Short Communication: The biological value of transition milk: analyses of Immunoglobulin G, IGF-I and Lactoferrin in primiparous and multiparous dairy cows

Colostrum (the first mammary gland secretion after calving) is known to contain high concentrations of nutrients as well as bioactive substances (including immunoglobulins, growth factors, and antimicrobial factors) to ensure neonatal survival. Due to its immunomodulatory, antibacterial, and antiviral activities, bovine colostrum has been used not only in calves but also in the prevention and treatment of human gastrointestinal and respiratory infections. Transition milk is the mammary secretion from the second milking to the sixth, which may contain these bioactive compounds to a lesser extent. The objective of the present study was to measure IGF-I, immunoglobulin G (IgG), and lactoferrin (LTF) concentrations in colostrum and transition milk of primiparous and multiparous cows to further assess its potential use in veterinary and nutraceutical applications. The results demonstrated that the concentrations of these three bioactive molecules decrease from the first milking to the tenth. Concentrations of IGF-I and LTF were greater in multiparous than in primiparous cows. Also, lactation number interacted with milking number in IGF-I, since primiparous cows had a smoother decline of IGF-I concentrations than multiparous ones. Overall, transition milk from the second milking showed a 46% decrease in the analysed colostrum bioactive molecules. Therefore, further studies are needed to apply this knowledge in neonate farm management practices or in developing pharmaceutical supplements from farm surpluses.info:eu-repo/semantics/publishedVersio

Nanocrystalline tin oxide nanofibers deposited by a novel focused electrospinning method. Application to the detection of TATP precursors

A new method of depositing tin dioxide nanofibers in order to develop chemical sensors is presented. It involves an electrospinning process with in-plane electrostatic focusing over micromechanized substrates. It is a fast and reproducible method. After an annealing process, which can be performed by the substrate heaters, it is observed that the fibers are intertwined forming porous networks that are randomly distributed on the substrate. The fiber diameters oscillate from 100 nm to 200 nm and fiber lengths reach several tens of microns. Each fiber has a polycrystalline structure with multiple nano-grains. The sensors have been tested for the detection of acetone and hydrogen peroxide (precursors of the explosive triacetone triperoxide, TATP) in air in the ppm range. High and fast responses to these gases have been obtained. © 2014 by the authors; licensee MDPI, Basel, Switzerland.This work has been supported by the Spanish Science and Innovation Ministry under the projects TEC2010-21357-C05-04 and TEC2013-48147-C6-4-R. Authors want to thank University of Extremadura for SEM and XRD analysis. We acknowledge support by the CSIC Open Access Publication Initiative through its Unit of Information Resources for Research (URICI)Peer Reviewe

Love-Wave Sensors Combined with Microfluidics for Fast Detection of Biological Warfare Agents

The following paper examines a time-efficient method for detecting biological warfare agents (BWAs). The method is based on a system of a Love-wave immunosensor combined with a microfluidic chip which detects BWA samples in a dynamic mode. In this way a continuous flow-through of the sample is created, promoting the reaction between antigen and antibody and allowing a fast detection of the BWAs. In order to prove this method, static and dynamic modes have been simulated and different concentrations of BWA simulants have been tested with two immunoreactions: phage M13 has been detected using the mouse monoclonal antibody anti-M13 (AM13), and the rabbit immunoglobulin (Rabbit IgG) has been detected using the polyclonal antibody goat anti-rabbit (GAR). Finally, different concentrations of each BWA simulants have been detected with a fast response time and a desirable level of discrimination among them has been achieved.This work was supported by the Spanish Science and Innovation Ministry under the project TEC2010-21357-C05-04, and a postdoctoral fellowship at the National Autonomous University of Mexico.We acknowledge support by the CSIC Open Access Publication Initiative through its Unit of Information Resources for Research (URICI)Peer reviewe

