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Search Results: 1 - 10 of 2131 matches for " Extract mixtures "
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Reduction in hypercholesterolemia and risk of cardiovascular diseases by mixtures of plant food extract: a study on plasma lipid profile, oxidative stress and testosterone in rats
Mohamed, Doha A.,Hamed, Thanaa E.,Al-Okbi, Sahar Y.
Grasas y Aceites , 2010, DOI: 10.3989/gya.021210
Abstract: The present study was postulated to prepare and evaluate the influence of two plant food extract mixtures on plasma lipid profile, oxidative stress and testosterone levels in rats fed a hypercholesterolemic diet. The safety of the studied extract mixtures was evaluated through the determination of liver and kidney functions. The total phenolic contents, tocopherols, fatty acids and unsaponifiable matter (UNSAP) in the extract mixtures were determined. Rats fed a hypercholesterolemic diet were given a daily oral dose (300 mg/kg rat body weight) of either mixture I or II for a month and compared with a control hypercholesterolemic group and a normal control group. Results showed that α-tocopherol was 0.750 and 4.017 mg, γ-tocopherol was 0.564 mg and 0 and δ-tocopherol was 15.23mg and 0.634mg/100g for mixtures I and II, respectively. The phenolic contents in mixtures I and II were 36.74 and 23.72 g gallic acid equivalent/100g mixture, respectively. The GLC investigation of UNSAP revealed that stigmasterol and b-sitosterol were the major phytosterols in mixtures I and II, respectively followed by campesterol in both. The GLC analysis of the fatty acids showed that oleic acid was the major fatty acid in both extract mixtures. Results from the animal experiment showed that feeding a hypercholesterolemic diet produced a significant increase in total lipids, total cholesterol (T-Ch), triglycerides (TGs), low density lipoprotein cholesterol (LDLCh), T-Ch/HDL-Ch, TGs/HDL-Ch and malondialdehyde (MDA) and a significant reduction in high density lipoprotein cholesterol (HDL-Ch), vitamin E, b-carotene and testosterone. Rats fed a hypercholesterolemic diet and given mixture I or II showed significant improvements in plasma lipid profile compared to the hypercholesterolemic control group. This improvement was associated with a significant reduction in oxidative stress reflected by an elevation in plasma levels of antioxidants (vitamin E and b-carotene) and a reduction in plasma MDA levels. The plasma level of testosterone increased significantly in the rats fed the hypercholesterolemic diet and given mixture I or II compared to the hypercholesterolemic control. Plasma testosterone showed a significant negative correlation with plasma TGs and TGs/HDL-Ch in the hypercholesterolemic control rats. The studied extract mixtures showed complete safety towards liver and kidney functions. In conclusion the tested extract mixtures showed an improvement in the plasma lipid profile, a significant increase in testosterone and a decrease in oxidative stress with promising prevention
Alfalfa Establishment, Performance, and Persistence in Mississippi When Planted into a Bermudagrass Sward  [PDF]
Joshua A. White, Rocky Lemus
American Journal of Plant Sciences (AJPS) , 2015, DOI: 10.4236/ajps.2015.613224
Abstract: Alfalfa is a high quality forage that is not often utilized in the southeastern United States because of its perceived lack of adaptability to the area. However, the risk of growing alfalfa could be partially mitigated by its inclusion into an existing bermudagrass system that makes up a large portion of pastures and hay fields in Mississippi. Alfalfa was planted into an existing bermudagrass hay field at a rate of 17, 22, 28 and 39 kg·ha-1 in no-till and minimum till sod preparation and analyzed for three growing seasons. Tillage did not affect any of the variables observed but seeding rate and time affected DM (dry matter) yield, forage nutritive value and plot composition. The increasing alfalfa seeding rate increased alfalfa yield in the plot but this was isolated to only the first year. Dry matter yields decreased over the three years due to the decrease in alfalfa composition, but throughout the growing season DM yields increased after the first year suggesting bermudagrass recolonization within the plot. Forage nutritive value was positively affected with as little as 20% of the plot composed of alfalfa suggesting that even thinning stands by the third year might offer economic advantages.
