Pub Date : 2021-02-22DOI: 10.29356/JMCS.V65I2.1257
N. Çankaya, S. Yalçın, N. Turan
In this present work, the synthesis, characterization, and thermal properties of poly(2-(4methoxyphenylamino)-2-oxoethyl methacrylate) (MPAEMA) polymer/clay-based nanocomposites were investigated by in-situ polymerization. At the characterizations of nanomaterials FTIR, XRD, SEM, and TGA techniques were used. It was determined from XRD and SEM measurements that the morphology of nanocomposites was exfoliated when the clay content in the polymer matrix was kept at 3% and 5%. From thermal analysis, a positive correlation was observed between the clay ratio and thermal stability of nanomaterials. Also, the cytotoxic effect of halloysite and its nanocomposites was investigated using XTT assay on HeLa cells. According to the results, nanocomposites showed a non-cytotoxic response and thus they may use safety in many research areas such as medicine, agriculture, cosmetics.
{"title":"Preparation of poly(MPAEMA)/halloysite Nanocomposites and Investigation of Antiproliferative Activity","authors":"N. Çankaya, S. Yalçın, N. Turan","doi":"10.29356/JMCS.V65I2.1257","DOIUrl":"https://doi.org/10.29356/JMCS.V65I2.1257","url":null,"abstract":"In this present work, the synthesis, characterization, and thermal properties of poly(2-(4methoxyphenylamino)-2-oxoethyl methacrylate) (MPAEMA) polymer/clay-based nanocomposites were investigated by in-situ polymerization. At the characterizations of nanomaterials FTIR, XRD, SEM, and TGA techniques were used. It was determined from XRD and SEM measurements that the morphology of nanocomposites was exfoliated when the clay content in the polymer matrix was kept at 3% and 5%. From thermal analysis, a positive correlation was observed between the clay ratio and thermal stability of nanomaterials. Also, the cytotoxic effect of halloysite and its nanocomposites was investigated using XTT assay on HeLa cells. According to the results, nanocomposites showed a non-cytotoxic response and thus they may use safety in many research areas such as medicine, agriculture, cosmetics.","PeriodicalId":21347,"journal":{"name":"Revista de la Sociedad Química de Mexico","volume":"44 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-02-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81314315","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-02-22DOI: 10.29356/JMCS.V65I2.1424
Nafees Ahmed, M. Rahman
Bioadsorbents are drawing the attention of the environmental scientists in removing organic pollutants from aqueous solution because of their availability and low cost. In this research, adsorptive removal of 2,4-dichlorophenol (2,4-DCP) onto used black tea leaves (UBTLs) as well as on sodium chlorite modified used black tea leaves (SCM-UBTLs) was investigated at different conditions. The value of pH was optimized at 2. Smaller particle size (50-100 m) of both the adsorbents showed maximum removal of 2,4-DCP. However, SCM-UBTLs exhibited comparatively higher (54%) removal of DCP than unmodified used black tea leaves (UM-UBTLs) (40%) at similar conditions (pH, particle size and dose). Equilibrium attained within three hours for both the adsorbents of smaller particle size at pH 2. Adsorption follows the Ho’s pseudo-second-order kinetics rather than Lagergren pseudo-firstorder for both the adsorbents. The experimental data was justified with the FTIR spectra of adsorbed and unadsorbed surfaces.
{"title":"Adsorptive Removal of 2,4-Dichlorophenol from Aqueous Solution by Using Used Black Tea Leaves","authors":"Nafees Ahmed, M. Rahman","doi":"10.29356/JMCS.V65I2.1424","DOIUrl":"https://doi.org/10.29356/JMCS.V65I2.1424","url":null,"abstract":"Bioadsorbents are drawing the attention of the environmental scientists in removing organic pollutants from aqueous solution because of their availability and low cost. In this research, adsorptive removal of 2,4-dichlorophenol (2,4-DCP) onto used black tea leaves (UBTLs) as well as on sodium chlorite modified used black tea leaves (SCM-UBTLs) was investigated at different conditions. The value of pH was optimized at 2. Smaller particle size (50-100 m) of both the adsorbents showed maximum removal of 2,4-DCP. However, SCM-UBTLs exhibited comparatively higher (54%) removal of DCP than unmodified used black tea leaves (UM-UBTLs) (40%) at similar conditions (pH, particle size and dose). Equilibrium attained within three hours for both the adsorbents of smaller particle size at pH 2. Adsorption follows the Ho’s pseudo-second-order kinetics rather than Lagergren pseudo-firstorder for both the adsorbents. The experimental data was justified with the FTIR spectra of adsorbed and unadsorbed surfaces.","PeriodicalId":21347,"journal":{"name":"Revista de la Sociedad Química de Mexico","volume":"17 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-02-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79642357","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-02-22DOI: 10.29356/JMCS.V65I2.1457
D. González-Calderón, Ricardo García-Monroy, Alejandra Ramírez-Villalva, Salvador Mastachi-Loza, J. G. A. Paz, A. Fuentes-Benítes, Carlos González-Romero
A library of novel benzylic 1,2,3-triazole-4-carboxamides (3a-m) were obtained with acceptable yields via a one-pot procedure. The series of compounds was screened for fungicidal activity and evaluated in vitro against four filamentous fungi and four Candida species. The former consisted of Aspergillus fumigatus, Trichosporon cutaneum, Rhizopus oryzae and Mucor hiemalis, and the latter C. krusei, C. albicans, C. utilis and C. glabrata. According to the in vitro assays, 3d and 3e were the most efficient fungicidal agents (of all the test compounds) against R. oryzae, even better than the reference drug (itraconazole). Thus, 3d and 3e represent important scaffolds that can be modified to increase antifungal activity. Additionally, they are candidates for complementary studies on the inhibition of clinical infections produced by Rhizopus spp. strains.
