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Development and characterization of whey protein films incorporated with tarbush polyphenols and candelilla wax

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Food Bioscience 2022年第1期45卷 1-7页

作者： Olga B.Alvarez-Perez Janeth M.Ventura-Sobrevilla Cristian Torres-leon Romeo Rojas-Molina raúl rodríguez-herrera Miguel A.Aguilar-Gonzalez Cristobal N.Aguilar Bioprocesses and Bioproducts Research Group Food Research DepartmentSchool of ChemistryUniversidad Autonoma de Coahuila25280SaltilloCoahuilaMexico School of Health Sciences Universidad Autonoma de Coahuila26090Piedras NegrasCoahuilaMexico School of Agronomy Research Center and Development for Food IndustryUniversidad Autonoma de Nuevo Leon6050General EscobedoNuevo LeonMexico Center for Research and Advanced Studies of the National Polytechnique Institute Parque Industrial Saltillo-Ramos ArizpeCoahuilaMexico

Edible films were prepared with whey protein incorporating candelilla wax,and glycerol in aqueous *** polyphenols were added as bioactive *** optimization based on the water vapor permeability(WVP)of the formulation was performed using a Box-Behnken *** films were characterized by the determination of WVP,moisture,solubility,color,antioxidant and antifungal *** electron microscopy(SEM)was also performed to observe the surface and cross-section *** lowest permeability values were found with concentrations of 1.27,0.3 and 0.5% of protein,wax and glycerol *** was proved that the addition of polyphenols into films causes a significant effect only on solubility and transparency *** films have suitable properties as a barrier for the goods they could be applied *** is proposed for use in foods such as fresh or minimally processed fruits and vegetables.

关键词： Edible films Whey protein Shelf life Candelilla wax Euphorbia antisyphilitica Fluorensia cernua polyphenols

Total phenolic content,in vitro antioxidant activity and chemical composition of plant extracts from semiarid Mexican region

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Asian Pacific Journal of Tropical Medicine 2015年第2期8卷 104-111页

作者： Jorge E.Wong-Paz Juan C.Contreras-Esquivel raúl rodríguez-herrera María l.Carrillo-Inungaray lluvia I.lópez Guadalupe V.Nevárez-Moorillón Cristóbal N.Aguilar laboratory of Bioprocesses and Natural Products Food Research DepartmentSchool of ChemistryUniversidad Autónoma de CoahuilaSaltillo25280México laboratory of Biochemistry Multidisciplinary Academic Unit-HuastecaUniversidad Autónoma de San Luis Potosí79060Cd.VallesS.L.P.Mexico Department of Microbiology School of ChemistryUniversidad Autónoma de Chihuahua31125 ChihuahuaMexico

Objective:To determine the extraction suitable conditions of total phenolic content(TPC) by heat-reflux system,antioxidant activities and HPlC characterization of the aqueous-ethanolic extracts of Jatropha dioica(***)(Dragon's blood).Flourensia cernua(***)(Tar bush).Eucalyptus camaldulensis(***)(Eucalyptus) and Turnera diffusa(***)(Damiana).Methods:TPC was evaluated by the well-known colorimetric assay using FolinCiocalteu *** antioxidant activities were assayed by three methods based on scavenging of DPPH,ABTS and by lipid oxidation *** chemical composition of the extracts obtained was subject to HPlC ***:TPC in the plant extracts ranged from 2.3 to14.12 mg gallic acid equivalents/g for *** and ***,*** plant extracts of ***,*** and *** showed similar strong antioxidant activities on scavenging of DPPH and lipid oxidation *** contrast,*** extracts had lowest potential antioxidant in three assays *** assay showed the presence of several phenolic compounds in the extracts ***:The results obtained suggest that ***,*** and *** are potential sources to obtain bioactive phenolic compounds with high antioxidant properties which can be used in the factories as antioxidant agents or for treatments in diseases.