Comportamento de leguminosas (Adesmia, Lotus, Trifolium) em mistura com festuca
Scheffer-Basso, Simone Meredith;Vendrúsculo, Marice Cristine;Baréa, Karinne;Benincá, Rubens Cácio;Lubenow, Ricardo;Cecchetti, Dileta;
Revista Brasileira de Zootecnia , 2002, DOI: 10.1590/S1516-35982002000900006
Abstract: overseeding temperate legumes is one of the most practices to increase the quantity, quality and sustainability of perennial pastures in southern brazil. during the years of 2000 and 2001 the response of six temperate legumes (adesmia latifolia (wild), lotus corniculatus, l. subbiflorus, l. uliginosus and trifolium repens cv. yi and cv. regal) was evaluated in mixture with tall fescue (festuca arundinacea). there was a period of 475 days between sowing date and the last cut and six cuts were made; on the autumn-winter/2000 only one cut was made, on the spring-summer, three cuts and on the autumn-winter/2001, two cuts. the intervals between cuts ranged between 43 and 91 days, being reduced in the warm season. during the total assay period, the average of the mixtures yielded 15038 kg/ha of dm; in the warm season 54% of this total was produced, with an average growth rate of 46 kg/ha/day of dm. in the cold season of 2000 and 2001 this rate was of 22 and 24 kg/ha/day of dm. the birdsfoot trefoil and white clover cv. yi were the most productive legumes; the former was the best in the warm season (3500 kg/ha of dm) and the last participated with 86,3% in the mixture in the autumn-winter/2001, with 2300 kg/ha/day of dm. the mixtures containing these legumes presented the smallest quantity of weeds and produced 13663 and 11,184 kg/ha of dm respectively, being 82% and 71% of these totals composed of legumes, fescue and ryegrass. a. latifolia did not have a good establishment and its contribution was only 0,84% in the first cut. the l. subbiflorus had a good establishment on the first year, but it disappeared from the mixture in the second year. l. uliginosus had a good establishment and persistence producing up to 1400 kg/ha of dm in the autumn/2001.
Predictability of the Consistency of Porridges Using Mixtures of Different Flours  [PDF]
Irene S. T. de Carvalho, Yvonne Granfeldt, Ann-Charlotte Eliasson, Petr Dejmek
Food and Nutrition Sciences (FNS) , 2013, DOI: 10.4236/fns.2013.49121

The purpose of this study was to investigate the predictability of the consistency of blended porridges based on the volume fractions of separate porridges made from orange-fleshed sweet potato, cowpea, dehulled soybean, dehulled sorghum and maize flour (dehulled, commercial and germinated). Accurate predictions could be made for 13 of the 21 blends investigated. The consistency of porridge consisting of mixtures of cowpea with orange-fleshed sweet potato, and cowpea with dehulled soybean was lower than expected, and was attributed to the different size distributions of the swollen flour particles. Blends containing germinated maize showed significantly lower consistency than expected in both porridges with starchy continuous phase and porridges with proteinaceous continuous phase. It was thus concluded that both amylolytic and proteolytic activity are of importance in the ameliorating effects of germinated maize.

Dirichlet Brownian Motions  [PDF]
Hafedh Faires
Open Journal of Statistics (OJS) , 2014, DOI: 10.4236/ojs.2014.411085
Abstract: In this work we introduce a Brownian motion in random environment which is a Brownian constructions by an exchangeable sequence based on Dirichlet processes samples. We next compute a stochastic calculus and an estimation of the parameters is computed in order to classify a functional data.
Technological quality of grain of spring wheat cultivated as pure varieties and their mixtures
Miros?aw ?mijewski,Zygmunt Gil
Acta Scientiarum Polonorum : Technologia Alimentaria , 2008,
Abstract: Technological quality of grain and flour of milling mixtures ‘Omega’ + ’Igna’ + ’Henika’ and ‘Omega’ + ’Igna’ + ’Banti’, made of three varieties of grain mixed in equal proportion were compared to quality of wheat which was cultivated in mixtures of the same varieties. Before sowing those varieties were compiled in equal proportion. ‘Omega’ and ‘Igna’ are varieties susceptible to infestation by fungi unlike ‘Henika’ and ‘Banti’ varieties. Wheat was cultivated with or without fungicide protection. Hectolitre weight, content of low molecular SDS-soluble protein and number of insoluble protein in flour were more profitable for mixtures made of pure stands than variety mixtures. As far as vitreousness of grain, milling properties of grain, content of protein in grain and SDS + ME-soluble protein are concerned the quality of variety mixtures was higher for the variety mixture in comparison with mixtures made of pure stands. Fungicide protection in the cultivation of pure varieties and varieties mixtures increased value of hectolitre weight and filling and uniformity of grain.
