Search Results
Results 351 - 400 of 734
< 3 4 5 6 7 8 9 10 11 12 13 >
Ismail R - - 2002
Environmental monitoring was carried out at Upper Layang Reservoir situated in Masai, Johor, Malaysia. The study shows that thermal stratification and natural mixing of the water column do exist in the reservoir and the level of stratification varies at different times of the year. Artificial destratification via diffused air aeration ...
Culhane-Pera Kathleen A - - 2002
OBJECTIVE: Iron-deficiency anemia is high in refugee Hmong toddlers attending Special Supplemental Food Program for Women, Infants, and Children (WIC) sites in St. Paul, Minnesota. We investigated social and cultural reasons for feeding practices of Hmong parents that result in excessive milk and inadequate food intake among infants and toddlers ...
Bosscher D - - 2002
During the weaning period, solid foods are introduced in the diet to complement human milk or infant formula. Consequently, marginal deficiencies may easily develop because of inappropriate feeding and low bioavailability of nutrients. The objective of this study was to determine calcium, iron and zinc availability from weaning foods that ...
Matuschek E - - 2001
After reduction of phytate with phytase, water slurries of two high-tannin cereal flours were incubated with polyphenol oxidase (mushroom tyrosinase), and the effects on different phenolic groups and on in vitro accessible iron were studied. Enzyme incubation was also performed after cooking, soaking, and germination of the cereals. Phytase incubation ...
Kannan S - - 2001
Beans are the core of the Latin American diet and contain iron and zinc. However, the bioavailability of these trace minerals from beans is low. The objective of this study was to determine if the bioavailability of iron and zinc could be improved with the use of fermentation and germination ...
Malope B I - - 2001
Laboratory tests used in the diagnosis of iron status lack specificity in defining iron deficiency anaemia (IDA) and anaemia of inflammation (AI). The serum transferrin receptor (sTfR) may provide more information in this regard. The iron status of 561 pre-school children was determined and classified using the conventional measurements. The ...
Massey L K - - 2001
Consumption of soybeans and food products made from them is increasing because of their desirable nutritional value. However, the oxalate content of seeds from 11 cultivars of soybean showed relatively high levels of total oxalate from 0.67 to 3.5 g/100 g of dry weight. Oxalate primarily was found as calcium ...
Skibniewska K A - - 2001
Magnesium, calcium and phosphorus have been determined in whole-day food rations collected during three consecutive days in winters of 1993/4, 1995 and 1996 in hospital canteens in Krakow, Lodz, Olsztyn and Poznan, Poland. Portions of food for one person were collected. In 1998 whole-day food rations of seven students (five ...
Boontaveeyuwat N - - 2001
This study aimed to investigate the total iron and heme iron in animal foods, and calculate the heme iron content in urban and rural Thai diets. The samples included land animals and their products (meat, visceral tissue, blood curd and others), fish as well as other aquatic and marine animals. ...
Whittaker P - - 2001
BACKGROUND: Fortification of cereal-grain products was introduced in 1941 when iron and three vitamins were added to flour and bread. Ready-to-eat cereals were fortified at about the same time. These fortifications have contributed to increased dietary iron intake and reductions in iron deficiency anemia in the US. In 1996, FDA ...
Gibson R S - - 2001
Both cereal staples and household diets can be manipulated to enhance the content of micronutrients and/or alter the levels of absorption modifiers to improve micronutrient bioavailability. Strategies described range from plant breeding, use of fertilizers and genetic engineering to changes in food preparation and processing methods at the household level ...
Madhavan Nair K - - 2001
Strategies such as dietary diversification and food fortification have yielded significant results in controlling iron deficiency anaemia in developed countries. Reducing the prevalence of iron deficiency anaemia in developing countries is still a matter of importance. The major factors responsible for iron deficiency anaemia in the vulnerable segments of developing ...
Sandström B - - 2001
A potential risk of interactions between micronutrients affecting absorption and bioavailability has to be considered in any supplementation or fortification strategy. At levels of essential micronutrients present in foods, most micronutrients appear to utilise specific absorptive mechanisms and not be vulnerable to interactions. In aqueous solutions and at higher intake ...
