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Opportunistic Water-Borne Human Pathogenic Filamentous Fungi Unreported from Food 全文
2018
Monika Novak Babič | Jerneja Zupančič | João Brandão | Nina Gunde-Cimerman
Clean drinking water and sanitation are fundamental human rights recognized by the United Nations (UN) General Assembly and the Human Rights Council in 2010 (Resolution 64/292). In modern societies, water is not related only to drinking, it is also widely used for personal and home hygiene, and leisure. Ongoing human population and subsequent environmental stressors challenge the current standards on safe drinking and recreational water, requiring regular updating. Also, a changing Earth and its increasingly frequent extreme weather events and climatic changes underpin the necessity to adjust regulation to a risk-based approach. Although fungi were never introduced to water quality regulations, the incidence of fungal infections worldwide is growing, and changes in antimicrobial resistance patterns are taking place. The presence of fungi in different types of water has been thoroughly investigated during the past 30 years only in Europe, and more than 400 different species were reported from ground-, surface-, and tap-water. The most frequently reported fungi, however, were not waterborne, but are frequently related to soil, air, and food. This review focuses on waterborne filamentous fungi, unreported from food, that offer a pathogenic potential.
显示更多 [+] 显示较少 [-]Nature-based solutions for agricultural water management and food security 全文
2018
Sonneveld, B.G.J.S. | Merbis, M.D. | Alfarra, A. | Ünver, O. | Arnal, M.F.
Accessibility to clean and sufficient water resources for agriculture is key in feeding the steadily increasing world population in a sustainable manner. Nature-Based Solutions (NBS) offer a promising contribution to enhance availability and quality of water for productive purposes and human consumption, while simultaneously striving to preserve the integrity and intrinsic value of the ecosystems. Implementing successful NBS for water management, however, is not an easy task since many ecosystems are already severely degraded, and exploited beyond their regenerative capacity. Furthermore, ecosystems are large and complex and the many stakeholders involved might have conflicting interests. Hence, implementation of NBS requires a structured and comprehensive approach that starts with the valuation of the services provided by the ecosystem. The whole set of use and non-use values, in monetary terms, provides a factual basis to guide the implementation of NBS, which ideally is done according to transdisciplinary principles, i.e. complemented with scientific and case-specific knowledge of the eco-system in an adaptive decision-making process that involves the relevant stakeholders. This discussion paper evaluated twenty-one NBS case studies using a non-representative sample, to learn from successful and failed experiences and to identify possible causalities among factors that characterize the implementation of NBS. The case studies give a minor role to valuation of ecosystem services, an area for which the literature is still developing guidance. Less successful water management projects tend to suffer from inadequate factual and scientific basis and uncoordinated or insufficient stakeholder involvement and lack of long term planning. Successful case studies point to satisfactory understanding of the functioning of ecosystems and importance of multi-stakeholder platforms, well-identified funding schemes, realistic monitoring and evaluation systems and endurance of its promoters.
显示更多 [+] 显示较少 [-]Discussion of “Challenges in operationalizing the water–energy–food nexus” 全文
2018
Varis, Olli | Keskinen, Marko
We greatly enjoyed reading the paper by Liu et al., which is both timely and rich in insight, as it discusses the challenges in operationalizing the water–energy–food security (WEF) nexus. The nexus approach is gaining increasing attention, both in research and in policy documents, as reflected in the number and content of published documents in the past years and highlighted by the authors.
显示更多 [+] 显示较少 [-]The impact of water scarcity on food, bioenergy and deforestation 全文
2018
Winchester, N. (Niven) | Ledvina, Kirby | Strzepek, Kenneth | Reilly, John M.
We evaluate the impact of explicitly representing irrigated land and water scarcity in an economy‐wide model with and without a global carbon policy. The analysis develops supply functions of irrigable land from a water resource model for 282 river basins and applies them within a global economy‐wide model. The analysis reveals two key findings. First, explicitly representing irrigated land has a small impact on global food, bioenergy and deforestation outcomes. This is because this modification allows irrigated and rainfed land to expand in different proportions, which counters the effect of rising marginal costs for the expansion of irrigated land. Second, changes in water availability have small impacts on global food prices, bioenergy production, land use change and the overall economy, even with large‐scale (c. 150 exajoules) bioenergy production, due in part to endogenous irrigation and storage responses. However, representing water scarcity and changes in water availability can be important regionally, with relatively arid areas and/or areas with rapidly growing populations fully exhausting our estimated maximum irrigation capacity that allows for improved irrigation efficiency, lining of canals to limit water loss, and expanding storage to fully capture average annual water flows.