Complements alimentaris: control oficial

Complements alimentaris; Control oficial; Guia; Seguretat alimentàriaComplementos alimenticios; Control oficial ; Guia; Seguridad alimentariaFood supplements; Official controls; Guide; Food safetyAquesta publicació pretén donar una visió general del control oficial dels complements alimentaris a Catalunya mitjançant el recull de les diferents fonts normatives i documentals existents relatives als complements alimentaris, amb la finalitat principal de tenir una eina de suport al personal de l’Agència de Salut Pública de Catalunya, així com a altres administracions i professionals del sector. A més, amb l’elaboració d’aquesta guia es vol ajudar a entendre què són els complements alimentaris i donar a conèixer què es fa des de les administracions públiques per mantenir la seguretat alimentària. El document s’estructura en diversos apartats, que inclouen la inscripció al registre sanitari de les empreses que comercialitzen complements alimentaris, la notificació d’aquests complements i la normativa aplicable, sense deixar d’aprofundir en aspectes relacionats amb la composició, l’envasament, l’etiquetatge, els contaminants i els criteris microbiològics. Aquesta guia inclou taules de consulta per identificar els ingredients que intervenen en la composició dels complements alimentaris i un protocol per a la revisió de l’etiquetatge correcte. Índe

L'Autocontrol als establiments alimentaris: guia per a l'aplicació de l'autocontrol basat en el Sistema d'Anàlisi de Perills i Punts de Control Crític

Autocontrol; APPCC; Establiments alimentarisAutocontrol; APPCC; Establecimientos alimentariosSelf-control; HACCP; Food EstablishmentsGuía para el diseño y la aplicación por parte de las empresas alimentarias de autocontroles basados en el Sistema de Análisis de Peligros y Puntos de Control Crítico (APPCC) dirigido a los establecimientos alimentarios, su extensión a los sectores que se encuentran al principio de la cadena alimentaria y la formación de todos los profesionales que actúan a lo largo del proceso de obtención de alimentos. Documento elaborado por expertos en el control oficial y en la verificación y la supervisión de sistemas de autocontrol del Departamento de Salud y de la Agencia de Salud Pública de Barcelona. El objetivo es la prevención de riesgos sanitarios asociados el consumo de alimentos y facilitará a los operadores de los establecimientos alimentarios la aplicación real y efectiva de autocontroles basados en el Sistema de APPCC para producir alimentos seguros.Guia per al dissey i l'aplicació per part de les empreses alimentàries d’autocontrols basats en el Sistema d’Anàlisi de Perills i Punts de Control Crític (APPCC) dirigit als establiments alimentaris, la seva extensió als sectors que es troben al principi de la cadena alimentària i la formació de tots els professionals que actuen al llarg del procés d’obtenció d’aliments. Document elaborat per experts en el control oficial i en la verificació i la supervisió de sistemes d’autocontrol del Departament de Salut i de l’Agència de Salut Pública de Barcelona. L'objectiu és la prevenció de riscos sanitaris associats al consum d’aliments i facilitarà als operadors dels establiments alimentaris l’aplicació real i efectiva d’autocontrols basats en el Sistema d’APPCC, per tal de produir aliments segurs

Short communication: The biological value of transition milk: analyses of immunoglobulin G, IGF-I and lactoferrin in primiparous and multiparous dairy cows

Colostrum (the first mammary gland secretion after calving) is known to contain high concentrations of nutrients as well as bioactive substances (including immunoglobulins, growth factors, and antimicrobial factors) to ensure neonatal survival. Due to its immunomodulatory, antibacterial, and antiviral activities, bovine colostrum has been used not only in calves but also in the prevention and treatment of human gastrointestinal and respiratory infections. Transition milk is the mammary secretion from the second milking to the sixth, which may contain these bioactive compounds to a lesser extent. The objective of the present study was to measure IGF-I, immunoglobulin G (IgG), and lactoferrin (LTF) concentrations in colostrum and transition milk of primiparous and multiparous cows to further assess its potential use in veterinary and nutraceutical applications. The results demonstrated that the concentrations of these three bioactive molecules decrease from the first milking to the tenth. Concentrations of IGF-I and LTF were greater in multiparous than in primiparous cows. Also, lactation number interacted with milking number in IGF-I, since primiparous cows had a smoother decline of IGF-I concentrations than multiparous ones. Overall, transition milk from the second milking showed a 46% decrease in the analysed colostrum bioactive molecules. Therefore, further studies are needed to apply this knowledge in neonate farm management practices or in developing pharmaceutical supplements from farm surpluses

Portable low-cost electronic nose based on surface acoustic wave sensors for the detection of BTX vapors in air

