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Pesticide residues in food and drinking water from the consumerʼs perspective: The relevance of maximum residue levels and product-specific differences Полный текст
2022
Nitzko, Sina | Bahrs, Enno | Spiller, Achim
One disadvantage of pesticide use in agriculture are the residues that remain in food and drinking water. In addition to analyzing consumer intolerance to pesticide residues for various food groups (fruit/vegetables, cereals/cereal products, and potatoes) according to the degree of product processing, the present study investigates consumer knowledge and attitudes regarding the EU's regulations on maximum residue levels (comparatively) for both food and drinking water. A survey of 1,195 German consumers was conducted by means of an online questionnaire. Different statistical analysis methods were used for the data analysis. The results show that EU regulations on maximum residue levels were known to 62.7% of respondents regarding food, and to 60.9% of the respondents regarding drinking water. Both pesticide residues in general and those exceeding the maximum residue levels were considered rather problematic. There was an ambivalent attitude towards the maximum residue levels. The attitudinal differences between food and drinking water were small to marginal. The analyses of pesticide residue intolerance with respect to degree of food processing showed that the highest intolerance was found with unprocessed/minimally processed products, followed by food products with higher processing degrees. Overall, these findings underline the consumer-sided general importance of the residue issue and argue for more sustainable agricultural systems characterized by pesticide use reduction or avoidance.
Показать больше [+] Меньше [-]Towards circular economy in the agrifood sector: Water footprint assessment of food loss in the Italian fruit and vegetable supply chains Полный текст
2022
Agnusdei, Giulio Paolo | Coluccia, Benedetta | Pacifico, Andrea Mattia | Miglietta, Pier Paolo
In recent years, the agrifood sector has been relevantly impacted by resource shortage, food loss and waste across the whole supply chain. This study assesses, from a life cycle perspective, the water footprint of the fruit and vegetable losses occurring within the Italian agrifood supply chain, analyzing the potential linkages between circular economy policies and water management. The study methodology consists of three consequential steps: the definition of system boundaries, the data collection from databases and reports, and the processing of said data. Based on data availability of food losses, the following food items were chosen for the analysis, representing about 60% of the Italian fruits and vegetables domestic supply: tomatoes and onions for the macro-group of vegetables; orange, lemons, apples and grapes for the macro-group of fruits. Assessing the water footprint for the six categories of products, this study found out that, although less than other products, the amount of grapes lost along the supply chain determines a very high percentage of water loss. The tomato supply chain has proved to be the most sustainable in terms of water loss, due to the low amount of water needed to cultivate tomatoes. The analysis of the Italian trade market of fruits and vegetables has shown that water losses are mainly due to imports from France and Spain, in line with the high trade volumes. Finally, a weakness of the Italian fruit and vegetable supply chain was observed in the transport phase, because in this phase large quantities of food loss are associated with large volumes of water loss. Far from being the only tool to be used in the decision-making processes, the assessment of water loss embodied in the food loss, can be useful for managing the supply chain processes of perishable foods, ensuring process yield improvements, food quality traceability and environmental impact mitigation.
Показать больше [+] Меньше [-]Secular trends and customer characteristics of sweetened beverage and water purchasing at US convenience and other small food stores, 2014–2017 Полный текст
2022
Megan R. Winkler | Kathleen Lenk | Darin Erickson | Melissa N. Laska
Abstract Background Cardiovascular health is linked to sugar- and artificially-sweetened beverages (SSBs and ASBs). Prior studies document declines in SSB purchases. However, it is unclear if similar trends exist at convenience and other small food outlets, which often serve lower-income communities and where objective point-of-sales data are difficult to obtain. We examined trends (2014–2017) in observed SSB, ASB, and water purchases at convenience and other small stores as well as differences in purchasing by customer characteristics. Methods We used observational purchase data collected annually (2014–2017) from 3010 adult customers at 147 randomly-sampled stores in Minneapolis/St. Paul, USA. SSB sub-types included any ready-to-drink sweetened soda, fruit, sport, energy, tea, or other drink, and ASBs included artificially-sweetened versions. Unsweetened water included ready-to-drink water. Mixed regression models examined trends over time and associations with customer characteristics, accounting for customers nested within stores and stores repeatedly measured over time. Results Nearly 50% of purchases included an SSB. Approximately 10% included an ASB. There was no evidence of change over time in SSB or ASB purchasing. Customer purchasing of unsweetened water significantly increased over time (5.7 to 8.4%; P for trend = 0.05). SSB purchasing was highest among men, young adults, customers with lower education/ income, and customers that shopped frequently. ASB purchasing was highest among women, those 40–59 years, non-Hispanic White, Hispanic, and customers with higher education/ income. Conclusions Despite research suggesting previous declines in SSB consumption and purchasing in the US, we identified a persistent, high trend of SSB purchasing overtime at convenience and other small food stores. Consumption of SSBs and water are growing targets for public policy and health campaigns. Results demonstrate additional work is needed curb sweetened beverage purchasing and promote water purchasing at convenience and other small food stores, which are often prevalent in low-income and marginalized communities.
