Consejo para la Acreditación de la Educación Superior, A.C. (COPAES), México

El Consejo para la Acreditación de la Educación Superior, A. C. (COPAES), fundado en octubre de 2000, es la única instancia validada por la Secretaría de Educación Pública para conferir un reconocimiento oficial a los organismos acreditadores de los programas académicos de educación superior en México. Los organismos acreditadores reconocidos por COPAES están facultados para realizar procesos de evaluación conducentes a la acreditación de programas de licenciatura y técnico superior universitario o profesional asociado, en disciplinas o áreas definidas del conocimiento, en las instituciones de educación superior públicas y particulares del país.Peer Reviewe

Kinetic study of nordihydroguaiaretic acid recovery from Larrea tridentata by microwave-assisted extraction

Nordihydroguaiaretic acid (NDGA) is a powerful antioxidant that can be found in plants like Larrea tridentata (Zygophyllaceae), also known as creosote bush, which grows in semidesert areas of Southwestern United States and Northern Mexico [1]. Several studies have demonstrated that NDGA has important biological activities with great interest in the health area, such as antiviral, cancer chemopreventive, and antitumorgenic activities [2]. Extraction of bioactive compounds from plants is conventionally performed using a heat‐reflux extraction method. However, different techniques have been developed in order to decrease extraction time and solvent consumption, as well as to increase the extraction yield and enhance the extracts quality [3]. The objective of this study was to develop a microwave‐assisted extraction (MAE) method for NDGA recovery from Larrea tridentata leaves, and compare the obtained results with those found by using the conventional heat‐reflux extraction (HRE)

Evolución de factores competitivos de la empresa familiar ante cambios en la propiedad: el caso mexicano estudiado en Estado de México, Tamaulipas, Quintana Roo y Puebla

El interés creciente por hacer perdurar las actividades económicas de la empresa familiar conduce gradualmente a realizar mayores esfuerzos de investigación con la finalidad de mejorar su comprensión y conocimiento para así reducir su vulnerabilidad. El presente trabajo se inscribe en la Teoría de los Recursos y Capacidades y se interesa en conocer la evolución de algunos factores internos a la empresa familiar relacionados con la competitividad y el cambio de propiedad en cuatro estados de México. Este documento es el resultado del trabajo colectivo de una red de investigación, cuyos autores pertenecen a la Universidad Anáhuac, Universidad Autónoma de Tamaulipas, Universidad de Quintana Roo y Universidad de las Américas.

DISEÑO DE UN INSTRUMENTO PARA MEDIR LA COMPETENCIA PERSONAL Y ESTABLECIMIENTO DE METAS, CULTURA ORGANIZACIONAL, CLIMA ORGANIZACIONAL DE LA EMPRESA SAN TELMO SA DE CV

ResumenLa presente investigación consistió en el diseño y validación de un instrumento de medición basado en estrategias de endomarketing para la empresa San Telmo SA de CV, que cabe resaltar que tiene un alto índice de rotación de personal (200%). El employer brading consiste en la combinación de recursos humanos y marketing, cuyo objetivo es proyectar una buena imagen de la empresa al trabajador y que éste a su vez la refleje en la sociedad. Se adaptó el modelo de endomarketing de Christian Gronroos (2002) y se elaboró un instrumento de medición del establecimiento de metas, clima y la cultura organizacional basado en Hellriegel Slocum (2009). Los resultados indican un alto índice de fiabilidad (0.942) que fue medido a través del estadístico Alfa de Cronbach vía el software SPSS versión 2017.Palabras clave: Clima organizacional, Cultura organizacional, Endomarketing.DESIGN OF AN INSTRUMENT TO MEASURE PERSONAL COMPETENCE AND GOAL SETTING, ORGANIZATIONAL CULTURE, ORGANIZATIONAL CLIMATE OF THE COMPANY SAN TELMO SA DE CVAbstractThe present investigation consisted of the design and validation of a measurement instrument based on endomarketing strategies for the company San Telmo S.A. of C.V., which should be noted that has a high turnover rate of staff (200%). The employer brading consists of the combination of human resources and marketing, whose objective is to project a good image of the company to the worker and which in turn reflects it in society. The endomarketing model of Christian Gronroos (2002) was adapted and an instrument to measure goal setting, climate and organizational culture was elaborated based on Hellriegel Slocum (2009). The results indicate a high reliability index (0.942) that was measured through the statistic Cronbach's Alpha via software SPSS version 2017.Keywords: Endomarketing, Organizational climate, Organizational culture

