Technological Institute of Sonora

Sonora, Mexico

Technological Institute of Sonora

Sonora, Mexico
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Xavier L.,Technological Institute of Sonora | Xavier L.,University of the Republic of Uruguay | Xavier L.,University of Santiago de Compostela | Deive F.J.,University of Vigo | And 7 more authors.
ACS Sustainable Chemistry and Engineering | Year: 2017

The extraction of phenolic acids from wheat straw (WS) using more environmentally friendly and competitive means is targeted in the present work. The ability of Tween 20 (polyoxyethylene (20) sorbitan monolaurate) as a phenolics extractant in aqueous solutions of a biocompatible ionic liquid (choline dihydrogencitrate) obtained after biomass hydrolysis has been demonstrated. To accomplish the extraction as required, the existence of biphasic areas in model aqueous ternary systems from 20 to 60 °C was ensured as a prior step to evaluate the extraction yields and partition coefficients of ferulic and p-coumaric acids at different Tween 20 concentrations. It was observed that the surfactant content turned out to be a key parameter to attain high extraction levels of phenolic acids (up to 97% of total phenols, 89% of ferulic acid, and 93% of p-coumaric acid at the greatest surfactant concentration). Furthermore, at this surfactant concentration, the total phenols content (TPY) after extraction was 4.51 mg of gallic acid equivalent (GAE)/g of WS dry basis (d.b.), antioxidant activity TEAC (Trolox equivalent antioxidant capacity) was 4.26 μmol equivalents of Trolox (TRE)/g WS d.b., and antioxidant activity for DPPH (2,2-diphenyl-1-picrylhydrazyl) was 0.458 μmol TRE/g WS d.b. The proposed extraction method did not entail bioactivity impairment, as reflected the analysis of free radical scavenging capacity and trolox equivalents antioxidant capacity. © 2017 American Chemical Society.


Coronado-Aceves E.W.,University of Sonora | Coronado-Aceves E.W.,Technological Institute of Sonora | Gigliarelli G.,University of Perugia | Garibay-Escobar A.,University of Sonora | And 7 more authors.
Journal of Ethnopharmacology | Year: 2017

Ethnopharmacology relevance The evaluation of the antimycobacterial activity of extracts of medicinal plants used by Mayos against tuberculosis and respiratory problems, allowed the identification of Rhynchosia precatoria (Humb. & Bonpl. ex Willd.) DC (Fabaceae) as the best candidate to find new antimycobacterial compounds. Aim of the study To isolate and characterize the compounds of R. precatoria responsible for the inhibitory and bactericidal activity against Mycobacterium tuberculosis H37Rv and Mycobacterium smegmatis ATCC 700084. To determine antimycobacterial synergistic effect of pure compounds and their selectivity index towards Vero cells. Materials and methods A total of six flavonoids were purified by silica gel column chromatography. Structural elucidation of the isolated compounds was achieved by using 1D and 2D NMR spectroscopy techniques. The configuration at the C-3 chiral center was established by quantum mechanical calculation of the electronic circular dichroism (ECD) spectrum. In vitro inhibitory and bactericidal activity against M. tuberculosis and M. smegmatis were determined with the redox indicator Alamar Blue (resazurin). Synergy was determined by X/Y quotient. Cytotoxicity was measured by MTT assay. Results The isolated compounds were identified as precatorin A (1), precatorin B (2), precatorin C (3), lupinifolin (4), cajanone (5) and lupinifolinol (6). Compounds 1–3 are new. Compounds 1 to 5 inhibited the growth of M. tuberculosis (MIC ≥31.25 µg/mL); compounds 1, 2, 4 and 5 killed the bacteria (MBC ≥31.25 µg/mL) and also inhibited M. smegmatis (MIC ≥125 µg/mL), while 1 and 4 also resulted bactericidal (MBC ≥125 µg/mL). Compounds 4 and 5 presented synergistic effect (X/Y quotient value <0.5) at a concentration of 1/2 MIC of each compound in the combination. Cytotoxicity in murine macrophages (RAW 264.7 cells) gave IC50 values of 13.3–46.98 µM, for compounds 1–5. Conclusions In this work we isolated two new isoflavanones (1 and 2), and one new isoflavone (3) with a weak antimycobacterial activity. The (3R) absolute configuration was assigned to 1 by computational analysis of its ECD spectrum and to 2 and 5 by similarity of their ECD spectra with that of 1. We are also reporting by first time, activity against virulent strain of M. tuberculosis for compounds 4 and 5 and their antimycobacterial synergistic effect. © 2017 Elsevier Ireland Ltd


