Revista Colombiana de Quimica最新文献

Extracción y análisis de metabolitos fenólicos apoplásticos en raíz y tallo de clavel (Dianthus caryophyllus L) 香石竹根和茎中无融合生殖酚类代谢物的提取与分析

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Revista Colombiana de Quimica Pub Date : 2022-09-06 DOI: 10.15446/rev.colomb.quim.v51n1.99258

Ana Patricia Martínez González, Ericsson Coy-Barrera, Harold Duban Ardila Barrantes

{"title":"Extracción y análisis de metabolitos fenólicos apoplásticos en raíz y tallo de clavel (Dianthus caryophyllus L)","authors":"Ana Patricia Martínez González, Ericsson Coy-Barrera, Harold Duban Ardila Barrantes","doi":"10.15446/rev.colomb.quim.v51n1.99258","DOIUrl":"https://doi.org/10.15446/rev.colomb.quim.v51n1.99258","url":null,"abstract":"En el presente estudio se describe el acondicionamiento de algunos parámetros con fines de obtención eficiente de extractos apoplásticos enriquecidos en compuestos polares, principalmente fenólicos. Este flujo de trabajo descrito, incluso, puede ser aplicado a diferentes especies vegetales para ser empleado en el análisis particular o global de metabolitos en este espacio extracelular periférico. Para ello, usando raíces y tallos de clavel (Dianthus cariophyllus L), se evaluaron diferentes soluciones de infiltración para la extracción de los metabolitos apoplásticos. El mejor resultado se logró con la disolución amortiguadora NaH2PO4-Na2HPO4 0,1 M pH 6,5/NaCl 50 mM, porque se obtiene la mayor cantidad de metabolitos fenólicos apoplásticos, con la menor contaminación de compuestos intracelulares. Los metabolitos se separaron mediante HPLC-DAD-ESI-MS, obteniendo perfiles cromatográficos con parámetros de calidad razonables basados en resolución, selectividad y número de platos teóricos. Con estas condiciones, fue posible identificar ocho compuestos diferenciales (una flavona y siete flavonoles), cuyas estructuras básicas comprendían flavonoides del tipo (iso)pratol, kaempférido, (dihidro)kaempferol, quercetina y miricetina, según el órgano de prueba y la variedad. Los flavonoides identificados están relacionados con metabolitos de tipo fitoanticipina en el clavel, como hidroxi-metoxiflavona, di-o-benzoilquercetina y kaempférido disaliciloilrhamnósido, abundantemente presentes en la variedad resistente. Las condiciones descritas en este trabajo son fundamentales para profundizar en el papel de los metabolitos fenólicos apoplásticos relacionados con los mecanismos de defensa de esta planta ornamental.\u0000 ","PeriodicalId":43662,"journal":{"name":"Revista Colombiana de Quimica","volume":null,"pages":null},"PeriodicalIF":0.8,"publicationDate":"2022-09-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48964017","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}

引用次数: 0

Syntheses and magnetic properties of substituted bis-indacenyl bi-metallic complexes & application 取代双茚二烯基双金属配合物的合成、磁性及应用

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Revista Colombiana de Quimica Pub Date : 2022-09-06 DOI: 10.15446/rev.colomb.quim.v51n1.101889

Amshumali K. Mungalimane, K.M. Sateesha, K. Mussuvir Pasha, Yuvaraja Dibdalli, Mallikarjun V. Patil, V. Siruguri, R. Reddy