Importancia de las levaduras no-Saccharomyces durante la fermentacion de bebidas alcoholicas

Durante la fermentación de bebidas alcohólicas intervienen principalmente levaduras del genero Saccharomyces. Sin embargo, existen otros géneros de levaduras que también participan en los procesos fermentativos, y rara vez son tomados en cuenta, estas son las levaduras denominadas no-Saccharomyces, entre las que destacan: Kloeckera apiculata, Hanseniaspora uvarum, Rhodotorula glutinis, Rhodotorula mucilaginosa, entre otras; las cuales mediante la producción de congenéricos, enzimas y proteínas pueden enriquecer organoléptica y nutricionalmente las bebidas alcohólicas, lo que ayudaría a satisfacer el paladar de los consumidores más exigentes. (Résumé d'auteur

Edible film based on candelilla wax to improve the shelf life and quality of avocado

In this study the effect of addition of ellagic acid (at three different concentrations) into candelilla wax matrix on shelf life and quality of whole avocados was studied. Control treatments were avocados coated with candelilla wax without ellagic acid and avocados without coating. The fruits were chosen for their maturity, size, free from infection and physical defects. All those samples were inoculated with a concentrated suspension of spores of Colletotrichum gloeosporioides, the main phytopathogenic fungus for avocados. Experiments were carried out completely divided into randomized groups. Changes in appearance, solids content, pH, aw, lightness (L* value) and weight loss were monitored during 6 weeks every 8 days. A sensory evaluation of avocados coated with the best edible film was also performed. Edibel films were able to reduce significantly the damage caused by C. gloeosporioides, reducing also significantly the change in appearance and weight loss in the fruits. Use of ellagic acid as part of the edible film has an important effect to improve the quality and shelf life of avocado. With this work we found that using this new protection system the negative effects of C. gloeosporioides can be successfully reduced

Polyphenolic content, in vitro antioxidant activity and chemical composition of extract from Nephelium lappaceum L. (Mexican rambutan) husk

Objective: To determinate the recovery of total polyphenolic compounds content, in vitro antioxidant activity and HPLC/ESI/MS characterization of extract from Nephelium lappaceum L. (Mexican rambutan). Methods: The rambutan husk extract was obtained by aqueous extraction and a polyphenolic fraction was recovered using Amberlite XAD-16. The total polyphenolic compounds content was determined by the Folin Ciocalteu and butanol-HCI methods. In vitro antioxidant activity was performed using ABTS and ferric reducing antioxidant power methods. Results: Mexican rambutan husk showed a total polyphenolic content of 582 mg/g and an evident antioxidant activity by ABTS and ferric reducing antioxidant power analysis. The HPLC/ESI/MS assay allowed the identification of 13 compounds, most of which belong to ellagitannins. Geraniin, corilagin and ellagic acid were present in the sample; the mineral composition was also evaluated. Conclusions: Rambutan husk cultivated in Mexico is a promising source for the recovery of added value bioactive compounds with antioxidant activity, which have potentialapplications as bioactive antioxidant agents for the treatment of diseases

Natural transmission of dengue virus by aedes albopictus at Monterrey, Northeastern Mexico

Dengue cases occur frequently at Nuevo Leon, Mexico, where Aedes aegypti (L.) and Ae. albopictus (Skuse) are present. Ae. albopictus is considered the second vector of dengue. Because it bites humans outdoors during the day, the mosquito plays an important role in transmission of dengue virus (DENV). However, no previous studies at Nuevo Leon indicated the role of the mosquito outdoors. To assess Ae. albopictus for dengue virus, mosquitoes were collected from April to October 2010 at five localities at Guadalupe and Santiago, Nuevo Leon, (Northeast) Mexico, by using two methods: engine backpack aspirator and ovitraps. In total, 1,836 Ae. albopictus and 833 Ae. aegypti mosquitoes were collected by ovitrap and engine backpack aspirator methods. Groups of mosquitoes were processed by RT-PCR. Examination for DENV infection of mosquitoes showed one positive group of four female Ae. albopictus from an ovitrap. This research provided information that showed transovarial transmission of dengue virus in Ae. albopictus occurred naturally, maintaining endemic levels of disease at a study site