Sanches-Silva A.,Instituto Nacional Of Saude Doctor Ricardo Jorge Insa | Costa H.S.,Instituto Nacional Of Saude Doctor Ricardo Jorge Insa | Losada P.P.,University of Santiago de Compostela | Sendon R.,University of Santiago de Compostela | And 4 more authors.
Nutrition Bulletin | Year: 2010

The project 'Preparation of active packaging with antioxidant and antimicrobial activity based on astaxanthin and chitosan' (PAPAAABAC, in Spanish PEACAABAQ) brings together a multi-disciplinary team from Mexico, Spain and Portugal, with expertise in different areas of food and polymer sciences. The working programme includes optimisation of the extraction and characterisation of astaxanthin and chitosan from shrimp waste, and incorporation of these compounds into plastic (polymeric matrices), in order to obtain new packaging with antioxidant and antimicrobial properties (active packaging) and finally control-release studies which are carried out in order to determine the quantity of active compounds that should be included in the packaging. This is a 2-year project which started in 2009 and is funded by FONCYCIT (Fund for International Cooperation of Science and Technology EU-Mexico; Fondo de Cooperación Internacional de Ciencia y Tecnologia Unión Europea-Mexico) under the coordination of Professor Jaime López Cervantes from the Technological Institute of Sonora (ITSON). © 2010 The Authors. Journal compilation © 2010 British Nutrition Foundation.


Lares-Orozco M.F.,Technological Institute of Sonora | Robles-Morua A.,Technological Institute of Sonora | Yepez E.A.,Technological Institute of Sonora | Handler R.M.,Michigan Technological University
Journal of Cleaner Production | Year: 2016

A reduction in greenhouse gas (GHG) emissions from productive activities can contribute to climate change mitigation by diminishing the future impacts on natural and socioeconomic systems. Nitrous oxide is one of the most important GHGs and agriculture represents its main anthropogenic source. Using a standardized life cycle assessment (LCA) methodology, this study aims to identify and quantify the GHG emissions associated with the different stages of wheat production using local information to develop localized climate change mitigation strategies in one of the most intensive agricultural areas in the world. A set of mitigation scenarios created based on inputs and information obtained directly from producer's associations and farmers were evaluated. These scenarios range from the traditional approaches to the more innovative strategies currently being applied. They are considered to maintain the same yields considering changes mainly in fertilization, tillage and machinery efficiency. We found that the main source of GHGs in wheat production in the Yaqui Valley is fertilizing, with an average of 83% of the life cycle emissions in all the production scenarios proposed. The second contributing activity is tillage, accounting for 13% of Global Warming Potential (GWP) in conventional systems and 1% with 'no tillage' strategies. Results show that the manufacture of fertilizers accounted for 42% of the fertilizing emissions and 35% of the total life cycle emissions of wheat. In addition, by using more efficient tractors that decreased diesel inputs, emissions from conventional tillage can be reduced by 33% and emissions from no tillage can be reduced by 24%. The application of the LCA methodology allowed providing a more detailed quantification of the GHG and environmental impacts of different wheat production processes. Compared to other studies, the mitigation strategies developed from this work have a better chance of being adopted by producers because there were developed based on the actual practices proposed by the farmers and consider existing approaches currently being promoted by producer's associations for cost reduction purposes. In this sense, the results of this LCA suggest that implementation of innovation strategies in fertilizing, tillage, and machinery efficiency can both reduce costs and mitigate GHG emissions in intensive wheat production systems all over the world. © 2016 Elsevier Ltd.