{"title":"Synthesis of Novel Benzylic 1,2,3-triazole-4-carboxamides and their in vitro Activity Against Clinically Common Fungal Species","authors":"D. González-Calderón, Ricardo García-Monroy, Alejandra Ramírez-Villalva, Salvador Mastachi-Loza, J. G. A. Paz, A. Fuentes-Benítes, Carlos González-Romero","doi":"10.29356/JMCS.V65I2.1457","DOIUrl":"https://doi.org/10.29356/JMCS.V65I2.1457","url":null,"abstract":"A library of novel benzylic 1,2,3-triazole-4-carboxamides (3a-m) were obtained with acceptable yields via a one-pot procedure. The series of compounds was screened for fungicidal activity and evaluated in vitro against four filamentous fungi and four Candida species. The former consisted of Aspergillus fumigatus, Trichosporon cutaneum, Rhizopus oryzae and Mucor hiemalis, and the latter C. krusei, C. albicans, C. utilis and C. glabrata. According to the in vitro assays, 3d and 3e were the most efficient fungicidal agents (of all the test compounds) against R. oryzae, even better than the reference drug (itraconazole). Thus, 3d and 3e represent important scaffolds that can be modified to increase antifungal activity. Additionally, they are candidates for complementary studies on the inhibition of clinical infections produced by Rhizopus spp. strains.","PeriodicalId":21347,"journal":{"name":"Revista de la Sociedad Química de Mexico","volume":"64 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-02-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82063514","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-02-22DOI: 10.29356/JMCS.V65I2.1265
M. Zaboon, A. Saleh, H. Al-Lami
The presence of reactive primary amines in the backbone structure of chitosan enables the derivatization with different functional groups and thereby improving and expanding its properties, such as solubility and mucoadhesiveness, for biomedical applications. In this work, chitosan was grafted with different sources of amino acids (Histidine, Aspartic acid, Glutamic acid, Glycine-Aspartic acid, and Glycine-Glutamic acid), Chitosan and its grafted amino acid derivatives were obtained in very good yield, and they were characterized by Fourier-Transform Infrared Spectroscopy (FTIR), and the resulted spectra confirmed the right structures of chitosan and its different synthesized derivatives. The chitosan and its amino acid derivatives were converted to nanoparticles in size by subjecting them to the sonication method. The Scanning Electron Microscope (SEM) was used to determine the shape and size of the prepared polymeric nanoparticles and the average nanoparticle size counted by the Image-J program. The micrographs revealed that the nanoparticles with spherical shapes and with different sizes were gained, but in general, they are less than 100nm in diameters. In vitro cytotoxicity of chitosan and chitosan derivatives prepared NPs were determined as MTT assay, against different three types of human breast cancer cell lines which are BT cell lines, MCF-7 cell lines, and SKBR3 cell lines. The cell proliferation of each type of breast cancer cell line has appeared to a highly significant decrease (p<0.001), with all types of tested NPs polymers in comparison with the positive control samples, through different periods of the experiment (24, 48, and 72 hours).