Xu G - - 2001
Iron, hydrogen peroxide, biochelators and oxalate are believed to play important roles in cellulose degradation by brown-rot fungi. The effect of these compounds in an 'enhanced' Fenton system on alpha-cellulose degradation was investigated specifically in regard to molecular weight distribution and cellulose-iron affinity. This study shows that the degradative ability ...
Pereira C M - - 2001
Square-wave voltammetry (SWV) has been used to study the transfer of zinc(II) ion under static conditions, assisted by 5,6-diphenyl-3-(2-pyridyl)-1,2,4-triazine (DPT), through gel-supported microinterfaces. Microhole arrays created by laser photoablation of thin polyester films were used to support an organic gel phase prepared by addition of 1,3:2,4-dibenzylidenesorbitol (DBS) to a solution ...
Mann T - - 2001
OBJECTIVE: The phenomenon of overeating the very foods that one is trying to resist is potentially consistent with both an ironic process account of overeating and a reactance account of the desire for "forbidden fruit." These two models are tested. METHOD: Participants in two studies were prohibited or not prohibited ...
Jeppsen R B - - 2001
Iron is estimated to be deficient in the diets of one fifth of the world's population. Iron is commonly provided as a supplemental nutrient in industrialized countries for uses of choice. In other countries of the world, it may be required as an overt addition to the diet to prevent ...
Terwilliger N - - 2001
Hemocyanin is present throughout the decapod crustacean's life, usually as one-hexamer and two-hexamer oligomers. Hemocyanins of some decapod crustaceans undergo changes in subunit composition and oxygen affinity during development. Maternal hemocyanin is taken up from the hemolymph via endocytosis by the oocyte. Embryo hemocyanin differs in subunit composition from hemocyanin ...
Puyfoulhoux G - - 2001
Iron deficiency, one of the most important nutritional problems in the world, can be caused not only by foods deficient in iron but also by poor availability of dietary iron. Iron food fortification in combination with highly available iron from supplements could effectively reduce this deficiency. The aim of this ...
Hotz C - - 2001
This study aimed to develop and assess the feasibility of a home-based method to reduce the phytate content of maize and improve zinc bioavailability from maize-based complementary diets in rural Malawi. A method of extracting phytate through the soaking of pounded maize was developed, and found to reduce phytate content ...
Samman S - - 2001
BACKGROUND: Phenolic compounds act as food antioxidants. One of the postulated mechanisms of action is chelation of prooxidant metals, such as iron. Although the antioxidative effect is desirable, this mechanism may impair the utilization of dietary iron. OBJECTIVE: We sought to determine the effect of phenolic-rich extracts obtained from green ...
MacPhail A P - - 2001
The dietary intake of iron in underdeveloped countries is based mainly on non-hem iron which is absorbed to a lesser degree that hem iron and is subjected to many interferences from inhibitors generally present in the diets, such as phenols, phytates, fibers, etc. Food fortification with iron is considered to ...
Bosscher D - - 2001
A method for in vitro determination of available calcium, iron and zinc content from infant food after digestion was evaluated. This method introduced an intraluminal digestive phase, adapted to the gastrointestinal conditions of infants younger than 6 months of age, prior to continuous flow dialysis of the resultant gastric digest. ...
Olivares M - - 2001
Iron amino acid chelate is being increasingly considered in programs for iron fortification of foods. The bioavailability of iron bis-glycinate chelate given in water was studied using a double-isotopic method in a group of 14 women. Iron absorption from aqueous solutions of 15 mg/L of elemental iron as either iron ...
Mccleskey T M - - 2001
We have studied the photochemical reduction of uranyl to generate UO2 without hydrogen reduction. Formate and oxalate were examined as potential reductants that only lead to CO2 production as a side product. Despite the similar nature of the two reductants, the mechanism for quenching the uranyl excited-state changes drastically and ...
Bosscher D - - 2001
BACKGROUND: Variation in the bioavailability of calcium (Ca), iron (Fe), and zinc (Zn) occurs because of interactions of food components in the gastrointestinal microenvironment. Bioavailability is preferably determined by in vivo tests, but these are expensive, labor-intensive, time consuming, and often unethical. As an alternative, in vitro methods can be ...
