Tópicos Sugeridos dentro de su búsqueda.
https://purl.org/pe-repo/ocde/ford#5.02.04 7 Lepidium meyenii 4 Lepidium peruvianum 4 alimento funcional 4 andean products 4 biosynthesis 4 biosíntesis 4 más ...
Mostrando 1 - 20 Resultados de 90 Para Buscar 'compuesto based function*', tiempo de consulta: 1.50s Limitar resultados
1
tesis de grado
En este trabajo de investigación, se estudiaron que compuestos son más óptimos como material adsorbente para el tratamiento de aguas, trabajando con ferrita y diatomita naturales. Para optimizar las propiedades de adsorción de cada uno de los materiales, se buscó adherir un compuesto derivado del carbono como el grafeno de tal forma que se pueda crear sinergias con sus propiedades excepcionales de adsorción, ya probados para la eliminación de metales pesados y contaminantes del agua. Siendo el grafeno un material investigado en los últimos años, lo cual ha permitido que sea desarrollado y utilizado para preparar estructuras compuestas con otros materiales, al mejorar sus propiedades y optimizar las características estructurales básicas, mejorando la capacidad de adsorción al ponerse en contacto con los contaminantes; facilitando la difusión de las moléculas contaminantes so...
2
El objetivo de este trabajo de investigación fue los hidrocarburos aromáticos tienen importancia dentro de la industria, porque son la base de muchos productos o son esenciales para la fabricación de estos ' permiten que adquieran propiedades para su óptimo funcionamiento. Como se ha podido comprobar a través de la previa investigación, los hidrocarburos aromáticos se hallan en una serie de productos o plásticos, caucho, pinturas, colorantes, explosivos, pesticidas o detergentes, o perfumes, fármacos gasolina y aceites. La mayoría de hidrocarburos aromáticos son tóxicos, nocivos, fácilmente inflamables o requieren de un cuidado especial dentro de las industrias. Es por esto que en todos los casos de hidrocarburos desarrollados anteriormente se recomienda que se usen medidas estrictas de seguridad para manipularlos y almacenarlos. De lo contrario, pueden causar daños en...
3
tesis de grado
Se elaboró producto alimenticio liofilizado utilizando mezcla de jugos de maracuyá (Passiflora edulis) y camu camu (Myrciaria dubia), frutas tropicales de la amazonia, que aportan componentes bioactivos importantes para el cuerpo humano. Se formularon mezclas de maracuyá/camu camu (v/v: 50/50; 70/30 y 90/10) usando encapsulante 0,2% CMC y 1,5% Goma arábiga, se formaron cubos de 1,5 cm de espesor congelados a -24°C/24 horas y secados en un liofilizador a 0,2 y 165 Pa durante 24 horas. Se determinaron las propiedades fisicoquímicas del jugo y en polvo liofilizado, como color, polifenoles totales y vitamina C. Los resultados indican 15 °Brix, 74,61 mgAG/ml y 24,55 mgAA/ml (vitamina C) en jugo maracuyá; 6 °Brix, 622,88 mgAG/ml y 2714,10 mgAA/ml (vitamina C) en jugo camu camu, lo que confirma una ligera sinergia en la mezcla de jugos 50/50 y en polvo liofilizado con 0,2% CMC a una pr...
4
tesis de grado
One of the main problems in the health area is the low efficiency of the currently used drug delivery systems. As a result, in recent years there has been an increased interest in the development of new delivery vehicles, highlighting the use of silica-based materials since they are reported to be biocompatible, non-toxic, mechanically and chemically stable, as well as having a functionalizable chemical surface. In this work we present the synthesis of spherical silica nanoparticles (NPsSiO2) synthesized by the modified Stöber method, with the use of an alkoxide precursor tetraethyl orthosilicate, in aqueous medium and ammonium hydroxide as catalyst. It was characterized to determine the presence of siloxane (Si-OSi), silanol (Si-OH) and amino groups was determined by Fourier transform IR spectroscopy (FT-IR), by scanning electron microscopy (SEM) and transmission electron microscopy (T...