{"title":"Syntheses and magnetic properties of substituted bis-indacenyl bi-metallic complexes & application","authors":"Amshumali K. Mungalimane, K.M. Sateesha, K. Mussuvir Pasha, Yuvaraja Dibdalli, Mallikarjun V. Patil, V. Siruguri, R. Reddy","doi":"10.15446/rev.colomb.quim.v51n1.101889","DOIUrl":"https://doi.org/10.15446/rev.colomb.quim.v51n1.101889","url":null,"abstract":"Organometallic compounds, Bis (2,4,6,8 teramethyl-indacenyl) di Iron (1), Bis (2,4,6,8 teramethyl s-indacenyl) mono iron, mono cobalt (2), and Bis (2,6 diethyl-4,8-dimethyl-s-indacenyl) di cobalt (3) were synthesised by means of salt elimination strategy, using Fe(II) and Co(II) salts. The compounds were characterised through spectroscopic and electrochemical methods. Magnetic measurements were carried out by Physical Property Measurement System (PPMS). Mossbauer spectroscopic data reveals that in all compounds, surprisingly, Iron is in +3 oxidation state. DFT calculations have been carried out to understand the change in the oxidation state of a metal. DFT study confirms the electron transfer nature of ligand to metal. Cyclic voltametric study on these compounds shows a large separation (ΔE>800mV) between two oxidation peaks confirming the strong interaction between the metal centres. Magnetic measurements on these organometallic compounds reveals that they exhibit a ferrimagnetic behaviour at temperatures below 40 K.","PeriodicalId":43662,"journal":{"name":"Revista Colombiana de Quimica","volume":null,"pages":null},"PeriodicalIF":0.8,"publicationDate":"2022-09-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48939856","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}

引用次数: 2

The state of the art of marine natural products in Colombia 哥伦比亚最先进的海洋天然产品

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Revista Colombiana de Quimica Pub Date : 2022-09-06 DOI: 10.15446/rev.colomb.quim.v51n1.100644

Claudia Andrea Bautista, C. Puentes, C. M. Vargas-Peláez, Marison Santos-Acevedo, Freddy A Ramos, J. Gómez-León, Leonardo Castellanos Hernández

{"title":"The state of the art of marine natural products in Colombia","authors":"Claudia Andrea Bautista, C. Puentes, C. M. Vargas-Peláez, Marison Santos-Acevedo, Freddy A Ramos, J. Gómez-León, Leonardo Castellanos Hernández","doi":"10.15446/rev.colomb.quim.v51n1.100644","DOIUrl":"https://doi.org/10.15446/rev.colomb.quim.v51n1.100644","url":null,"abstract":"Marine Natural Products (MNPs) isolated from samples collected in Colombia have been an object of study since the early 1980's; however, this information is neither integrated nor compiled. This systematic review describes the articles published in scientific journals up to December 2019. 173 papers met the inclusion criteria of focusing on MNPs obtained from specimens collected from Colombian seas; all original papers written in English, Portuguese or Spanish. The selected papers were mostly authored by researchers from Colombian groups, with low interaction amongst themselves. 99.4% of the papers studied samples collected from the Caribbean Sea; 183 species were studied, mainly sponges and octocorals. In this study, 1,690 compounds (238 new ones) were reviewed, mainly diterpenes and sterol derivatives. Of the selected papers, 76.8% measured various biological activities, including antibiotic (34%) and anticancer (30%). These papers were published in 51 journals (74.6% were international). In conclusion, scientific work on natural marine products of Colombian origin has incremented over time. The most relevant opportunities to address and fill existing gaps comprise: exploring Pacific Ocean organisms and several of the misrepresented taxa; promoting strong interactions amongst the MNPs research groups, and accordingly with other areas of knowledge; and having the productive sector participate in MNPs research.","PeriodicalId":43662,"journal":{"name":"Revista Colombiana de Quimica","volume":null,"pages":null},"PeriodicalIF":0.8,"publicationDate":"2022-09-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49050635","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}

引用次数: 0

Estudio teórico de la oxidación de CO con O2 usando catalizadores de Au-Pd y Au-Pt

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Revista Colombiana de Quimica Pub Date : 2022-09-06 DOI: 10.15446/rev.colomb.quim.v51n1.101015

Andrés Felipe Forero Garzón, Sergio Joya Rodríguez, Kevin Nicolás Sebastián Cachón Osorio, Andrés Fernando Bernal Escobar, Badhin Gómez, Julián E. Sánchez-Velandia, Sol Milena Mejía Chica

