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1
artículo
Publicado 2012
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The aim of the study is the principal parameters establish or to determine for the production of flour of eggplant of excellent quality, depending on the temperature, time of dried and size of the particles of flour, which finally define the performance of the process. One used fruits in his ideal condition of maturity organoléptica, for preventing it from oxidizing for action of the enzimas, there was in use a solution of 80 parts for million (ppm) of metabisulfito of potassium. The temperature of dried was of 65°C during 16h, which was carried out in a dryer of trays of stainless steel, with control of temperature and time. (Dryer of 20 trays of 50 X 40 cm c/u). For the grinding there was used a molino of hammer of stainless steel of 10kg/h, the flour being obtained by size of minor particle of 0.5 mm.
2
artículo
Publicado 2012
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The aim of the study is the principal parameters establish or to determine for the production of flour of eggplant of excellent quality, depending on the temperature, time of dried and size of the particles of flour, which finally define the performance of the process. One used fruits in his ideal condition of maturity organoléptica, for preventing it from oxidizing for action of the enzimas, there was in use a solution of 80 parts for million (ppm) of metabisulfito of potassium. The temperature of dried was of 65°C during 16h, which was carried out in a dryer of trays of stainless steel, with control of temperature and time. (Dryer of 20 trays of 50 X 40 cm c/u). For the grinding there was used a molino of hammer of stainless steel of 10kg/h, the flour being obtained by size of minor particle of 0.5 mm.
3
tesis de grado
Publicado 2025
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El objetivo de este manuscrito fue evaluar el efecto del aceite esencial de muña (Minthostachys mollis) en el recubrimiento a base de harina de maca negra (Lepidium meyenii Walp.) y montmorillonita para prolongar la vida útil del melón (Cucumis melo L.) mínimamente procesado. Los cubos de melón se dividieron en cuatro tratamientos: T1 control (sin recubrimiento), T2, T3 y T4 con 0,1 % v/v, 0,2 % v/v y 0,3 % v/v de aceite esencial de muña respectivamente, además se les adicionó harina de maca (2,5 %) y montmorillonita (0,3 %), posteriormente todos los tratamientos se almacenaron durante 12 días a 5±1 °C. Se analizaron la pérdida de peso, acidez titulable, pH, sólidos solubles totales, color, firmeza, actividad de agua, evaluaciones microbiológicas de mohos y levaduras, Salmonella spp. y Escherichia coli. El T2 mostró menor pérdida de peso (8,7 %) y firmeza (22,3 %), ademá...
4
artículo
Publicado 2007
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The country has inmumerable nutrional natural resources of Andean Character, one of which is oca, which not yet has taken advantage of and amassed its consumption; reason for which this study raises to make an analysis of the types of oca which they exist in the mountain range of the Ancash region, determining its physical and chemical characteristics for its later recommendation, dentroi of a contex of an industrialization possibility. In order to fulfill this assignment, professional efforts and of field have come together. In this sense it has been possible the participation of the university through his laboratories of the university through his laboratories and Centers of Processing, education and independent, producing investigators of oca population in general, with the purpose of making tests of laboratory for the obtaining of flour and nectar.
5
artículo
Publicado 2007
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The country has inmumerable nutrional natural resources of Andean Character, one of which is oca, which not yet has taken advantage of and amassed its consumption; reason for which this study raises to make an analysis of the types of oca which they exist in the mountain range of the Ancash region, determining its physical and chemical characteristics for its later recommendation, dentroi of a contex of an industrialization possibility. In order to fulfill this assignment, professional efforts and of field have come together. In this sense it has been possible the participation of the university through his laboratories of the university through his laboratories and Centers of Processing, education and independent, producing investigators of oca population in general, with the purpose of making tests of laboratory for the obtaining of flour and nectar.
6
artículo
Publicado 2015
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The research involved two stages: In the first one, screening methodology was performed toevaluate the effect of the most significant factors: temperature, time and ratio raw material:solvent (MP: S) on the extraction of fructooligosaccharides (FOS) and reducing sugars (AR)from yacon flour. A factorial arrangement 2K were used; the levels for the factors were: time5-40 minutes; ratio MP: S 1:10-1:70 g / ml; temperature 30-90 ° C; responses variables wereextraction yield of FOS and AR. The results indicated that only the factor ratio MP: S hadsignificant effect on the extraction of FOS and AR (p-value <0.05). In the next stage, manylevels of ratio MP: S (1:10 to 1: 100 g / ml) were evaluated holding for time 5 minutes andtemperature at 30°C. Maximum extraction and greatest recovery of the extract was obtainedwith ratio MP:S 1:30. Finally, two kinetic models were used to describe the ...