{"title":"Synthesis, Characterization and Cytotoxicity Investigation of Chitosan-Amino Acid Derivatives Nanoparticles in Human Breast Cancer Cell Lines","authors":"M. Zaboon, A. Saleh, H. Al-Lami","doi":"10.29356/JMCS.V65I2.1265","DOIUrl":"https://doi.org/10.29356/JMCS.V65I2.1265","url":null,"abstract":"The presence of reactive primary amines in the backbone structure of chitosan enables the derivatization with different functional groups and thereby improving and expanding its properties, such as solubility and mucoadhesiveness, for biomedical applications. In this work, chitosan was grafted with different sources of amino acids (Histidine, Aspartic acid, Glutamic acid, Glycine-Aspartic acid, and Glycine-Glutamic acid), Chitosan and its grafted amino acid derivatives were obtained in very good yield, and they were characterized by Fourier-Transform Infrared Spectroscopy (FTIR), and the resulted spectra confirmed the right structures of chitosan and its different synthesized derivatives. The chitosan and its amino acid derivatives were converted to nanoparticles in size by subjecting them to the sonication method. The Scanning Electron Microscope (SEM) was used to determine the shape and size of the prepared polymeric nanoparticles and the average nanoparticle size counted by the Image-J program. The micrographs revealed that the nanoparticles with spherical shapes and with different sizes were gained, but in general, they are less than 100nm in diameters. In vitro cytotoxicity of chitosan and chitosan derivatives prepared NPs were determined as MTT assay, against different three types of human breast cancer cell lines which are BT cell lines, MCF-7 cell lines, and SKBR3 cell lines. The cell proliferation of each type of breast cancer cell line has appeared to a highly significant decrease (p<0.001), with all types of tested NPs polymers in comparison with the positive control samples, through different periods of the experiment (24, 48, and 72 hours).","PeriodicalId":21347,"journal":{"name":"Revista de la Sociedad Química de Mexico","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-02-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91332774","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-02-22DOI: 10.29356/JMCS.V65I2.1240
S. Kamila, N. GaneshDurgachalam
Different metal ions as well as carbohydrates play vital role in human metabolism. The present investigation emphasizes on zinc sulphate (ZnSO4) in galactose and its comparative study with lactose in aqueous medium at 303.15, 308.15, 313.15K temperature and at 1.0 atmospheric pressure. Different physical quantities such as density, viscosity and speed of sound have been measured as function of concentrations and temperatures for these multi-component solutions. These quantities were further used to evaluate various thermo-acoustic parameters like acoustic impedance, isentropic compressibility, partial molal compressibility, partial molal volume, internal pressure etc,. The results were analyzed to assess the type and extent of association among the components. Moreover, both Zn and SO4 are in the Hofmeister series and there is a possibility of ion-macro molecule interactions in aqueous solution. The breaking of the structure and the solvation of the solute by changing the temperature in mixed solvents are the point of discussion in the present study. Interestingly, the ion-solvation of zinc ion is comparatively more favorable in galactose than in lactosewater mixed solvent systems.
{"title":"Studies on Apparent Molal Compressibility and Molal Volume of ZnSO4 in Aqueous Saccharides Mixed Solvent Systems: A Comparative Study","authors":"S. Kamila, N. GaneshDurgachalam","doi":"10.29356/JMCS.V65I2.1240","DOIUrl":"https://doi.org/10.29356/JMCS.V65I2.1240","url":null,"abstract":"Different metal ions as well as carbohydrates play vital role in human metabolism. The present investigation emphasizes on zinc sulphate (ZnSO4) in galactose and its comparative study with lactose in aqueous medium at 303.15, 308.15, 313.15K temperature and at 1.0 atmospheric pressure. Different physical quantities such as density, viscosity and speed of sound have been measured as function of concentrations and temperatures for these multi-component solutions. These quantities were further used to evaluate various thermo-acoustic parameters like acoustic impedance, isentropic compressibility, partial molal compressibility, partial molal volume, internal pressure etc,. The results were analyzed to assess the type and extent of association among the components. Moreover, both Zn and SO4 are in the Hofmeister series and there is a possibility of ion-macro molecule interactions in aqueous solution. The breaking of the structure and the solvation of the solute by changing the temperature in mixed solvents are the point of discussion in the present study. Interestingly, the ion-solvation of zinc ion is comparatively more favorable in galactose than in lactosewater mixed solvent systems.","PeriodicalId":21347,"journal":{"name":"Revista de la Sociedad Química de Mexico","volume":"158 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-02-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82919291","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-02-22DOI: 10.29356/JMCS.V65I2.1458
H. Bollikolla, V. S. N. R. Pericherla, Jagan Mohana Rao Saketi, V. B. Neduri, C. Kurmarayuni, V. S. Gottumukkala
A series of 10 new hispolonpyrazole sulfonamides were designed and synthesized using hispolons and 4-sulfonamide phenylhydrazine hydrochloride with better yields. The synthesized pyrazole sulfonamides were screened for anti-TB, anti-bacterial, and anti-fungal activities to compare the role sulfonamide moiety. Among them, 3a and 3b showed selective potent anti-tubercular nature (MIC 6.25μg/mL). Further, the antimicrobial studies of the compounds showed only compound 3b with a good inhibition zone on Staphylococcus aureus among other bacteria and fungi studied.
