Extraccion y caracterizacion del aceite de las semillas de luffa cylindrica con y sin beneficio procedentes de dos departamentos del pais

Extraccion y caracterizacion del aceite de las semillas de luffa cylindrica con y sin beneficio procedentes de dos departamentos del pais
Author: Luisa Fernanda Amaya
Publisher:
Total Pages:
Release: 2005
Genre:
ISBN:

Resumen: EN LA REALIZACION DE ESTE TRABAJO DE GRADO, SE UTILIZARON SEMILLAS DE LUFFA CYLINDRICA CON Y SIN BENEFICIO DE PROCEDENTES EN LOS DEPARTAMENTOS DEL VALLE (MUNICIPIO DE OBANDO) Y RISARALDA (CORREGIMIENTO DE MORELIA, ZONA RURAL DE PEREIRA), SUMINISTRADAS POR LA EMPRESA ESTROCOL, PARA LA EXTRACCION Y CARACTERIZACION DEL ACEITE. SE REALIZO UN ESTUDIO DE LAS PRINCIPALES CARACTERISTICAS FISICAS Y QUIMICAS COMO DENSIDAD, INDICE DE REFRACCION, INDICE DE ACIDEZ, INDICE DE PEROXIDOS, INDICE DE YODO E INDICE DE SAPONIFICACION. TAMBIEN SE HIZO UN ANALISIS DE COMPOSICION DE ACIDOS GRASOS DEL ACEITE POR CROMATOGRAFIA DE GASES DE ALTA RESOLUCION. FINALMENTE SE HIZO EL ANALISIS ELEMENTAL DE LA TORTA EMPLEANDO ESPECTROSCOPIA DE ABSORCION ATOMICA, ESPECTROFOTOMETRIA VISIBLE Y TECNICAS VOLUMETRICAS.

Estudio de la fracción insaponificable obtenida del aceite extraído de la semilla de la luffa cylindrica

Estudio de la fracción insaponificable obtenida del aceite extraído de la semilla de la luffa cylindrica
Author: Juliana Fernández Tenorio
Publisher:
Total Pages:
Release: 2008
Genre:
ISBN:

Resumen: Se obtuvo y caracterizo la materia insaponificable del aceite de las semillas de la Luffa Cylindrica procedentes de Risaralda suministrada por la empresa ESTROCOL. La materia prima se sometio a un proceso de secado para la posterior extraccion del aceite por el metodo soxhlet, empleando Hexano como solvente. La saponificacion del aceite obtenido y la cuantificacion de la materia insaponificable se determino segun Norma Tecnica Colombiana NTC 235-2. El fraccionamiento se realizo empleando separacion en fase solida y dos sistemas de solventes: Hexano-Acetato de Etilo y Hexano-Diclorometano; donde las fracciones obtenidas fueron analizadas por cromatografia en capa delgada para observar la separacion de los compuestos esterolicos para su posterior analisis. La caracterizacion de la materia insaponificable se hizo por cromatografia de gases acoplado a masas, dando como resultado la posible presencia de fitoesteroles (Lanosterol (10.96%) y Ergosta-7,22-dien-3-ol,(3.beta.,5.alpha) (15.06%)) como componentes mayoritarios. Adicionalmente se determino el contenido de vitamina E y ƒÀ-Caroteno en el aceite de las semillas de la Luffa Cylindrica, empleando cromatografia liquida de alta eficiencia como metodo analitico; obteniendose un valor de 621 ppm para Vitamina E y de 58 ppm para ƒÀ-Caroteno. Los resultados obtenidos fueron comparados con aceites de origen vegetal y animal.

