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Water treatment in food industry النص الكامل
2018
Krasnova T.
The author considered the contemporary state of the issue of water treatment in food and beverages production. The article presents regulated water quality parameters for drinking and bottled water, for dairy industry, beer and soft drinks production, as well as for production of vodka, vodka for export, and baby food. The article shows that water from central utility and drinking water supply needs additional treatment to produce food and beverages. It should be cleaned from hardness salts, iron, manganese, mineral salts, organic compounds and microbial contamination. Besides, many companies use groundwater sources (from wells). That makes water treatment procedure even more complicated. The author considered such treatment methods as ion exchange, magnetic water treatment, catalyzed oxidation, deferrization using sorption-filtering materials from mineral raw materials, aeration, reverse osmosis, electrodialysis, activated carbon adsorption. The author shows the treatment mechanisms, their advantages and disadvantages. The article indicates which materials and equipment can be used to apply these methods in water treatment practice. It describes new techniques for effective water treatment such as radiolysis, cavitation and advanced oxidation treatment techniques. It gives flow diagram of bottled water production depending on its origin and content of impurities which is used by the companies working in Gelendzhiksky district, Lipetsk and Kemerovo. The author analyzed the contemporary state of the issue of water treatment in food and beverages production companies based on the available information and assessed the technical level of water treatment systems. The article reveals that only companies which produce alcoholic drinks such as vodka, liquors, and beer use a number of water treatment procedures which meet modern requirements. In general, food production companies face water treatment issue. Labor intensive, expensive and non-environmentally friendly water treatment methods are used everywhere. But they do not always guarantee required water quality. For that reason water treatment schemes in food industry should be revised. The author gives recommendations to replace traditional technologies with modern ones.
اظهر المزيد [+] اقل [-]An update of US food safety, food technology, GM food and water protection and management legislation النص الكامل
2006
Arvanitoyannis, Ioannis | Tserkezou, Persefoni | Varzakas, Theodoros
US government was the first to introduce Hazard Analysis Critical Control Point, the system that had a tremendous impact on everybody's life starting from the food and packaging companies up to consumer themselves. The rest of the nations simply followed US approach with a considerable delay both in terms of legislation and implementation. In the case of genetically modified (GM) or genetically engineered foods, the situation was entirely different. United States benefited from the 'dubious', and definitely not proved, 'substantial equivalence' principle invoked as the most practical approach to assess the safety of GM foods and food ingredients. US legislation appeared to be considerably more lenient than the European Union. The latter required many more analyses and labelling of GM food or food components. In this article, an update is attempted of the entire US legislation falling in fields like food safety, food technology, GM foods and finally legislation referring to specific foods (animal origin - meat, poultry, fish, dairy; and agricultural produces - vegetables, fruits) and water quality by means of fourteen comprehensive tables.
اظهر المزيد [+] اقل [-][Waste water pretreatment in dairy, food and beverage plants]
1998
Vogel, P.
Nach der Bestandsaufnahme der tatsachlichen Abwassersituation eines Betriebes und den durchzufuhrenden innerbetrieblichen Massnahmen zur Verringerung der Abwasserbelastung muss die Zielsetzung "eigene Vorreinigung", "Einkauf bei kommunalen Abwasserreinigungsanlagen" oder "Vollreinigung" anhand von Kosten- und Systemvergleichen klar definiert werden. Im ersten Teil werden verschiedene Moglichkeit der Vorreinigung von Abwasser vorgestellt. Dazu zahlen die mechanische Vorbereitung,die biologische Neutralisation sowie die Neutralisation mit Ausgleichsmassnahmen. Fur Abwasser der Mokerei- und Getrankeindustrie eignen sich vor allem anaerobe Vorreinigungsverfahren. Eine anaerobe Biofilteranlage wird beschrieben. Die Systemauswahl richtet sich nach den individuellen Anforderungen des jeweiligen Lebensmittel- und Getrankebetriebs, den spezifischen derzeitigen und zu erwartenden Abwasserkosten, den Zukunftsperspektiven und der Lage des Betriebes.
اظهر المزيد [+] اقل [-]Developing Capacities for Implementing the Water-Energy-Food Nexus النص الكامل
2015
Czunyi, Sarah | Thiam, Djiby Racine
The novelty of the W-E-F nexus approach, given that it requires new coordination mechanisms within and between institutions and disciplines, requires new forms and types of capacities in order to be effective. This paper identifies some of the existing capacity gaps and measures to address those gaps, in order to ensure a successful implementation of the W-E-F nexus approach. Capacity development for the nexus requires a variety of mechanisms from the individual to institutional levels. To successfully put the W-E-F nexus into practice we should build on the strengths of existing mechanisms, while also improving coordination and integration of seemingly divergent approaches in the water, energy, and food sectors. Capacity development within and between sectors will be key to a successful implementation of the W-E-F nexus approach.
اظهر المزيد [+] اقل [-]Characteristics and use of electrolyzed water in food industries النص الكامل
2018
Campagnol, P. C. B. | Menezes, C. R. | Cichoski, A. J. | Genro, A. L. G. | Silva, M. S. | Flores, D. R. M. | Athayde, D. R. | Silva, J. S. | Wagner, R.