{"title":"Synthesis of New Hispolon Derived Pyrazole Sulfonamides for Possible Antitubercular and Antimicrobial Agents","authors":"H. Bollikolla, V. S. N. R. Pericherla, Jagan Mohana Rao Saketi, V. B. Neduri, C. Kurmarayuni, V. S. Gottumukkala","doi":"10.29356/JMCS.V65I2.1458","DOIUrl":"https://doi.org/10.29356/JMCS.V65I2.1458","url":null,"abstract":"A series of 10 new hispolonpyrazole sulfonamides were designed and synthesized using hispolons and 4-sulfonamide phenylhydrazine hydrochloride with better yields. The synthesized pyrazole sulfonamides were screened for anti-TB, anti-bacterial, and anti-fungal activities to compare the role sulfonamide moiety. Among them, 3a and 3b showed selective potent anti-tubercular nature (MIC 6.25μg/mL). Further, the antimicrobial studies of the compounds showed only compound 3b with a good inhibition zone on Staphylococcus aureus among other bacteria and fungi studied.","PeriodicalId":21347,"journal":{"name":"Revista de la Sociedad Química de Mexico","volume":"24 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-02-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89384174","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-02-22DOI: 10.29356/JMCS.V65I2.1445
E. Guzmán, L. R. Reyes-Gutiérrez, Liliana Romero Guzmán, Hector Mendoza, Lucía Clara Uría Gómez, Joel Gutiérrez Reyes
Particulate matter (PM) is recognized as a type of pollutant emitted through the air that generates adverse health effects. Bioaerosols are PM of biological origin, that has not been morphologically characterized as exhaustively as other types of PM. The term bioaerosols collectively refers to all dead or living airborne particles with biological origins, including pollen, fungi, bacteria, viruses, plant or animal debris, as well as fragments and products of pathogenic microorganisms. Pathogenic airborne microorganisms may have public health consequences. Bioaerosols suspended in ambient air from the Metropolitan Zone of Toluca Valley (MZTV), State of Mexico were identified by scanning electron microscopy followed by energy dispersive xray spectroscopy, to determine their morphology, elemental chemical composition, and average sizes. The bioaerosols detected were pollen, spores, microorganisms, fragments, and diatoms that exhibited diverse morphological structures; while some particles had rough or smooth surfaces, others were spongy and spherical or had irregular or thorny surfaces. Others, yet, had well-structured surfaces such as the amoeba that were detected in the study. EDS analyses carried out on SEM samples demonstrated that C and O were the main chemical elements of them. The main components of diatoms were the silicon and oxygen. The particle radii (r) of detected pollen was 2 μm ≤ r ≤ 23 μm, spores were 0.17 μm ≤ r ≤ 3.7 μm, microorganisms were 0.16 μm ≤ r ≤ 12 μm, and diatoms were 2.3 μm ≤ r ≤ 23 μm. Bioaerosols aerodynamic sizes range can be potentially poses adverse health effects.
{"title":"An Overview of Bioaerosols Suspended in the Atmosphere of Metropolitan Zone of Toluca Valley","authors":"E. Guzmán, L. R. Reyes-Gutiérrez, Liliana Romero Guzmán, Hector Mendoza, Lucía Clara Uría Gómez, Joel Gutiérrez Reyes","doi":"10.29356/JMCS.V65I2.1445","DOIUrl":"https://doi.org/10.29356/JMCS.V65I2.1445","url":null,"abstract":"Particulate matter (PM) is recognized as a type of pollutant emitted through the air that generates adverse health effects. Bioaerosols are PM of biological origin, that has not been morphologically characterized as exhaustively as other types of PM. The term bioaerosols collectively refers to all dead or living airborne particles with biological origins, including pollen, fungi, bacteria, viruses, plant or animal debris, as well as fragments and products of pathogenic microorganisms. Pathogenic airborne microorganisms may have public health consequences. Bioaerosols suspended in ambient air from the Metropolitan Zone of Toluca Valley (MZTV), State of Mexico were identified by scanning electron microscopy followed by energy dispersive xray spectroscopy, to determine their morphology, elemental chemical composition, and average sizes. The bioaerosols detected were pollen, spores, microorganisms, fragments, and diatoms that exhibited diverse morphological structures; while some particles had rough or smooth surfaces, others were spongy and spherical or had irregular or thorny surfaces. Others, yet, had well-structured surfaces such as the amoeba that were detected in the study. EDS analyses carried out on SEM samples demonstrated that C and O were the main chemical elements of them. The main components of diatoms were the silicon and oxygen. The particle radii (r) of detected pollen was 2 μm ≤ r ≤ 23 μm, spores were 0.17 μm ≤ r ≤ 3.7 μm, microorganisms were 0.16 μm ≤ r ≤ 12 μm, and diatoms were 2.3 μm ≤ r ≤ 23 μm. Bioaerosols aerodynamic sizes range can be potentially poses adverse health effects.","PeriodicalId":21347,"journal":{"name":"Revista de la Sociedad Química de Mexico","volume":"61 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-02-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89007863","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-02-22DOI: 10.29356/JMCS.V65I2.1356