Показать больше [+] Меньше [-]Quantitation of Water Addition in Octopus Using Time Domain Reflectometry (TDR): Development of a Rapid and Non-Destructive Food Analysis Method Полный текст
2022
Teixeira, Bárbara | Vieira, Helena | Martins, Sandra | Mendes, Rogério
A rapid and non-destructive method based in time domain reflectometry analysis (TDR), which detects and quantifies the water content in the muscle, was developed for the control of abusive water addition to octopus. Common octopus samples were immersed in freshwater for different periods (0.5–32 h) to give a wide range of moisture contents, representing different commercial conditions. Control and water-added octopus were analyzed with a TDR sensor, and data correlated with moisture content were used for calibration and method validation. A maximum limit of moisture content of 85.2 g/100 g in octopus is proposed for conformity assessment, unless the label indicates that water (>5%) was added. Calibration results showed that TDR analysis can discriminate control and water-added octopus, especially for octopus immersed for longer periods (32 h). In addition, moisture content can be quantified in octopus using only TDR analysis (between 80 and 90 g/100 g; RMSE = 1.1%). TDR data and correlation with moisture content show that this non-destructive methodology can be used by the industry and quality control inspections for assessment of octopus quality and to verify compliance with legislation, promoting fair trade practices, and further contributing to a sustainable use of resources.
Показать больше [+] Меньше [-]Application of Integrated Hydro-economic Optimization Model for Water Resources Management of Qarehsou River Basin to Wetland Protection and Food Security Полный текст
2022
Mazraeh, F. | Amirnejad, H. | Nikouei, A.
IntroductionIn recent years, climate change and global warming, by reducing rainfall and higher temperature, have increased the frequency and severity of drought and water scarcity in various parts of the world, including Iran. The study of the annual discharge of rivers located in Qarahsu basin (Golestan province) showed that this basin has also faced drought in recent years and since most of the water required of Miankaleh wetland is supplied from Qarahsu River, so Water abstraction for agricultural, urban and industrial uses will have a major impact on the ecosystem of Miankaleh wetland. Given that agriculture is the main economic activity in the Golestan province and also it is the largest consumer of water and food security providers in the region Therefore, reducing irrigation water consumption can provide the extra water needed to protect the wetland. In order to sustainable supply water required of Miankaleh wetland in Gorgan Gulf, and preventing to dry the wetland, and using area's capacity in food security, attending to water resources management is very important in Qarehsou river Basin and Gorgan Gulf (Miankaleh wetland).Materials and MethodsIn this paper, a hydro-economic river basin model was used to water optimal allocation of Qarehsou River among water users in the basin (including irrigation activities, urban, industrial, and fishery uses, and environment) and protecting the Miankaleh wetland ecosystem (Gorgan Gulf). The empirical river basin model includes three reduce forms of hydrological components, regional optimization components, and environmental components and can make the integrated linkage between hydrologic, economic, institutional, and environmental components. This model also simulates demand nodes' behavior under different drought scenarios. The linkage between the three model components allows a rigorous evaluation of the quantitative impacts of drought on water availability in the river basin under study, the effects on the users’ behaviors, and the private and social-economic benefits and costs of water use. The hydrological model of the river basin is based on the principles of water mass balance, which determine the volume of water availability in the different river reaches. This water available can be used for economic activities after taking into account the environmental restrictions for economic activities. In the economic component, the economic benefits of water demand are maximized by using water demand functions subject to technical and resource constraints. In the environmental component, we maximize the benefits that environmental characteristics provide for society and