A methodology for the selection of a routine purity test for insoluble beta(1?3)glucan

Abstract

The Servqual model was redesigned in relation to the context of the local company Metro Pizza in Los Mochis, Sinaloa; the main change was the orientation of the visual that corresponds to the intensive use of the image of the transnational franchises to the taste that represents a competitive advantage in local firms that know the flavor in the culture of regional. The differences between the expected and perceived quality service were analyzed through the dimensions proposed by Zeithaml and Bitner. The results show in the tangible that customers expect more flavor than the image. " Medwell Journals, 2010.",,,,,,"10.3923/ibm.2010.189.198",,,"http://hdl.handle.net/20.500.12104/39018","http://www.scopus.com/inward/record.url?eid=2-s2.0-78149474915&partnerID=40&md5=d788587c5947bca90ab140ca2e047efe",,,,,,"3",,"International Business Management",,"189

198",,"4",,"Scopus",,,,,,"Franchise; Local pizza company; Quality service; Servqual model",,,,,,"A model to measure the quality service in a local company of pizza in los mochis, Sinaloa",,"Article" "40825","123456789/35008",,"Navarrete-Heredia, J.L., Entomotogia, Ctro. de Estud. en Z., CUCBA, Universidad de Guadalajara, Apdo. Postal 234, 45100 Zapopan, Jalisco, Mexico; Marquez, J., Lab. de Morfofisiologia Animal, Fac. de Ciencias, UNMA, 04510, México, D.F, Mexico",,"Navarrete-Heredia, J.L.

Marquez, J.",,"1998",,"Gastrisus newtonorum, new species, is described based on specimens from the states of Mexico, Guerrero, Jalisco and Morelos. One specimen was examined by Bernhauer, however it was misidentified as G. mimetes Sharp. The Mexican record of G. mimetes in Bernhauer and Schubert's and Blackwelder's catalogs was probably based on this misidentification. The two species are compared, and the aedeagi are illustrated. Distributional and biological data are provided.",,,,,,,,,"http://hdl.handle.net/20.500.12104/39046","http://www.scopus.com/inward/record.url?eid=2-s2.0-0031758681&partnerID=40&md5=a7e560007bdc1e24aa32a99ec820444b",,,,,,"4",,"Entomological News",,"225

232",,"109",,"Scopus

WOS",,,,,,,,,,,,"A new Mexican species of Gastrisus (Coleoptera: Staphylinidae)",,"Article" "40792","123456789/35008",,"Pérez, M.N., Departamento de Salud Pública, Centro Universitario de Ciencias Biológicas Y Agropecuarias, Universidad de Guadalajara, Carretera Guadalajara-Nogales, Km. 151/2, Zapopan, Jalisco, C.P. 45110, Mexico; Rodríguez, T.V., Scientific Direction, Clinical Hospital Humanitas, Milan, Italy; Cabrera, E., Departamento de Salud Pública, Centro Universitario de Ciencias Biológicas Y Agropecuarias, Universidad de Guadalajara, Carretera Guadalajara-Nogales, Km. 151/2, Zapopan, Jalisco, C.P. 45110, Mexico",,"Perez, M.N.

Rodriguez, T.V.

Cabrera, E.",,"2009",,"Beta(1?3)glucan isolated from the cell wall of Saccharomyces cerevisiae is a biological response modifier (BRM) stimulating resistance against bacterial, viral, fungal and protozoal diseases. This polysaccharide has a high molecular weight, which makes it very difficult to achieve a purity test. A comparative study of different analytical procedures for beta(1?3)glucan from S. cerevisiae was conducted in order to establish a reliable routine analytical methodology for quality control of this active ingredient in pharmaceutical products. With this aim, different combinations of the analytical procedure steps were tested, including three alternatives for the acid hydrolysis step, three for neutralization, two for gas-liquid chromatographic derivatization and two internal standards. The glucose yield, precision, time consumption and reagent cost per sample were determined for 10 sample replicates. All gas chromatographic determinations were conducted using packed GLC columns and an FID detector. The selected analytical method showed 83.61 3.48% glucose yield, the shortest relative time consumption (54.2%) and the lowest cost of reagents (7.4%) and consisted of a combination of 72% sulfuric acid hydrolysis, 25% ammonium hydroxide neutralization and alditol acetate derivatization using xylose as internal standard. Copyright " 2009 Prous Science, S.A.U. or its licensors. All rights reserved.