Z. Mussa, F. Al-Qaim, A. Yuzir, K. Shameli
Abstract. In this present study, the investigation of the photocatalytic removal of malachite green and brilliant blue dyes from their aqueous solution using photocatalytic oxidation process was provided. The application of factorial experimental design for the analysis the results was the main objective in the present study. The photocatalytic removal of Malachite Green (MG) and Brilliant Blue (BB) dyes was carried out in aqueous solutions containing the dye and suspended of ZnO upon UV irradiation (high pressure mercury lamp Radium 125 W). The effect of different factors such as initial dye concentration, sample volume and treatment time was taken in account. All samples of MG and BB have been analysed at 617 and 620 nm, respectively. The linearity ranged between 5 and 50 mg/L for MG dye while it was ranged between 20 and 200 mg/L for BB dye. The linear regression, R2, was more than 0.995 for both dyes. The results revealed that factorial experimental design analysis has given a better indication to investigate the effects of factors. It was observed that the most of factors are significant for both dyes. Initial concentration and treatment time factors were the most significant factors for MG and BB dyes, respectively according to pareto chart. Resumen. En este estudio se presenta una investigacion sobre la remocion fotocatalitica de colorantes de verde de malaquita y azul brillante de soluciones acuosas mediante procesos de oxidacion fotocatalitica. El objetivo principal de este trabajo fue la aplicacion de un diseno experimental factorial para el analisis de los resultados. La remocion del verde de malaquita (MG) y azul brillante (BB) de soluciones acuosas se llevo a cabo mediante irradiacion de luz UV en presencia de particulas de ZnO en suspension. Para los experimentos, se uso una lampara de mercurio a alta presion (Radium 125 W). Se consideraron los efectos de distintas variables, como la concentracion inicial de cada colorante, el volumen de la muestra y el tiempo de tratamiento. Todas las muestras de MG y BB se analizaron a 617 y 620 nm, respectivamente. Se observo linealidad en los resultados en el intervalo de concentraciones entre 5 y 50 mg/L para el caso de MG, mientras que para el BB la linealidad se observo en el intervalo de concentraciones entre 20 y 200 mg/L. En ambos casos, los datos se ajustaron a modelos lineales con valores de R2 mayores a 0.995. Los resultados revelaron que el diseno experimental factorial permite investigar de mejor manera los efectos de diversos factores, encontrandose que la concentracion inicial y el tiempo de tratamiento son los factores mas importantes para la remocion de MG y BB, respectivamente, segun se muestra en los graficos de Pareto.
摘要本文研究了光催化氧化法对孔雀石绿和艳蓝染料的脱除效果。应用析因试验设计对结果进行分析是本研究的主要目的。采用高压水银灯辐照(125w)，在含有氧化锌悬浮液和染料的水溶液中进行光催化脱除孔雀石绿(MG)和亮蓝(BB)染料，考察了初始染料浓度、样品体积和处理时间等因素对脱除效果的影响。MG和BB的所有样品分别在617和620 nm处进行了分析。mg染料的线性范围为5 ~ 50mg /L, BB染料的线性范围为20 ~ 200mg /L。两种染料的线性回归R2均大于0.995。结果表明，析因实验设计分析为研究各因素的影响提供了较好的指示。结果表明，大多数因素对两种染料均有显著影响。从帕累托图上看，MG和BB染料的初始浓度和处理时间分别是最显著的影响因素。Resumen。本文介绍了一种新型的脱色光催化、脱色光催化、脱色光催化、脱色光催化、脱色光催化、脱色光催化、脱色光催化、脱色光催化、脱色光催化、脱色光催化、脱色光催化、脱色光催化、脱色光催化。目的:对试验结果进行分析，并对试验结果进行分析。在氧化锌悬浮液存在的情况下，用蓝色荧光剂(BB)代替蓝色荧光剂(MG)对紫外光的中间照射进行了研究。Para los实验，使用uso una lampara de mercurio和alta precision(镭125 W)。我们考虑了不同变量的损失效应，包括浓度、初始颜色浓度、细胞体积和处理时间。今天，我们分别用617 nm和620 nm对MG和BB进行了分析。Se observo linealidad在洛杉矶resultados en el intervalo de concentraciones之间5 y 50 mg / L对位埃尔卡索de mg mientras, para el BB la linealidad Se observo en el intervalo de concentraciones之间20 y 200 mg / L。在两种情况下，所有的数据都是根据线性模型进行调整的。研究结果揭示了不同因素的主要影响因素、不同时间的主要影响因素、不同时间的主要影响因素、不同时间的主要影响因素、不同时间的主要影响因素、不同时间的主要影响因素、不同时间的主要影响因素、不同时间的主要影响因素、不同时间的主要影响因素、不同时间的主要影响因素、不同时间的主要影响因素、不同时间的主要影响因素、不同时间的主要影响因素、不同时间的主要影响因素、不同时间的主要影响因素、不同时间的主要影响因素、不同时间的主要影响因素和不同时间的主要影响因素。