显示更多 [+] 显示较少 [-]Emulsões alimentares inversas. Desenvolvimento de novos produtos | Water-in-oil food emulsions.new products development 全文
2018
Lima, Maria Gabriela Basto de | Ganhão, Sofia | Santos, Maria João | Ruivo, P. | Mota de Oliveira, Maria Adelaide
O sucesso no desenvolvimento de novos produtos alimentares, por substituição total ou parcial de determinados lípidos por congéneres de origem vegetal e seus subprodutos (ex. polímeros), baseiase na garantia da manutenção ou melhoria das características sensoriais dos produtos tradicionais, relativamente aos quais se quer inovar, bem como da estabilidade do produto durante um prazo tido por suficiente. Os cremes de barrar são basicamente emulsões de água-em-óleo (a/o), assemelham-se à manteiga na sua aparência, consistência e composição. A fase lipídica normalmente é uma mistura de óleos vegetais e/ou óleos e gorduras de origem animal contendo corantes naturais (-caroteno), estabilizantes, emulsionantes, aromatizantes, antioxidantes, lecitinas e vitaminas lipossolúveis. A fase aquosa contém proteínas, leite desnatado, onde podem ser incorporadas pequenas quantidades de outros ingredientes, tais como o sal, conservantes, espessantes e vitaminas hidrossolúveis. Presentemente, existe uma enorme quantidade de estudos de caracterização de emulsões alimentares de óleo-em-água (o/a) e esta abundância contrasta com a enorme escassez de estudos análogos sobre emulsões água-em-óleo (a/o). | info:eu-repo/semantics/publishedVersion
显示更多 [+] 显示较少 [-]Food processing industry energy and water consumption in the Pacific northwest 全文
2018
Compton, Marc | Willis, Sarah | Rezaie, Behnaz | Humes, Karen
The food processing industry is one of the largest consumers of energy and water in the manufacturing sector. It is vital that conservation measures are taken to reduce the use of electricity, fuel, and water for producers to have long-term, sustainable growth. The Pacific Northwest (PNW) region includes some the largest food processers in the United States, particularly with products such as fruit and vegetable preserves, apples products, potato products, and milk. Energy and water consumption in PNW food processing facilities are quantified as well as techniques to increase efficiency and reduce waste. Mechanical drive systems and refrigeration consumes the most electricity in the industry and the implementation of energy management plans has the largest potential to save electricity in PNW facilities. Heating and cooling process needs are the largest consumers of energy in the food processing industry. Implementing cogeneration/trigeneration technology, replacing of older equipment, capturing waste heat, and reusing wastewater can have significant impacts on both energy and water consumption. Novel, emerging technologies such as membrane separation, high-pressure processing, microwave assist, ultrasound, pulsed high electric fields, ozone, and hydrogen/electricity generation have significant potential to benefit the food processing industry by increasing efficiency and allowing companies to stay competitive in an industry where sustainable practices are becoming increasingly important to the public.
显示更多 [+] 显示较少 [-]Agricultural development in Ecuador: A compromise between water and food security? 全文
2018
Salmoral, Gloria | Khatun, Kaysara | Llive, Freddy | Lopez, Cristina Madrid
Ecuador is facing several threats to its food and water security, with over a tenth of its population currently undernourished and living in poverty. As a response, its government is incorporating new patterns of land use and developing regional water infrastructure to cope with the related challenges. In this study, we assess to what point these efforts contribute to integrated water and food security in the country. We investigated the period 2004–2013 in the most productive agricultural region - the Guayas river basin district (GRBD) - and analysed the impacts of different scenarios of agricultural change on local water security. Our approach integrates MuSIASEM (Multi-Scale Integrated Analysis of Societal and Ecosystem Metabolism) with the hydrological SWAT model. Freshwater allocation is evaluated within all the water cycle from its source (natural systems) to the final users (societal systems). Water security is assessed spatiotemporally in terms of water stress for the population living in poverty. Water productivity is obtained in relation to agricultural production and nutrition. The multi-scale analysis shows that whereas at river basin district level the median annual streamflow has a similar magnitude than rainfall stored in soil, these two parameters differ spatiotemporally at subbasin level. The study finds the greatest challenge in achieving water security is the south-east and central part of the GRBD, due to water scarcity and a larger population living in poverty. However, these areas are also simultaneously, where the greatest crop water productivity is found. We conclude that food production for both domestic consumption and market-oriented exports can be increased while meeting ecosystem water demands in all the GRBD regions except for the east. Our integration of methods provides a better approach to inform integrated land and water management and is relevant for academics, practitioners and policymakers alike.