Ruelas-Inzunza J.,Technological Institute of Mazatlán | Sanchez-Osuna K.,Technological Institute of Mazatlán | Amezcua-Martinez F.,National Autonomous University of Mexico | Spanopoulos-Zarco P.,Technological Institute of Sonora | Manzano-Luna L.,National Autonomous University of Mexico
Marine Pollution Bulletin | Year: 2012

Baseline Hg concentration in bycatch fish from the SE Gulf of California were determined in muscle and liver of 19 species. Levels of Hg in muscle were compared with legal limits of this element in national and international legislation. Considering all fish species, mean concentrations in liver (2.458±1.997μgg-1) were significantly higher (p<0.05) than in muscle (0.993±0.670μgg-1). The sequence of averaged Hg concentrations in most ichthyofauna was liver>muscle. Highest level of Hg in muscle (2.556μgg-1) and liver (7.515μgg-1) corresponded to Diapterus peruvianus and Ophioscion strabo, respectively. Considering muscle samples, none of the species had levels of Hg above the limit (1.0μgg-1 wet weight) in the Mexican legislation; with respect to the Japanese (0.4μgg-1 wet weight) and British (0.3μgg-1 wet weight) legislations, 26.3% and 31.6% of the species respectively, were above the corresponding limits. © 2012 Elsevier Ltd.


Sanchez-Machado D.I.,Technological Institute of Sonora | Lopez-Cervantes J.,Technological Institute of Sonora | Rodriguez-Nunez J.R.,Technological Institute of Sonora
International Journal of Pharma and Bio Sciences | Year: 2015

The antimicrobial effect of the polyamide 6/66-chitosan blend obtained by extrusion and chitosan-coated plastic films was compared with pure chitosan films and chitosan solution against Escherichia coli, Listeria monocytogenes and Bacillus cereus. The films from polyamide 6/66-chitosan blend had no antibacterial activity, and the chitosan plastic film coating (bilayer system) showed only contact inhibition, without increase of contact area. The pure chitosan films did not show inhibition halos, however, contact inhibition was observed. During the assays, this films absorbed moisture, increasing the diameter of the discs at least 30%, causing contact inhibition on the area in all microorganisms tested. The best inhibition effect was observed with chitosan solution, reaching the total inhibition for Listeria monocytogenes and a log reduction of 3.6 and 2.3 for Escherichia coli and Bacillus cereus, respectively. Chitosan has an antimicrobial effect, although this property was reduced by the incorporation of a plastic matrix.


Spanopoulos-Zarco P.,Technological Institute of Sonora | Ruelas-Inzunza J.,Technological Institute of Mazatlán | Jara-Marini M.E.,Research Center En Alimentacion sarrollo Ac | Meza-Montenegro M.,Technological Institute of Sonora
Environmental Monitoring and Assessment | Year: 2015

With the aim of determining arsenic (As) and selenium (Se) concentrations in bycatch fishes from SW Mexico and comparing elemental concentrations with limits for human consumption set in the national and international legislation, three fish species (Diapterus peruvianus, Pseudupeneus grandisquamis, and Trachinotus kennedyi) were collected from Guerrero state during trawling operations. Additionally, As and Se levels in muscle tissue were compared with similar species from diverse areas. The order of As and Se concentrations was T. kennedyi > P. grandisquamis > D. peruvianus. In Mexico, there is no regulation of As and Se levels in fish. In comparison to the legal limit (0.1 μg g−1 wet weight) set by legislation in Venezuela, As levels in the edible portion of T. kennedyi (0.632 μg g−1 wet weight), P. grandisquamis (0.166 μg g−1 wet weight), and D. peruvianus (0.157 μg g−1 wet weight) were above this limit. In the case of Se, average concentrations in T. kennedyi (0.323 μg g−1 wet weight) were above the maximum permissible limit (0.30 μg g−1 wet weight) set in the Chilean legislation. Se concentrations in Carangoides bajad from Saudi Arabia were comparable to values in T. kennedyi (this study). In relation to As, concentrations varied in magnitude orders; the highest As concentration (range 10.35 to 23.71 μg g−1 wet weight) corresponded to Mullus barbatus from the Iberian Mediterranean. © 2015, Springer International Publishing Switzerland.


