Search results for " layer-by-layer"

showing 3 items of 3 documents

CHARACTERIZATION AND DEVELOPMENT OF DIFFERENT METHODS TO EXTEND THE SHELF LIFE OF FRESH-CUT FRUIT

2017

La frutta di IV gamma è un prodotto altamente deperibile, con una shelf-life molto corta (5-7 giorni) influenzata dalle numerose variabili che entrano in gioco accelerando la senescenza del prodotto. Il suo alto valore aggiunto può giustificare l’utilizzo di soluzioni di conservazione più o meno costose. I metodi attualmente esistenti sono numerosi, spaziano dal dipping in sostanze naturali o sintetiche, all’utilizzo di packaging attivi, all’impiego di atmosfere modificate, ecc. Queste metodiche di conservazione incidono in maniera diversa sui costi finali del prodotto ma soprattutto sulla conservazione dello stesso e sul mantenimento della sua qualità lungo tutto il periodo di shelf-life. …

AntibacterialSettore AGR/03 - Arboricoltura Generale E Coltivazioni ArboreePackagingReady-to-eatPostharvestSettore AGR/15 - Scienze E Tecnologie AlimentariAntioxidantLayer-by-layer.Ready-to-eat; Packaging; Postharvest; Microbiology; Antioxidant; Antibacterial; Nanocellulose; Pineapple Peach; Layer-by-layer.MicrobiologyPineapple PeachNanocellulose
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From the solution processing of hydrophilic molecules to polymer-phthalocyanine hybrid materials for ammonia sensing in high humidity atmospheres.

2014

We have prepared different hybrid polymer-phthalocyanine materials by solution processing, starting from two sulfonated phthalocyanines, s-CoPc and CuTsPc, and polyvinylpyrrolidone (PVP), polyethylene glycol (PEG), poly(acrylic acid-co-acrylamide) (PAA-AM), poly(diallyldimethylammonium chloride) (PDDA) and polyaniline (PANI) as polymers. We also studied the response to ammonia (NH3) of resistors prepared from these sensing materials. The solvent casted films, prepared from s-CoPc and PVP, PEG and PAA-AM, were highly insulating and very sensitive to the relative humidity (RH) variation. The incorporation of s-CoPc in PDDA by means of layer-by-layer (LBL) technique allowed to stabilize the fi…

Materials scienceIndolesPolymersEnvironmental Science and Managementlayer-by-layerInorganic chemistryPolyethylene glycolIsoindoleslcsh:Chemical technologyrelative humidityBiochemistryammoniaArticlepolyanilineAnalytical Chemistrychemistry.chemical_compoundsolution processing; polyaniline; phthalocyanine; hybrid material; layer-by-layer; ammonia; relative humidity; conductometric sensorPolyanilinemedicine[CHIM]Chemical Scienceslcsh:TP1-1185conductometric sensorElectrical and Electronic EngineeringInstrumentationchemistry.chemical_classificationAqueous solutionAniline CompoundsPolyvinylpyrrolidoneEcologyAtmosphereLayer by layerhybrid materialHumidityPolymerAtomic and Molecular Physics and OpticsSolutionsphthalocyaninechemistryPhthalocyaninesolution processingHybrid materialDistributed ComputingHydrophobic and Hydrophilic Interactionsmedicine.drug
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Characterization and development of different methods to extend shelf life of fresh cut fruit. Case study: novel controlled release system by layer-b…

2016

The research project aimed at the investigation of different methods for the storage of fresh-cut fruit. This case study relates to the proposal of an innovative controlled release system to improve the shelf life of ready-to-eat fruit. The methods applied during three research years included the application of active molecules from natural substances, some widely used in commerce and other tested for the first time; first analyzed in vitro and then applied in vivo. The under consideration methods concerned dipping, coating and the layer-by-layer assembly. The analysis carried out on the fruit have monitored pomological traits performances (soluble solids content, titratable acidity, pH, co…

Settore AGR/03 - Arboricoltura Generale E Coltivazioni Arboreeready-to-eat layer-by-layer antioxidant antimicrobial packagingSettore AGR/15 - Scienze E Tecnologie Alimentari
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