Maximum Cumulative Ratio (MCR) as a Tool for Assessing the Value of Performing a Cumulative Risk Assessment
Paul S. Price,Xianglu Han
International Journal of Environmental Research and Public Health , 2011, DOI: 10.3390/ijerph8062212
Abstract: Due to the vast number of possible combinations of chemicals to which individuals are exposed and the resource-intensive nature of cumulative risk assessments, there is a need to determine when cumulative assessments are most required. This paper proposes the use of the maximum cumulative ratio (MCR) as a tool for this evaluation. MCR is the ratio of the cumulative toxicity received by an individual from exposure to multiple chemical stressors to the largest toxicity from a single chemical stressor. The MCR is a quantitative measure of the difference in an individual’s toxicity estimated using a chemical-by-chemical approach and using an additive model of toxicity. As such, it provides a conservative estimate of the degree to which individuals’ toxicities could be underestimated by not performing a cumulative risk assessment. In an example application, MCR is shown to be applicable to the evaluation of cumulative exposures involving up to 81 compounds and to provide key insights into the cumulative effects posed by exposures to multiple chemicals. In this example, MCR values suggest that individuals exposed to combinations of chemicals with the largest Hazard Indices were dominated by the contributions of one or two compounds.
Utiliza??o de planejamento em rede Simplex na previs?o de propriedades mecanicas de pe?as ceramicas vermelhas
Alexandre, J.;Toledo, R.;Saboya, F.;Pereira, M.;
Ceramica , 2001, DOI: 10.1590/S0366-69132001000300008
Abstract: in general, the brick ceramic industry uses clayey soils from sedimentation basin and/or from weathered rock as raw material. due to their nature, these soils, most of the time, are extremely heterogeneous at their natural state. this heterogeneity is not only related to their mineralogical composition but also related to their grading and the degree of mineral weathering. therefore, an important question arises: how to predict a desirable specific behavior of these materials with such a variable characteristic ? it is very well known that ceramic workers apply an empirical procedure, combining different materials with known properties to manufacture these products. thus, this paper presents a method to help in overcome this problem by applying a numerical routine which is used to predict specific final properties of different soil admixtures. it is also a helpful tool to determine the ideal admixture proportion that will show some required property, starting from the previously known behavior of the original components and some basic admixtures. the obtained results by carrying out laboratory tests in small ceramic bricks are compared to those predicted ones in order to verify the model suitability. this study is performed in a laboratory scale but it can be easily adapted to the industrial production process, enhancing the economy and preserving the environment from the predatory exploration of borrow areas.
Avalia??o das cultivares de bananeira Prata-An?, Thap Maeo e Caipira em diferentes sistemas de plantio no norte de Minas Gerais
Gon?alves, Valdeir Dias;Nietsche, Silvia;Pereira, Marlon Cristian Toledo;Silva, Sebasti?o de Oliveira e;Santos, Telma Miranda dos;Oliveira, Janaína Ribeiro;Franco, Lidiane Rodrigues Londe;Ruggiero, Carlos;
Revista Brasileira de Fruticultura , 2008, DOI: 10.1590/S0100-29452008000200018
Abstract: banana is one of the tropical fruits more consumed in the world, answering for approximately 10% of the world trade of fruits. the purpose of this work was to evaluate the growth and production of three banana cultivars under three planting systems, in two production cycles, in the period from march 2004 to october 2006, in janaúba, minas gerais. the experimental design was in randomized blocks and two statistical analyses: first: prata an? in six different planting systems; second: factorial 2 x 2 + 1, with four repetitions and six useful plants per parcel. the evaluated characteristics were: plant height, pseudostem circumference, total number of leaves, number of green leaves in the crop, number of days from planting to harvest, bunch weight, productivity, number of hands and fingers per bunch. the appraised characteristics were submitted to the variance analysis, being the treatments effects compared by the test of tukey to 5% of probability. the cultivar mixture and the usage of borders did not influence most of the growth characteristics on the three studied cultivars. the cultivar thap maeo was superior to the caipira in most of the appraised characteristics in the first and second cycles. the planting system with one border was superior. the analysis of the cultivar prata an? presented significant difference for the characteristics of green leaves number in the crop in the second cycle, number of hands/ bunch and number of fingers/bunch inside of the six planting systems.
Evaluación del proceso de fatiga de mezclas asfálticas mediante un nuevo procedimiento cíclico de barrido de deformaciones: EBADE
Revista de la construcción , 2011, DOI: 10.4067/S0718-915X2011000200006
Abstract: this paper presents a new experimental procedure to characterize fatigue behaviour of asphalt mixtures, called ebade procedure. it has been developed at the road research laboratory based in the technical university of catalonia (upc-barcelona tech). the procedure consists of applying cyclic tension-compression loads in a displacement-controlled uniaxial test at different strain levels. by doing so it is possible to obtain two key strain values in the characterization of asphalt mixtures fatigue behaviour. those are the strain level at which the mixture does not undergo fatigue (endurance limit) and the strain level at which critical fatigue failure takes place. in addition, ebade procedure allows one to emulate the fatigue process a pavement goes through when it has to sustain thermal stresses. in this paper the ebade procedure is detailed, and the main results and conclusions obtained in the experimental study carried out in order to evaluate its sensitivity are exposed.
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