Time filter

Source Type


Chavez-Rodriguez A.M.,University of Colima | Perez-Martinez J.D.,University of Colima | Ibarra-Junquera V.,Autonomous University of San Luis Potosi | Escalante-Minakata P.,University of Colima | And 3 more authors.
International Journal of Food Engineering | Year: 2013

In order to effectively process and utilize surplus bananas and those without the quality for export, in this research it is proposed to microencapsulate the banana juice by means of spray drying and using maltodextrin as the covering material. Three cultivars Enano gigante (Musa AAA, subgroup Cavendish), and the tetraploids hybrids (AAAA), FHIA-17 and FHIA-23 were selected for this research. Being Enano gigante, the cultivar shows the highest glass transition temperature. The drying parameters were established, depending upon the ratio of juice/maltodextrin and the drying air temperature. The optimal drying air temperature was 220°C for the three cultivars with a 20% juice/maltodextrin ratio for both the Enano Gigante and the FHIA-23, while in the FHIA-17 there were no significant differences between the juice/maltodextrin ratios. The morphology and size distribution of the microcapsules were observed by a scanning electron microscopy. The number of particles is directly proportional to the temperature and inversely proportional to the juice/maltodextrin ratio. A Weibull particle size distribution was common to all treatments. There is a correlation between the principal components and clustering analyses with the optimization of the system. The principal components analysis considers three Weibull parameters (obtained from the particle size distribution) and the powders moisture percentage.

Escalante-Minakata P.,University of Colima | Ibarra-Junquera V.,University of Colima | Chavez-Rodriguez A.M.,University of Colima | De Jesus Ornelas-Paz J.,CIAD | And 3 more authors.
International Journal of Food Engineering | Year: 2013

In this research, we produced concentrates of banana juices from three different cultivars of bananas (Enano gigante and two hybrids FHIA-17 and FHIA-23) by the freezing and thawing method. To track the cryoconcentration process, different parameters were monitored in the melted fractions, such as variation of the content of soluble solids, concentration of polyphenols (Folin-Ciocalteu), reducing sugar (DNS assay), minerals (K, Mg, Ca, P, Na, Mn, Cu and B) by inductively coupled plasma-optical emission spectroscopy and the main volatile compounds by headspace-GC-MS. It was found that the solution obtained during thawing showed higher concentrations than the original solution. The concentrations of polyphenols were duplicated in FHIA-17 cultivar (758.53 mg/100 ml), and the concentrates obtained in this study proved to be good sources of K and Mg 5,054.6 mg/l and 485.4 mg/l with around 70% and 40% of the recommended daily intake (RDI), respectively. In addition, the concentrates contained a very low level of Na around 1% of the RDI. Furthermore, the cryoconcentration process of the bioactive compounds presented a sigmoid behavior, and the inflexion point in the function was proposed as stop point of the process. Finally, the main volatile compounds reported as responsible for the banana aroma were identified, and its cryoconcentration proved. These results suggest that consumption of banana juice concentrates obtained by the freezing and thawing method can provide bioactive compounds needed for health. © 2013 by Walter de Gruyter Berlin / Boston 2013.

Figueroa-Torres G.M.,University of Sonora | Certucha-Barragan M.T.,University of Sonora | Acedo-Felix E.,CIAD | Monge-Amaya O.,University of Sonora | And 2 more authors.
Journal of the Taiwan Institute of Chemical Engineers | Year: 2015

The aim of this work was to establish the sorption equilibrium and kinetics of copper, Cu(II), and iron, Fe(II), removal by acidogenic biomass immobilized in clinoptilolite. The experimental methodology consisted of a series of batch studies in which immobilized acidogenic biomass was exposed to metallic solutions within a concentration range of: 0-300 mg/L Cu(II), 0-800 mg/L Fe(II) in single systems, and 0-1000 mg/L Cu(II )-Fe(II) in a binary system. It was found that copper and iron sorption by acidogenic biomass immobilized in clinoptilolite can be represented by the pseudo second-order type reaction. Data obtained from the equilibrium studies were adequately described by the Langmuir adsorption model. Although the predicted maximum biosorption capacity of copper increased from q max = 28.23 mgCu(II )/gSSV in the single system to q max = 35.46 mgCu(II )/gSSV in the binary system, it was found that co-existence of copper and iron ions decreased the actual biosorption capacity of the acidogenic biomass. The findings of this work indicate that acidogenic biomass immobilized in clinoptilolite is a promising low-cost biosorbent for the removal of copper and iron, but binary metal mixtures of copper and iron must be carefully selected to avoid low removal efficiencies during a biosorption-based wastewater treatment process. © 2015 Taiwan Institute of Chemical Engineers.

Gongora-Gomez A.,CIIDR Guasave | Garcia-Ulloa M.,CIIDR Guasave | Arellano-Martinez M.,National Polytechnic Institute of Mexico | Abad S.,CIAD | And 2 more authors.
Invertebrate Reproduction and Development | Year: 2016

The reproductive cycle and growth of the pen shell, Atrina maura, which was cultured in the Ensenada Pabellones lagoon system, Gulf of California, from March 2008 to March 2009, is described in this article. Histological techniques and the condition index were used to determine its reproductive condition. The sex ratio was 0.57 females:1.72 males within the population studied. There were no differences (χ2, p < 0.05) in shell length (SL) between males and females. The mean length of the sampled specimens ranged between 50.99 ± 4.86 mm and 218.16 ± 8.87 mm. The histological results confirmed that A. maura is a gonochoristic organism that presents synchronic development of the gonads. The maturity and spawning phases were observed throughout the study period, with the exception of March and May 2008. The frequency of the gonad development stages obtained per month suggests that this species reproduced two times annually, with one important reproductive period from June to September, a minor reproductive period from November to February, and two resting periods as follows: July to August and January to February 2009. © 2016 Taylor & Francis

Cantu-Soto E.U.,Institute Technological of Sonora | Meza-Montenegro M.M.,Institute Technological of Sonora | Valenzuela-Quintanar A.I.,CIAD | Felix-Fuentes A.,Institute Technological of Sonora | And 5 more authors.
Bulletin of Environmental Contamination and Toxicology | Year: 2011

Although, the Yaqui and Mayo valleys are the most important agricultural areas in Sonora, there is only limited data of the pesticides residue in soils in these valleys. This study measured the organochlorine pesticides (OCPs) in 234 soil samples (residential and agricultural) from 24 communities. The global results (mean, range) indicated that benzene hexachloride (19.2, ND-938.5 μg g -1), endrin (6.6, ND-377.3 μg g -1) and DDTs (36.45, ND-679.7 μg g -1) were the dominant contaminants. Soil is one of the most important routes of exposure to OCPs in the population of southern Sonora and this study can be used to establish background levels of OCPs. © 2011 Springer Science+Business Media, LLC.

Discover hidden collaborations