关键词： Plant-extracts Polyphenols Natural antioxidants Mexican plants Heat-reflux system

Isolation and pathogenicity of fungi associated to ambrosia borer (<i>Euplatypus segnis</i>) found injuring pecan (<i>Carya illinoensis</i>) wood

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Agricultural Sciences 2012年第3期3卷 405-416页

作者： ramón Alvidrez-Villarreal Francisco Daniel Hernández-Castillo Oswaldo Garcia-Martínez Rosalinda Mendoza-Villarreal raúl rodríguez-herrera Cristóbal N. Aguilar Department of Agricultural Parasitology Universidad Autónoma Agraria Antonio Narro Saltillo México Department of Basic Sciences Universidad Autónoma Agraria Antonio Narro Saltillo México Department of Food Research School of Chemistry Universidad Autónoma de Coahuila Saltillo México

Euplatypus segnis is an insect pest of economic importance in pecan (Carya illinoensis) trees grown at Parras, General Cepeda and Torreón Coahuila, Mexico. The objectives in this study-were to identify the fungal strains associated to ambrosia borer body and diseased pecan wood and determine their pathogenicity. The results showed that the associated fungi to Euplatypus segnis and damaging the pecan wood were identified as: Helminthosporium sp., Aspergillus sp., Penicillium sp., Phoma sp., Ascochyta sp., Phaecylomices sp., Umbeliopsis sp., Torula sp., Fusarium solani, Alternaria alternata, Fusarum oxysporum, and lasiodiplodia theobromae. The pathogenicity tests on healthy 3 year old pecan trees cv. western using Fusarium oxysporum, Fusarium solani, Alternaria alternata and lasiodiplodia theobromae suspension conidia shown die back tree branches after 84 days inoculation. The insect in combination with the fungal invasion eventually cause the death of trees. Additionally, the insect contributes to the spread of fungi in pecan nut orchards.

关键词： Pathogenicity Pecan Nut Euplatypus segnis Ambrosia Borer Carya illinoensis

Pisco grape pomace:Iron/copper speciation and antioxidant properties,towards their comprehensive utilization

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Food Bioscience 2022年第3期47卷 1213-1221页

作者： Fátima rodríguez-ramos raúl Cañas-Sarazúa Vilbett Briones-labarca Departamento de Ingeniería en Alimentos Universidad de La SerenaAv.Raúl Bitrán Nachary 1305Box 5991720010La SerenaChile

The pisco and wine industry produces hundreds of tons of grape pomace each year in Chile,generating environmental problems,and demanding urgent strategies for its *** aim of this work was to study the pisco grape pomace based on a physicochemical characterization,an iron/copper speciation analysis,and the optimization for polyphenols recovery,establishing the polyphenolic profile,antioxidant properties,and the Fe^(2+)/Cu^(2+) chelating activity,to promote their revalorization as an ingredient with potential application in the food *** chemical characterization showed mainly high values for crude protein(15.36%dw)and potassium(9240.66 mg/kg).The Fe/Cu speciation depicted that iron and copper soluble forms in pisco pomace flour represented 70.57%and 52.18%,respectively,regarding total *** optimized extract showed mainly pyrogallol,catechin and epicatechin,with concentrations of 1078.43±60.14μg/g,883.20±7.57μg/g and,751.76±23.04μg/g,respectively,with a relevant antioxidant capacity by Oxygen radical Absorbance Capacity(OraC)of 1402.15μmol TE/g dw GPE and,a better chelating ability to complex Fe^(2+) than Cu^(2+).The pisco pomace was for the first time chemically characterize,showing it as a potential source of minerals and antioxidant biocompounds,making it a good candidate for nutritional applications,as a rich source of organic matter or even could be potentially utilized to produce value-added commodities,toward a circular economy.