{"title":"Estudio teórico de la oxidación de CO con O2 usando catalizadores de Au-Pd y Au-Pt","authors":"Andrés Felipe Forero Garzón, Sergio Joya Rodríguez, Kevin Nicolás Sebastián Cachón Osorio, Andrés Fernando Bernal Escobar, Badhin Gómez, Julián E. Sánchez-Velandia, Sol Milena Mejía Chica","doi":"10.15446/rev.colomb.quim.v51n1.101015","DOIUrl":"https://doi.org/10.15446/rev.colomb.quim.v51n1.101015","url":null,"abstract":"En el presente estudio se realizaron cálculos con base en la Teoría del Funcional de la Densidad Electrónica (DFT) con la aproximación B3PW91/LANL2DZ para optimizar los sistemas monometálicos y bimetálicos Au9, Au8Pd, Au8Pt, AuPd8, AuPt8, Pd9 y Pt9. Los materiales fueron teóricamente evaluados como catalizadores para la oxidación de monóxido de carbono (CO) y se determinó el sistema más favorable para la adsorción de esta molécula. La sustitución de átomos de Pt y Pd por átomos de Au en los nonámeros generó un cambio en la estructura tridimensional del sistema. El análisis de reactividad global mostró que el clúster más reactivo es 𝑃𝑡9, seguido por 𝐴𝑢𝑃𝑡8. Los índices de Fukui identificaron los sitios más susceptibles para un ataque nucleofílico de ambos clústeres. La adsorción de CO generó una cascada de oxidación que liberó ~4,5 eV, indicando que la reacción es altamente exotérmica y exergónica. Los clústeres 𝐴𝑢𝑃𝑡8 y 𝑃𝑡9 mostraron los valores más bajos de energía de activación de la etapa determinante del mecanismo. En general, la sustitución de un átomo de platino (o paladio) por un átomo de oro no afecta la reactividad de los nonámeros y, por tanto, se infiere que el clúster 𝐴𝑢𝑃𝑡8 podría ser un catalizador promisorio en la oxidación de CO.","PeriodicalId":43662,"journal":{"name":"Revista Colombiana de Quimica","volume":null,"pages":null},"PeriodicalIF":0.8,"publicationDate":"2022-09-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43526752","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}

引用次数: 0

Modelamiento in silico de la liasa organomercurial (MerB) de Pseudomonas fluorescens 荧光假单胞菌有机汞裂解酶(MerB)的硅模拟

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Revista Colombiana de Quimica Pub Date : 2022-09-06 DOI: 10.15446/rev.colomb.quim.v51n1.98381

Kerynd Barona Duque, Duverney Gaviria

{"title":"Modelamiento in silico de la liasa organomercurial (MerB) de Pseudomonas fluorescens","authors":"Kerynd Barona Duque, Duverney Gaviria","doi":"10.15446/rev.colomb.quim.v51n1.98381","DOIUrl":"https://doi.org/10.15446/rev.colomb.quim.v51n1.98381","url":null,"abstract":"El modelamiento in silico ha sido de gran contribución en los procesos proteómicos, desarrollando estructuras de las secuencias proteicas ya existentes, que por motivos de altos costos y las diferentes tecnologías necesarias para el desarrollo de estas metodologías, se encuentran deficientes en el número de modelamientos de proteínas disponibles. Entre aquellas secuencias con carencia de estructura proteica se encuentra la proteína liasa organomercurial (MerB) de Pseudomonas fluorescens, importante en la resistencia al mercurio. En el presente artículo se analizó tanto estructural como funcionalmente la proteína MerB en Pseudomonas fluorescens, utilizando la herramienta de la química estructural “modelamiento por homología” mediante plataformas bioinformáticas, con el fin de obtener un modelo que represente la estructura 3D más precisa y que capturen las mejores variantes estructurales entre todas las posibles conformaciones de las proteínas en la familia. En este trabajo, se desarrolló un método comparativo de la secuencia estudiada con las reportadas en las bases de datos para las proteínas MerB del género Pseudomonas. Se propone un modelo tridimensional para la enzima (MerB) en P. fluorescens, mediante el modelamiento por homología, se muestra la caracterización en la estructura secundaria, terciaria, la caracterización del dominio catalítico y los motivos estructurales presentes.","PeriodicalId":43662,"journal":{"name":"Revista Colombiana de Quimica","volume":null,"pages":null},"PeriodicalIF":0.8,"publicationDate":"2022-09-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46168644","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}