显示更多 [+] 显示较少 [-]ECONOMICS OF WATER RESOURCES FOR ACHIEVING THE FOOD SAFE IN EGYPT 全文
2018
M. Mohamed | M. El-Edemy | B. Morsi
The issue of water resources using which make the best using stayed one of the most important issue which Egyptian society suffer from on the two levels individual and national . The research depended for a achieving his goals on the discriptive and statistical method which representative on linear programmar method and the researcher depended on the data which be published by research associations such as the central agency for the general mobilization and statistics and ministry of agriculture and reclaimation the lands. The research showed that the limitations of crops combination are (the agricultural land – the water resources) and the constraints which be used in linear programmar model are (crops area- feddan return net) and by the looking for the actual crops combination we can observe that it consist of (42 crops divided into (17 winter crops – 13 summer crops- 6 nile crops- 6 fruits) and from the research results showed that the gross water amount was (46271.5) million m3 and the water amount for the winter crops was (14870.7) million m3 and the water amount for the summer crops was (23552.6) million m3 whereas the nile crops was (1041) million m3 and the fruits was (6807.2) million m3 and which related to the crops area the results showed that the gross area was (13678254.7) feddan and the winter crops was (6613977.2) feddan whereas the summer crops was (5325536.7) feddan and the nile crops was (392740.8) and which related to the fruits was (1246000) feddan
显示更多 [+] 显示较少 [-]Unpacking the nexus: Different spatial scales for water, food and energy 全文
2018
Bijl, David L. | Bogaart, Patrick W. | Dekker, Stefan C. | van Vuuren, Detlef P.
Recent years have shown increased awareness that the use of the basic resources water, food, and energy are highly interconnected (referred to as a ‘nexus’). Spatial scales are an important but complicating factor in nexus analyses, and should receive more attention – especially in the policy-oriented literature. In this paper, we ‘unpack' the nexus concept, aiming to understand the differences between water, food and energy resources, especially in terms of spatial scales. We use physical indicators to show the differences in terms of absolute magnitude of production and the distance and volume of physical trade, for seven resource categories: water withdrawal, crops, animal products, bio-energy, coal, oil, and natural gas. We hypothesize that the differences in trade extent are related to physical characteristics of these resources: we expect high priced, high density, geographically concentrated resources to be traded more and over longer distances. We found that these factors, taken together, can explain some of the differences in trade extent (and thus spatial scale involved), although for each individual factor there are exceptions. We further explore the spatial scales by showing the bidirectional physical trade flows at the continental scale for crops, animal products, bio-energy and fossil fuels. We also visualize how nexus resources are directly dependent on each other, using a Sankey diagram. Since both direct dependencies and physical trade are present, we investigate the role of resource-saving imports, which is a form of virtual trade. The resource-saving imports highlight the importance of continental and global scales for nexus analyses.
显示更多 [+] 显示较少 [-]Agricultural development in Ecuador: A compromise between water and food security? 全文
2018
Salmoral, Gloria | Khatun, Kaysara | Llive, Freddy | Madrid Lopez, Cristina
Ecuador is facing several threats to its food and water security, with over a tenth of its population currently undernourished and living in poverty. As a response, its government is incorporating new patterns of land use and developing regional water infrastructure to cope with the related challenges. In this study, we assess to what point these efforts contribute to integrated water and food security in the country. We investigated the period 2004–2013 in the most productive agricultural region - the Guayas river basin district (GRBD) - and analysed the impacts of different scenarios of agricultural change on local water security. Our approach integrates MuSIASEM (Multi-Scale Integrated Analysis of Societal and Ecosystem Metabolism) with the hydrological SWAT model. Freshwater allocation is evaluated within all the water cycle from its source (natural systems) to the final users (societal systems). Water security is assessed spatiotemporally in terms of water stress for the population living in poverty. Water productivity is obtained in relation to agricultural production and nutrition. The multi-scale analysis shows that whereas at national level the median annual streamflow has a similar magnitude than rainfall stored in soil, these two parameters differ spatiotemporally at subbasin level. The study finds the greatest challenges in achieving water security is the south-east and central part of the GRBD, due to water scarcity and a larger population living in poverty. However, these areas are also simultaneously, where the greatest crop water productivity is found. We conclude that food production for both domestic consumption and market-oriented exports can be increased while meeting ecosystem water demands in all the GRBD regions except for the east. Our integration of methods provide a better approach to inform integrated land and water management and is relevant for academics, practitioners and policymakers alike.
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