Ruiz N - - 2000
Permeable iron barriers have become a popular choice as a passive, cost-effective in situ remediation technology for chlorinated solvents. However, loss of reactivity over time, due to a build up of corrosion products or other precipitates on the iron surface, is a great concern. Because first-order rate constants for trichloroethylene ...
Thane C W - - 2000
OBJECTIVE:: To examine risk factors for poor iron status in British toddlers. DESIGN:: National Diet and Nutrition Survey (NDNS) of children aged 1.5-4.5 years. SETTING:: Mainland Britain, 1992/93. SUBJECTS:: Of the 1859 children whose parents or guardians were interviewed, a weighed dietary intake was provided for 1675, and a blood ...
Hurrell R F - - 2000
Fe absorption was measured in adult human subjects consuming different cereal foods fortified with radiolabelled FeSO4, ferrous fumarate or NaFeEDTA, or with radiolabelled FeSO4 or ferric pyrophosphate in combination with different concentrations of Na2EDTA. Mean Fe absorption from wheat, wheat-soyabean and quinoa (Chenopodium quinoa) infant cereals fortified with FeSO4 or ...
Grewal H K - - 2000
In India, the prevalence of iron deficiency is high due to both low iron intake and low availability from foods of plant origin. We investigated the effect of different wheat products on iron availability by testing haemoglobin regeneration efficiency using a rat model. Wheat grains processed into whole wheat flour, ...
Harvey P W - - 2000
OBJECTIVE:: To determine the impact of contaminant iron and geophagy on iron intake and status of persons living in developing countries. DESIGN:: Literature for review was identified by searching Medline and Agricola, from appropriate other texts and from three reports from the Opportunities for Micronutrient Interventions (OMNI) Project of USAID. ...
Harris J R - - 2000
The multimeric/higher oligomeric states of the two isoforms of Haliotis tuberculata hemocyanin (HtH1 and HtH2) have been assessed by transmission electron microscopy (TEM) of negatively stained specimens, for comparison with previously published structural data from keyhole limpet hemocyanin (KLH1 and KLH2) [see Harris, J.R., Gebauer, W., Guderian, F.U., Markl, J., ...
Chan S M - - 2000
OBJECTIVE: A 'ginger vinegar soup' and other special dietary practices have been traditionally recommended for postpartum Chinese women. This paper describes these practices in the first 6 weeks postpartum, and details of the calcium and iron content of the 'ginger vinegar soup'. DESIGN AND SUBJECTS: Results of this paper were ...
Wu J - - 2000
Surface waters of the subtropical Sargasso Sea contain dissolved inorganic phosphate (DIP) concentrations of 0.2 to 1.0 nanomolar, which are sufficiently low to result in phosphorus control of primary production. The DIP concentrations in this area (which receives high inputs of iron-rich dust from arid regions of North Africa) are ...
Martínez Graciá C - - 2000
The purpose of this study was to evaluate the technological feasibility of fortifying homogenized weaning food with a porcine heme concentrate. The stability of iron and the organoleptic qualities of two infant weaning foods (a commercial homogenized nonfortified weaning food, NFWF, and the same food fortified with 0.5% of porcine ...
Bovell-Benjamin A C - - 2000
BACKGROUND: There is a need to determine whether iron absorption from iron amino acid chelates is protected from inhibition by dietary phytate and regulated normally by iron status. OBJECTIVE: The objective of this study was to compare iron absorption from ferrous sulfate, ferrous bisglycinate, and ferric trisglycinate in whole-maize meal; ...
Lysionek A E - - 2000
Radio-iron tests are frequently used to measure the bioavailability of different iron sources for food fortification. As the labeling procedures must be done under laboratory conditions, complementary studies should be carried out to evaluate the bioavailability of iron sources produced on an industrial scale. The iron bioavailability of SFE-171 (ferrous ...
MacDonald R S - - 2000
The inhibition of growth is a cardinal symptom of zinc deficiency. In animals fed a zinc-inadequate diet, both food intake and growth are reduced within 4-5 d. Despite the concomitant reduction in food intake and growth, reduced energy intake is not the limiting factor in growth, because force-feeding a zinc-inadequate ...