关键词： Pisco grape pomace Polyphenols Chemical speciation analysis Antioxidant capacity Metal chelating ability

Fungal contamination of stored automobile-fuels in a tropical environment

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Journal of Environmental Sciences 2010年第10期22卷 1595-1601页

作者： Carlos E.rodríguez-rodríguez Evelyn rodríguez Rigoberto Blanco Ivannia Cordero Daniel Segura Research Center in Tropical Diseases and laboratory of Research in Anaerobic Bacteriology Faculty of MicrobiologyUniversity of Costa Rica Department of Chemical Engineering School of EngineeringAutonomous University of Barcelona Research Center in Electrochemistry and Chemical Energy University of Costa Rica

Because of the lack of reports, the base levels of microbial contamination on stored fuels are unknown in tropical regions and it is unclear whether these levels have some influence on fuel quality parameters. Therefore, fungal quality in automobile fuels stored across Costa Rican territory was evaluated during two years according to the standard ASTM D6974-04. For a total of 96 samples, counts and identification of molds and yeasts were performed on regular gas, premium gas and diesel taken from the bottom and superior part of the container tanks. The highest contamination was found on the bottom of the tanks, where an aqueous phase was usually identified, showing populations over the ones present in the hydrocarbon itself （up to 108 CFU/l）. Diesel was the most contaminated fuel （up to 107 CFO/l）; however, an alteration on the physicochemical parameters was not observed in any kind of fuel. Seventy-five mold strains were isolated, Penicillium sp. being the most common genus （45.8% of the samples）, and ten yeast strains, from the genera Candida sp. and Rhodotorula sp. Four of the yeasts were able to grow on diesel as the sole carbon source, at concentrations ranging from 0.5% to 25%. Increasing the frequency of tank cleaning, adding antimicrobial agents and monitoring microbial populations are recommended strategies to improve microbial quality of stored fuels.

关键词： fuel microbial contamination biodegradation molds yeasts

The Drying of Pyridine Hydrobromide

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Chinese Journal of Chemical Engineering 1998年第2期6卷 76-80页

作者： RenéD.Peralta rodríguez raúl G.lópez Campos Jaime Wisniak Jacinto G.rodríguez Gómez Silvia Torres Rincón M.Esther Treviño Martínez Centro de Investigacion en Quimica Aplicada Blvd.Ing.Enrique Reyna Hermosillo No.140C.P.25100SaltilloCoahuilaMexico Department of Chemical Engineering Ben-Gurion University of the NegevBeer-ShevaIsrael

1 INTRODUCTIONThe drying of fine chemicals and pharmaceuticals is dominated by a number of special factorscompared to the drying of bulk *** include:very high value of product;lowthroughputs(typically,100 kg·h-1);materials that frequently possess toxic properties andare often sticky,pasty and difficult to handle when wet;the moisture to be evaporated ofteninvolves solvents;and multipurpose processing plants.

关键词： drying pyridine hydrobromide

Origin and evolution of the genera lonsdaleia and Actinocyathus:Insights for the Mississippian palaeogeography from the western Palaeotethys

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Journal of Palaeogeography 2023年第2期12卷 296-310页

作者： Isabel rodríguez-Castro Ian D.Somerville Sergio rodríguez Departamento de Geodinamica Estratigrafía y PaleontologíaUniversidad Complutense de Madrid28040MadridSpain UCD School of Earth Sciences University College DublinBelfieldDublin 4Ireland Instituto de Geociencias(CSIC UCM)Ciudad Universitaria28040MadridSpain

Representatives of the subfamily lonsdaleiinae Chapman,1893 are common in the Mississippian of the western Palaeotethys.A general analysis of the origin,distribution and evolution of that subfamily has been *** most probable hypothesis for the origin of the genus lonsdaleia McCoy,1849 is to acquire colonialism via the genus Axophyllum Milne Edwards and Haime,*** d'Orbigny,1849 would be a descendant of lonsdaleia by increasing integration in the *** first occurrences of lonsdaleia have been recorded in the lower Visean from northern Britain and northern Tianshan Mountains of northwestern China,but the diversification and migration to the whole Palaeotethys only happened in the late *** hypotheses are proposed on that *** Serpukhovian was also a period of migrations and diversification for these *** lonsdaleia and Actinocyathus have been recorded in Bashkirian refuges,the Sverdrup Basin in northern laurasia and the Tindouf Basin in northern Africa,*** division of the western Palaeotethys into six subprovinces based on the distribution of corals is proposed.

