ITENE

Valencia de Alcántara, Spain
Valencia de Alcántara, Spain
SEARCH FILTERS
Time filter
Source Type

Home > Press > NanoMONITOR shares its latest developments concerning the NanoMONITOR Software and the Monitoring stations Abstract: ABOUT NANOMONITOR The LIFE+ project NanoMONITOR addresses the challenges of supporting the risk assessment of nanomaterials under REACH by development of a real-time information and monitoring system. SUMMARY OF THE OUTCOMES SO FAR The main outcomes of the project include: -A Microsoft EXCEL based application to evaluate the reliability of data on the concentration of ENMs in indoor and outdoor areas according with the information requirements laid down on REACH -A complete inventory of data on the levels of particles in the nanometer range measured during the production and downstream use of ENMs and nano-enabled products. -An on-line library of exposure scenarios across the life cycle of 15 ENMs -Design of the NanoMONITOR software platform -Design of the first NanoMONITOR measurement station prototype -Edition of dissemination materials. MONITORING STATION LATEST DEVELOPMENTS The NanoMONITOR monitoring station prototype is a compact size air monitoring station designed to provide real-time information of the concentration of engineered nanomaterials (ENMs) in outdoor and indoor areas. It has been designed by the members of the project NanoMONITOR, in particularITENE and CEAM. The station prototype has been designed considering two integrated modules. Module 1, or “particle counting unit” able to detect and measure the levels of nanosized (1 to 100 nm in diameter) and ultra-fine airborne particles (10 to 300 nm in diameter) in indoor workplaces and outdoor environments, providing data on the number concentration (number/ cm3), mass concentration (mg/ cm3), lung deposited surface area (µm2/ cm3), and average particle diameter (nm). Module 2, or “pump-based sampling system” able to collect nanosized and ultra-fine airborne particles from an aerosol stream on a collection plate or filter. A tailored designed software to control the instrument settings, collect and store data has been designed. The software offers a dynamic control of the operation of the station, considering: -Tailored designed lab view Programming -Remote and local access to configure the settings of the monitoring station. Provide user configuration and scheduling of main sampling and operation conditions. -Remote and local access to information on the levels on nanosized and ultra-fine airborne particles measured by the station. -Real-time display of measurements. -Ability to identify relevant events during operation. (i.e. high concentration or external situations affecting the measure). NANOMONITOR SOFTWARE LATEST DEVELOPMENTS The development and deployment of a back-end application Server accompanied by a Web based client application has been selected in view of the opinions retrieved from the target audience of the project. The NanoMONITOR software platform is an infrastructure, accessible over the Web, making available processed and/or raw data from the various data sources, including data transmitted by the network of monitoring stations in operation or/and uploaded by the companies or researchers interested in provide measured data on the concentration of ENMs using our portal. The web portal is a full graphical GUI “Graphical Using Interface” using modern responsive HTML5 dynamic pages generation technology and it is intended to be used primarily by non IT personnel e.g. environment scientists. NEXT STEPS NanoMONITOR upcoming schedule includes -Delivery of the first two units of the monitoring prototype in early April 2017 -Delivery of two additional units in late June 2017 -Release of the beta version on the NanoMONITOR software in early April 2017. CALL FOR FEEDBACK We welcome feedback from anyone interested in using and testing our solutions in the period July -October 2017. For more information please contact Carlos Fito ( ). Project Partners: ITENE (Packaging, Transport & Logistics Research Centre), Spain AXON Enviro-Group Ltd., Greece The Mediterranean Center for Environmental Studies (CEAM), Spain The REACH Centre, UK Thanks in advance for posting it! For more information, please click If you have a comment, please us. Issuers of news releases, not 7th Wave, Inc. or Nanotechnology Now, are solely responsible for the accuracy of the content.


Maisanaba S.,University of Seville | Gutierrez-Praena D.,University of Seville | Pichardo S.,University of Seville | Moreno F.J.,University of Seville | And 4 more authors.
Journal of Applied Toxicology | Year: 2014