Shay N F - - 2000
Zinc is an essential nutrient that is required in humans and animals for many physiological functions, including immune and antioxidant function, growth and reproduction. Many aspects of zinc deficiency-induced anorexia have been well studied in experimental animals, most notably the laboratory rat. There is evidence that suggests zinc deficiency may ...
Wapnir R A - - 2000
Recent clinical and experimental findings have reinforced the link among zinc deficiency, malnutrition and diarrheal disease. Because there is a strong association between protein and zinc content in virtually all types of foods, insufficient protein intake may often be the cause of zinc deficiency. Compensatory mechanisms operating in monogastric species ...
Shaw N S - - 2000
Laver belongs to the genius of Porphyra and is the most valuable seaweed in the aqua-culture industry. It contains higher iron than many other plant foods. The bioavailability of iron from laver was evaluated in a rat hemoglobin regeneration assay. Reagent-grade ferrous sulfate was used as the reference standard, and ...
Holmes R P - - 2000
BACKGROUND: The amount of oxalate ingested may be an important risk factor in the development of idiopathic calcium oxalate nephrolithiasis. Reliable food tables listing the oxalate content of foods are currently not available. The aim of this research was to develop an accurate and reliable method to measure the food ...
Westermann B - - 2000
In Nautilus pompilius, tracer experiments with 14C-labelled food show that the midgut gland, caecum and crop are involved in absorption of nutrients. According to liquid scintillation and light- and electron-microscopic autoradiography, the midgut gland exhibits the highest activity, followed by the caecum and crop. The density of silver precipitates is ...
Fairgrieve S I - - 2000
Cribra orbitalia (CO), an osseous sign of anemic stress, occurs in 67% (n = 296) of the pre-Roman (n = 153) and Roman (n = 143) period crania from the Dakhleh Oasis, Egypt. CO is primarily a childhood condition in these samples, and its prevalence is significantly higher in virtually ...
Krebs N F - - 2000
Iron and zinc are trace minerals that are of critical importance to the young infant for normal growth and development. Exclusive feeding of human milk provides adequate amounts of both of these nutrients for normal term infants for approximately the first 6 mo. of life. Current recommendations for introduction of ...
Mancuso J R - - 2000
Free radicals arising from lipid peroxides accelerate the oxidative deterioration of foods. To elucidate how lipid peroxides impact oxidative reactions in food emulsions, the stability of cumene hydroperoxide was studied in hexadecane or trilaurin emulsions stabilized by anionic (sodium dodecyl sulfate; SDS), nonionic (Tween 20), and cationic (dodecyltrimethylammonium bromide; DTAB) ...
Sandstead H H - - 2000
Low consumption of foods rich in bioavailable iron (Fe) and zinc (Zn) such as meat, particularly red meat, and high consumption of foods rich in inhibitors of Fe and Zn absorption, such as phytate, certain dietary fibers and calcium, cause Fe and Zn deficiencies. Neuropsychologic impairment is one of several ...
Du S - - 2000
Three current equations for estimating iron bioavailability were evaluated, and adjustments were proposed that would allow us to most effectively study iron bioavailability in China. Dietary intake data were obtained from 24-h dietary recalls taken over three consecutive days as part of the third Chinese National Nutrition Survey. Hemoglobin status ...
Heimbach J - - 2000
Iron EDTA [sodium iron (Fe(3+)) ethylenediaminetetraacetic acid (EDTA)], shown to have a significant beneficial effect on iron status by increasing iron bioavailability in human diets, has been proposed for use as a fortificant in certain grain-based products including breakfast cereals and cereal bars. This paper presents an assessment of the ...
Kwun I S - - 2000
The zinc nutritional status in south Koreans was established by evaluation of zinc, calcium and phytate intakes, the molar ratio of phytate:zinc, and the millimolar ratio of phytate x calcium:zinc. The intakes of iron and magnesium were also estimated. Sampling was designed so that it was representative of the national ...
< 3 4 5 6 7 8 9 10 11 12 13 >