Narrow your search
Listing 1 - 4 of 4
Sort by

Book
Exploring bacterial colonies in solid foods or model foods using non-destructive techniques
Authors: --- --- ---
ISBN: 9782889197439 Year: 2016 Publisher: Frontiers Media SA

Loading...
Export citation

Choose an application

Bookmark

Abstract

Bacteria are always present in foods, whether they are indigenous or inoculated. They can be beneficial to the quality of foods, responsible for food spoilage, or even pathogens. In solid food products, bacteria are immobilized. They thus grow as colonies within the food products or on the food surfaces. The study of bacterial immobilization in colonies was begun in the 1970s by only two UK research teams. Nowadays, new approaches using non-destructive techniques allow investigation of dynamic evolution at the spatial and microscopic levels in solids. However, the literature dealing with bacterial colonies is few and far between if we exclude the literature concerning biofilms. We here consider as bacterial colonies, and not biofilms, discontinued colonies growing on food surfaces and not abiotic surfaces. Predictive models for bacterial growth are built from growth in liquid media and are not accurate for immobilized bacteria growing as colonies. Further knowledge is now needed about the potential consequences of cell immobilization. On one hand, growth and physiology of the cells growing as colonies can be influenced by the microenvironment around the colony. On the other hand, the cells within the colony can in return modify the microenvironment due to their metabolic activities (changes in pH and redox potential, proteolysis,… etc). Indeed, nutrients must diffuse within the food matrix to the colony to be available for the cells within the colony, while the metabolites must diffuse out of the colony to the food matrix to avoid accumulation. These interactions between the colony and the food matrix may lead to a micro-heterogeneity either around the colony or within the colony. Non-destructive techniques should be used to study the adaptive response to the microenvironment of immobilized cells within the colony. They are needed to investigate the spatio-temporal evolution of the colony (growth, size, shape) and its metabolic activities (micro-heterogeneity of pH, diffusion of metabolites, gene expression). The most commonly used technique is fluorescence microscopy and especially confocal laser scanner microcopy with specific probes. In addition, physical techniques such as elastic scattering or micro-calorimetry have been used to study the growth and metabolism of bacterial colonies in model foods. Furthermore, the observation of colony growth in microscopic imaging chambers dedicated to microscope examination allows the modeling of growth parameters of immobilized bacteria in colonies.


Book
Inventing baby food
Author:
ISBN: 9780520959149 0520959140 9781322071367 1322071365 0520277376 9780520277373 9780520277373 9780520283459 0520283457 9780520283459 Year: 2014 Publisher: Berkeley

Loading...
Export citation

Choose an application

Bookmark

Abstract

Food consumption is a significant and complex social activity-and what a society chooses to feed its children reveals much about its tastes and ideas regarding health. In this groundbreaking historical work, Amy Bentley explores how the invention of commercial baby food shaped American notions of infancy and influenced the evolution of parental and pediatric care. Until the late nineteenth century, infants were almost exclusively fed breast milk. But over the course of a few short decades, Americans began feeding their babies formula and solid foods, frequently as early as a few weeks after birth. By the 1950's, commercial baby food had become emblematic of all things modern in postwar America. Little jars of baby food were thought to resolve a multitude of problems in the domestic sphere: they reduced parental anxieties about nutrition and health; they made caretakers feel empowered; and they offered women entering the workforce an irresistible convenience. But these baby food products laden with sugar, salt, and starch also became a gateway to the industrialized diet that blossomed during this period. Today, baby food continues to be shaped by medical, commercial, and parenting trends. Baby food producers now contend with health and nutrition problems as well as the rise of alternative food movements. All of this matters because, as the author suggests, it's during infancy that American palates become acclimated to tastes and textures, including those of highly processed, minimally nutritious, and calorie-dense industrial food products.


Book
Ggo's : droom of nachtmerrie?
Authors: --- ---
ISBN: 9789089242228 Year: 2012 Publisher: Antwerpen Houtekiet

Loading...
Export citation

Choose an application

Bookmark

Abstract

Telkens als mensen over genetisch gemanipuleerde gewassen praten, worden diverse aspecten door elkaar gehaald. Het gaat om kweekrechten, patenten, de macht van multinationals. Maar ook om de bijdrage die ggo's kunnen leveren aan de ontwikkeling van de landbouw, niet het minst omwille van de toenemende wereldbevolking en omdat opkomende landen uit het Zuiden steeds meer een westers consumptiepatroon aannemen. Het gaat ook om fundamenteel onderzoek en (het gebrek aan) onafhankelijkheid. Het gaat om het gebruik van pesticiden en milieuvervuiling, de rechten van de consument, de bedreigde autonomie van boeren, maar ook over agro-ecologie en biotechnologie.

