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Staphylococci in food water origin
2001
Daczkowska-Kozon, E. (Akademia Rolnicza, Szczecin (Poland). Zaklad Mikrobiologii Zywnosci) | Lapinska, K. (Akademia Rolnicza, Szczecin (Poland). Zaklad Higieny Weterynaryjnej) | Dabrowski, W. | Koronkiewicz, A. | Zawodna, L.
A total of 958 samples of raw fish, fish products and "frutti di mare" were tested for staphylococci. Among 153 strains isolated and subjected to identification the most frequently present were: S. aureus, S. warneri, S. hominis and S. sciuri. These species stated for 46.4; 20.9; 7.2 and 5.2 percent of the total number of identified staphylococci species, respectively. Atypical coagulase-negative S. aureus represented 11.3 percent of identified strains of this species. With coagulase-negative staphylococci taken into account, presence of staphylococci was confirmed in 69.8 percent of the 275 samples tested, while contamination with coagulase-positive staphylococci was confirmed in 24.7 percent of them
Показать больше [+] Меньше [-]Water-Land-Food Nexus: Water Governance for Fish Production and Rice Farming Полный текст
2023
Sithirith, M. | Sok, S. | De Silva, S. | Kong, H. | Kongkroy, C. | Thavrin, T. | Sarun, H.
Cambodia has abundant water resources in general, but it has a little water in the dry season. The increased dry season rice farming in many provinces, following the increased rice export policy in Cambodia and the spill-over effects of rice trade in Vietnam has led to high demands for water for dry season rice farming. These have led to water shortage and conflicts over water among farmers in the farming provinces, and between sectors, for instance, fishery and rice farming. Irrigation system development and improvement have improved water management and support to agricultural development. Rice farming areas have been expanded to around 2 million ha and rice farming has been increased from one rice crop to three rice crops a year. These have increased the high demand of waters for rice farming
Показать больше [+] Меньше [-]Water-Land-Food Nexus: Water Governance for Fish Production and Rice Farming
2023
Sithirith, Mak | Sok, Sao | De Silva, Sanjiv | Kong, Heng | Kongkroy, Chay | Thavrin, Tim | Sarun, Hy
Cambodia has abundant water resources in general, but it has a little water in the dry season. The increased dry season rice farming in many provinces, following the increased rice export policy in Cambodia and the spill-over effects of rice trade in Vietnam has led to high demands for water for dry season rice farming. These have led to water shortage and conflicts over water among farmers in the farming provinces, and between sectors, for instance, fishery and rice farming. Irrigation system development and improvement have improved water management and support to agricultural development. Rice farming areas have been expanded to around 2 million ha and rice farming has been increased from one rice crop to three rice crops a year. These have increased the high demand of waters for rice farming
Показать больше [+] Меньше [-]Dracunculiasis: water-borne anthroponosis vs. food-borne zoonosis Полный текст
2020
Galán-Puchades, M.T.
Dracunculiasis is the first parasitic disease set for eradication. However, recent events related to the Dracunculus medinensis epidemiology in certain African countries are apparently posing new challenges to its eradication. Two novel facts have emerged: the existence of animal reservoirs (mainly dogs but also cats and baboons), and possibly a new food-borne route of transmission by the ingestion of paratenic (frogs) or transport (fish) hosts. Therefore, instead of being exclusively a water-borne anthroponosis, dracunculiasis would also be a food-borne zoonosis. The existence of a large number of infected dogs, mainly in Chad, and the low number of infected humans, have given rise to this potential food-borne transmission. This novel route would concern not only reservoirs, but also humans. However, only animals seem to be affected. Dracunculus medinensis is on the verge of eradication due to the control measures which, classically, have been exclusively aimed at the water-borne route. Therefore, food-borne transmission is probably of secondary importance, at least in humans. In Chad, reservoirs would become infected through the water-borne route, mainly in the dry season when rivers recede, and smaller accessible ponds, with a lower water level containing the infected copepods, appear, whilst humans drink filtered water and, thus, avoid infection. The total absence of control measures aimed at dogs (or at other potential reservoirs) up until the last years, added to the stimulating reward in cash given to those who find parasitized dogs, have presumably given rise to the current dracunculiasis scenario in Chad.
Показать больше [+] Меньше [-]Mycobacteria in water, feedstocks and food: analysis of publications Полный текст
2010
M. Kaevska | K. Hruska
Papers on mycobacteria in food, feed and water, published between 1945 and 2010 and indexed in the database Web of Science® (Thomson Reuters) were ranked according to authors, institutions, countries and source titles. The total number of papers on mycobacteria and food and mycobacteria and water were 1486 and 1419, respectively. More than 40% of papers have been published in the last five years. In addition to publications in peer reviewed journals the archives of ProMED-mail and the Rapid Alert System for Food and Feed of the European Union were also searched. It is evident that much attention is being paid to mycobacteria in food, feed and water as they likely pose a public health risk.
