Journal of the Mexican Chemical Society最新文献

{"title":"Carbon Paste Electrodes Obtained from Organic Waste After a Biodrying Process and Validation in an Electro-Fenton System Towards Alternative Valorization","authors":"A.Z. Vela-Carrillo, Luis A. Godínez, J. D. García-Espinoza, R.J. Martínez, M.O. Franco-Hernández, A.B. Piña-Guzman, M.C. Santos, F. Robles-Martínez, I. Robles","doi":"10.29356/jmcs.v67i4.1962","DOIUrl":"https://doi.org/10.29356/jmcs.v67i4.1962","url":null,"abstract":"Abstract. The transformation of agricultural waste into activated carbon represents an attractive approach as new and alternative source, but also as a reduction of pollution associated to the degradation of precursors. The organic residues sugarcane (Saccharum officinarum) bagasse-shell, orange (Citrus sinensis) peel-bagasse, and eucalyptus (Eucalyptus globulus) leaves, obtained from a biodrying process were transformed into activated carbons using phosphoric acid as activating agent. The resulting materials were physicochemically characterized and after that, carbonaceous electrodes were prepared to test the feasibility of using them in a discoloration electro-Fenton wastewater treatment process. Orange peel-bagasse biodried precursor transformed into activated carbon showed the highest efficiency when used as the modifier in a carbon paste electrode due to its highest porosity, electroactive area (24.9x10-2 cm2), and roughness (1.21 a.u.), also to its chemical affinity for anionic molecules. These properties, in addition to the capability of electro-sorb iron ions on the surface during the Fenton reaction, allowed a 44 % methyl orange discoloration efficiency. Sugarcane bagasse-peel and eucalyptus leaves biodried residues were also evaluated with efficiencies under 30 %, mainly attributed to intrinsic composition of the precursor materials. Resumen. La transformación de los residuos agrícolas en carbón activado representa un enfoque atractivo y novedoso, además de que representa una alternativa a la reducción de la contaminación asociada a la degradación de residuos orgánicos. Los residuos orgánicos de bagazo de caña de azúcar (Saccharum officinarum), bagazo y cáscara de naranja (Citrus sinensis), y hojas de eucalipto (Eucalyptus globulus), que fueron obtenidos de un proceso de biosecado, se transformaron en carbón activado utilizando ácido fosfórico como agente activante. Los materiales resultantes se caracterizaron fisicoquímicamente y después de eso, se prepararon electrodos de pasta de carbón modificados con estos materiales, para estudiar la viabilidad de utilizarlos en un proceso de tratamiento de aguas residuales mediante electro-Fenton. El precursor biosecado de bagazo y cáscara de naranja transformado en carbón activado mostró la mayor eficiencia cuando se usó como modificador en un electrodo de pasta de carbón, debido a su mayor porosidad, área electroactiva (24.9x10-2 cm2) y rugosidad (1.21), también debido a su mayor afinidad química por moléculas aniónicas. Estas propiedades, aunadas a la capacidad de electro-sorber iones de hierro en la superficie durante la reacción de Fenton, permitieron una eficiencia de decoloración del naranja de metilo del 44 %. También se evaluaron residuos biosecados de bagazo de caña de azúcar y hojas de eucalipto, con eficiencias inferiores al 30 %, atribuidas principalmente a la composición intrínseca de los materiales precursores.","PeriodicalId":17377,"journal":{"name":"Journal of the Mexican Chemical Society","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-09-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135109860","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Metallurgical Grade Silicon as Electrode Material of Lithium Ion Batteries","authors":"Julieta Rojas-Calderón, Enrique Quiroga-González","doi":"10.29356/jmcs.v67i4.2043","DOIUrl":"https://doi.org/10.29356/jmcs.v67i4.2043","url":null,"abstract":"Abstract. A study of the performance of metallurgical grade silicon as active material of electrodes of lithium ion batteries has been performed. The study has been carried out by means of charge and discharge galvanostatic measurements comparing between samples with different contents of impurities. This allows to elucidate the effect of the presence of certain impurities