{"title":"Photocatalytic Removal of Malachite Green and Brilliant Blue Dyes from its Aqueous Solution: A Case Study of Factorial Experimental Design","authors":"Z. Mussa, F. Al-Qaim, A. Yuzir, K. Shameli","doi":"10.29356/JMCS.V65I2.1356","DOIUrl":"https://doi.org/10.29356/JMCS.V65I2.1356","url":null,"abstract":"Abstract. In this present study, the investigation of the photocatalytic removal of malachite green and brilliant blue dyes from their aqueous solution using photocatalytic oxidation process was provided. The application of factorial experimental design for the analysis the results was the main objective in the present study. The photocatalytic removal of Malachite Green (MG) and Brilliant Blue (BB) dyes was carried out in aqueous solutions containing the dye and suspended of ZnO upon UV irradiation (high pressure mercury lamp Radium 125 W). The effect of different factors such as initial dye concentration, sample volume and treatment time was taken in account. All samples of MG and BB have been analysed at 617 and 620 nm, respectively. The linearity ranged between 5 and 50 mg/L for MG dye while it was ranged between 20 and 200 mg/L for BB dye. The linear regression, R2, was more than 0.995 for both dyes. The results revealed that factorial experimental design analysis has given a better indication to investigate the effects of factors. It was observed that the most of factors are significant for both dyes. Initial concentration and treatment time factors were the most significant factors for MG and BB dyes, respectively according to pareto chart. \u0000 \u0000Resumen. En este estudio se presenta una investigacion sobre la remocion fotocatalitica de colorantes de verde de malaquita y azul brillante de soluciones acuosas mediante procesos de oxidacion fotocatalitica. El objetivo principal de este trabajo fue la aplicacion de un diseno experimental factorial para el analisis de los resultados. La remocion del verde de malaquita (MG) y azul brillante (BB) de soluciones acuosas se llevo a cabo mediante irradiacion de luz UV en presencia de particulas de ZnO en suspension. Para los experimentos, se uso una lampara de mercurio a alta presion (Radium 125 W). Se consideraron los efectos de distintas variables, como la concentracion inicial de cada colorante, el volumen de la muestra y el tiempo de tratamiento. Todas las muestras de MG y BB se analizaron a 617 y 620 nm, respectivamente. Se observo linealidad en los resultados en el intervalo de concentraciones entre 5 y 50 mg/L para el caso de MG, mientras que para el BB la linealidad se observo en el intervalo de concentraciones entre 20 y 200 mg/L. En ambos casos, los datos se ajustaron a modelos lineales con valores de R2 mayores a 0.995. Los resultados revelaron que el diseno experimental factorial permite investigar de mejor manera los efectos de diversos factores, encontrandose que la concentracion inicial y el tiempo de tratamiento son los factores mas importantes para la remocion de MG y BB, respectivamente, segun se muestra en los graficos de Pareto.","PeriodicalId":21347,"journal":{"name":"Revista de la Sociedad Química de Mexico","volume":"41 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-02-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75806177","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-02-22DOI: 10.29356/JMCS.V65I2.1454
A. O. Feitosa, Maricelia Lopes dos Anjos, G. D. C. Ramos, J. E. Siqueira, C. M. Oliveira, S. Silva, S. Silva, P. Marinho, H. Bitencourt, A. M. Marinho
Biotransformations are chemical reactions carried out by microorganisms on organic substrates. Biotransformations can be regio-, chemo-, stereoand enantio-selective. Bioreductions are of great interest to the food and pharmaceutical industries as they help to reduce costs and impacts on the environment. In this work, the following biotransformations of chalcones were performed: (2E)-1-(4-hydroxy-phenyl)-3-(2methoxy-phenyl)-prop-2-en-1-one (1), (2E)-1-(4-hydroxy-phenyl)-3-(4-methoxy-phenyl)-prop-2-en-1-one (2), and (2E)-1-(4-hydroxy-phenyl)-3-phenyl-prop-2-en-1-one (3) by the fungus Scedosporium aspiospermum, leading to formation through chemo-selective reduction of dihydrochalcones 1-(4-hydroxy-phenyl)-3-(2methoxy-phenyl)-propan-1-one (4), 1-(4-hydroxy-phenyl)-3-(4-methoxy-phenyl)-propan-1-one (5), and 1-(4hydroxy-phenyl)-3-phenyl-propan-1-one (6). Compounds 1-6 had their antimicrobial activities tested and were observed better activity to the biotransformation products compared with substrates. This is the first report of chemo-selective bioreduction by fungi of the genus Scedosporium in biotransformation reactions.