5
tesis de maestría
Tuberculosis is a leading killing disease worldwide with more than 9 million people a ected per year. Current diagnostic methods exhibit several disadvantages; one of the most promising alternatives to overcome this is the development of nanostructured diagnostic systems which are able to detect molecules associated with certain diseases. Graphene since its discovery has been the focus for the development of these sensing elements due to its excellent electronic properties. In this work, a graphene-based eld e ect transistor (FET) has been developed for tuberculosis DNA detection, in order to set the basis for a diagnostic method that overcomes current limitations. The sensing elements composed of graphene monolayers were manufactured in the stages of annealing of the substrate, addition of the linker and functionalization with the addition of a probe DNA for tuberculosis detection. Addi...
6
tesis de maestría
Tuberculosis is a leading killing disease worldwide with more than 9 million people a ected per year. Current diagnostic methods exhibit several disadvantages; one of the most promising alternatives to overcome this is the development of nanostructured diagnostic systems which are able to detect molecules associated with certain diseases. Graphene since its discovery has been the focus for the development of these sensing elements due to its excellent electronic properties. In this work, a graphene-based eld e ect transistor (FET) has been developed for tuberculosis DNA detection, in order to set the basis for a diagnostic method that overcomes current limitations. The sensing elements composed of graphene monolayers were manufactured in the stages of annealing of the substrate, addition of the linker and functionalization with the addition of a probe DNA for tuberculosis detection. Addi...
7
tesis de grado
Universidad Nacional Agraria La Molina. Facultad de Pesquería. Departamento Académico de Acuicultura e Industrias Pesqueras
8
tesis de grado
The present work presents a series of studies carried out based on the antioxidant capacity of quinoa seeds, both raw, germinated, in flour, or in bread, and subjected to different controlled processes, and evaluating their increase or decrease in capacity. antioxidant Quinoa stands out in the world of foods for its high nutritional content, in this study its value as a functional food is highlighted, due to its high content of antioxidants. The antioxidant activity of the quinoa seeds was evaluated, measured by the methods: DPPH, ORAC, ABTS, FRAP and discoloration of beta carotene. The results obtained showed greater antioxidant capacity than most pseudocereals, with the exception of buckwheat. Likewise, the antioxidant activity of quinoa seeds, subjected to different processes, such as cooking, washing, spreading, baking and drying, was evaluated; which show highly significant differen...
9
artículo
Some dye-sensitized solar cells were prepared using TiO2 modified with CuO (TiO2-CuO) like a working electrode. P25 commercial powder and small amounts of CuO powder were used in preparing the modified coating. The coating was deposited following doctor Blade method, on a conductive substrate SnO2:F, which was previously deposited on a TiO2 blocking layer by spray pyrolysis technique. For sensitization of the coating, a ruthenium complex, cis-bis (isothiocyanate) bis (2,2'bipiridil-4,4'dicarboxilato) ruthenium (II) ammonium bistetrabutil, also known as N719, was used. The CuO powder was structurally characterized by X-ray diffraction and its morphology was studied by scanning electron microscopy. The functional groups of TiO2 and CuO were studied by infrared spectroscopy. The oxidation and reduction cycles of Cu were shown by cyclic voltammetry. Through incident photon to current convers...
10
artículo
In this work, it has been studied the influence of oxygenated functional groups on adsorption property of an activated carbon (CA), which was prepared from aguaje seeds (Mauritia flexuosa L. F.) by a chemical activation with phosphoric acid. Later the activated carbon was oxidized with nitric acid. The adsorptive capacity of phenolic compounds such as phenol, 4-chlorophenol and 4-nitrophenol were compared using both of the adsorbents, the activated carbon (CA) and the oxidized activated carbon (ACA). The characterizations of both activated carbons were analyzed by nitrogen adsorption measurements, Boehm titration, scanning electron microscopy (SEM) and FTIR spectroscopy. The oxidized sample (ACA) showed an increase in the microporous area from 756 m2/g to 1272 m2/g, likewise ACA presented an increase in the concentration of oxygenated functional groups from 4,22 mmolH+.g-1 to 4,82 mmolH+...