in the performance of the material in batteries. Unlike other existing works, this one has the particularity of showing specifically the concentration and type of impurities in the active material. Resumen. Se ha realizado un estudio del rendimiento de silicio de grado metalúrgico como material activo de electrodos de baterías de ión litio. El estudio se ha basado en mediciones de carga y descarga galvanostática, comparando entre muestras con diferente contenido de impurezas. Esto permite dilucidar el efecto de la presencia de ciertas impurezas en el rendimiento del material en baterías. A diferencia de otros trabajos existentes, este tiene la particularidad de mostrar específicamente la concentración y tipo de impurezas en el material activo.","PeriodicalId":17377,"journal":{"name":"Journal of the Mexican Chemical Society","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-09-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135109861","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Electrochemical and Gravimetric Study on Corrosion Inhibition of Carbon Steels Exposed to Oilfield Produced Water","authors":"Luis Quej Ake, J. L. Alamilla, A. Contreras","doi":"10.29356/jmcs.v67i4.1937","DOIUrl":"https://doi.org/10.29356/jmcs.v67i4.1937","url":null,"abstract":"Abstract. Two corrosion inhibitors (CI) were evaluated to study the protection behaviours of three carbon steels: X52, X60, and X70 in an oilfield produced water. The water was subjected to unstirred condition and a rotation speed of 600 rpm to simulate a stagnant and homogeneous solutions, respectively, it is in pipelines at temperature range of 30 °C to 60 °C. The internal corrosion rate and inhibition efficiencies were measured using polarization curves and gravimetric tests, complimented with the surface analysis of the corroded carbon steel samples using scanning electron microscopy (SEM). The experimental results suggested that the chlorides compounds, H2S, metals, and the inhibitor type modified the corrosion rate of the carbon steels under study. High corrosion rates were achieved on X70 steel at the temperature of 30 °C and 50 °C under 600 rpm. It was determined that X52 steel had the highest corrosion rate at 60 °C and 600 rpm. While an adequate protection of X70 steel was confirmed with a high inhibition efficiency using a naphthenic imidazoline as corrosion inhibitor. Resumen. Se evaluaron dos inhibidores de corrosión para estudiar los comportamientos de protección de tres aceros al carbono: X52, X60 y X70 en agua congénita. El agua se sometió a condiciones sin agitación y una velocidad de rotación de 600 rpm para simular soluciones estancadas y homogéneas, respectivamente, el cual se encuentra en tanques de almacenamiento y tuberías en un rango de temperatura de 30 °C a 60 °C. La velocidad de corrosión interna y los valores de las eficiencias a la inhibición se determinaron mediante curvas de polarización y pruebas gravimétricas, las que fueron complementadas con el análisis de la superficie de las muestras de acero al carbono corroídas mediante microscopía electrónica de barrido. Los resultados experimentales sugirieron que los compuestos de cloruros, H2S, metales y el tipo de inhibidor, modificaron la velocidad de corrosión de los aceros al carbono en estudio. Altos valores de corrosión en acero X70 fueron alcanzados a la temperatura de 30 °C y 50 °C usando 600 rpm. Se determinó que el acero X52 tuvo la velocidad de corrosión más alta a 60 °C y 600 rpm. Mientras que se confirmó una protección adecuada del acero X70 con una alta eficiencia de inhibición usando imidazolina nafténica como inhibidor de corrosión.","PeriodicalId":17377,"journal":{"name":"Journal of the Mexican Chemical Society","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-09-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135109864","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Editorial Special Issue Dedicated to Dr. Víctor Manuel Loyola Vargas","authors":"F. Vázquez-Flota","doi":"10.29356/jmcs.v67i3.2094","DOIUrl":"https://doi.org/10.29356/jmcs.v67i3.2094","url":null,"abstract":"","PeriodicalId":17377,"journal":{"name":"Journal of the Mexican Chemical