7
artículo
Publicado 2009
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Wood plastic composites of recycled polypropylene PPr and Pinus elliottii (PIE) were developed using soybean oil, stearic acid, caprylic acid and itaconic acid grafted with polypropylene (PPgAI) as coupling agents. The composites were processed in a co-rotating twin screw extruder and injection molded. The materials were characterized by mechanical properties, thermogravimetric analysis, morphological, physical and contact angle. The results showed that soybean oil acted as a plasticizer and reduced mechanical properties of composites. On the other hand, the addition of stearic acid, caprylic acid and PPgAI resulted in an increase in flexural strength of 8, 20 and 29%, respectively, when compared to the composite without compatibilizer. The composites developed with coupling agent commonly used, polypropylene grafted with maleic anhydride (PPgAM) had a 35% increase in flexural strength. ...
8
artículo
Publicado 2009
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Wood plastic composites of recycled polypropylene PPr and Pinus elliottii (PIE) were developed using soybean oil, stearic acid, caprylic acid and itaconic acid grafted with polypropylene (PPgAI) as coupling agents. The composites were processed in a co-rotating twin screw extruder and injection molded. The materials were characterized by mechanical properties, thermogravimetric analysis, morphological, physical and contact angle. The results showed that soybean oil acted as a plasticizer and reduced mechanical properties of composites. On the other hand, the addition of stearic acid, caprylic acid and PPgAI resulted in an increase in flexural strength of 8, 20 and 29%, respectively, when compared to the composite without compatibilizer. The composites developed with coupling agent commonly used, polypropylene grafted with maleic anhydride (PPgAM) had a 35% increase in flexural strength. ...
9
artículo
Publicado 2022
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The unique process has been strengthened with the adoption of two directives within the Judiciary, which promote virtuality, concentration of procedural acts and orality. In this way, this branch of the State evidences its commitment to the progress of family procedural law and the expeditious settlement of cases in favor of children and adolescents. The author of this article analyzes directives from the jurisdictional scope, developing contributions for the correct use by the judicial user.
10
artículo
Publicado 2010
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Industrial effluents without treatment or supervision by the authorities pollute the environment. Solving the problem does not go only by the control, supervision and penalties for companies that generate effluents, require its own investigation as well as develop specific treatments, accessible and affordable that can be adopted by each industry. The primary treatment is removal by physical or chemical means a substantial part of sedimentable or floating material, reducing an important fraction of the organic load, which represents a significant percentage of solid contaminants. Within the types of primary treatment quote coagulation and flocculation. The main objective was to evaluate the efficacy of two coagulants in reducing the pollution potential of effluents from the fruit processing plant. To make the primary treatment: were assayed two chemical substances, aluminum sulfate as in...
11
artículo
Publicado 2010
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Industrial effluents without treatment or supervision by the authorities pollute the environment. Solving the problem does not go only by the control, supervision and penalties for companies that generate effluents, require its own investigation as well as develop specific treatments, accessible and affordable that can be adopted by each industry. The primary treatment is removal by physical or chemical means a substantial part of sedimentable or floating material, reducing an important fraction of the organic load, which represents a significant percentage of solid contaminants. Within the types of primary treatment quote coagulation and flocculation. The main objective was to evaluate the efficacy of two coagulants in reducing the pollution potential of effluents from the fruit processing plant. To make the primary treatment: were assayed two chemical substances, aluminum sulfate as in...
12
artículo
The aim of this study was to extract collagen from the waste produced in the processing of anchovies (canned and surimi). To this end, non-collagenous proteins was solubilized with a solution of 0,1N sodium hydroxide and neutralized with successive washes with water (pH close to neutral). Then, the residues were decalcified with a EDTA 0,5M solution; degreased with butanol 10% and finally the collagen protein were solubilized with acetic acid 0,5M and precipitated with sodium chloride 2,6M. Collagen precipitated was dialyzed and lyophilized. The hydroxyproline content (Hip) were quantified in waste and lyophilized collagen, getting the values of 6,5 and 52,9 mg of hydroxyproline/g sample, respectively. The solubility of lyophilized collagen decreased about 40% at a concentration of 12% NaCl. Gel electrophoresis showed a strong band of approximately 110 kDa molecular weight that correspon...
13
artículo
The coffee industry, coffee shops and restaurants are in constant expansion and growth. Consequently, large amounts of Spent Coffee Grounds (SCG) are generated, which are solid coffee residues obtained after the ground coffee leaching process. This residue can be reused because of its compounds as phenolics. The objective of the present study was to evaluate the effect of extraction time (30-90 min) assisted by ultrasound (45kHz and 50 W), liquid-solid ratio (10-40 ml/g) and ethanol concentration (20-93.8%) in the total phenolic compounds (CFT) content expressed as mg gallic acid/g SCG dry matter. Surface response methodology (MSR) was used, as an efficient technique that minimizes the number of experiments, through the central rotational compound design (DCCR) to determine the effect of these 3 factors and to perform the optimization of the extraction process conditions of total phenoli...
