6533b7d9fe1ef96bd126c47c

RESEARCH PRODUCT

The Effect of Calcium on the Cohesive Strength and Flexural Properties of Low-Methoxyl Pectin Biopolymers.

Debra MohnenYifan ZhengWilli L. WagnerWilli L. WagnerMaximilian AckermannChristine ByunHenrik Vibe SchellerSteven J. MentzerAidan Pierce

subject

Toughnessfood.ingredientanimal structuresPectin0206 medical engineeringpolysaccharidesPharmaceutical Sciencechemistry.chemical_element02 engineering and technologyCalciumPolysaccharideArticleAnalytical Chemistrylcsh:QD241-441Medicinal and Biomolecular Chemistryfoodlcsh:Organic chemistryFlexural strengthTheoretical and Computational ChemistryDrug DiscoveryFlexural Strengthotorhinolaryngologic diseasesPhysical and Theoretical ChemistryDissolutionchemistry.chemical_classificationOrganic ChemistryWaterPolymer021001 nanoscience & nanotechnology020601 biomedical engineeringstomatognathic diseasesChemical engineeringchemistryfracture mechanicsChemistry (miscellaneous)Molecular MedicinePectinsTitrationCalcium0210 nano-technologymaterial propertiesmethoxylationhydration

description

Abstract: Pectin binds the mesothelial glycocalyx of visceral organs, suggesting its potential role as a mesothelial sealant. To assess the mechanical properties of pectin films, we compared pectin films with a less than 50% degree of methyl esterification (low-methoxyl pectin, LMP) to films with greater than 50% methyl esterification (high-methoxyl pectin, HMP). LMP and HMP polymers were prepared by step-wise dissolution and high-shear mixing. Both LMP and HMP films demonstrated a comparable clear appearance. Fracture mechanics demonstrated that the LMP films had a lower burst strength than HMP films at a variety of calcium concentrations and hydration states. The water content also influenced the extensibility of the LMP films with increased extensibility (probe distance) with an increasing water content. Similar to the burst strength, the extensibility of the LMP films was less than that of HMP films. Flexural properties, demonstrated with the 3-point bend test, showed that the force required to displace the LMP films increased with an increased calcium concentration (p &lt

yearjournalcountryeditionlanguage
2019-12-24Molecules (Basel, Switzerland)
10.3390/molecules25010075https://pubmed.ncbi.nlm.nih.gov/31878302