Показать больше [+] Меньше [-]Mycobacteria in water, feedstocks and food: analysis of publications Полный текст
2010
Kaevska, M.,Vyzkumny Ustav Veterinarniho Lekarstvi, Brno (Czech Republic) | Hruska, K.,Vyzkumny Ustav Veterinarniho Lekarstvi, Brno (Czech Republic)
Papers on mycobacteria in food, feed and water, published between 1945 and 2010 and indexed in the database Web of Science (Thomson Reuters), were ranked according to authors, institutions, countries and source titles. The total number of papers on mycobacteria and food, and mycobacteria and water were 1,486 and 1,419, respectively. More than 40% of papers have been published in the last five years. In addition to publications in peer reviewed journals the archives of ProMED-mail and the Rapid Alert System for Food and Feed of the European Union were also searched. It is evident that much attention is being paid to mycobacteria in food, feed and water as they likely pose a public health risk.
Показать больше [+] Меньше [-]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.
Показать больше [+] Меньше [-]Ecological Influences of Water-Level Fluctuation on Food Web Network Полный текст
2021
Que, Yanfu | Xie, Jiayi | Xu, Jun | Li, Weitao | Wang, Ezhou | Zhu, Bin
Seasonal water-level fluctuations may lead to changes in river nutrients, which causes corresponding changes in the trophic structure of an aquatic food web, and finally affects the whole ecosystem. In this study, we focused on the Ganjing River, a tributary of the Yangtze River, China. Common organisms were sampled and measured for carbon and nitrogen stable isotopes in the wet and dry seasons, respectively, and the relative contributions of different food sources were combined to construct the food web, so as to realize the influence of water-level fluctuation on aquatic food web. Our results showed that basal food sources for fish consumers were endogenous carbon sources such as POM, zooplankton and zoobenthos in the dry season, while high water level exposed fish to more diverse and abundant food sources, and the contribution proportions of exogenous carbon sources (e.g., terrestrial detritus) to consumers increased in the wet season. In parallel, the abundance and species diversity of fish were higher than those in the dry season. Most fish species had relatively higher trophic levels in the dry season compared to the wet season, because the increase in fish densities led to an increase in piscivores fish. The food web was composed of planktonic and benthic food chains in the dry season. During the wet season, the planktonic food chain was dominant, followed by the herbivorous food chain, and the benthic food chain was relatively less important. Therefore, water-level fluctuation may alter the trophic linkages within fish communities, which contributed to a more complex and interconnected food web. Moreover, as we expect, the stable isotope analysis food web was broadly in line with the gut content analysis food web.
Показать больше [+] Меньше [-]Water, energy, and food security in the Asia Pacific region Полный текст
2017
Taniguchi, Makoto | Masuhara, Naoki | Burnett, Kimberly
Security measures of three resources; water, energy and food are analyzed for thirty two countries in the Asia Pacific region which are faced to Pacific Ocean, in terms of amounts of the resource, self-production, and diversity of sources of each resource. Diversity for all the three resources is also analyzed using surface water and groundwater for water sources; hydro power, geothermal power, solar, and biomass for energy; and cereals, vegetable, fruit, meat, and fish for food. We see high diversity of sources of water in the US and the Philippines, and a low diversity of sources of food in the US, Canada, and Indonesia. These security measures including water security show new hydrological insight for Asia-Pacific region.
Показать больше [+] Меньше [-]Maximising nutritional benefits within the energy, water and food nexus Полный текст
2020
Al-Thani, Nayla Ahmad | Govindan, Rajesh | Al-Ansari, Tareq
Many countries are exposed to malnutrition within their population, either in the form of undernutrition or obesity leading to dire affects for human health. As a consequence, a ‘Decade of Action’ was certified by the UN in 2016 to promote the need to end all types of malnutrition. Within food security objectives, this study evaluates the possibility to maximise the nutritional value of agricultural output through the optimal allocation of water and energy resources. Using a hypothetical case study in Qatar, two complementary multi-objective mathematical models are developed to solve various scenarios. Firstly, the goal programming minimises the expected value of negative deviation from the desired target in food groups and nutrients. Secondly, the linear programming model increases the expected value of self-sufficiency percentage in food groups and nutrients. The results indicate the specific dependency of increasing the self-sufficiency of different nutrients on the increased production of dates group and fish group, implying that dates and fish can be considered strategic crops in terms of their contribution towards food security, owing to the fact that they require the least quantity of water and energy resources for production. As poultry and meat groups require the largest quantities of water and energy resources, optimal results do not favour their production. The optimal production mix that increases the satisfaction of nutrients at 40% of the food groups self-sufficiency satisfaction with the same amount of energy and water are as follows: 52378, 47085, 111303 tonnes of dates, milk and dairy products and fish groups respectively. This production mix will achieve 29.18%, 100%, 90.8%, and 2.5% satisfaction percentage of carbohydrates, protein, fats, and fibres respectively.
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