{"title":"Bioreduction of the Chalcones by Fungus Scedosporium apiospermum EJCP13","authors":"A. O. Feitosa, Maricelia Lopes dos Anjos, G. D. C. Ramos, J. E. Siqueira, C. M. Oliveira, S. Silva, S. Silva, P. Marinho, H. Bitencourt, A. M. Marinho","doi":"10.29356/JMCS.V65I2.1454","DOIUrl":"https://doi.org/10.29356/JMCS.V65I2.1454","url":null,"abstract":"Biotransformations are chemical reactions carried out by microorganisms on organic substrates. Biotransformations can be regio-, chemo-, stereoand enantio-selective. Bioreductions are of great interest to the food and pharmaceutical industries as they help to reduce costs and impacts on the environment. In this work, the following biotransformations of chalcones were performed: (2E)-1-(4-hydroxy-phenyl)-3-(2methoxy-phenyl)-prop-2-en-1-one (1), (2E)-1-(4-hydroxy-phenyl)-3-(4-methoxy-phenyl)-prop-2-en-1-one (2), and (2E)-1-(4-hydroxy-phenyl)-3-phenyl-prop-2-en-1-one (3) by the fungus Scedosporium aspiospermum, leading to formation through chemo-selective reduction of dihydrochalcones 1-(4-hydroxy-phenyl)-3-(2methoxy-phenyl)-propan-1-one (4), 1-(4-hydroxy-phenyl)-3-(4-methoxy-phenyl)-propan-1-one (5), and 1-(4hydroxy-phenyl)-3-phenyl-propan-1-one (6). Compounds 1-6 had their antimicrobial activities tested and were observed better activity to the biotransformation products compared with substrates. This is the first report of chemo-selective bioreduction by fungi of the genus Scedosporium in biotransformation reactions.","PeriodicalId":21347,"journal":{"name":"Revista de la Sociedad Química de Mexico","volume":"SE-11 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-02-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84639835","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-02-22DOI: 10.29356/JMCS.V65I2.1270
Cristina Santiago Ruiz, Viviana Noemi Nuricumbo Lievano, Mariana Gabriela Chapa Barrios, G. Gutiérrez, Arturo Velázquez
Abstract. Antioxidants and phenolic compounds are involved in antioxidative processes, decreasing the activity of free radicals. Cuajilote (Parmentiera aculeata) is a crop of the state of Chiapas, Mexico, mainly used as feed for cattle, unknown the compounds that the fruit may contain, but many researches indicate that this fruit has been used for therapeutic purposes. Therefore, the purpose of the present study is the evaluation of the antioxidant, antibacterial and polyphenol content of pulp and seed of cuajilote. The recollected fruit were classified by degree of ripeness (green (G), mature green ripe (MG) and ripe (R)). The samples were dry at 40 °C. Aqueous, ethanol and methanolic extracts were obtained from degree of ripeness mentioned above. Higher antioxidant activity was obtained from ethanolic extracts of ripe pulp, greater polyphenol content from methanolic extracts from ripe pulp and antibacterial activity in ethanolic extracts from cuajilote pulp. The pulp has a higher antioxidant activity and polyphenol concentration in the ripe stage. Resumen. Los antioxidantes y compuestos fenolicos intervienen en los procesos antioxidantes, disminuyendo la actividad de los radicales libres. El Cuajilote (Parmentiera aculeata) es un cultivo del estado de Chiapas, Mexico, utilizado principalmente como alimento para el ganado, desconociendo los compuestos que el fruto puede contener, pero muchas investigaciones indican que el fruto se ha utilizado para fines terapeuticos. Por lo tanto, el proposito del presente estudio es la evaluacion del contenido antioxidante, antibacteriano y de polifenoles de la pulpa y la semilla de cuajilote. Los frutos recogidos se clasificaron por grado de maduracion (verde (G), maduro-verde-maduro (MG) y maduro (R)). Las muestras se secaron a 40 °C, los extractos acuosos, etanolico y metanolico contuvieron los compuestos de interes. Se obtuvo actividad antioxidante mayor en los extractos etanolicos de pulpa madura; un mayor contenido de polifenoles a partir de extractos metanolicos de pulpa madura y elevada actividad antibacteriana en extractos etanolicos de la pulpa de cuajilote. La pulpa presenta superior actividad antioxidante y concentracion de polifenoles en la etapa madura.