Estudio microbiologico del aceite de luffa cylindrica para su potencial uso en la industria cosmetica

Estudio microbiologico del aceite de luffa cylindrica para su potencial uso en la industria cosmetica
Author: Natalia García Ramírez
Publisher:
Total Pages:
Release: 2006
Genre:
ISBN:

Resumen: La empresa Estrocol localizada en Pereira, Risaralda se ocupa de la produccion de estropajo para usos de aseo personal a nivel nacional e internacional, en el proceso de manufactura del estropajo (Luffa Cylindrica) se retiran las semillas y estas se convierten en un subproducto sin utilidad actual alguna. Como alternativa de uso se planteo segun estudios realizados en la Universidad Tecnologica de Pereira la obtencion del aceite de las semillas, el cual presento caracteristicas fisico quimicas aptas para el uso cosmetico y/o alimenticio. Continuando con la caracterizacion de este aceite se realizo el presente estudio, llevandose a cabo la caracterizacion de la microbiota presente en el aceite para ratificar o descartar su uso cosmetico. El estudio micriobiologico comprendio recuento de mesofilos aerobios viables, recuento de mohos y levaduras, recuento de Staphylococcus aureus y recuento de coliformes totales y fecales; a dos temperaturas diferentes (4oc y 25oC) durante dos meses, cada ocho dias; para evaluar la degradacion del aceite, mostrando una gran mayor estabilidad el aceite almacenado a 4oC.

Banana: Genomics and Transgenic Approaches for Genetic Improvement

Banana: Genomics and Transgenic Approaches for Genetic Improvement
Author: Sukhada Mohandas
Publisher: Springer
Total Pages: 345
Release: 2016-09-08
Genre: Science
ISBN: 9811015856

Bananas and plantains are among the most important food and cash crops in the world. They are cultivated in more than 135 countries, across the tropics and subtropics, with an annual global production of ca. 130 million metric tonnes. Though bananas are one of the most important components of food security in many developing countries, banana production is threatened by both abiotic and biotic stresses. These include a wide range of diseases and pests, such as bunchy top virus, burrowing nematodes, black Sigatoka or black leaf streak, Fusarium wilt, etc. In recent years, considerable progress has been made and several biotechnological and genomic tools have been employed to help understand and unravel the mysterious banana genome. Molecular and genomic studies have helped to decipher the Musa genome and its evolution. Genetic linkage map and whole genome sequencing of both Musa acuminata and Musa balbisiana (progenitors of cultivated banana) have completely changed the way of thinking and the approach on banana crop improvement. Whole-genome sequencing has helped to improve the selection of quantitative traits such as yield, as well as the selection of optimal parents for developing required hybrids in breeding programs. Gene isolation and the analysis of mutants have helped in the characterization of genes of agronomic value and the associated regulatory sequences. With the advent of molecular markers and new statistical tools, it is now possible to measure the diversity, identify genes and useful alleles linked to important agronomic traits. Further these alleles can be incorporated into cultivars through marker assisted selection or through transgenic approach. Transgenic approaches are potential tools for direct transfer of these genes into popular cultivars, which are generally not amenable for conventional breeding techniques, in specific with crops such as bananas which are sterile, triploid and heterozygous thereby making it difficult to reconstruct the recurrent genotypes in banana. Transgenic techniques thus have helped overcome the difficulty of working with sterile, triploid banana crop. In the last five years, enormous amount of new information and techniques have been generated for banana. A comprehensive book entitled “Banana: Genomics and Transgenic Approaches for Genetic improvement” on banana genomics, latest transgenic technologies and tools available for improved crop development in banana will address all these requirements.

Crop Improvement

Crop Improvement
Author: Khalid Rehman Hakeem
Publisher: Springer Science & Business Media
Total Pages: 504
Release: 2013-06-13
Genre: Science
ISBN: 1461470285

The improvement of crop species has been a basic pursuit since cultivation began thousands of years ago. To feed an ever increasing world population will require a great increase in food production. Wheat, corn, rice, potato and few others are expected to lead as the most important crops in the world. Enormous efforts are made all over the world to document as well as use these resources. Everybody knows that the introgression of genes in wheat provided the foundation for the “Green Revolution”. Later also demonstrated the great impact that genetic resources have on production. Several factors are contributing to high plant performance under different environmental conditions, therefore an effective and complementary use of all available technological tools and resources is needed to meet the challenge.