Society","volume":null,"pages":null},"PeriodicalIF":1.5,"publicationDate":"2023-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76392698","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Transformation of Tagetes erecta L. with the GUS Reporter Gene Via Agrobacterium tumefaciens","authors":"Elidé Avilés Berzunza, Johny Avilez Montalvo, Reyna Gómez Villa, G. Godoy-Hernández","doi":"10.29356/jmcs.v67i3.2059","DOIUrl":"https://doi.org/10.29356/jmcs.v67i3.2059","url":null,"abstract":"Abstract. Tagetes erecta L. (var. Marvel orange) a plant native to Mexico with traditional (used in religious ceremonies, as antiparasitic, insecticide, etc.) and industrial uses (flour of young flowers is used as food supplement in chicken and crustacean farms for its high content of carotenoids). Currently, there is great interest in achieving stable genetic transformation of this species with genes of agricultural interest; thus, the objective of this work was to optimize a protocol for stable transformation of T. erecta L. Shoot-tips from in vitro seedlings were transformed with Agrobacterium tumefaciens LBA4404 strain carrying the binary vector pCAMBIA 2301. Regeneration of transformed seedlings was performed in the presence of 50 mg·L-1 kanamycin. Stable genetic transformation of plantlets was demonstrated through positive GUS staining in leaves and flowers. PCR analysis detected the presence of a 600 bp fragment of the neomycin phosphotransferase II (NPTII) gene in the genomic DNA from regenerated seedlings. Transformation frequency was 40 %. To the best of our knowledge, this work is the second report of a successful stable transformation of T. erecta L. plants with GUS reporter via A. tumefaciens. This transformation protocol can be used to introduce genes in T. erecta L. to manipulate the isoprenoids biosynthetic pathways.\u0000 \u0000Resumen. Tagetes erecta L. (var. naranja Marvel) es una planta originaria de México con usos tradicionales (utilizada en ceremonias religiosas, como antiparasitario, insecticida, etc.) e industriales (la harina de flores jóvenes se usa como complemento alimenticio en granjas de pollos y crustáceos por su alto contenido en carotenoides). Actualmente, existe un gran interés en lograr la transformación genética estable de esta especie con genes de interés agrícola; por lo tanto, el objetivo de este trabajo fue optimizar un protocolo para la transformación estable de T. erecta L. Las puntas de brotes de plántulas in vitro se transformaron con la cepa LBA4404 de Agrobacterium tumefaciens que lleva el vector binario pCAMBIA 2301. La regeneración de las plántulas transformadas se realizó en presencia de 50 mg·L-1 de kanamicina. La transformación genética estable de las plántulas se demostró mediante tinción positiva de GUS en hojas y flores. Los análisis de PCR detectaron la presencia de un fragmento de 600 pb del gen de la neomicina fosfotransferasa II (NPTII) en el ADN genómico de las plántulas regeneradas. La frecuencia de transformación fue del 40 %. Hasta donde sabemos, este trabajo es el segundo reporte de una transformación estable exitosa de plantas de T. erecta L. con el gen reportero GUS a través de A. tumefaciens. Este protocolo de transformación se puede utilizar para introducir genes en T. erecta L., para manipular las rutas de biosíntesis de isoprenoides.","PeriodicalId":17377,"journal":{"name":"Journal of the Mexican Chemical Society","volume":null,"pages":null},"PeriodicalIF":1.5,"publicationDate":"2023-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89585437","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Recent Advances in the Bioherbicidal Potential of Tenuazonic Acid, an Alternaria spp. mycotoxin","authors":"Néstor Daniel Sotelo‐Cerón, J. Martínez‐Álvarez, I. Maldonado-Mendoza","doi":"10.29356/jmcs.v67i3.1994","DOIUrl":"https://doi.org/10.29356/jmcs.v67i3.1994","url":null,"abstract":"Abstract. This review addresses the current knowledge on the phytotoxic roles of tenuazonic acid and its biosynthesis in Alternaria. We examine recent advances in the biosynthesis of this toxin produced by A. alternata and other fungi; the pathogenicity mechanisms that this molecule displays to exert its bioherbicidal activity; and the risks for human and animal health involved in using tenuazonic acid versus a native mix of toxins produced by A. alternata. Finally, we discuss the potential use of tenuazonic acid versus fungal isolates for agricultural weed control.