Polyelectrolyte complexes from gum arabic and gelatin: Optimal complexation pH as a key parameter to obtain reproducible microcapsules

Silva, Bruno C. da; Oliveira, Mariana de; Ferreira, Janaina G.; Sierakowski, Maria Rita; Simas, Fernanda Fogagnoli; Orth, Elisa S.; Riegel‐Vidotti, Izabel C.

doi:10.1016/j.foodhyd.2014.12.022

Cited by 24 publications

(22 citation statements)

References 31 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Additionally, signals for the anchored API were depicted and assigned to the: (i) IMZ ring at d 137.3, d 126.0, and d 120.5 ppm and (ii) secondary carbons at d 44.9, d 42.7, and d 24.9 ppm. 18 These pK a s were also detected for GAIMZ with an additional third pK a3 of 7.48 AE 0.01, assigned to the IMZ moieties, as reported for other complex systems such as enzymes with histidine side groups. Fig.…”

supporting

confidence: 69%

A tailored biocatalyst achieved by the rational anchoring of imidazole groups on a natural polymer: furnishing a potential artificial nuclease by sustainable materials engineering

et al. 2015

Self Cite

View full text Add to dashboard Cite

Foreseeing the development of artificial enzymes by sustainable materials engineering, we rationally anchored reactive imidazole groups on gum arabic, a natural biocompatible polymer. The tailored biocatalyst GAIMZ demonstrated catalytic activity (>10(5)-fold) in dephosphorylation reactions with recyclable features and was effective in cleaving plasmid DNA, comprising a potential artificial nuclease.

show abstract

supporting

confidence: 69%

A tailored biocatalyst achieved by the rational anchoring of imidazole groups on a natural polymer: furnishing a potential artificial nuclease by sustainable materials engineering

et al. 2015

Self Cite

View full text Add to dashboard Cite

show abstract

“…Commercial gum arabic (GA), type-A gelatin, and glutaraldehyde were purchased from Sigma-Aldrich. GA and type-A gelatin were previously characterized as described elsewhere [5] . A. vera oil was purchased from Brazilian industry, and fatty acids from A. obliquus were donated by NPDEAS (Núcleo de Pesquisa e Desenvolvimento de Energia Autossustentável -UFPR, Brazil).…”

Section: Methodsmentioning

confidence: 99%

“…The most relevant experimental parameters for the complex coacervation method are temperature, concentration, agitation speed and pH. Regarding pH, it was previously demonstrated that the optimal pH for the coacervation of the studied materials is 4.00, so this was the adopted value [2,5] . In this way, the studied variables were wall-to-core ration (m/m) (1:1 or 1:2), temperature (40°C or 60°C) and agitation speed (900 or 10,000 rpm).…”

Section: Study Of the Complex Coacervation Experimental Parametersmentioning

confidence: 99%

“…Microparticles were produced as described in the literature [5] . Briefly, GA (2.5 wt%) was dissolved in distilled water with magnetic stirring at room temperature (25°C) overnight with continuous stirring.…”

Section: Study Of the Complex Coacervation Experimental Parametersmentioning

confidence: 99%

“…The colloid-rich phase coalesces around the dispersed material (an oil, for example), thus forming the microcapsule [3,4] . Complex coacervation allows the production of microcapsules using charged biomacromolecules with high efficiency, as well as the encapsulation of hydrophobic materials at mild temperatures [3,[5][6][7] .…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Synthesis and characterization of microalgae fatty acids or Aloe vera oil microcapsules

et al. 2019

View full text Add to dashboard Cite

It's proposed a single methodology for the encapsulation of Aloe vera oil or microalgae fatty acids using the complex coacervation process between gelatin and gum arabic. Although a very recurrent method, it is not trivial to establish a single coacervation methodology to encapsulate different compounds. The optimal synthesis conditions, that resulted in the best yield and encapsulation efficiency, are 1:1 (m/m) wall-to-core ratio, a temperature of 40°C and agitation speed of 10,000 rpm. Optical microscopy analysis revealed that the microcapsules are spherical, have average diameters of 112 μm (A. vera) and 118 μm (microalgae) and do not form agglomerates. The microcapsules were characterized by the osmotic pressure at which they ruptured, allowing the calculation of their mechanical resistance, which resulted in 392 MPa (A. vera) and 425 MPa (microalgae). The presented optimized methodology to encapsulate both compounds aims to contribute to their efficient and rational use, especially in cosmeceutical applications.

show abstract

Polysaccharides as Green Biodegradable Platforms for Building‐up Electroactive Composite Materials: An Overview

Simas

Grein-Iankovski

Vidotti

et al. 2017

Handbook of Composites From Renewable Materials

View full text Add to dashboard Cite

Polyelectrolyte complexes from gum arabic and gelatin: Optimal complexation pH as a key parameter to obtain reproducible microcapsules

Cited by 24 publications

References 31 publications

A tailored biocatalyst achieved by the rational anchoring of imidazole groups on a natural polymer: furnishing a potential artificial nuclease by sustainable materials engineering

A tailored biocatalyst achieved by the rational anchoring of imidazole groups on a natural polymer: furnishing a potential artificial nuclease by sustainable materials engineering

Synthesis and characterization of microalgae fatty acids or Aloe vera oil microcapsules

Polysaccharides as Green Biodegradable Platforms for Building‐up Electroactive Composite Materials: An Overview

Contact Info

Product

Resources

About