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Background. Natural mineral waters may be an essential source of calcium, magnesium and other minerals. In bottled waters, minerals occur in an ionized form which is very well digestible. However, the concentration of minerals in underground waters (which constitute the material for the production of bottled waters) varies. In view of the above, the type of water consumed is essential. Objective. The aim of the study was to estimate the calcium and magnesium contents in products available on the market and to evaluate calcium and magnesium consumption with natural mineral water by different consumer groups with an assumed volume of the consumed product. Material and methods. These represented forty different brands of natural mineral available waters on Polish market. These waters were produced in Poland or other European countries. Among the studied products, about 30% of the waters were imported from Lithuania, Latvia, Czech Republic, France, Italy and Germany. The content of calcium and magnesium in mineral waters was determined using flame atomic absorption spectrometry in an acetylene-air flame. Further determinations were carried out using atomic absorption spectrometer - ICE 3000 SERIES-THERMO-England, equipped with a GLITE data station, background correction (a deuterium lamp) as well as other cathode lamps. Results. Over half of the analysed natural mineral waters were medium-mineralized. The natural mineral waters available on the market can be characterized by a varied content of calcium and magnesium and a high degree of product mineralization does not guarantee significant amounts of these components. Among the natural mineral waters available on the market, only a few feature the optimum calcium-magnesium proportion (2:1). Considering the mineralization degree of the studied products, it can be stated that the largest percentage of products with significant calcium and magnesium contents can be found in the high-mineralized water group. Conclusions. For some natural mineral waters, the consumption of 1 litre daily may ensure the recommended intake levels of calcium and magnesium in some consumer groups to a considerable degree. For 1-3 -year-old children it is recommended to consume less than 1 litre daily of natural mineral waters containing an excess of 700 mg of calcium and 80 mg of magnesium in 1 litre.
Background. Dietary and lifestyle risk factors play an important role in the pathogenesis of cardiovascular disease (CVD). The excessive intake of products that could affect atherogenic effect and are rich sources of saturated fatty acids (SFA) and cholesterol conductive the occurrence of lipid metabolism disturbances in the body. Objective. Evaluation of fatty acids dietary intake and assessment of the students’ diets atherogenicity in the aspect of the CVD risk. Material and methods. The study was conducted in 2011-2012. The study group included 100 females, dietetic students of the Wroclaw Medical University. The average age of the students was 21 years. Dietary habits were evaluated by the 3-day diet record method including one weekend day. Results. Average energy intake was 1673.9 kcal per day. The average daily total fat intake was 65.4 g and provided 34.5% of total energy intake. The percentage of energy from SFA in the diets of 82% students exceeded the recommended 10% and averaged 13.1%. The average percentage of energy from monounsaturated fatty acids (MUFA) in the students diets was 12.9% and in the diets of 5% students did not exceeded recommended 10%. The average percentage of energy from polyunsaturated fatty acids (PUFA) was 5.7% and in the diets of 66% students did not fulfilled the recommended 6-10%. About 80% of the students consumed less than recommended 2 g of C18:3 per day. Insufficient intake of EPA and DHA was observed in 71% students’ diets. The average n-6/n-3 PUFA ratio was 7.2 and in the 76% of female diets exceeded the recommended value of 4:1. The diets of 80% of students were considered as atherogenic, because of elevated value of Keys score. The ratio between PUFA and SFA in the female diets was incorrect and amounted to 0.52 (recommended value >1.0). Conclusions. Incorrect energy intake from daily diet and improper dietary intake of selected fatty acids in the diets of students may contribute to the development of CVD.
This paper attempts to find out if the education of female students of a secondary school of catering has had any effect on the improvement of their diets. The research shows that the diets of first-grade students provides the recommended dietary allowance for energy and nutrients to a greater, yet still insufficient extent than the diets of higher grade students. The results of the statistical analysis showed, that among 23, only in a few causes of nutrients, differences between percentage of recommended intake were significant. The consumption of energy, water-soluble vitamins and minerals, mainly calcium, copper and magnesium has been insufficient to satisfy the recommended dietary allowances. The intake of fat-soluble vitamins (A and E) has been sufficient or even higher than the recommended dietary allowance while that of sodium several times exceeded the low normal range in the case of all female students under study.
The objective of the study was to evaluate the frequency of eating of dairy products and the daily intake of these products in the population of 449 persons aged 13-15, representing rural and urban areas. The frequency of eating and the average daily intake of milk and its products were insufficient. The girls and the participants from the rural area consumed dairy products more seldom and in lower amounts in comparison with the boys and the participants from the urban area, respectively.
