Search results for "Biopolymeric foam"

showing 2 items of 2 documents

Carvacrol activated biopolymeric foam: An effective packaging system to control the development of spoilage and pathogenic bacteria on sliced pumpkin…

2021

Abstract A commercial biodegradable starch-based polymer (Mater-Bi) was activated with carvacrol to develop a biodegradable and compostable polymer to be used in food packaging. Based on previous tests, carvacrol was added at 20 % weight of foam. MB foams, with and without carvacrol, were tested for their morphological characteristics, mechanical tests and kinetics of carvacrol release under refrigerated storage conditions. Carvacrol slightly increased the porosity of the foams, induced a reduction of the compressive elastic modulus (Ecom) of foamed MB from 6 to ∼ 3.4 MPa and a decrease of the tensile elastic modulus from ∼70 MPa to ∼16.5 MPa. Carvacrol release from the foam at 4 °C was alm…

0106 biological sciencesMicrobiology (medical)Polymers and PlasticsMelonStarchFood spoilageActive packagingBiopolymeric foamsSettore AGR/04 - Orticoltura E FloricolturaSpoilage and pathogenic bacteriamedicine.disease_cause01 natural sciencesAntibacterial propertiesBiomaterialsFood packagingchemistry.chemical_compound0404 agricultural biotechnologyListeria monocytogenesCarvacrol010608 biotechnologymedicineCarvacrolFood scienceSafety Risk Reliability and QualityFood model systemsbiologyChemistrySettore ING-IND/34 - Bioingegneria Industriale04 agricultural and veterinary sciencesbiology.organism_classification040401 food scienceFood packagingSettore ING-IND/22 - Scienza E Tecnologia Dei MaterialiIn vivo activityBacteriaSettore AGR/16 - Microbiologia AgrariaFood ScienceFood Packaging and Shelf Life
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Antibacterial biopolymeric foams: Structure–property relationship and carvacrol release kinetics

2019

Abstract In this work, the feasibility of antibacterial biopolymeric foams containing carvacrol (CRV) for potential food packaging applications was investigated. Sodium bicarbonate (SB) was chosen as foaming agent and a commercial biodegradable polymer, Mater-Bi® (MB), as a matrix. MB/SB and MB/SB/CRV systems were prepared by melt mixing and the foaming process was conducted in a laboratory press. The influence of foaming agent and antibacterial additive content was investigated. The foamed samples were characterized through morphological analysis, mechanical tests and measurements of CRV release kinetics. Moreover, a mathematical model, i.e. power law model, was used to fit the release dat…

Biopolymeric foamPolymers and PlasticsKineticsGeneral Physics and AstronomyFoaming agent02 engineering and technology010402 general chemistry01 natural sciencesEssential oillaw.inventionFood packagingchemistry.chemical_compoundMagazinelawMaterials ChemistryCarvacrolPorosityChemistryOrganic ChemistryAntibacterial propertie021001 nanoscience & nanotechnologyBiodegradable polymer0104 chemical sciencesFood packagingChemical engineering0210 nano-technologyAntibacterial activityEuropean Polymer Journal
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