Article
Effect of lodging type on the internal temperature and humidity of colonies of Melipona colimana (Hymenoptera: Meliponini) from a Mexican temperate zone
Fecha
2011Autor
Rodriguez-Sahagun, A.
Acevedo-Hernandez, G.
Rodriguez-Dominguez, J.M.
Rodriguez-Garay, B.
Cervantes-Martinez, J.
Castellanos-Hernandez, O.A.
Institución
Resumen
Somatic embryogenesis in Agave tequilana Weber var. Azul was affected by the interaction between the light regimes applied during the induction phase and the expression phase. When embryogenic calli was exposed to white or red light during the expression phase, an average of two germinated embryos per explant was obtained regardless of the light treatment used for callus induction. Conversely, the highest number of germinated embryos, an average of 18 per explant, was obtained when applying either white or red light during the induction phase and then wide-spectrum light during the expression phase. Culture medium had also a great influence in this process, with embryo germination being reduced by up to 70%, depending on the light treatment, when using Schenk and Hildebrandt (SH) medium instead of Murashige and Skoog (MS) medium. " 2010 Springer Science+Business Media B.V.",,,,,,"10.1007/s11240-010-9815-4",,,"http://hdl.handle.net/20.500.12104/40954","http://www.scopus.com/inward/record.url?eid=2-s2.0-79251644449&partnerID=40&md5=9ecddd570142d44cf80973728b585778",,,,,,"2",,"Plant Cell, Tissue and Organ Culture",,"271 275",,"104",,"Scopus WOS",,,,,,"Embryo germination; Embryogenic calli; Visible spectrum",,,,,,"Effect of light quality and culture medium on somatic embryogenesis of Agave tequilana Weber var. Azul",,"Article"
"42740","123456789/35008",,"Estrada-Girón, Y., Departamentos de Ingeniería Química, Universidad de Guadalajara, Blvd. Marcel García Barragan #1421 Colonia Olimpi, Guadalajara, Jal., 44430, Mexico; Aguilar, J., Departamentos de Ciencias Tecnológicas, Universidad de Guadalajara, Ave. Universidad 115, Ocotlán, Jal, 47810, Mexico; Morales-del Rio, J.A., Departamentos de Ciencias Tecnológicas, Universidad de Guadalajara, Ave. Universidad 115, Ocotlán, Jal, 47810, Mexico; Valencia-Botin, A.J., Departamentos de Ciencias Básicas, Universidad de Guadalajara, Ave. Universidad 115, Ocotlán, Jal, 47810, Mexico; Guerrero-Beltrán, J.A., Departamento de Ingeniería Química, Alimentos y Ambiental, Universidad de las Américas, Sta. Catarina Mártir, Cholula, Puebla. C.P. 72810, Mexico; Martínez-Preciado, A.H., Departamentos de Farmacobiología, Universidad de Guadalajara, Blvd. Marcelino García Barragan #1421 Colonia Olimp, Guadalajara, Jal., 44430, Mexico; Macías, E.R., Departamentos de Ingeniería Química, Universidad de Guadalajara, Blvd. Marcel García Barragan #1421 Colonia Olimpi, Guadalajara, Jal., 44430, Mexico; Soltero, J.F.A., Departamentos de Ingeniería Química, Universidad de Guadalajara, Blvd. Marcel García Barragan #1421 Colonia Olimpi, Guadalajara, Jal., 44430, Mexico; Solorza-Feria, J., Instituto Politécnico Nacional- CEPROBI, Carretera Yautepec-Jojut, Calle Cepr 8, Col. San Isidro, 62 731 Yautepec, Morelos, Mexico; Fernández, V.V.A., Departamentos de Ciencias Tecnológicas, Universidad de Guadalajara, Ave. Universidad 115, Ocotlán, Jal, 47810, Mexico",,"Estrada-Giron, Y. Aguilar, J. Morales-del Rio, J.A. Valencia-Botin, A.J. Guerrero-Beltran, J.A. Martinez-Preciado, A.H. Macias, E.R. Soltero, J.F.A. Solorza-Feria, J. Fernandez, V.V.A.",,"2014",,"The effect of the moisture content (55, 60 and 65% (w/w)) and temperature (30, 40 and 50 °C) on the X-ray diffraction (XDR), microstructural, pasting, thermal and rheological properties of nixtamalized dough (masa) from a corn hybrid variety (Zea mays sp.) is reported here. A complete set of rheological tests including temperature and frequency sweeps, steady shear and transient shear flow was performed in order to get detailed information on the food processing issues. The nixtamalization process affected significantly (P < 0.05) the microstructural and thermal properties of masa. Polarized Light microscopy and X-ray diffraction (XDR) showed that crystallinity in starch granules decreased for the masa; whereas, Scanning Electron Microscopy (SEM), showed swollen granules dispersed into a plasticized surface. Moreover, Differential Scanning Calorimetry (DSC) showed significant (P < 0.05) differences