compare them with the benefits of other applications.Results and DiscussionThe results showed, in the current condition, the allocation and consumption of water have not been optimal between nodes in the Qarehsou river basin. In the normal water supply scenario, also total water sources decreased to protect Miankaleh wetland in suitable condition, but the area under cultivation of the most crops increases, which increases water resources consumption in this sector, and finally, the net benefits of the agriculture sector has grown positively. Also, by allocating 18 million cubic meters of water to the wetland, because of optimal water allocation, urban water consumption, and annual gross benefit increase, too. In drought conditions, because of water shortage due to climate change and reduction headwater and surface flows to preserve the wetland, water consumption reduced by all nodes, especially irrigation node. Agricultures can prevent from reducing excessive of their income by changing in cultivation pattern, deficit planting crops with less water, etc. Under drought conditions and water scarcity, although the amount of water available is reduced to all applicant nodes compared to baseline conditions, but it improves the economic benefits of stakeholders, especially the environment sector.Increasing groundwater extraction and decreasing surface water (due to drought and wetland water supply from headwater flow), although Qarehsou river basin has faced water scarcity problem, due to the optimal distribution of water between water demand nodes based on the economic-hydrological model used by changing the cultivation pattern and the use of drought-tolerant crops, the amount of water entering the Miankaleh wetland has increased in normal and drought scenarios and as a result has increased the gross environmental benefits of Qarehsou basin. Therefore, it is recommended to protect the Miankaleh wetland and increase its ecological function, reduce the water allocated value to irrigation sector, and to increase the farmers economy efficiency, optimal cultivation pattern, and applying deficit irrigation strategies promote by agricultural jihad experts in province, and in drought conditions is used suitable strategies for drought to improve water resources management.
Показать больше [+] Меньше [-]Onion Essential Oil-in-Water Emulsion as a Food Flavoring Agent: Effect of Environmental Stress on Physical Properties and Antibacterial Activity Полный текст
2022
Elham Taghavi | Afifah Syazwani Abdul Salam | Navideh Anarjan | Elexson Nillian | Mohd Nizam Lani
Plant essential oils (EOs), which are acknowledged as generally recognized as safe (GRAS) by the Food and Drug Administration (FDA), have the potential to be used as a flavoring agent. However, there are limitations to some EOs, such as low water solubility and high volatility, which limit their application in food technology. This study was conducted to develop onion (Allium cepa) EO as a flavoring agent and determine its stability against environmental stress via an emulsification technique, with different concentrations of sodium caseinate, as a delivery system. Emulsions containing onion EO were prepared using different concentrations of sodium caseinate (3, 5, and 7% w/w) via the solvent-displacement technique. The physical properties (average droplet size, color, turbidity, and stability measurement) and antibacterial activity (agar disk diffusion method) of emulsions were then determined. Results show that emulsion with 7% (w/w) sodium caseinate was the most desirable sample in terms of physical properties and antibacterial activity. Hence, it was selected for environmental stress studies (i.e., thermal processing, freeze-thaw cycles, and ultraviolet (UV) exposure). Results revealed that all types of environmental stresses had significant (p<0.05) effects on droplet size, color, turbidity, and stability. Generally, the environmental stresses increased the droplet size except in the freeze-thaw cycle case, while all stresses decreased the stability and lightness. All types of environmental stress treatment did not show a significant (p<0.05) effect on antibacterial activity enhancement against Salmonella Typhimurium and Listeria monocytogenes except in the case of UV treatment against L. monocytogenes. Therefore, the present work has demonstrated the potential use of emulsion as an encapsulation and delivery system of EO flavors for food applications.