\u0000 \u0000Resumen. Esta revisión aborda el estado del arte en el conocimiento acerca de los mecanismos de fitotoxicidad del ácido tenuazónico y su biosíntesis en Alternaria. Se examinan los avances más recientes en la biosíntesis de esta toxina producida por A. alternata y otros hongos; los mecanismos de patogenicidad que esta molécula emplea para ejercer su actividad bioherbicida; así como los riesgos para la salud humana y animal involucrados en el uso de ácido tenuazónico comparado a una mezcla de las toxinas producidas por A. alternata. Finalmente, se discute el uso potencial del ácido tenuazónico versus aislados fúngicos para el control de malezas en la agricultura.","PeriodicalId":17377,"journal":{"name":"Journal of the Mexican Chemical Society","volume":null,"pages":null},"PeriodicalIF":1.5,"publicationDate":"2023-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80462539","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Exploring the Impact of Low Light Intensity on DNA Methylation in Agave angustifolia Haw. Albino Variant","authors":"Fátima Duarte-Aké, C. De-la-Peña","doi":"10.29356/jmcs.v67i3.1943","DOIUrl":"https://doi.org/10.29356/jmcs.v67i3.1943","url":null,"abstract":"Abstract. Light is an essential environmental factor that regulates important plant processes, including photosynthesis, photoprotection, and the accumulation of pigments such as chlorophylls and carotenoids. Conversely, the absence of light initiates the etiolation phenomenon, characterized by a decrease in photosynthetic and photoprotective pigments. In contrast, albinism is a rare variant characterized by the absence of chloroplasts, chlorophyll, and other pigments, even in the presence of light. Albinism may occur spontaneously in plant tissue culture (PTC) and is considered an unexplored phenotypic variant. During micropropagation of Agave angustifolia Haw., two somaclonal variants emerged from green plantlets: albino and variegated. We demonstrate that low-intensity light exposure triggers greener pigmentation in albino plantlets accompanied by an increase in global DNA methylation levels. Our findings suggest the possibility of chloroplast biogenesis under low-intensity light and provide insight into the potential role of DNA methylation in regulating plant responses to light intensity and highlight the importance of studying the effects of different light conditions on plant development and physiology.\u0000 \u0000Resumen. La luz es un factor ambiental esencial que regula importantes procesos de las plantas, incluyendo la fotosíntesis, la fotoprotección y la acumulación de pigmentos como las clorofilas y los carotenoides. Por el contrario, la ausencia de luz inicia el fenómeno de etiolación, caracterizado por una disminución de los pigmentos fotosintéticos y fotoprotectores. En contraste, el albinismo es una rara variante caracterizada por la ausencia de cloroplastos, clorofila y otros pigmentos, incluso en presencia de luz. El albinismo puede ocurrir espontáneamente en el cultivo de tejidos vegetales (PTC) y se considera una variante fenotípica inexplorada. Durante la micropropagación de Agave angustifolia Haw. surgieron dos variantes somaclonales a partir de las plántulas verdes: albino y variegado. Demostramos que la exposición a la luz de baja intensidad desencadena una pigmentación verde en las plántulas albinas acompañada de un aumento en los niveles globales de metilación del ADN. Nuestros hallazgos sugieren la posibilidad de la biogénesis de cloroplastos bajo luz de baja intensidad y proporcionan información sobre el posible papel de la metilación del ADN en la regulación de las respuestas de las plantas a la intensidad de la luz, destacando la importancia de estudiar los efectos de diferentes condiciones de luz en el desarrollo y la fisiología de las plantas.","PeriodicalId":17377,"journal":{"name":"Journal of the Mexican Chemical Society","volume":null,"pages":null},"PeriodicalIF":1.5,"publicationDate":"2023-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83231252","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Pulcaffeate, a Trimeric Caffeic Acid Derivative from Bourreria pulchra","authors":"Gilda Erosa-Rejón, Alejandro