14
artículo
The coffee industry, coffee shops and restaurants are in constant expansion and growth. Consequently, large amounts of Spent Coffee Grounds (SCG) are generated, which are solid coffee residues obtained after the ground coffee leaching process. This residue can be reused because of its compounds as phenolics. The objective of the present study was to evaluate the effect of extraction time (30-90 min) assisted by ultrasound (45kHz and 50 W), liquid-solid ratio (10-40 ml/g) and ethanol concentration (20-93.8%) in the total phenolic compounds (CFT) content expressed as mg gallic acid/g SCG dry matter. Surface response methodology (MSR) was used, as an efficient technique that minimizes the number of experiments, through the central rotational compound design (DCCR) to determine the effect of these 3 factors and to perform the optimization of the extraction process conditions of total phenoli...
15
artículo
The coffee industry, coffee shops and restaurants are in constant expansion and growth. Consequently, large amounts of Spent Coffee Grounds (SCG) are generated, which are solid coffee residues obtained after the ground coffee leaching process. This residue can be reused because of its compounds as phenolics. The objective of the present study was to evaluate the effect of extraction time (30-90 min) assisted by ultrasound (45kHz and 50 W), liquid-solid ratio (10-40 ml/g) and ethanol concentration (20-93.8%) in the total phenolic compounds (CFT) content expressed as mg gallic acid/g SCG dry matter. Surface response methodology (MSR) was used, as an efficient technique that minimizes the number of experiments, through the central rotational compound design (DCCR) to determine the effect of these 3 factors and to perform the optimization of the extraction process conditions of total phenoli...
16
artículo
The coffee industry, coffee shops and restaurants are in constant expansion and growth. Consequently, large amounts of Spent Coffee Grounds (SCG) are generated, which are solid coffee residues obtained after the ground coffee leaching process. This residue can be reused because of its compounds as phenolics. The objective of the present study was to evaluate the effect of extraction time (30-90 min) assisted by ultrasound (45kHz and 50 W), liquid-solid ratio (10-40 ml/g) and ethanol concentration (20-93.8%) in the total phenolic compounds (CFT) content expressed as mg gallic acid/g SCG dry matter. Surface response methodology (MSR) was used, as an efficient technique that minimizes the number of experiments, through the central rotational compound design (DCCR) to determine the effect of these 3 factors and to perform the optimization of the extraction process conditions of total phenoli...
17
18
artículo
Publicado 2019
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The leather tanning industry produces a large amount of wastewater and solid waste containing a significant amount of chromium, the wet blue chip is a solid micro-cocoa particulate material impregnated with chromium synthetic oil and grease and tanning agents. The objective of the study was to investigate the production of an agglomerate from an adhesive obtained from the wet blue chip produced by alkaline hydrolysis at 60 ° C temperature, 0.4N NaOH and 4 hrs. for neutralization. To obtain the agglomerate, 2 kg of sawdust of 1 mm of ebony wood was used, which was dried at 105 ° C for 4 hours, then manual mixing was carried out in two proportions; 125 g of adhesive and 250 g of sawdust (0.5 / 1), and a second proportion of 250 g of adhesive and 250 g of sawdust (1/1), the mixtures were carried out for 20 minutes at room temperature, the pressing was cold at 100kg / cm2, in stainless ste...
19
artículo
Publicado 2020
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In the current scientific literature refers to the contributions from the Neurosciences for the understanding of learning processes. This is how, as well as from the branches of Neurosciences, such as Cognitive Neuroscience, specific contributions are bornthat facilitates the understanding of these processes. On the other hand, Neuroeducation as a new discipline proposes to take these contributions from the Neurosciences for the improvement of educational practices, and thereby optimize learning. The objective of this article is to analyze the theoretical contributions in force from the Neurosciences, to understand the learning situated in educational contexts. For this, the relationship of the concepts Neuroscience, Cognitive Neuroscience and Neuroeducation is alluded to. In addition, the main contributions from the Neurosciences are analyzed to understand the processes of neuroplastici...
20
artículo
The current study has determined that the materials from brass to bismuth, 1.11%, 1.46% and 2.48% respectively, have the following characteristics: the brass to bismuth material drawing, uniform round bar of 19 mm which microstructure is formed by α + β, shows inclusions of bismuth in the grain limits and in the same grain. The grain deformation is smaller on the surface, and it becomes bigger as it reaches the center. The mechanical properties of the 19 mm drawing material, I and II are bigger than the established by the ASTM B 16/B 16M, being the HRB hardness higher than the established by the norm. Also the material is wrought to obtain pieces for gas valves. The machinability index of the brass’s drawing materials that contains bismuth between 1.0 and 2.5% should be in a range from 85 and 90
