Garcia-Caceres R.G.,Escuela Colombiana de Ingenieria Julio Garavito |
Perdomo A.,Pontifical Xavierian University |
Ortiz O.,University of Pamplona |
Beltran P.,Technological Institute of Los Mochis |
Lopez K.,Technological Institute of Los Mochis
DYNA (Colombia) | Year: 2014
This paper introduces the supply and value chains of the Colombian cocoa agribusiness. For such purpose, we have identified not only the agents, phases, stages and factors influencing the planting and harvesting of the product, but also the chocolate and confection production process, as well as the final consumption. Finally, the national production is described in the context provided by the international market. © The author; licensee Universidad Nacional de Colombia.
Narvaez-Flores M.,Autonomous University of Chihuahua |
Sanchez-Madrigal M.A.,Autonomous University of Chihuahua |
Quintero-Ramos A.,Autonomous University of Chihuahua |
Paredes-Lizarraga M.A.,Technological Institute of Los Mochis |
And 4 more authors.
Food and Bioproducts Processing | Year: 2015
The effect of ultrasound power and temperature on the extraction of carbohydrates from agave was evaluated. Extraction kinetics of fructans (F), total carbohydrates (TC) and reducing sugars (RS) were obtained at different ultrasound powers (28-49 mW/mL) and temperatures (20-40 °C). The mass transfer coefficients of F, TC and RS were calculated and a model using the production functions of Cobb-Douglas was developed. Microstructural analysis was performed to evaluate the effect of ultrasound and temperature on carbohydrates extraction. Ultrasound and temperature had impact on F, TC and RS extractions. After 5 min, no increases in carbohydrates content were observed, showing an asymptotic tendency. Results showed a strong sonication effect in carbohydrate extraction at any extraction temperature. The maximum F, TC and RS contents were 7.2, 7.79 and 0.54 g/100 g d.m., respectively, at 49 mW/mL and 40 °C. The fructans volumetric mass transfer coefficients ranged from 0.0585 ± 4.2 × 10-4 to 0.0834 ± 12.51 × 10-4 s-1 (R2 = 0.86-0.92). An overall model was developed based on the Cobb-Douglas function, which was adjusted adequately to estimate the fructans extraction assisted with ultrasound (R2 = 0.954). Tissue structural changes were present due to cell-wall modifications and breakdowns of sonicated agave samples, which have enhanced the carbohydrates extraction. © 2015 The Institution of Chemical Engineers. Published by Elsevier B.V. All rights reserved.
Cruz-Mendivil A.,University of the Americas in Chile |
Rivera-Lopez J.,Technological Institute of Los Mochis |
German-Baez L.J.,Autonomous University of Sinaloa |
Lopez-Meyer M.,Centro Interdisciplinario Of Investigacion Para El Desarrollo Integral Regional Del Ipn |
And 4 more authors.
HortScience | Year: 2011
A simplified protocol to obtain transgenic tomato plants was established. The effects of culture media composition and Agrobacterium concentration were evaluated. The highest shoot-forming capacity index (5.6) was observed when leaf explants were cultured for 6 weeks with 2 mg·L -1 zeatin, 0.1 mg·L -11 indoleacetic acid, and 300 mg·L -1 timentin. Shoot elongation and root formation were performed in one step on growth regulator-free media. The highest percentage (82%) of fully developed plantlets was obtained when shoots were cultured for 4 weeks with 0.5· Murashige and Skoog (MS) media and 15 g·L -1 sucrose. A 100% of plant survival rate was observed after 4 weeks of being transplanted to ex vitro conditions followed by fruit production (15 fruits/plant) after 2 more weeks. Transient expression of β-glucuronidase was visualized in 100% of the leaf explants infected with Agrobacterium at an OD 600 = 0.5 and cocultured for 48 h with 2 mg·L -1 benzylaminopurine, 0.1 mg·L -1 naphthaleneacetic acid, and 100 mM acetosyringone. Stable transformation was confirmed by histochemical glucuronidase assay and polymerase chain reaction (PCR) analysis with a total efficiency of 19.1%. The complete protocol, from shoot induction to fruit production of soil-adapted transgenic plants can be accomplished in only 4 months, and it seems to be very useful for both micropropagation and genetic transformation purposes.
Zizumbo A.,Tijuana Institute of Technology |
Licea-Claverie A.,Tijuana Institute of Technology |
Lugo-Medina E.,Technological Institute of Los Mochis |
Garcia-Hernandez E.,Zacatepec Institute of Technology |
And 2 more authors.
Journal of the Mexican Chemical Society | Year: 2011
Bagasse Fibers of sugarcane were modified with dichloromethylvinylsilane and consecutively grafted with polystyrene. For unmodified fibers, TGA showed two maximum decomposition peaks at 320°C and at 370°C. For silanized fibers, the most stable stage was shifted to a higher temperature of 470°C and to 510°C for silanized and polystyrene grafted fibers. Young moduli of composites increased from 1.9 GPa for non-treated fibers to 3.3 GPa for silanized and polystyrene grafted fibers. © 2011, Sociedad Química de México.
Solis-Valdez C.B.,Technological Institute of Los Mochis |
Barrientos-Contreras J.,Technological Institute of Los Mochis |
Escobar-Gonzalez B.,Autonomous University of Nuevo León |
Zepeda-Cavazos I.G.,Autonomous University of Nuevo León |
And 2 more authors.
Southwestern Entomologist | Year: 2015
The selection of oviposition sites by Aedes aegypti L. females was evaluated at El Fuerte, Sinaloa, Mexico. The study was done with ovitraps that contained paper strips as oviposition substrate, and water with spinosad, temephos, and water alone (check). Every week, oviposition substrates were removed and examined for egg laying. Results showed preference for spinosad with an oviposition activity index of 0.35 and for temephos 0.19 although the index was positive, on some sampling dates, they had repellent effect.
MAESTRA EN PLANIFICACIN DE EMPRESAS Y DESARROLLO REGIONAL El ITLM les da la ms cordial bienvenida a todos los profesionistas interesados en capacitarse para responder a la demanda de mercados que requieren de planificadores, especialistas que con una visin amplia, tanto en el tiempo como en los espacios econmico, financiero, poltico, tecnolgico y ambiental, sean capaces de elaborar planes, programas y proyectos que optimicen el uso de los recursos de la sociedad para lograr mejores condiciones de bienestar. Objetivo General Formar profesionales con las competencias necesarias para la planificacin y desarrollo de empresas de bienes y/o servicios, con un sentido de tica profesional y responsabilidad social, a travs de la adquisicin de conocimientos, habilidades y tcnicas que generen un espritu emprendedor, con procesos de innovacin que les permitan participar en procesos de investigacin, planificacin e intervencin para contribuir al desarrollo econmico y tecnolgico sustentable ...