Показать больше [+] Меньше [-]Co-implementation of precision nutrient management in long-term conservation agriculture-based systems: A step towards sustainable energy-water-food nexus Полный текст
2022
Parihar, Chiter Mal | Meena, Bolta Ram | Nayak, Harisankar | Patra, Kiranmoy | Sena, Dipaka Ranjan | Singh, Raj | Jat, Shankar Lal | Sharma, Dinesh Kumar | Mahala, Deep Mohan | Patra, Sridhar | Rupesh | Rathi, Neelmani | Choudhary, Madhu | Jat, Mangi Lal | Abdallah, Ahmed M.
The conventionally managed cereal-based cropping systems in the Indo-Gangetic Plains (IGP) of South Asia are energy intensive that overwhelm the farm profits and the environmental footprint. This research addresses a complex nexus between yield-energy-water-GHG footprints-economics of conservation agriculture (CA)-based intensified maize-wheat-mungbean rotation. This study evaluated the effect of long-term CA (2012–2020) with optimum nutrient management (2017–20) on energy budgeting, productivity, water and C-footprints, Water productivity (WP), and economics of the CA-based maize-wheat-mungbean system. CA-based permanent bed- and zero tillage flatbed with preceding crop residue retention were compared with the conventional till with preceding crop residue incorporation. These treatments were factored over three-nutrient management alternatives, i.e., GreenSeeker®-guided-N, site-specific nutrient management (SSNM), and recommended fertilizers' dose (Ad-hoc), were compared with farmers' fertilizers practices (FFP). Permanent bed and zero tillage treatments registered higher systems' productivity (18.2 and 12.0%), net returns (44.7 and 34.7%) and water productivity (35.6% and 22.1%), and C-sequestration (54.8 and 62.3%), respectively, over conventional till. Permanent bed- and zero tillage treatments increased the systems' net energy (NE), energy use efficiency (EUE), energy productivity (EP), and energy intensity (EI) by 22.6 and 14.0; 10.1 and 5.6; 9.7 and 5.4; 28.3 and 24.0%, respectively, over conventional till. Conventional till recorded higher net CO2-eq emission (26.5 and 27.2%), C-footprint (20.8 and 14.5%), and water footprint (27.3 and 18.0%) than permanent bed- and zero tillage treatments. SSNM increased the system's productivity, water productivity, and energy use efficiency, while reducing the system's water- and C-footprints and net CO2-eq emission. Thus, adopting permanent beds as a crop establishment method with SSNM could be a feasible alternative to attain higher productivity, profitability, and resource use efficiency in the maize-wheat-mungbean system in northwest India.
Показать больше [+] Меньше [-]Analysis of climate change impact on resource intensity and carbon emissions in protected farming systems using Water-Energy-Food-Carbon Nexus Полный текст
2022
Yoon, Pu Reun | Lee, Paul S. (Paul Sang Hyun) | Chʻoe, Chin-yong | Yoo, Seung-Hwan | Hur, Seung-Oh
As the uncertainty and importance of securing resources increase, the nexus concept is used for integrated sustainable use management planning. In particular, because protected farms are most affected by temperature change, the connection between the heating temperature variable and resources must be analyzed. In this study, a water-energy-food-carbon nexus model that reflected the agricultural characteristics of protected farms was constructed. The crop yield, irrigation amount, and heating energy were simulated, and a sensitivity analysis was performed according to climate change scenarios and heating temperature variables. There was no significant decrease in the yield of food resources even at heating temperatures lower than 12 °C. In contrast, the growing period shortened as the heating temperature increased above 12 °C, which decreased the irrigation amount but tended to increase the heating energy. In addition, lowering the heating temperature standard from 12 °C to 8 °C (or less) is suitable for efficient resource management.
