phase separation of SDS/lysozyme. For example, coacervation of SDS/lysozyme mixture occurred when pH was closed to the isoelectric point (pI) of protein with high ionic strength.…”

Section: Complex Coacervation Of Surfactant/macromolecule Mixturesmentioning

confidence: 99%

“…Hyaluronan/C n TAB), [36] SDS/BSA, [37] SDS/Lysozyme, [38] SDS/Glycogen [39] DEAE‐dextran/AzoGlu 2 , [40] PDDA/Fmoc‐AA, [41] Polylysine/RNA, [42] DEAE‐dextran/DNA [43] …”

Section: Introductionmentioning

confidence: 99%

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Small Amphiphile‐Based Coacervation

Xiao

Jia

Huang

et al. 2022

Chemistry An Asian Journal

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Coacervation plays an important role in the molecular assembly towards soft materials with a diversity of function (e. g., underwater adhesives of mussels and membraneless organelles). Coacervation is observed when one homogenous solution spontaneously separates into two immiscible liquid phases of low and high solute concentration, also known as liquid-liquid phase separation (LLPS), which enables spatiotemporally local concentration of specific molecules. LLPS is a common physical phenomenon in aqueous solutions of polyelectrolytes, surfactants and biomolecules, which has been extensively explored for applica-tions in the fields of environmental remediation, cosmetic formulation, protein purification, extractive fermentation and pharmaceutical microencapsulation. This review summarizes the development of LLPS with low molecular weight amphiphiles to construct simple and complex coacervates using conventional surfactants and novel amphiphiles such as azobenzene-derivatives and peptides. We also highlight the applications of these amphiphile coacervates in the extraction of biomolecules, construction of protocell models and drug delivery.

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Section: Coacervation Of Small Amphiphilesmentioning

confidence: 99%

Section: Complex Coacervation Of Surfactant/macromolecule Mixturesmentioning

confidence: 99%

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Small Amphiphile‐Based Coacervation

Xiao

Jia

Huang

et al. 2022

Chemistry An Asian Journal

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“…Although glycogen and PG have been the subject of small-angle neutron scattering (SANS) and small-angle X-ray scattering (SAXS) studies that have elucidated its properties in water, − PG aggregation behavior in poor solvent conditions has not been investigated with small-angle scattering techniques. Although the stability of PG in water is influenced by its branching degree and one can precipitate PG with high-volume-percentage ethanol , or a surfactant such as sodium dodecyl sulfate, the characteristics of PG at low and moderate ethanol concentrations are still poorly understood. Due to the role of ethanol in the isolation of PG from the plant source, it represents a standard nonsolvent to investigate PG dispersion properties from a solvent quality perspective.…”

Section: Introductionmentioning

confidence: 99%

Tuning the Phytoglycogen Size and Aggregate Structure with Solvent Quality: Influence of Water–Ethanol Mixtures Revealed by X-ray and Light Scattering Techniques

et al. 2022

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Phytoglycogen (PG) is a hyperbranched polysaccharide with promising properties for biomedical and pharmaceutical applications. Herein, we explore the size and structure of sweet corn PG nanoparticles and their aggregation in water–ethanol mixtures up to the ethanol mole fraction x EtOH = 0.364 in dilute concentrations using small-angle X-ray scattering (SAXS) and dynamic light scattering (DLS) measurements. Between 0 ≤ x EtOH ≤ 0.129, the conformation of PG contracts gradually decreasing up to ca. 80% in hydrodynamic volume, when measured shortly after ethanol addition. For equilibrated PG dispersions, SAXS suggests a lower PG volume decrease between 19 and 67% at the corresponding x EtOH range; however, the inflection point of the DLS volume contraction coincides with the onset of reduced colloidal stability observed with SAXS. Up to x EtOH = 0.201, the water–ethanol mixtures yield labile fractal and globular aggregates, as evidenced by their partial breakup under mild ultrasonic treatment, demonstrated by the decrease in their hydrodynamic size. Between 0.235 ≤ x EtOH ≤ 0.364, PG nanoparticles form larger, more cohesive globular aggregates that are less affected by ultrasonic shear forces.

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Development of easy, simple and low-cost preparation of highly purified phytoglycogen nanoparticles from corn

Xue

Inzero

et al. 2019

Food Hydrocolloids

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Glycogen–Surfactant Complexes: Phase Behavior in a Water/Phytoglycogen/Sodium Dodecyl Sulfate (SDS) System

Cited by 3 publications

References 7 publications

Small Amphiphile‐Based Coacervation

Small Amphiphile‐Based Coacervation

Tuning the Phytoglycogen Size and Aggregate Structure with Solvent Quality: Influence of Water–Ethanol Mixtures Revealed by X-ray and Light Scattering Techniques

Development of easy, simple and low-cost preparation of highly purified phytoglycogen nanoparticles from corn

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