Hydrodynamic Parameters of Strelitzia Gum

Masuelli, Martin Alberto

doi:10.3390/colloids2040045

Cited by 6 publications

(6 citation statements)

References 23 publications

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“…However, structurally, gum arabic type polymers are polymeric structures with very poor biopermanence. These properties limit the usage options of these polymers [22]. In the scope of the study, in order to eliminate this disadvantage, cross-linking of polymers with biocompatible PEG structures was carried out.…”

Section: Synthesis Of Polymeric Structuresmentioning

confidence: 99%

Synthesis of Gum Arabic-Based Biopolymer Network and Determination of Its Toxicity Properties in In Vitro - In Vivo Model Systems

Karaca Açarı,

Özhan Turhan,

Kuruçay

et al. 2024

Cumhuriyet Science Journal

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In this study, gum arabic based network polymers were prepared using epoxy functional PEG structures. The basic physicochemical properties of these structures, their structural characterization, thermal properties and morphological properties were investigated. Toxicity properties of constructs synthesized on zebrafish (Danio rerio (Hamilton)) offspring were determined in vivo. In addition, in vitro toxicity tests were performed on L929 fibroblast cells. When the general properties of these structures were examined. Structural and thermal properties were better with increasing cross-linker rates ratios (1%, 3%, 5%). According to the toxicity test performed on zebrafish juveniles; GA-PEG-Epox (1%) constructs are non-toxic to zebrafish juveniles. The mortality rate of GA-PEG-Epox (3%) and GA-PEG-Epox (5%) structures was observed as 12.5% and 20.8%, respectively. It was observed that the structures were not toxic to zebrafish juveniles. MTT test performed on L929 fibroblast cells, high cell viability (>90%) was observed in all synthesized structures. These results are evaluated as Grade 1 according to ISO standards.

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Section: Synthesis Of Polymeric Structuresmentioning

confidence: 99%

Synthesis of Gum Arabic-Based Biopolymer Network and Determination of Its Toxicity Properties in In Vitro - In Vivo Model Systems

Karaca Açarı,

Özhan Turhan,

Kuruçay

et al. 2024

Cumhuriyet Science Journal

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“…In these cases of superposition of exponentials functions, their distribution can be obtained by inverse Laplace transformation of g 1 (t) using the CONTIN program (swMATH, Berlin, Germany) [22][23][24]. The hydrodynamic radius R HDLS of the particles and macromolecules can be calculated from D using the Stokes-Einstein equation [25]:…”

Section: Dynamic Light Scatteringmentioning

confidence: 99%

“…where k B is the Boltzmann constant, T is the temperature (K), η is the viscosity solution (poise), and D is the diffusion coefficient (cm 2 s −1 ). The molecular weight is calculated using the following equation [25]:…”

Section: Dynamic Light Scatteringmentioning

confidence: 99%

Physicochemical Parameters for Brea Gum Exudate from Cercidium praecox Tree

Masuelli

Slatvustky

Ochoa

et al. 2018

Colloids and Interfaces

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Brea gum (BG) is a hydrocolloid obtained as an exudate from the Cercidium praecox tree. The physicochemical properties of brea gum are similar to those of the arabic gum and, in many cases, the former can replace the latter. The brea gum was incorporated in 2013 into the Argentine Food Code because of its ancestral background and its current food uses. Brea gum could be also used as additive or excipient for pharmacological formulations. This work reports intrinsic viscosity, coil overlap, and Mark–Houwink–Kuhn–Sakurada (MHKS) parameters of BG solutions. Partially hydrolyzed BG solution was analyzed using intrinsic viscosity measurements, dynamic light scattering and size-exclusion chromatography (SEC). The MHKS parameters, a and k, were determined for BG at 25 °C, with values of 0.4133 and 0.1347 cm3 g−1, respectively. The viscometric molecular weight of BG was 1890 kg mol−1. The hydrodynamic parameters of BG were indicative of a hyperbranched structure and spherical conformation. The knowledge obtained on the physicochemical properties of brea gum favors its use in food and pharmaceutical applications.

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“…The intrinsic viscosity is determined by the Solomons-Ciuta equation through measurements of flow times in capillary viscometers and the density of biopolymeric solutions in the Newtonian zone (Masuelli, 2018a). The intrinsic viscosity measurement used is single-point method by Solomons-Ciuta equation; from this is calculated the molecular weight, hydrodynamic radius, form factor, etc.…”

Section: Introductionmentioning

confidence: 99%

“…Mark 1938 andHouwink 1940, M-H, links the intrinsic viscosity with molecular weight, and this equation is applicable to many biopolymers and synthetic polymers, is specialty used for molecular weight determination. The "k" and "a" parameters both vary with the nature of the biopolymer solution, temperature, pH, ions and dissolvent (Masuelli, et al 2013b). The calculation of M-H parameters (Masuelli et al, 2013b, Masuelli, 2014b) is carried out by the plot representation of the following equation:…”

Section: Introductionmentioning

confidence: 99%

Influence of the Type of Hydrolysis on the Intrinsic Viscosity of Lithraea Molleoides Fruit Gum

2023

MPS

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Lithraea Molleoides fruit Gum (LMFG) is obtained from the total hydrolysis of the fruit. The hydrolysis used are three, thermal (LMFG-T), basic (LMFG-B) and acid (LMFG-A). The aim of hydrolysis is bond breaking and de-esterification of polysaccharide, with the consequent increase in solubility and decrease in molecular weight. Intrinsic viscosity measurement is standard for polymers and biopolymers, as well as being inexpensive. Through intrinsic viscosity, in addition, the hydrodynamic radius, molecular weight, shape factor, etc. can be determined. The objective of this work is to be able to evaluate the different hydrolysis through intrinsic viscosity measurements and, in turn, to study the performance of each one of them.

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Hydrodynamic Parameters of Strelitzia Gum

Cited by 6 publications

References 23 publications

Synthesis of Gum Arabic-Based Biopolymer Network and Determination of Its Toxicity Properties in In Vitro - In Vivo Model Systems

Synthesis of Gum Arabic-Based Biopolymer Network and Determination of Its Toxicity Properties in In Vitro - In Vivo Model Systems

Physicochemical Parameters for Brea Gum Exudate from Cercidium praecox Tree

Influence of the Type of Hydrolysis on the Intrinsic Viscosity of Lithraea Molleoides Fruit Gum

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