引用次数: 0

Evaluación del desempeño de una celda de combustible microbiana con electrodo de grafito modificado para el tratamiento de agua residual del procesamiento del café 用改性石墨电极处理咖啡加工废水的微生物燃料电池的性能评价

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Revista Colombiana de Quimica Pub Date : 2022-09-06 DOI: 10.15446/rev.colomb.quim.v51n1.101185

Paola Fuentes Schweizer, Dyanne Cárdenas, Lidieth Uribe Lorío, Jean Sanabria Chinchilla, José Ricardo Cabrejo Villegas, Carlos Solís Chacón

{"title":"Evaluación del desempeño de una celda de combustible microbiana con electrodo de grafito modificado para el tratamiento de agua residual del procesamiento del café","authors":"Paola Fuentes Schweizer, Dyanne Cárdenas, Lidieth Uribe Lorío, Jean Sanabria Chinchilla, José Ricardo Cabrejo Villegas, Carlos Solís Chacón","doi":"10.15446/rev.colomb.quim.v51n1.101185","DOIUrl":"https://doi.org/10.15446/rev.colomb.quim.v51n1.101185","url":null,"abstract":"La actividad cafetalera en Costa Rica procesa aproximadamente 69.000 toneladas de café mediante la técnica de beneficiado húmedo. Esta actividad conlleva un alto impacto ambiental debido a la generación de 8 L de agua residual/kg de café oro producido. El presente trabajo tiene como objetivo utilizar el agua residual del procesamiento de café como sustrato en celdas combustibles microbianas (CCM), con el propósito de generar energía eléctrica a través de su uso y, a la vez, disminuir la carga orgánica del residuo. La CCM empleó un cátodo modificado con ftalocianinas de hierro (FePc), generó una eficiencia coulómbica de 0,7% y una densidad de potencia de 89 μW/cm2 en un ciclo de operación de cinco días. Además, se determinó que la CCM disminuye la demanda química de oxígeno (DQO) del residuo hasta en 27% bajo las condiciones de operación nativas del sustrato, a temperatura ambiente, sin mediadores químicos para la reacción anódica y con el uso de electrodos de platino para el cátodo. El estudio confirma la oportunidad de emplear el sustrato con una flora microbiana nativa apta para la operación de la tecnología de la CCM, y así perfilar el dispositivo como una opción novedosa para el tratamiento de este residuo en Costa Rica.","PeriodicalId":43662,"journal":{"name":"Revista Colombiana de Quimica","volume":null,"pages":null},"PeriodicalIF":0.8,"publicationDate":"2022-09-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47485465","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}

引用次数: 0

Pyrazinamide–isoniazid hybrid: synthesis optimisation, characterisation, and antituberculous activity 吡嗪酰胺-异烟肼杂合物:合成优化、表征和抗结核活性

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Revista Colombiana de Quimica Pub Date : 2022-06-29 DOI: 10.15446/rev.colomb.quim.v50n3.96424

A.C. Valderrama – Negrón, Rocio I. Ramirez Panti, Christian M. Aliaga Paucar, Fernando Grandez Arias, Patricia Sheen Cortovaria, Mirko Juan Zimic Peralta, Yudith Cauna Orocollo

引用次数: 0

Functional and chemical qualities of Vitis labrusca grape seed oil extracted by supercritical CO2 超临界CO2法提取葡萄籽油的功能及化学性质研究

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Revista Colombiana de Quimica Pub Date : 2022-06-29 DOI: 10.15446/rev.colomb.quim.v50n3.95469

Maritza Elizabeth Barriga Sanchez, Carlos Francisco Castro Rumiche, Gloria Cesia Sanchez Gonzales, Maria Rosales-Hartshorn3