Keywords

Environmental protection. Environmental technology --- biotechnologie --- genetische manipulatie --- ggo's --- landbouw --- landbouwgewassen --- ethiek --- BPB1210 --- GGO's --- 475 Landbouw --- Genetische manipulatie --- Biotechnologie --- Organisme génétiquement modifié --- 613.29 --- Agroalimentaire --- Homme politique |x Politicus |y EUROVOC (0436) --- Genetisch gemodificeerd organisme --- Other solid foods. Artificial foods --- Landbouw en voeding --- Transgenic organisms --- Genetic engineering --- Moral and ethical aspects --- Voeding --- Voedselprobleem --- poľnohospodársko-potravinársky sektor --- poljoprivredno-prehrambena industrija --- prodotti agroalimentari --- artikuj agroushqimore --- agroalimentar --- пољопривредно-прехрамбена индустрија --- lauksaimniecības produkti --- agri-foodstuffs --- landbrugsfødevareindustri --- zemědělsko-potravinářský sektor --- maatalouselintarvikkeet --- jordbrukslivsmedelsindustri --- põllumajanduslikud toiduained --- žemės ūkio ir maisto produktų gamyba --- земјоделско-прехранбен сектор --- landbouw en voeding --- агропродоволствен сектор --- produs agro-alimentar --- gospodarka żywnościowa --- agrár-élelmiszeripar --- αγροδιατροφικός τομέας --- kmetijsko-živilski sektor --- Landwirtschafts- und Ernährungssektor --- industria agroalimentaria --- industria agroalimentare --- rețea agroalimentară --- pārtikas aprite --- jordbrukslivsmedelsindustrins kedja --- žemės ūkio maisto produktų gamyba --- žemės ūkio maisto produktų gamybos kompleksas --- zinxhir i artikujve ushqimorë bujqësorë --- poľnohospodársko-potravinársky komplex --- Agrar- und Nahrungsmittelkomplex --- forarbejdning af landbrugsprodukt --- agro-alimentaire --- landbouw- en voedingsbedrijf --- Vermarktung von Agrarprodukten --- comercialización de productos agroalimentarios --- agrárélelmiszer-gyártás --- Absatzweg für Produkte des Landwirtschafts- und Ernährungssektors --- βιομηχανία γεωργικών προϊόντων διατροφής --- poljoprivredno-prehrambeni industrijski lanac --- agri-foodstuffs chain --- circuito agro-alimentare --- zemědělsko-potravinářský komplex --- maatalouselintarvikekierto --- põllumajanduslike toiduainete ringlus --- circuit agroalimentaire --- organizëm i ndryshuar gjenetikisht --- genetički promijenjen organizam --- γενετικά τροποποιημένος οργανισμός --- organiżmu ġenetikament modifikat --- geneettisesti muunnettu organismi --- geneticky upravený organizmus --- генетично модифициран организъм --- organismo geneticamente modificato --- genetically modified organism --- genetisch gemodificeerd organisme --- OGM --- genetiskt modifierad organism --- генетски модификован организам --- géntechnológiával módosított szervezet --- genetsko spremenjen organizem --- organismo geneticamente modificado --- genetisk modificeret organisme --- genetisch veränderter Organismus --- genetiškai modifikuotas organizmas --- organism modificat genetic --- генетски модификуван организам --- geneticky modifikovaný organismus --- ģenētiski pārveidots organisms --- organismo genéticamente modificado --- geneetiliselt muundatud organism --- organizm genetycznie zmodyfikowany --- organzëm transgjenetik --- βιοτεχνολογική εφεύρεση --- ГМО --- biotechnologický vynález --- shpikje bioteknologjike --- biotechnologinis išradimas --- creación biotecnológica --- GVO --- gensplejset organisme --- invenção biotecnológica --- GGO --- organismo modificado genéticamente --- OMGJ --- GMO --- gentekniskt modifierad organism --- biotechnologische Erfindung --- genetiškai pakeistas organizmas --- organismos transgénicos --- genotyp --- organisme transgénique --- organism alterat genetic --- organismo transgenico --- génmanipulált szervezet --- invention biotechnologique --- invenție biotehnologică --- transgēns organisms --- διαγονιδιακός οργανισμός --- transgen organism --- biotechnologický objav --- transgēnu dzīvnieks --- geneetiliselt muudetud organism --- geneticky změněný organismus --- генетски модификувани микроорганизми --- gentechnisch veränderter Organismus --- ģenētiski modificēti augi --- ĢMO --- genetically altered organism --- bioteknologisk opfindelse --- organism transgenic --- biotechnologische uitvinding --- geneetiliselt modifitseeritud organism --- organismo geneticamente alterado --- genetički modificiran organizam --- genetikailag módosított szervezet --- transgenní organismus --- biotehnoloģisks izgudrojums --- GMSZ --- biotechnological invention --- ģenētiski modificēts organisms --- transgeninis organizmas --- bioteknisk uppfinning --- transzgenikus szervezet --- orgánach géinathraithe --- transgeenne organism --- geneticky pozměněný organismus --- biotehnoloogiline leiutis --- invenzione biotecnologica --- genetické upravovanie --- organismo transgénico --- biotekninen keksintö --- ГММ --- transgenic organism --- OMG --- ΓΤΟ --- transgeeninen organismi --- biotehnologija --- biotechnology --- biotehnoloģija --- bioteknik --- βιοτεχνολογία --- biteicneolaíocht --- biotechnologija --- biotecnología --- bioteknologji --- биотехнология --- биотехнологија --- biotechnologia --- biotechnológia --- biotehnoloogia --- biotehnologie --- biotekniikka --- bioteknologi --- biotecnologia --- bijoteknoloġija --- βιολογική μηχανική --- sviluppo biotecnologico --- биолошки инженеринг --- biotechnika --- biologické inženýrství --- biotehnika --- bioengineering --- bioingegneria --- Biotechnik --- bioinxhinieri --- биоинженеринг --- биотехнолошки инженеринг --- bioinginerie --- bioinžinierstvo --- biotecnologia di base --- bio-engineering --- ricerca biotecnologica --- bioinženierija --- bioinženjering --- bioengenharia --- biomedicinsk teknik --- bioingénierie --- nuove biotecnologie --- bioinžinerija --- bioingeniería --- agrai-bhia-ábhair --- orgánach géinmhodhnaithe --- Drank --- Gezondheid --- Organisme génétiquement modifié

Listing 1 - 4 of 4
Sort by