Our paper presents results from surveillance of pesticide residues in fruits and vegetables carried out in 2004-05. 747 samples of 39 different types of fresh fruit and vegetables were analyzed for their pesticide residue contents. The highest resides found were: bupirimate residues (2.19 mg/kg), captan residues (1.82 mg/kg), ethylenebisdithiocarbamate residues (1.6 mg/kg), tolylfluanid residues (1.44 mg/kg), procymidone residues (1.19 mg/kg) and chlorpyrifos residues (1.01 mg/kg). In 27 samples (3.6%) residues exceeded national MRLs. Comparisons of the highest residues to ADI levels indicate that fresh fruit and vegetables from southeastern Poland seem to be quite safe for toddlers and adults.
Background. Organochlorine pesticides (OCPs), which act in a similar way to natural hormones, lead to disorders of the endocrine system in animals and humans (endocrine disruptors). Among food products, fish are considered to be the main source of these compounds in the human diet, posing a health risk to consumers. The aim of this study was to determine concentrations in fish and their environment of certain organochlorine pesticides in fish and their environment and to estimate daily intakes (EDI) of individual pesticides from the fish examined. Materials and Methods. Analyses aimed at detecting the pesticides (OCPs: α-, β-, γ-HCH, heptachlor, heptachlor epoxide, aldrin, dieldrin, and endrin) included samples of water taken from the lower stretch of the Oder River and three fish species, which are commonly harvested in that area. Quantitative analyses were carried out using the Capillary Gas Chromatography/Mass Spectrometry method in a GC MSD HP 6890/5973 apparatus. Results. The study found that concentrations of OCPs in fish gonads were significantly higher than in the muscle tissue. The dominant pesticide compound in gonads of roach and bream was γ-HCH, whilst β-HCH predominated in the muscle tissues of those fishes. Endrin, on the other hand was the major pesticide in the muscle tissue of ide. Mean concentrations of OCPs in the gonads ranged from 0.385 to 0.544 ng∙g–1 wet weight (w.w.) for α-HCH, 0.745 to 0.832 ng∙g–1 w.w. for γ-HCH, 0.479 to 0.576 ng∙g–1 w.w. for dieldrin, and 0.381 to 0.684 ng∙g–1 w.w. for endrin. Concentrations of the studied compounds in the water taken from the Oder River followed the order: endrin > γ-HCH > α-HCH > dieldrin > β-HCH > heptachlor ≈ aldrin > heptachlor epoxide. The highest log BCF was obtained for fish gonads and ranged from 1.5 (endrin) to 3.4 (heptachlor epoxide). Estimated daily intakes (EDI) varied from 0.0014% to 0.097% of the acceptable daily intake (ADI). Conclusion. This study revealed no direct risk linked to the consumption of fish captured from the study area. However, from the ecological aspect, the accumulation of organochlorine residues in fish gonads has been considered a dangerous phenomenon, as this may result in decreased reproduction of fish and other aquatic organisms, potentially leading to their extinction.
The wide use of bisphenol A (BPA) as a monomer in plastics manufacture or epoxy resins intended for food contact materials (FCM) has triggered numerous concerns due to toxicological findings indicating possible endocrine disrupting properties. This article traces the evolution of the scientific opinions since 1986 when the Tolerable Daily Intake (TDI) for BPA and its specific migration limit (SML) from plastic FCM into food were proposed for the first time by the Scientific Committee for Food (SCF). Resent extensive scientific studies concerning refined data on toxicity and exposure to BPA from food and non-food sources (eg. dust, cosmetics, thermal paper), including the most vulnerable groups of population, allowed the European Food Safety Authority (EFSA) to reduce the TDI of BPA from previously 50 μg/kg bw/day to now 4 μg/kg bw/day. EFSA’s latest scientific opinion published in 2015 concludes that basing on the current estimations of total exposure to BPA from dietary and non-dietary sources for infants, children and adolescents is below the temporary TDI of 4 μg/kg bw/day. EFSA has also underlined that BPA poses no health risk at the estimated exposure levels of any population age group, including unborn children and the elderly. However, EFSA has indicated that some data on exposure and toxicological effects still require clarifications.