Yam-Puc, L. Peña‐Rodríguez, O. Sterner","doi":"10.29356/jmcs.v67i3.1985","DOIUrl":"https://doi.org/10.29356/jmcs.v67i3.1985","url":null,"abstract":"Abstract. The trimeric caffeic acid derivative pulcaffeate (1) was isolated from the organic crude extract of the roots of Bourreria pulchra (Boraginaceae). The biosynthesis of 1 appears to involve an intramolecular Diels-Alder reaction between a cyclohexa-1,3-diene intermediate, generated by the oxidation of the aromatic ring of a cinnamic acid unit, and the conjugated double bond of a caffeic acid unit. The structure of the new metabolite was elucidated through a detailed analysis of its 1H and 13C NMR spectroscopic data. This is the first report of a trimeric metabolite occurring in B. pulchra.\u0000 \u0000Resumen. Pulcafeato (1) un derivado trimérico del ácido cafeico fue aislado del extracto orgánico crudo de las raíces de Bourreria pulchra (Boraginaceae). La biosíntesis de 1 parece llevarse a cabo mediante una reacción intramolecular de Diels-Alder entre un intermediario de cyclohexa-1,3-dieno, generado durante la oxidación del anillo aromático de una unidad de ácido cinámico, y el doble enlace conjugado de una unidad de ácido cafeico. La estructura del nuevo metabolito fue elucidada mediante el análisis detallado de sus datos espectroscópicos de RMN de 1H y 13C. Este es el primer reporte sobre la presencia de un metabolito trimérico en B. pulchra.","PeriodicalId":17377,"journal":{"name":"Journal of the Mexican Chemical Society","volume":null,"pages":null},"PeriodicalIF":1.5,"publicationDate":"2023-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76355620","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Heat Stress in Different Development Stages of Wheat Modifies the Grain Chemical Composition and Germination Index","authors":"Katheryne Fernández-Padilla, Rosabel Vélez-de la Rocha, E. Valenzuela-Soto","doi":"10.29356/jmcs.v67i3.2050","DOIUrl":"https://doi.org/10.29356/jmcs.v67i3.2050","url":null,"abstract":"Abstract. Climate change is causing increases in temperature in wheat-producing areas of the world. The global warming conditions put wheat production at risk. In wheat, heat stress causes a decrease in the yield due to retarding grain fill time and maturity. This work aimed to evaluate the grain chemical composition of six wheat genotypes subjected to heat stress during the vegetative and reproductive stages and to relate it to germination. Grains of six wheat genotypes were used in this study, cultivated in the Yaqui Valley, Sonora, in December 2020 and January and October 2021. The flour was obtained from whole grains (40 gr of each genotype and each sowing date). Proximal analyses were done following AACC and AOAC methods. Starch content was determined using a commercial kit from Megazyme. Changes in size, shape, and colour were observed in all the seeds progeny of plants under heat stress during the vegetative and reproductive stages. Heat stress during the reproductive stage reduced the thousand-grain weight, total solids, and protein content in the progeny grains but increased the percentage of moisture, ash, total starch, and germination index. Heat stress during the vegetative stage reduced total solids content and increased thousand-grain weight, moisture, and total starch in the progeny grains. The germination index in seeds from plants subjected to heat stress during the reproductive stage was associated with total starch content and a trend to decrease total protein. That association was not found in seeds from plants under heat stress during the vegetative stage.\u0000 \u0000Resumen. El cambio climático incrementa la temperatura en áreas productoras de trigo y pone en riesgo su producción mundial. En trigo, el estrés por calor disminuye el rendimiento, tiempo de llenado de grano y días de maduración. El objetivo del presente trabajo fue evaluar la composición química de los granos de seis genotipos de trigo sometidos a estrés por calor durante las etapas vegetativa y reproductiva y su relación con la germinación. Se utilizaron granos de seis genotipos de trigo, cultivados en el Valle del Yaqui, Sonora, en diciembre 2020, enero y octubre 2021. Se obtuvo harina de granos completos (40 g de grano por genotipo y fecha de siembra). El análisis