The incorporation of the natural mineral clay montmorillonite into polymeric systems enhances their barrier properties as well as their thermal and mechanical resistance, making them suitable for a wide range of industrial applications, e.g., in the food industry. Considering humans could easily be exposed to these clays due to migration into food, toxicological and health effects of clay exposure should be studied. In the present work, the cytotoxic effects induced by two different clays (the unmodified clay Cloisite® Na+, and the organically modified Cloisite® 30B) on Caco-2 cells were studied after 24 and 48 h of exposure. The basal cytotoxicity endpoints assessed were total protein content, neutral red uptake and a tetrazolium salt reduction. Our results showed that only Cloisite® 30B induced toxic effects. Therefore, the effects of subcytotoxic concentrations of this clay on the generation of intracellular reactive oxygen species, glutathione content and DNA damage (comet assay) were investigated. Results indicate that oxidative stress may be implicated in the toxicity induced by Closite® 30B, in regards of the increases in intracellular reactive oxygen species production and glutathione content at the highest concentration assayed, while no damage was observed in DNA. The most remarkable morphological alterations observed were dilated cisternae edge in the Golgi apparatus and nucleolar segregation, suggesting impairment in the secretory functions, which could be related to inhibition in the synthesis of proteins. © 2013 John Wiley & Sons, Ltd.


Cerisuelo J.P.,Institute Agroquimica Y Tecnologia Of Alimentos | Alonso J.,ITENE | Aucejo S.,ITENE | Gavara R.,Institute Agroquimica Y Tecnologia Of Alimentos | Hernandez-Munoz P.,Institute Agroquimica Y Tecnologia Of Alimentos
Journal of Membrane Science | Year: 2012

A nanoclay/EVOH composite has been developed to retard the release of a volatile antimicrobial from an EVOH film with application in active packaging. Concretely, 2% of bentonite nanoclay was added to the EVOH-29 matrix to modify its mass transport properties and consequently the activity of the antimicrobial film. The nanocomposite obtained, containing 5% of carvacrol as antimicrobial compound, is characterized in terms of antimicrobial solubility and release, water vapor solubility and permeability, oxygen and carbon dioxide permeability, diffusivity and solubility, thermal properties, and microstructural morphology.The clay-filled EVOH-29 film had a similar macroscopic appearance to the unfilled film, thanks to the excellent dispersion of bentonite nanoparticles as revealed by TEM images. Glass transition temperature was higher in the modified material, whereas fusion temperature was slightly lower, although the differences found were not significant. Water vapor, oxygen, carbon dioxide, and carvacrol solubilities were found to be higher for the modified polymer, whereas water vapor permeability, carvacrol diffusivity, and oxygen and carbon dioxide permeabilities and diffusivities were found to be lower for the nanocomposite. All parameters, with the exception of water vapor permeability, increased with the water concentration in the polymeric matrix. Therefore, the incorporation of 2% bentonite nanoclay in EVOH-29 provides a significant improvement in the controlled release of the antimicrobial agent with no relevant drawbacks. © 2012 Elsevier B.V..


Cerisuelo J.P.,Institute Agroquimica Y Tecnologia Of Alimentos | Muriel-Galet V.,Institute Agroquimica Y Tecnologia Of Alimentos | Bermudez J.M.,ITENE | Aucejo S.,ITENE | And 3 more authors.
Journal of Food Engineering | Year: 2012

Antimicrobial active packaging is a novel technology in which a chemical compound (or mixture) is purposely incorporated into a packaging material to be released into the food to protect it from deterioration. The effectiveness of an antimicrobial package is strongly related to the balance between the controlled release of the active compound and microbial growth kinetics. This work characterizes and models the release of carvacrol from an EVOH coating on a PP film which can be employed as an active packaging system. The kinetics and extent of carvacrol mass transport within the packaging components were fully characterized as a function of relative humidity. As expected, water uptake by the EVOH coating acts as a triggering mechanism for activity. The partition equilibrium for carvacrol in the complex film largely favors (10,000-fold) the EVOH layer in dry conditions, although in humid conditions the solubility in both polymers is very close (4-fold). Kinetically, the presence of humidity increases the value of D for carvacrol in EVOH from 3 · 10 -19 m 2/s in dry conditions to 3 · 10 -15 m 2/s in a wet environment. After the experimental characterization of carvacrol transport, the efficiency of the release of carvacrol was estimated with a novel mathematical model based on the finite element method and successfully compared with the evolution of carvacrol concentration in a real packaging system. The model developed can be employed in the optimization of package design in order to ensure the maintenance of a specific concentration of the active agent in the headspace, high enough to prevent potential growth of a particular foodborne spoiling or pathogenic microorganism on the preserved foodstuffs. This model could easily be extended to similar packaging systems as long as an inventory of experimental data for all the parameters and coefficients involved is available, sufficiently complete to fulfill all the mathematical requirements demanded by the model. © 2011 Elsevier Ltd. All rights reserved.