11
artículo
The germination of quinua improves the content of polyphenols, flavonoids, amino acids, dietary fiber, vitamin E, antioxidants and other bioactive compounds, making this pseudocereal a nutritious and healthy source for the preparation of functional foods. The aim of this work was to assess the effect of the germination of quinua on the nutritional, biological and functional properties, in turn to be able to analyze the potential that this golden grain has in the food industry. For the systematic review, the databases (Scopus, Scielo and Science Direct) were used, following the PRISMA guideline and the PIO strategy (Population, Intervention, Outputs), which helped to formulate the search equations and to identify the most relevant articles of the last 5 years. The results of the bibliometric analysis showed that the germination of quinua improves the nutritional properties and the content...
12
artículo
The germination of quinua improves the content of polyphenols, flavonoids, amino acids, dietary fiber, vitamin E, antioxidants and other bioactive compounds, making this pseudocereal a nutritious and healthy source for the preparation of functional foods. The aim of this work was to assess the effect of the germination of quinua on the nutritional, biological and functional properties, in turn to be able to analyze the potential that this golden grain has in the food industry. For the systematic review, the databases (Scopus, Scielo and Science Direct) were used, following the PRISMA guideline and the PIO strategy (Population, Intervention, Outputs), which helped to formulate the search equations and to identify the most relevant articles of the last 5 years. The results of the bibliometric analysis showed that the germination of quinua improves the nutritional properties and the content...
13
artículo
This study analyzes the relationship that presents 11 aromatic compounds with heterocyclic Schiff bases and substituted in position meta and para with antioxidant activity, using the method UB3LYP/6-311G(d,p) within density functional theory.We determine the parameters: bond dissociation enthalpy (BDE), ionization potential (IP), protons dissociation enthalpy (PDE), affinity of protons (PA), electrons transfer enthalpy (ETE) and radical stabilization energy (RSE), all in gaseous phase. The results show that electrodonorssubstituents increases BDE when they are in position para, IP in position meta and para and ETE in position para. In addition, the electroatractors cause an increase in PDE and PA at position meta and para.
14
tesis de grado
La biodiversidad del Perú es amplia en cuanto a plantas y frutos exóticos, no obstante, no todos poseen un impacto comercial. En los últimos años existe en el país una tendencia que procura revalorizar los frutos nativos promoviendo la oferta de productos y subproductos al mercado internacional. Sin embargo, el consumo de frutos poco conocidos es reducido en consecuencia, su distribución y transformación a subproductos es escasa. Por este motivo, el presente estudio propuso formular un helado funcional y aceptable sensorialmente a base de ambos frutos. Fueron evaluadas las propiedades fisicoquímicas (pH, acidez, sólidos solubles y colorimetría) y funcionales (contenido de carotenoides, compuestos fenólicos, acido ascórbico y capacidad antioxidante). Asimismo, se evaluó la aceptabilidad general y por atributos. La composición funcional de las pulpas presentó diferencias, do...
15
tesis de grado
Hoy en día las personas buscan productos más saludables y la tendencia es consumir productos de origen natural. Por ello, se propuso elaborar un alimento funcional compuesto por sábila, arándanos y colágeno cuyo fin es reforzar el sistema inmunológico de las personas. Los beneficios otorgados son efectos antiinflamatorios, antioxidantes, antibacterianos y regenera tejidos internos. Además, contiene aminoácidos esenciales, vitaminas, minerales y proteínas; escaso contenido de azúcar, grasas y colesterol. Promueve la secreción de insulina. Protegen la salud del corazón, el sistema digestivo y el cerebro. Al identificar un mercado por explorar y explotar, se propone “DUSALU”, y se planteó determinar la viabilidad técnica, económica, tecnológica, financiera, de mercado y social para la implementación de una planta productora de gelatina en polvo con suplementos nutricion...