A portable electronic nose based on surface acoustic wave (SAW) sensors is proposed in this work to detect toxic chemicals, which have a great potential to threaten the surrounding natural environment or adversely affect the health of people. We want to emphasize that ferrite nanoparticles, decorated (Au, Pt, Pd) and undecorated, have been used as sensitive coatings for the first time in these types of sensors. Furthermore, the proposed electronic nose incorporates signal conditioning and acquisition and transmission modules. The electronic nose was tested to low concentrations of benzene, toluene, and xylene, exhibiting excellent performance in terms of sensitivity, selectivity, and response time, indicating its potential as a monitoring system that can contribute to the detection of toxic compounds.This work was supported by the Fundación General CSIC via Programa ComFuturo and the Spanish Ministry of Science, Innovation and Universities under the projects RTI2018-095856-B-C22 (AEI/FEDER) and TEC2016-79898-C6 (AEI/FEDER).Peer reviewe

Optimized design of a SAW sensor array for chemical warfare agents simulants detection

Chemical warfare agent simulants detection is of great interest for security reasons. An electronic nose based on Surface Acoustic Wave (SAW) sensors has been developed and sensor polymer coatings have been optimized. These allowed us to detect very low concentrations of certain simulants. A good classification was achieved.This work is being supported by the Spanish Education and Science Ministry under the project TEC2007-67962- C04-02.Peer reviewe

High-Performance Ammonia Sensor at Room Temperature Based on a Love-Wave Device with Fe2O3@WO3−x Nanoneedles

An innovative, simple and inexpensive Love-wave gas sensor based on Fe2O3@WO3−x nanoneedles to detect the variation of ammonia at room temperature was developed. The nanoneedles were successfully formed on Love-wave device via aerosol-assisted chemical vapor deposition (AACVD). The nanoneedles worked as guiding and sensitive layers detecting the changes of the elastic properties presented by ammonia interaction. The sensor was tested to ammonia concentrations between 25 to 90 ppm and showed large frequency shifts, high sensibility, short response time and good reproducibility.This research is supported by project DGAPA-PAPIIT IA-103016 from Universidad Nacional Autónoma de México and the projects TEC-2013-48147 (AEI/FEDER, EU) and TEC2015-74329-JIN (AEI/FEDER, EU) from Ministerio de Economía y Competitividad of Spain. In addition, F. A. Bahos thanks Programa de Posgrado en Ingeniería- UNAM and CONACYT for Master studies grant

L'Autocontrol als establiments alimentaris: guia per a l'aplicació de l'autocontrol basat en el Sistema d'Anàlisi de Perills i Punts de Control Crític

Autocontrol; APPCC; Establiments alimentarisAutocontrol; APPCC; Establecimientos alimentariosSelf-control; HACCP; Food EstablishmentsGuía para el diseño y la aplicación por parte de las empresas alimentarias de autocontroles basados en el Sistema de Análisis de Peligros y Puntos de Control Crítico (APPCC) dirigido a los establecimientos alimentarios, su extensión a los sectores que se encuentran al principio de la cadena alimentaria y la formación de todos los profesionales que actúan a lo largo del proceso de obtención de alimentos. Documento elaborado por expertos en el control oficial y en la verificación y la supervisión de sistemas de autocontrol del Departamento de Salud y de la Agencia de Salud Pública de Barcelona. El objetivo es la prevención de riesgos sanitarios asociados el consumo de alimentos y facilitará a los operadores de los establecimientos alimentarios la aplicación real y efectiva de autocontroles basados en el Sistema de APPCC para producir alimentos seguros.Guia per al dissey i l'aplicació per part de les empreses alimentàries d’autocontrols basats en el Sistema d’Anàlisi de Perills i Punts de Control Crític (APPCC) dirigit als establiments alimentaris, la seva extensió als sectors que es troben al principi de la cadena alimentària i la formació de tots els professionals que actuen al llarg del procés d’obtenció d’aliments. Document elaborat per experts en el control oficial i en la verificació i la supervisió de sistemes d’autocontrol del Departament de Salut i de l’Agència de Salut Pública de Barcelona. L'objectiu és la prevenció de riscos sanitaris associats al consum d’aliments i facilitarà als operadors dels establiments alimentaris l’aplicació real i efectiva d’autocontrols basats en el Sistema d’APPCC, per tal de produir aliments segurs