{"title":"Functional and chemical qualities of Vitis labrusca grape seed oil extracted by supercritical CO2","authors":"Maritza Elizabeth Barriga Sanchez, Carlos Francisco Castro Rumiche, Gloria Cesia Sanchez Gonzales, Maria Rosales-Hartshorn3","doi":"10.15446/rev.colomb.quim.v50n3.95469","DOIUrl":"https://doi.org/10.15446/rev.colomb.quim.v50n3.95469","url":null,"abstract":"Grape seed oil, which is extracted with highly toxic organic solvents that are harmful to human health, is produced from tons of grape pomace waste, generated during winemaking. Sometimes, this waste is used to make compost or is burnt, which causes environmental contamination. The functional qualities, antioxidant capacity (AC), α-tocopherol and total phenolic compounds content (TPC) of Black Borgoña (Vitis labrusca) grape seed oil, extracted by supercritical CO2, were evaluated. The high content of linoleic acid (w-6) and monounsaturated fatty acids contributed to the beneficial effect on the functional quality indices, which were 0.20, 0.23, 11.80 for IA, IT and H:H, respectively. In addition, a POV of 6.23 ± 0.08 milliequivalents of peroxide/kg oil and an anisidine index of 2.70 ± 0.05 indicated a good quality oil. Also, a high concentration of α-tocopherol (9.82 ± 0.02 mg/100 g oil) and a high TPC (114.14 ± 3.24 mg GAE/kg oil) were obtained. This study demonstrated that supercritical CO2 extraction is a suitable method for the delivery of a high-quality grape seed oil.\u0000 ","PeriodicalId":43662,"journal":{"name":"Revista Colombiana de Quimica","volume":null,"pages":null},"PeriodicalIF":0.8,"publicationDate":"2022-06-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67057119","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}

引用次数: 3

Biological homochirality and stoichiometric network analysis: Variations on Frank’s model 生物手性和化学计量网络分析：弗兰克模型的变化

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Revista Colombiana de Quimica Pub Date : 2022-06-29 DOI: 10.15446/rev.colomb.quim.v50n3.96921

J. A. Ágreda Bastidas, Juan Andrés Montoya Arguello, Carolina Mejía

{"title":"Biological homochirality and stoichiometric network analysis: Variations on Frank’s model","authors":"J. A. Ágreda Bastidas, Juan Andrés Montoya Arguello, Carolina Mejía","doi":"10.15446/rev.colomb.quim.v50n3.96921","DOIUrl":"https://doi.org/10.15446/rev.colomb.quim.v50n3.96921","url":null,"abstract":"Biological homochirality is modelled using chemical reaction mechanisms that include autocatalytic and inhibition reactions as well as input and output flows. From the mathematical point of view, the differential equations associated with those mechanisms have to exhibit bistability. The search for those bifurcations can be carried out using stoichiometric network analysis. This algorithm simplifies the mathematical analysis and can be implemented in a computer programme, which can help us to analyse chemical networks. However, regardless of the reduction to linear polynomials, which is made possible by this algorithm, in some cases, the complexity and length of the polynomials involved make the analysis unfeasible. This problem has been partially solved by extending the stoichiometric matrix with rows that code the duality relations between the different reactions occurring in the network given as input. All these facts allow us to analyse 28 different network models, highlighting the basic requirements needed by a chemical mechanism to have spontaneous mirror symmetry breaking.","PeriodicalId":43662,"journal":{"name":"Revista Colombiana de Quimica","volume":null,"pages":null},"PeriodicalIF":0.8,"publicationDate":"2022-06-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42822721","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}

引用次数: 1

Evaluation of emeralds by their origin: Multivariate analysis - Infrared spectra 祖母绿来源评价：多元分析-红外光谱

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Revista Colombiana de Quimica Pub Date : 2022-06-29 DOI: 10.15446/rev.colomb.quim.v50n3.98674

Elianna Castillo Serna, J. A. Ágreda Bastidas, Valentina Gonzalez Ruiz, Javier García Toloza

引用次数: 0