16
tesis de grado
Está comprobado que el consumo de compuestos bioactivos atribuyen propiedades beneficiosas en nuestra salud, contribuyendo en la disminución de riesgos patológicos, tales como ciertas enfermedades cardíacas, el cáncer, envejecimiento prematuro etc. Existen diversidades de alimento que contienen propiedades bioactivas, su acción se basa en proteger las células de los daños producidos por los radicales libre donando un electrón al radical libre y así estar químicamente estable. Este compuesto se caracteriza por tener propiedades farmacológicas, generalmente estos compuestos están presentes en los alimentos funcionales de vegetales comestibles. Los alimentos funcionales son componentes usuales de la dieta que además de exhibir propiedades nutritivas poseen efectos terapéuticos asociados a su contenido de bioactivos. Nuestro estudio se basa en las descripciones de algunos comp...
17
tesis de grado
El Tocosh de papa (Solanumtuberosum) es ampliamente utilizado en diversas zonas de nuestro país por sus propiedades medicinales. El presente trabajo de investigación tuvo como objetivo general evaluar el efecto cicatrizante de una crema elaborada a base de Solanumtuberosum (Tocosh) y membrana testácea de huevo de gallina. Empleados de manera empírica con la misma función. En los procedimientos, primero se determinó los metabolitos del Tocosh (Solanumtuberosum) obteniendo compuestos fenólicos y aminoácidos libre en alta concentración y, flavonoides, alcaloides y azúcares reductores en moderada concentración. Para la investigación farmacológica tópica, se preparó una crema base. A esta se le añadió las concentraciones de 1.5%.
18
tesis de grado
This project involves the development of an electricity generation plant based on biogas produced by the decomposition of organic waste located in Metropolitan Lima. This project is attractive because the state is constantly promoting the development of Renewable Energy Resources (RER) through favorable legislation. The aim is to give it a greater participation in the topic of clean energies in the energy matrix. The entity OSINERGMIN has been conducting energy bidding auctions for a period of 20 years since 2010. In order to asses the feasibility of the present project it is necessary to carry out several studies, which are composed by chapters. Chapter 1 explains the general aspects of the research. In addition, the problem, the specific and general objectives. Chapter 2 explains the aspects of the market study, it is worth mentioning that our only client is the Peruvian government. In...
19
tesis de grado
En este trabajo, Propone un método adecuado para el diseño y aplicación de geotextiles y geomembranas en plantas de tratamiento de aguas residuales y así cumplir la función que de ellos se espera y alcanzar una prolongada duración como construirlo en el menor tiempo posible, además de cumplir con la protección del medio ambiente. Presenta el desarrollo de los geosintéticos, con sus respectivos ensayos, propiedades, especificaciones técnicas para el diseño de los geotextiles y geomembranas. Estos estudios, permitirán hacer los diseños respectivos, para el geotextil diseño por función y para la geomembrana diseño por espesor. Con estos métodos permiten diseñar un sistema de impermeabilización eficiente y estable en plantas de tratamiento especialmente en lagunas de estabilización, donde está compuesto por un medio de protección (geotextil) y otro impermeabilizante (ge...
20
artículo
In recent years, the consumption of beverages has increased; however, the excessive consumption of processed and packaged foods with a high sugar content is detrimental to human health as it has led to an increase in various metabolic diseases, which is why it is essential to introduce into the food chain new options of beverages enriched with fruit pulp, rich in polyphenolic compounds and antioxidants. This research sought to develop a functional beverage based on soybean juice and aguaymanto pulp sweetened with stevia, for which nine treatments were formulated consisting of 70, 80 and 90% soybean juice, 30, 20 and 10% aguaymanto pulp and 0.08, 0.10 and 0.12% stevia, and their physicochemical characteristics, sensory acceptability and bioactive composition were evaluated. The results showed that treatment 3 presented the highest sensory acceptability by the panelists with a score of 3.3...