An attempt has been made to review pollution of the Baltic fish and fishery products by hexachlorobenzene (HCBz) and to estimate daily intake of HCBz and pentachlorobenzene (PCBz) with marine and freshwater fishes and fishery products in Poland. The calculated arithmetic mean weighed concentrations of HCBz in muscle tissue of the Baltic fish are 22 ng/g wet weight in herring in 1973-1985 (n = 3115) and 4.3 ng/g in 1986-1992 (n = 371); 14 ng/g in sprat in 1971-1985 (n = 939); 6.4 ng/g in salmon in 1976-1982 (n = 151); 14 ngig in eel in 1981-1982 (n = 480); 200 ng/g m cod-liver in 1973-1978 (n = 72) and 85 ng/g in 1979-1990 (n = 918); 0.65 ng/g in cod in 1981-1992 (n = 527); 2.2 ng/g in flatfishes in 1974-1992 (n = 396); 0.96 ng/g in perches in 1983-1992 (n = 70) and 2.8 ng/g in other fish species in 1981-1992 (n = 192). The intake of HCBz has been assessed for 60 to 92 ng/person/day in the years 1973-1985 and from 45 to 56 ng/person/day (mean 52 ng) in 1989-1996, while of PCBz for 7.8 to 11 ng/person/day (mean 9.4 ng) in 1989-1996.
The paper presents some aspects of relations between modern plant protection of apple orchards and ecotoxicology. Based on significant similarity of the shape and size of apple and tomato fruits the relation between the doses of active ingredients of plant protection products and their residue levels immediately after treatment was derived for the apples and then quality indices and the risks for human health were estimated. It was found that many of the currently in force MRLs need to be revised and the exposure of consumer should not exceed the acceptable daily intakes (ADIs) and acute reference doses (ARfDs) for pesticide residues.
Background. Natural mineral waters are purchased and consumed according to consumer preferences and possible recommendations. The choice of appropriate water should take into account not only the general level of mineralization but also the content of individual components, including electrolytes such as sodium and potassium. Sodium is necessary to ensure the proper physiological functions of the body. It is defined as a health risk factor only when its excessive intake occurs. Potassium acts antagonistically towards sodium and calcium ions, contributes to a reduction of the volume of extracellular fluids and at the same time reduces muscle tension and permeability of cell membranes. The demand for sodium and potassium is of particular importance in people expending significant physical effort, where an increased electrolyte supply is recommended. Objective. The aim of the study was to estimate the content of sodium and potassium in natural mineral waters available in the Polish market and to evaluate the intake of those components with the commercially available mineral waters by different groups of consumers at the assumed volume of their consumption. Material and Methods. The research material consisted of natural mineral waters of forty various brands available on the Polish market. The examined products were either produced in Poland or originated in other European countries. Among the products under examination, about 30% of the waters were imported from Lithuania, Latvia, the Czech Republic, France, Italy and Germany. A sample for analyses consisted of two package units of the examined water from different production lots. Samples for research were collected at random. The study was conducted with the same samples in in which calcium and magnesium content was determined, which was the subject of the first part of the study [6]. The content of sodium and potassium was determined using the emission technique (acetylene-air flame), with the use of atomic absorption spectrometer – ICE 3000 SERIES – THERMO – England, equipped with a GLITE data station, with wavelengths of 589.0 nm and 766.5 nm, respectively. Results. The obtained research results indicate a high differentiation of the content of both sodium and potassium in natural mineral waters available on the Polish market, particularly in medium- and highly-mineralized waters. The consumption of 1 liter of low-mineralized natural mineral water ensures recommendations concerning the amount of sodium intake only in a limited scope, while in case of products of medium and high level of mineralization, it is much diversified. On the other hand, potassium supply with one liter of natural mineral water may ensure no more than several percent of the recommended daily intake of this component. Conclusions. The high diversification of sodium content in natural mineral waters available on the Polish market should encourage the analysis of their composition to avoid health disorders in a given group of consumers. The natural mineral waters examined in the study, at the assumed volume of their daily consumption, are not a good source of potassium for the population groups under analysis.
The experiment was carried out on 40 Polish Black-and-White HF bull calves (52-87% of HF blood) aged from 9 and 12 days at the beginning of the experiment to 90 days at its end. From the beginning of the trial the calves were offered restricted liquid feed to 56 days of age and concentrates ad libitum according to IZ-PIB-INRA recommendations. The concentrates were without sodium butyrate (control group, C), or with 1% Na-butyrate (group B1), 3% Na-butyrate (group B3) and 0.3% Na-butyrate (group B0.3), and included meadow hay from 0.10 kg/day during the liquid feeding period to 0.20 kg/day after weaning at 57 days of age. Na-butyrate at 3% in the diet reduced feed intake and had a beneficial effect on calf growth and nutrient utilization. The dietary level of Na-butyrate did not cause significant changes in serum β-hydroxybutyric acid concentration of the calves.
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