摘要抗氧化剂和酚类化合物参与抗氧化过程，降低自由基的活性。Cuajilote (Parmentiera aculeata)是墨西哥恰帕斯州的一种作物，主要用作牛的饲料，未知水果可能含有的化合物，但许多研究表明这种水果已被用于治疗目的。因此，本研究的目的是评价花椒果肉和种子的抗氧化、抗菌和多酚含量。收集的果实按成熟程度(绿(G)、成熟青熟(MG)和成熟(R))进行分类。样品在40°C下干燥。从上述成熟度得到水提物、乙醇提物和甲醇提物。熟浆乙醇提取物具有较高的抗氧化活性，熟浆甲醇提取物具有较高的多酚含量，熟浆乙醇提取物具有较高的抗菌活性。果肉在成熟阶段具有较高的抗氧化活性和多酚浓度。Resumen。抗氧化剂的作用机制是:对抗氧化剂的作用机制是:对抗氧化剂的作用机制。墨西哥恰帕斯州农业研究所，墨西哥恰帕斯州农业研究所，墨西哥恰帕斯州农业研究所，墨西哥恰帕斯州农业研究所，墨西哥恰帕斯州农业研究所，墨西哥恰帕斯州农业研究所，墨西哥恰帕斯州农业研究所，墨西哥恰帕斯州农业研究所，墨西哥恰帕斯州农业研究所，墨西哥恰帕斯州农业研究所。Por lo tanto等人提出了一种新的研究方法，用于评价其抗氧化性、抗菌性和多酚性。Los frutos recoddos se classificaron por grado de maduracion (verde (G)， maduro-verde-maduro (MG) y maduro (R))。在40°C的高温下，低温下的空气中含有大量的萃取物、代谢物和代谢物。黄芩提取物中抗氧化活性成分的研究本文研究了一种具有抗细菌活性和抗细菌活性的新方法，并对该方法进行了验证。猕猴桃果肉中多酚类化合物的抗氧化活性较高。
{"title":"Antimicrobial Activity, Phenolic and Antioxidant Content of Extracts from Cuajilote (Parmentiera aculeata Kunth) Fruits at Different Degrees of Ripening","authors":"Cristina Santiago Ruiz, Viviana Noemi Nuricumbo Lievano, Mariana Gabriela Chapa Barrios, G. Gutiérrez, Arturo Velázquez","doi":"10.29356/JMCS.V65I2.1270","DOIUrl":"https://doi.org/10.29356/JMCS.V65I2.1270","url":null,"abstract":"Abstract. Antioxidants and phenolic compounds are involved in antioxidative processes, decreasing the activity of free radicals. Cuajilote (Parmentiera aculeata) is a crop of the state of Chiapas, Mexico, mainly used as feed for cattle, unknown the compounds that the fruit may contain, but many researches indicate that this fruit has been used for therapeutic purposes. Therefore, the purpose of the present study is the evaluation of the antioxidant, antibacterial and polyphenol content of pulp and seed of cuajilote. The recollected fruit were classified by degree of ripeness (green (G), mature green ripe (MG) and ripe (R)). The samples were dry at 40 °C. Aqueous, ethanol and methanolic extracts were obtained from degree of ripeness mentioned above. Higher antioxidant activity was obtained from ethanolic extracts of ripe pulp, greater polyphenol content from methanolic extracts from ripe pulp and antibacterial activity in ethanolic extracts from cuajilote pulp. The pulp has a higher antioxidant activity and polyphenol concentration in the ripe stage. \u0000Resumen. Los antioxidantes y compuestos fenolicos intervienen en los procesos antioxidantes, disminuyendo la actividad de los radicales libres. El Cuajilote (Parmentiera aculeata) es un cultivo del estado de Chiapas, Mexico, utilizado principalmente como alimento para el ganado, desconociendo los compuestos que el fruto puede contener, pero muchas investigaciones indican que el fruto se ha utilizado para fines terapeuticos. Por lo tanto, el proposito del presente estudio es la evaluacion del contenido antioxidante, antibacteriano y de polifenoles de la pulpa y la semilla de cuajilote. Los frutos recogidos se clasificaron por grado de maduracion (verde (G), maduro-verde-maduro (MG) y maduro (R)). Las muestras se secaron a 40 °C, los extractos acuosos, etanolico y metanolico contuvieron los compuestos de interes. Se obtuvo actividad antioxidante mayor en los extractos etanolicos de pulpa madura; un mayor contenido de polifenoles a partir de extractos metanolicos de pulpa madura y elevada actividad antibacteriana en extractos etanolicos de la pulpa de cuajilote. La pulpa presenta superior actividad antioxidante y concentracion de polifenoles en la etapa madura.","PeriodicalId":21347,"journal":{"name":"Revista de la Sociedad Química de Mexico","volume":"108 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-02-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82843874","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
京公网安备 11010802042870号
京ICP备2023020795号-1
扫码关注我们
求助内容：
应助结果提醒方式：