Показать больше [+] Меньше [-]Extracto comercial de Echinacea purpurea, en el alimento y agua de bebida, con indicadores productivos de pollos de carne Полный текст
2022
Soriano Montaño, Sandra Noelia | Del Carpio Ramos, Pedro Antonio
La Echinacea purpurea es una hierba ampliamente investigada y utilizada en la salud de las personas pero relativamente poco evaluada en aspectos relacionados en la producción animal; se implementó este ensayo con tres tratamientos, para evaluar un extracto comercial de esta hierba de acción fitobiótica: Testigo o control, E. purpurea en el agua de bebida (50 g/ 200 lt de agua) y E. purpurea en el alimento (50 g/ 100 kg de alimento); en forma permanente en un ensayo de alimentación de 40 días de duración con 100 pollos Cobb 500. Cuando la Echinacea se suministró en el alimento el consumo acumulado fue 4.2% superior al testigo, cuando se suministró en el agua fue similar al testigo. Los incrementos de peso acumulados fueron superiores al testigo en 2 y 7.4% cuando se suministró en el agua y en el alimento, respectivamente, los incrementos consistentes se dieron en el Acabado y se mostró acostumbramiento progresivo. La eficiencia de utilización del alimento para incrementar peso vivo fue superior en 12.6% cuando se suministró en el alimento, en el agua fue similar al testigo. El peso del riñón fue superior (P<0.01) en el testigo; en tanto que el peso de bursa de Fabricio lo fue cuando la Equinacea se suministró en el alimento (P<0.01), indicando el efecto promotor del sistema inmunológico. La utilización de la Echinacea no afectó el grado de aceptación de la carne. Se recomienda el empleo de Echinacea purpurea en la alimentación de pollos de carne y evaluarla bajo condiciones de ausencia de coccidiosato y APC.
Показать больше [+] Меньше [-]Pseudomonas aeruginosa como indicador en el agua tratada por cloración utilizada en procesos de la industria elaboradora de alimentos Полный текст
2022
Arzú, Oscar Ricardo | Polej, Egon Edvin | Ayala, María Teresa | Zambiasio, Violeta Amancay
El agua empleada en la industria elaboradora de alimentos, ya sea como materia prima o utilizada en las tareas de limpieza, adquiere una relevancia preponderante al ser un posible vehículo transmisor de agentes patógenos, por ello es indispensable la utilización de agua potable. El proceso de desinfección o potabilización no siempre es eficiente, dado que hay microorganismos capaces de adaptarse y resistir al proceso. En este sentido, Pseudomonas aeruginosa es un microorganismo que posee esa cualidad para adaptarse a diferentes entornos ambientales, además de agruparse y desarrollar biopelículas que le ofrece una resistencia mayor, aún a los agentes desinfectantes empleados para la potabilización del agua. El área geográfica de muestreo comprenderá a las industrias elaboradoras de alimentos de las provincias de Chaco y Corrientes. Las muestras serán procesadas de acuerdo a lo descripto por Standard Methods For The Examination of Wather & Wastewater.23st. (2017) El estudio de laboratorio se realiza por la Técnica de Tubos Múltiples y Filtración por Membrana para P. aeruginosa. La relevancia de su detección y presencia en el agua pone de manifiesto la necesidad evidente de corregir el desvío asegurando la inocuidad del producto. Además, la información obtenida resultará de importancia para la evaluación de riesgos e impactos que ello pueda tener en la salud pública. Prueba supuesta: serie de cinco tubos, con 10 ml de caldo asparagina de concentración simple para inóculos de 1 ml. Se incuban los tubos sembrados a una temperatura de 35 a 37 °C. A las 48 horas de incubación se examinan los tubos expuestos a luz ultravioleta de onda larga (luz negra) en habitación oscura. La producción de pigmento fluorescente verde constituye una prueba presuntiva positiva. Prueba confirmatoria: de los tubos positivos se inoculan con 0,1 ml de cultivo en la superficie de Cetrimida Agar Base. Asimismo, se realiza la técnica de filtración por membrana para P. aeruginosa, establecido en las normas de Standard Methods for the Examination of Wather & Wastewater.23st. (2017). Para asegurar la calidad del producto alimenticio elaborado, resulta indispensable el monitoreo del agua empleada como materia prima, que debe ajustarse a los estándares microbiológicos exigidos por la reglamentación Argentina. Si bien el número de muestras analizadas no son aún representativas, el hallazgo demostró su presencia.
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