proximal se determinó siguiendo los métodos de la AACC y AOAC. El contenido de almidón se obtuvo utilizando un kit comercial de Megazyme. Se observaron cambios de tamaño, forma y color en semillas progenie de plantas estresadas en las etapas vegetativa y reproductiva. El estrés por calor en la etapa reproductiva disminuyó el peso de mil granos, los sólidos totales y el índice de germinación. El estrés por calor en la etapa vegetativa redujo el contenido de sólidos totales e incrementó el peso de mil granos, humedad y almidón total en los granos progenie. El índice de germinación se asoció al contenido total de almidón y a la tendencia de disminución en proteína total de las semillas de plantas estresadas en ","PeriodicalId":17377,"journal":{"name":"Journal of the Mexican Chemical Society","volume":null,"pages":null},"PeriodicalIF":1.5,"publicationDate":"2023-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88172341","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Phytochemical Compounds from Xcatik (Capsicum annuum L.) Chili Tissues Extracted by Uae: Biological Activity and Phenolic Profile","authors":"N. Pacheco, E. Herrera-Pool, D. Castañeda-Valbuena, J. C. Cuevas-Bernardino, C. C. Castillo-Aguilar, R. Andueza-Noh, R. Garruña-Hernández, A. Ramos-Díaz, T. Ayora-Talavera","doi":"10.29356/jmcs.v67i3.1970","DOIUrl":"https://doi.org/10.29356/jmcs.v67i3.1970","url":null,"abstract":"Abstract. Phenolic compounds and capsaicinoids present in different tissues (placenta, pericarp, and seeds) of the chili pepper fruit Capsicum annuum L. (cv. xcatik) cultivated in the Yucatán peninsula (Mexico) were analyzed. For this purpose, fresh and dehydrated chili peppers tissues were used. The phenolic compounds and capsaicinoids were extracted using ultrasound-assisted extraction (UAE) and compared to the maceration method. Extracts from each fruit tissue were studied for their antioxidant properties, and a phenolic profile of the whole fruit was performed using ultra-high-performance liquid chromatography with a photodiode array detector coupled to mass spectrometry (UPLC-PAD-ESI-MS). The xcatik chili pepper (XCP) presented a high content of phenolic compounds (11.67±3.34 mg GAE/g DW). The capsaicin:dihydrocapsaicin ratio was 2:1. Additionally, 17 phenolic compounds were detected in the extract of the whole fruit. This study provides a first scan of the phenolic composition and capsaicinoids content of the different tissues of the XCP fruit, as well as the correlation of these bioactive compounds with the antioxidant capacity, highlighting the recovery of bioactive compounds with great antioxidant power.\u0000 \u0000Resumen. El contenido de compuestos fenólicos y capsaicinoides presentes en diferentes tejidos (placenta, pericarpio y semilla) de los frutos de chile Capsicum annuum L. (cv. xcatik) cultivados en la península de Yucatán (Mexico) fue analizado. Para dicho propósito, los tejidos frescos y deshidratados fueron evaluados. Los compuestos fenólicos y los capsaicinoides fueron extraídos usando la Extracción Asistida por Ultrasonido (EAU) y comparados con el método de maceración. Los extractos de cada tejido del fruto fueron estudiados con relación a sus propiedades antioxidantes, y el perfil fenólico del fruto completo fue realizado usando cromatografía líquida de ultra alta resolución con un detector de arreglo de fotodiodos y acoplado a espectrometría de masas (UPLC-PAD-ESI-MS). El chile xcatik (XCP) demostró ser un fruto con alto contenido de compuestos fenólicos (11.67±3.34 mg GAE/g peso seco). La relación capsaicina:dihidrocapsaicina fue 2:1. Adicionalmente, la presencia de 17 compuestos fenólicos fue detectada en el extracto del fruto completo. Este estudio proporciona un primer barrido de la composición fenólica y el contenido de capsaicinoides de los diferentes tejidos del fruto XCP, así como la correlación de estos compuestos bioactivos con la actividad antioxidante, resaltando la recuperación de compuestos bioactivos con un alto poder antioxidante.","PeriodicalId":17377,"journal":{"name":"Journal of the Mexican Chemical Society","volume":null,"pages":null},"PeriodicalIF":1.5,"publicationDate":"2023-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84390550","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}