关键词： Carboniferous Palaeotethys Biogeography Evolution Rugosa

Complexity of adaptive testing in scenarios defined extensionally

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Frontiers of Computer Science 2023年第3期17卷 11-28页

作者： Ismael rodrÍguez David RUBIO Fernando RUBIO Dpto.Sistemas Informáticos y Computación Facultad de InformáticaUniversidad Complutense de MadridMadrid 28040Spain Instituto de Tecnologías del Conocimiento Universidad Complutense de MadridMadrid 28040Spain Instituto de Biomecánica de Valencia.Universitat Politècnica de València València 46022Spain

In this paper,we consider a testing setting where the set of possible definitions of the Implementation Under Test(IUT),as well as the behavior of each of these definitions in all possible interactions,are extensionally defined,i.e.,on an element-by-element and case-by-case *** this setting,the problem of finding the minimum testing strategy such that collected observations will necessarily let us decide whether the IUT is correct or not(i.e.,whether it necessarily belongs to the set of possible correct definitions or not)is studied in four possible problem variants:with or without non-determinism;and with or without more than one possible definition in the sets of possible correct and incorrect *** computational complexity of these variants is studied,and properties such as PSPACE-completeness and log-APX-hardness are identified.

关键词： formal testing adaptive testing computational complexity PSPACE-completeness approximation hardness

Pathways of Phosphorus Absorption and Early Signaling between the Mycorrhizal Fungi and Plants

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Phyton-International Journal of Experimental Botany 2021年第5期90卷 1321-1338页

作者： Griselda Madrid-Delgado Marcos Orozco-Miranda Mario Cruz-Osorio Ofelia Adriana Hernández-rodríguez raúl rodríguez-Heredia Melchor Roa-Huerta Graciela Dolores Avila-Quezada Facultad de Ciencias Agrotecnológicas Universidad Autónoma de Chihuahua(UACH)Chihuahua31000México Innovak Global Chihuahua31375México

This review highlights the key role that mycorrhizal fungi play in making phosphorus(Pi)more available to plants,including pathways of phosphorus absorption,phosphate transporters and plant-mycorrhizal fungus symbiosis,especially in conditions where the level of inorganic phosphorus(Pi)in the soil is *** fungi colonization involves a series of signaling where the plant root exudates strigolactones,while the mycorrhizal fungi release a mixture of chito-oligosaccharides and liposaccharides,that activate the symbiosis process through gene signaling pathways,and contact between the hyphae and the *** the symbiosis is established,the extraradical mycelium acts as an extension of the roots and increases the absorption of nutrients,particularly phosphorus by the phosphate *** then moves along the hyphae to the plant root/fungus *** transfer of Pi occurs in the apoplectic space;in the case of arbuscular mycorrhizal fungi,Pi is discharged from the arbuscular to the plant’s root symplasm,in the membrane that surrounds the *** is then absorbed through the plant periarbuscular membrane by plant phosphate ***,plants can acquire Pi from soil as a direct absorption *** a result of this review,several genes that codify for high-affinity Pi transporters were *** plants,the main family is Pht1 although it is possible to find others such as Pht2,Pht3,Pho1 and *** in plants,mycorrhizal fungi have genes belonging to the Pht1 *** arbuscular mycorrhizal fungi we found l1PT1,GiPT,MtPT1,MtPT2,MtPT4,HvPT8,ZmPht1,TaPTH1.2,GmosPT and ***1,HcPT2 and BePT have been characterized in ectomycorrhizal *** gene has a different way of expressing *** this review,we present diagrams of the symbiotic relationship between mycorrhizal fungi and the *** knowledge allows us to design solutions to regional problems such as food production in soils with low levels of Pi.

关键词： Interaction,mycorrhiza establishment,symbiosis phosphate uptake