Spanopoulos-Zarco P.,Technological Institute of Sonora | Ruelas-Inzunza J.,Technological Institute of Mazatlán | Aramburo-Moran I.S.,Technological Institute of Mazatlán | Bojorquez-Leyva H.,National Autonomous University of Mexico | Paez-Osuna F.,National Autonomous University of Mexico
Biological Trace Element Research | Year: 2016

In order to ascertain if Cu, Fe, and Zn are differentially accumulated in fish tissues, metal concentrations were measured in the muscle and liver of bycatch fish from the states of Sinaloa (189 specimens, 7 species) and Guerrero (152 individuals, 8 species) in the Mexican Pacific Coast during March and November 2011. Additionally, metal levels were compared with the maximum allowable limits set by international legislation and contrasted with similar ichthyofauna from other regions. Liver had more elevated concentrations of Cu (Sinaloa 28.3, Guerrero 16.3 μg g−1), Fe (Sinaloa 1098, Guerrero 636 μg g−1), and Zn (Sinaloa 226, Guerrero 186 μg g−1) than the muscle in fish from both studied areas. The relative abundances of analyzed metals in both tissues was Fe > Zn > Cu. As far as limits set by international legislation (Australia, India, New Zealand, Zambia), measured concentrations of Cu in the edible portion of fish were not found to be above the set values. In the case of Zn, the maximum allowable limits set by international legislation were exceeded by the Peruvian mojarra Diapterus peruvianus from Guerrero state (Mexican Pacific). No limits exist for Fe in the edible portion of fishery products in the national and international legislations. © 2016 Springer Science+Business Media New York


PubMed | National Autonomous University of Mexico, Technological Institute of Sonora, Technological Institute of Mazatlán and Autonomous University of Sinaloa
Type: | Journal: Journal of environmental science and health. Part A, Toxic/hazardous substances & environmental engineering | Year: 2017

The White and Striped mullets (Mugil curema and M. cephalus) are highly abundant and commercially important estuarine fish in northwest (NW) Mexico. Because of their feeding habits and habitat, they are likely to accumulate mercury (Hg) in their muscle and liver. The objectives of this study were to determine total Hg distribution in the tissues of interest, to correlate Hg levels between tissues and with length and weight of fish, to estimate the percentage weekly intake (PWI) of total Hg and methyl Hg (MeHg) through consumption of both mullet species, and to compare total Hg levels with mullets from other areas. The highest total Hg concentration (1.031g g


PubMed | Technological Institute of Sonora, Technological Institute of Mazatlán and Research Center En Alimentacion sarrollo Ac
Type: Journal Article | Journal: Environmental monitoring and assessment | Year: 2015

With the aim of determining arsenic (As) and selenium (Se) concentrations in bycatch fishes from SW Mexico and comparing elemental concentrations with limits for human consumption set in the national and international legislation, three fish species (Diapterus peruvianus, Pseudupeneus grandisquamis, and Trachinotus kennedyi) were collected from Guerrero state during trawling operations. Additionally, As and Se levels in muscle tissue were compared with similar species from diverse areas. The order of As and Se concentrations was T. kennedyi>P. grandisquamis>D. peruvianus. In Mexico, there is no regulation of As and Se levels in fish. In comparison to the legal limit (0.1 g g(-1) wet weight) set by legislation in Venezuela, As levels in the edible portion of T. kennedyi (0.632 g g(-1) wet weight), P. grandisquamis (0.166 g g(-1) wet weight), and D. peruvianus (0.157 g g(-1) wet weight) were above this limit. In the case of Se, average concentrations in T. kennedyi (0.323 g g(-1) wet weight) were above the maximum permissible limit (0.30 g g(-1) wet weight) set in the Chilean legislation. Se concentrations in Carangoides bajad from Saudi Arabia were comparable to values in T. kennedyi (this study). In relation to As, concentrations varied in magnitude orders; the highest As concentration (range 10.35 to 23.71 g g(-1) wet weight) corresponded to Mullus barbatus from the Iberian Mediterranean.

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