on the gelatinization enthalpy (?Hgel) of masa, where it increased with increasing the moisture content from 6.7 0.84 J/g for 55% (w/w) to 10.2 0.4 J/g for 60% (w/w). Frequency sweeps showed a predominant elastic behavior where the storage modulus (G?) was higher than the loss modulus (G?) and they were significantly (P < 0.05) affected by the moisture content and temperature into a small range. The steady shear data exhibited a shear-thinning flow behavior and followed a power law equation, where the power law index (n) decreased when the temperature and the moisture content increased. The effect of temperature on the shear-viscosity (?) was well described by the Arrhenius equation, exhibiting energy activation energy (Ea) values in the range from 25.52 to 59.35 KJ/mol. For transient shear test, all masas presented a stress overshoot at high shear rate before reaching a steady state. It was found that the amplitude of this overshoot depends on the shear rate. On the other hand, the stress relaxation test, which gives the main relaxation time (?), showed fast relaxation decay at short times, whereas at long times, a slow relaxation was observed. The ? values ranged from 10.46 to 0.43 s, which decreased with increasing shear rate. The rheological behavior of masa was related to a weak gel-like structure formation, composed by dispersed swollen starch granules into a cross-linked starch network, similar to a biocomposite material.",,,,,,,,,"http://hdl.handle.net/20.500.12104/40961","http://www.scopus.com/inward/record.url?eid=2-s2.0-84904305698&partnerID=40&md5=46c042d013abbb3f62182800df21f98f",,,,,,"2",,"Revista Mexicana de Ingeniera Qumica",,"429 446",,"13",,"Scopus WOS",,,,,,"Calorimetry; Linear and non-linear rheology; Microstructure; Nixtamalized corn masa (dough); Pasting curves; Starch",,,,,,"Effect of moisture content and temperature, on the rheological, microstructural and thermal properties of MASA (dough) from a hybrid corn (Zea Mays sp.) variety [Efecto del contenido de humedad y de la temperatura, en las propiedades reológicas, microestructurales y térmicas de masa de una variedad de maiz (zea mays sp.) híbrido]",,"Article"
"42735","123456789/35008",,"Macías-Macías, J.O., Bee Laboratory, Agricultural Production Department, University of Guadalajar, Independencia Nacional 151, Autlan de Navarro, Jalisco, Mexico; Quezada-Euan, J.J.G., Beekeeping Department, Faculty of Veterinary Medicine and Animal Husbandry, Universidad Autonoma de Yucatan, P.O. BOX 4-116, C.P. 97100, Merida, Yucatán, Mexico; González, J.M.T., Animal Production Department, South University Center, University of Guadalajara, Zapotlan el Grande, Jalisco, Mexico",,"MacIas-Macias, J.O. Quezada-EuAn, J.J.G. GonzAlez, J.M.T.",,"2011",,"Stingless bees are mainly tropical insects and only a few species live in temperate climates. Melipona colimana is a stingless bee endemic to temperate areas of western Mexico, where there is much interest in exploiting it for honey production and crop pollination. It is not known, however, if colonies of this species would adapt to hives necessary for commercial exploitation. Twenty four colonies were transferred to trunks and wooden boxes having walls with one of two thicknesses (2.5 and 10.0 cm). The internal and ambient temperature and humidity were monitored for three months during winter, at the end of which, the brood cell numbers, number of adults, and nest weights were assessed. There were differences in temperature (F 1 = 69.32; F 2 = 1769.33; DF = 3, 56; P < 0.05) and humidity (F 1 = 397.15; F 2 = 1028.11; DF = 3, 56; P < 0.05) between environmental data and internal data of nests during day 1 and night 2, respectively. The internal temperature was statistically similar during the day in all three lodgings, but at night the nests in thick wooden boxes had higher temperatures compared with the other two. There was a decrease in the development of the nests and bee populations in all three lodgings, and a lowest development occurred in thin-walled boxes, probably due to thickness reduction in the lodging walls. This bee species appears capable of maintaining control of the internal environment and this ability is enhanced by using greater thickness of the lodging walls as in this study. The use of boxes with thick walls is recommended for better nest development. " 2011 IBRA.