Lopez-de-Dicastillo C.,Institute Agroquimica Y Tecnologia Of Alimentos | Gallur M.,ITENE | Catala R.,Institute Agroquimica Y Tecnologia Of Alimentos | Gavara R.,Institute Agroquimica Y Tecnologia Of Alimentos | Hernandez-Munoz P.,Institute Agroquimica Y Tecnologia Of Alimentos
Journal of Membrane Science | Year: 2010

Current developments in active food packaging are focusing on incorporating agents into the polymeric package walls that will release or retain substances to improve the quality, safety and shelf-life of the food. Because cyclodextrins are able to form inclusion complexes with various compounds, they are of potential interest as agents to retain or scavenge substances in active packaging applications. In this study, β-cyclodextrin (βCD) was successfully immobilized in an ethylene-vinyl alcohol copolymer with a 44% molar percentage of ethylene (EVOH44) by using regular extrusion with glycerol as an adjuvant. Films with 10%, 20% and 30% of βCD were flexible and transparent. The presence of the agent slightly increased the glass-transition temperature and the crystallinity percentage of the polymer, that is to say, it induced some fragility and a nucleating effect. The water vapor, oxygen and carbon dioxide barrier properties of the materials containing βCD were determined and compared with those of the pure polymeric material. Permeability to these three permeants increased with the addition of βCD due to the presence of discontinuities in the matrix and to the internal cavity of the oligosaccharide. Also the CO2/O2 permselectivity increased with the addition of βCD. Finally, the potential effect of the composites in the food aroma was analyzed. The materials with βCD preferentially sorbed apolar compounds such as terpenes. This characteristic could be useful in active packaging applications for preferentially retaining undesired apolar food components like hexanal or cholesterol. © 2010 Elsevier B.V.


Lopez-De-Dicastillo C.,Institute Agroquimica Y Tecnologia Of Alimentos | Jorda M.,ITENE | Catala R.,Institute Agroquimica Y Tecnologia Of Alimentos | Gavara R.,Institute Agroquimica Y Tecnologia Of Alimentos | Hernandez-Munoz P.,Institute Agroquimica Y Tecnologia Of Alimentos
Journal of Agricultural and Food Chemistry | Year: 2011

Active food packaging systems based on the incorporation of agents into polymeric package walls are being designed to purposely release or retain compounds to maintain or even increase food quality. The objective of this work was to develop polyvinyl alcohol (PVOH)/β-cyclodextrin (βCD) composite films that can be applied to reduce undesirable component content such as cholesterol in foods through active retention of the compounds in the package walls during storage. Cyclodextrins were added to PVOH in a proportion of 1:1 and cross-linked with glyoxal under acidic media to reduce its water-soluble character. Three different cross-linking procedures were used: cross-linking of the polymer/polysaccharide mixture in solution and film casting, PVOH. βCD*; cross-linking of the polymer, addition of βCD, and casting of the mixture, PVOH*.CD; and casting of a PVOH film, addition of a βCD/glyoxal solution onto the film, and cross-linking during drying, PVOH.CD*. Characterization studies showed that the PVOH*.CD and PVOH.CD* films provided the best physical characteristics with the lowest release values and the highest barrier properties. As a potential application, materials were tested as potential cholesterol-scavenging films. There was a significant reduction in the cholesterol concentration in milk samples when they were exposed to the materials developed. © 2011 American Chemical Society.


Cerisuelo J.P.,Institute Agroquimica Y Tecnologia Of Alimentos | Bermudez J.M.,ITENE | Aucejo S.,ITENE | Catala R.,Institute Agroquimica Y Tecnologia Of Alimentos | And 2 more authors.
Journal of Food Engineering | Year: 2013

Natural antimicrobial active packaging is an emerging technology for fresh fish preservation in which a chemical compound of natural origin is purposely incorporated into a packaging material to be released into the food surface in order to protect it from spoilage by foodborne microorganisms. The maximum efficiency of an antimicrobial package can only be obtained when an adequate activity is achieved immediately after the packaging operation and is maintained constant throughout the product's shelf life. This work develops an active package designed for the preservation of fresh farmed salmon in cubes or slices, made up of a rigid polypropylene (PP)/ethylene-vinyl alcohol copolymer (EVOH)/PP tray heat-sealed with an active PP/EVOH/PP film lid in which 6.5% carvacrol is incorporated in the EVOH kernel as an antimicrobial active agent. The work also includes the measurement of the carvacrol kinetics and equilibrium parameters in the preserved salmon fillets, and proposes a mathematical model based on the finite element method to describe and simulate the common performance of the developed package/food system, and to predict its behavior under different working conditions or system configurations with the objective of finding the optimum combination of variables that ensure the best packaging performance. The results obtained from the determination of parameters showed a rapid migration of the active compound through the fish muscle, and a low affinity of the agent molecules for the food matrix. The active package was successfully developed, and the proposed model was satisfactorily used to detect the key factors that govern the package performance, and also to improve the package design by modifying the thickness distribution of the multilayer active film. © 2013 Elsevier Ltd. All rights reserved.