Electrolyzed water (EW) is a new technology that emerged in the last years with potential application in foods, mainly in microbiological aspects, with variation in application modes, dipping the food in solution, where variation of time can be changed and be apply in the form of spray. Because EW characteristics, its action in microorganisms are still been studied for mechanism elucidation and possible damages, as well its influence in the intrinsic characteristics of food, like color and oxidation. This unconventional or ‘green’ technology has the purpose to prove microbiological quality of food and decrease the use of natural resources like water with minimal generation of chemical/toxic residues. More studies are necessary in relation to this technology and its possible applications in food industry, as well characteristics and mechanisms.
اظهر المزيد [+] اقل [-]Electrolyzed Water and Its Application in the Food Industry
2008
Hricova, D. | Stephan, R. | Zweifel, C.
Electrolyzed water (EW) is gaining popularity as a sanitizer in the food industries of many countries. By electrolysis, a dilute sodium chloride solution dissociates into acidic electrolyzed water (AEW), which has a pH of 2 to 3, an oxidationreduction potential of >1,100 mV, and an active chlorine content of 10 to 90 ppm, and basic electrolyzed water (BEW), which has a pH of 10 to 13 and an oxidation-reduction potential of -800 to -900 mV. Vegetative cells of various bacteria in suspension were generally reduced by >6.0 log CFU/ml when AEW was used. However, AEW is a less effective bactericide on utensils, surfaces, and food products because of factors such as surface type and the presence of organic matter. Reductions of bacteria on surfaces and utensils or vegetables and fruits mainly ranged from about 2.0 to 6.0 or 1.0 to 3.5 orders of magnitude, respectively. Higher reductions were obtained for tomatoes. For chicken carcasses, pork, and fish, reductions ranged from about 0.8 to 3.0, 1.0 to 1.8, and 0.4 to 2.8 orders of magnitude, respectively. Considerable reductions were achieved with AEW on eggs. On some food commodities, treatment with BEW followed by AEW produced higher reductions than did treatment with AEW only. EW technology deserves consideration when discussing industrial sanitization of equipment and decontamination of food products. Nevertheless, decontamination treatments for food products always should be considered part of an integral food safety system. Such treatments cannot replace strict adherence to good manufacturing and hygiene practices.
اظهر المزيد [+] اقل [-]Biological cleansing of highly polluted food industry effluent water.
1994
Functional properties of water in food | Propriétés fonctionnelles de l'eau dans les aliments
2001
Le Meste, M. ((Ecole Nationale Supérieure de Biologie Appliquée à la Nutrition et à l'Alimentation, Dijon (France). Laboratoire d'Ingénierie Moléculaire et Sensorielle de l'Aliment)) | Roudaut, G. | Chiotelli, E. | Sirnatos, D. | Colas, B.
L'eau intervient à de multiples niveaux dans la qualité et la stabilité des aliments. L'eau établit des interactions de différentes natures avec les ingrédients alimentaires, et c'est l'équilibre entre ces interactions et les interactions, ou liaisons, entre solutés de petite taille et/ou macromolécules qui contrôle la structure et la stabilité des ingrédients et des colloïdes alimentaires. Solvant des réactants, plastifiant du milieu de réaction et réactant, l'eau participe aux réactions se produisant pendant la transformation et la conservation des aliments. Il est bien connu que le développement des microorganismes responsables de l'altération des aliments est fonction des propriétés thermodynamiques de l'eau (activité de l'eau, pression osmotique). Les mécanismes qui contrôlent la vitesse des réactions chimiques ou de transformation physiques dans les milieux concentrés, voir solides, sont complexes et les modèles de prédiction sont rares et parfois controversés. Le concept de transition vitreuse de plus en plus utilisé en technologie des aliments est présenté succinctement dans cet article. Des exemples montrent l'intérêt de connaître le diagramme d'état de constituants alimentaires, c'est à dire l'état physique en fonction des conditions de température et d'hydratation, pour la maîtrise des opérations de transformation et de conservation des aliments
اظهر المزيد [+] اقل [-]China’s sustainable water-energy-food nexus by 2030: Impacts of urbanization on sectoral water demand النص الكامل
2020
Niva, Venla | Cai, Jialiang | Taka, Maija | Kummu, Matti | Varis, Olli
In the context of China’s rapid and perennial urbanization, it is of profound importance to understand how to enable and accelerate progress towards achieving the country’s sustainable water-energy-food nexus by 2030. In this study, a quantitative spatial scenario analysis was performed to identify the provinces that are expected to experience changes in water stress, under the competition for water between food and energy sectors. The results manifested an imbalance of water availability for meeting the demand between those two sectors. First, food sector played the leading role in the baseline water stress. Second, energy sector dominates the increases of the projected water stress index. Third, urbanization is projected to substantially affect the extent of water availability, especially in the eastern provinces. Tackling imbalanced sectoral water demand is the key to China’s sustainable water-energy-food nexus, which shall require some corresponding changes in national policy-making. China needs, first, policy coherence and synergies, second, ensuring the adequacy of any follow-up procedures, and third, embracing greater participation and transparency in policy-making.
اظهر المزيد [+] اقل [-]Application of HACCP to water reuse in the food industry النص الكامل
2002
Casani, Sandra | Knøchel, Susanne
Reuse of water in the food industry is attracting much attention due to the increasing cost of water and water discharge. A major obstacle for extensive reuse is the associated risk of microbiological contamination of food and the production environment. A hazard analysis critical control point based generic model has, therefore, been elaborated for implementation and evaluation of systems for the reuse of water in the food industry. The model includes information on food and water borne pathogens and their sensitivity towards various water treatment methods. Previous implementation of the pre-requisite programs and combination of knowledge from very different research areas are also required for safe implementation of water reuse in the food industry.
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