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Synthesis of Silver nanoparticles Using Albumin as a Reducing Agent

Materials Sciences and Applications 2011年第6期2卷 578-581页

作者： J.E morales-Sánchez jesus Guajardo-Pacheco María-Eugenia noriega Quintero Cristina morales elpidio compeán-jasso J González-Hernández Ruiz Facundo 不详

The preparation of stable, uniformed silver nanoparticles by the reduction of silver ions using albumin is reported in the present paper. It is a simple process for obtaining silver nanoparticles. The samples have been characterized by X-ray diffraction (XRD) and transmission electron microscopy (TEM), which reveal the nature of the nanoparticles. These studies conclude that the particles are mostly spherical in shape and have an average size of 26 nm. The UV-vis spectra show that an absorption band, occurred because of the Surface Plasmon Resonance, existing at 443 nm;the Thermogravimetric Analysis (TGA) shows that only 2% of the weight is organic matter. The average particle size was measured with a nanosizer DLS.

关键词： Reducing Agent Albumin Silver nanoparticles

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Integrative Analysis of Transcriptome and Phenolic Compounds Profile Provides Insights into the Quality of Soursop (Annona muricata L.) Fruit

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Phyton-International Journal of Experimental Botany 2024年第7期93卷 1717-1732页

作者： Yolotzin Apatzingán Palomino-Hermosillo Ángel elpidio Díaz-jasso Rosendo Balois-morales Verónica AlhelíOchoa-Jiménez Pedro Ulises Bautista-Rosales Guillermo Berumen-Varela Unidad de Tecnología de Alimentos-Secretaría de Investigación y Posgrado Universidad Autónoma de Nayarit.Ciudad de la Cultura SNTepic63000NayaritMéxico Programa Académico de Biología Unidad Académica de AgriculturaUniversidad Autónoma de NayaritKm.9.Carretera Tepic-CompostelaXalisco63780NayaritMéxico Estancias Posdoctorales-Consejo nacional de Humanidades Ciencias y TecnologíasCoordinación de Apoyos a Becarios e InvestigadoresDirección de PosgradoCiudad de México03940México

Soursop(Annona muricata L.)is a tropical fruit highly valued for its uniqueﬂavor,nutritional value,and health-promoting *** ripening process of soursop involves complex changes in gene expression and metabo-lite accumulation,which have been studied using various omics *** analysis has provided insights into the regulation of key genes involved in ripening,while metabolic compound analysis has revealed the presence of numerous bioactive compounds with potential health beneﬁ***,the integration of transcrip-tome and metabolite compound data has not been extensively explored in ***,in this paper,we present a comprehensive analysis of the transcriptome and phenolic compound proﬁles of soursop during *** integration analysis showed that the genes and phenolic compounds were mainly involved in the starch and sucrose metabolism pathways during soursop ***,the phenolic compounds Kaempferol 3-Q-galactoside,Procyanidin C1,Procyanidin trimmer C1,and m-Coumaric,as well as the genes Ubiquitin-like protein 5(UBL5_ARATH),ATP-dependent zinc metalloprotease FTSH8(FTSH8_ORYSJ),Zinc transporter 4(ZIP4_AR-ATH),Thioredoxin-like 3-1(TRL31_ORYSJ),Mitogen-activated protein kinase YODA(YODA_ARATH),R-man-delonitrile lyase-like(MGL_ARATH),26s protease regulatory subunit 6A homolog(PRS6_SOLLC),Cytochrome P45072A13(C7A13ARATH),Cytochrome P45084A1(C84A1_ARATH)and Homoserine O-trans-acetylase(MET2-ORYSJ)were correlated and differentially accumulated and expressed,*** study provides new insights into the molecular mechanisms underlying soursop ripening and may contribute to the development of strategies for improving the nutritional quality and shelf life of this important fruit.

关键词： Bioinformatics data integration genes metabolites postharvest storage ripening

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Synthesis of Silver nanoparticles Using Albumin as a Reducing Agent

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Materials Sciences and Applications（材料科学与应用期刊） 2011年第6期

作者： J.E morales-Sánchez jesus Guajardo-Pacheco María-Eugenia noriega Quintero Cristina morales elpidio compeán-jasso J González-Hernández Ruiz Facundo

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Aggregation Study of Ag-TiO_(2) Composites

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Materials Sciences and Applications 2011年第12期2卷 1719-1723页

作者： Maria Eugenia noriega-Trevino Claudia Cristina Quintero-Gonzalez Jose elpidio morales-Sanchez Jesus Maria Guajardo-Pacheco Martha Eugenia compean-jasso Facundo Ruiz Science Faculty Universidad Autonoma de San Luis PotosiSan Luis PotosiMexico Mathematics and Physics Department Universidad Autonoma de San Luis PotosiSan Luis PotosiMexico Materials Advanced Research Center ChihuahuaMexico Materials Advanced Research Center ApodacaMexico

Most of the toxicity data presented in the literature are obtained in relatively simple media, like distilled water. The literature reported that nanoparticles agglomerate immediately upon being added to cell culture media and if the agglomerates are used directly in antimicrobial studies, the interpretation of the toxicity results tends to be complicated. Six different molar ratios Ag-TiO2 composites were synthesized by a reduction method using two different commercial TiO2 particles as base materials and were used to find the aggregate size in distilled water and Mueller-Hinton Broth, and to obtain the minimum inhibitory concentrations (MIC) against E. coli and E. faecalis. To evaluate the evolution of the Ag-TiO2 particle size (z-average) three dilutions of each of the synthesized composites 100 μg/ml, 250 μg/mL and 500 μg/ml were realized in deionized water and Mueller Hinton broth. It was found that Ag-TiO2 composites increased in size after being diluted in Mueller-Hinton Broth, but once they grew in size, they remained constant for 24 minutes, and after this time, did not affect the MIC for the microorganisms involved.

关键词： Ag-TiO_(2) Composites nanoparticles Particles Aggregate Size MIC

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Aggregation Study of Ag-TiO2 Composites

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Materials Sciences and Applications（材料科学与应用期刊） 2011年第12期

作者： María Eugenia noriega-Treviño Claudia Cristina Quintero-González1 José elpidio morales-Sánchez Jesús María Guajardo-Pacheco Martha Eugenia compeán-jasso Facundo Ruiz

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