Lopez-De-Dicastillo C.,Institute Agroquimica Y Tecnologia Of Alimentos | Alonso J.M.,ITENE | Catala R.,Institute Agroquimica Y Tecnologia Of Alimentos | Gavara R.,Institute Agroquimica Y Tecnologia Of Alimentos | Hernandez-Munoz P.,Institute Agroquimica Y Tecnologia Of Alimentos
Journal of Agricultural and Food Chemistry | Year: 2010

Ethylene-vinyl alcohol copolymer (EVOH) films containing catechin or quercetin as antioxidant agents were successfully produced by extrusion. The addition of these bioactive compounds did not modify greatly their water and oxygen permeabilities, Tg, or crystallinity but improved their thermal resistance. Exposure of the films to different food simulants showed that both compounds were released, although the extent and kinetics of release were dependent on the type of food. In aqueous and alcoholic food simulants their release was greater in the case of the catechincontaining samples. Exposure of the films to isooctane and ethanol 95% (fatty food simulants) provided controversial results; no release was observed in isooctane, whereas both bioactive compounds were extracted by ethanol due to their high solubility in alcohol and the plasticizing effect of ethanol on the polymer. Packaging applications of these films can improve food stability and provide a method for adding such bioactive compounds. © 2010 American Chemical Society.


Muriel-Galet V.,Institute Agroquimica Y Tecnologia Of Alimentos | Cerisuelo J.P.,Institute Agroquimica Y Tecnologia Of Alimentos | Lopez-Carballo G.,Institute Agroquimica Y Tecnologia Of Alimentos | Lara M.,ITENE | And 2 more authors.
International Journal of Food Microbiology | Year: 2012

The aim of the present work was to characterize the antimicrobial efficiency of films consisting of PP/EVOH structures with oregano essential oil and citral. Both substances are known for their antimicrobial activity based on their interaction with the cell membrane. The films developed were used to pack minimally processed salads, combining modified atmosphere technology to extend shelf-life and active packaging technology to reduce possible microbiological risks. The antimicrobial activity of the films against the pathogenic microorganisms . Escherichia coli, . Salmonella enterica and . Listeria monocytogenes and natural microflora was investigated ". in vitro" and also on the food itself. The effect of release of the antimicrobial agent on the sensory characteristics of the salad was also studied. The results showed that antimicrobial activity reduced spoilage flora on the salad as well as inhibited the growth of pathogens in contaminated salads. This effect was greater against Gram-negative bacteria. Sensory studies showed that the package that was most effective and most accepted by customers was the one containing 5% oregano essential oil. © 2012 Elsevier B.V.


Muriel-Galet V.,Institute Agroquimica Y Tecnologia Of Alimentos | Cerisuelo J.P.,Institute Agroquimica Y Tecnologia Of Alimentos | Lopez-Carballo G.,Institute Agroquimica Y Tecnologia Of Alimentos | Aucejo S.,ITENE | And 2 more authors.
Food Control | Year: 2013

The aim of this study was to improve the present packaging of salad by combining modified atmosphere packaging with a new antimicrobial active bag consisting of PP/EVOH film with oregano essential oil or citral, with the purpose of extending shelf-life and reducing possible microbiological risks. The (O 2) and CO 2 barrier properties of PP/EVOH, mechanical properties (Young's modulus, tensile strength and elongation at break) were determined and compared with those of standard PP films. Antimicrobial tests were carried out for enterobacteria, total aerobic counts, yeasts and moulds, and lactic acid bacteria and psychrotrophic bacteria, and the effect of the release of the antimicrobial agent on the sensory characteristics of the salads was also studied. The application of the EVOH coating results in an increase in the tensile resistance of the PP films and a reduction in the elongation at break. The results showed that microorganism counts bacteria decreased especially at the beginning of the storage period. OEO and CITRAL samples had reductions of 1.38 log and 2.13 log respectively against enterobacterias, about 2 log against yeasts and moulds. The total aerobic counts reduced 1.08 log with OEO and 1.23 log with CITRAL and the reduction of lactic acid bacteria and psychrotrophic was about 2 log. Citral-based films appeared to be more effective than materials containing oregano essential oil in reducing spoilage flora during storage time. Sensory studies also showed that the package with citral was the most accepted by customers at the end of the shelf-life. © 2012 Elsevier Ltd.

Loading ITENE collaborators
Loading ITENE collaborators