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Id: biblio-1285566
Autor: Pozza Junior, Mario Cezar; Pandini, Jéssica Angela; Hein, Daiane Paulina Reichert; Silveira, José Aldemir da; Stangarlin, José Renato; Portz, Roberto Luis; Bonett, Lucimar Pereira.
Título: Phaseolin Induction on Common-Bean Cultivars and Biological Control of Colletotrichum lindemuthianum 89 Race by Baccharis trimera (Less) Dc
Fonte: Braz. arch. biol. technol;64(spe):e21200816, 2021. tab, graf.
Idioma: en.
Resumo: Abstract The objective of this work was to evaluate the fungitoxic effect of the aqueous extracts of Baccharis trimera on the mycelial growth of Colletotrichum lindemuthianum 89 race, as well as its effect on the accumulation of phaseolin in hypocotyls of different cultivars and common bean varieties. It was obtained 20% aqueous extract from plants collected in municipalities of the Western Region of Paraná. Blocks containing C. lindemuthianum mycelium were transferred to Petri dishes containing medium with the different extracts and incubated at 25 °C. The colonies diameter was measured until the 12th day. Effects of aqueous extracts on phaseolin production was evaluated in hypocotyls of Carioca, Cnpf 8104, Soberana, Tibatã, Uirapurú cultivars, as well as Rosinha and Vermelho varieties. Each one cultivar and variety hypocotyl was transferred separately to test tubes containing 500 μL of 20% aqueous extracts. Sterile water, Bion®, and UV was used as controls. The phaseolin production was measured in spectrophotometer [280 nm]. Results of the evaluation of the antifungal activity of aqueous extracts of Baccharis sp. specimens collected indicate that approximately 50% of the samples presented capacity to reduce between 74 and 92% of C. lindemuthianum growth. Cultivar Tibatã and Vermelho variety showed greater sensitivity over the applied treatments. Results of fungal filtrates and vegetal aqueous extracts presented a low capacity to induce the production of phaseolin in hypocotyls.
Descritores: Controle Biológico de Vetores
Colletotrichum/crescimento & desenvolvimento
Phaseolus
Baccharis/microbiologia
-Brasil
Responsável: BR1.1 - BIREME


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Id: biblio-1178857
Autor: Gutierrez D, María del Pilar; Salgado, Fanny Lizeth; Mamani Mayta, Deysi Danitza; Serrudo Juárez, Jorge Armando; Rodriguez Yujra, Nélida; Grados Torrez, Ricardo Enrique; Almanza Vega, Giovanna Rocío; Trino, Rodrigo Daniel; Zambrana Santander, Silvia; Arias Miranda, Juan Luis; Gonzales Dávalos, Eduardo.
Título: Evaluación de la actividad de Baccharis latifolia en modelos de artritis experimental / Evaluation of Baccharis latifolia activity in experimental arthritis models
Fonte: Con-ciencia (La Paz);4(2):21-33, nov. 2016. ilus..
Idioma: es.
Resumo: La artritis reumatoide (AR) es una enfermedad crónica de naturaleza autoinmune e inflamatoria que conduce a la formación de pannus seguido de la destrucción de las articulaciones, se caracteriza por hiperplasia sinovial, inflamación y angiogénesis. La especie vegetal Baccharis latifolia es utilizada tradicionalmente en muchas regiones de nuestro país para tratar el dolor, la inflamación y la artritis. En el presente estudio se evaluó la actividad antiartrítica del extracto etanólico de B. latifolia en modelos murinos de artritis reumatoide inducida por adyuvante, la estimación del edema/espesor de la pata inflamada, parámetros hematológicos (hemoglobina, velocidad de sedimentación globular, recuento de eritrocitos, recuento total de leucocitos) y observación radiológica fueron evaluados. La administración oral del extracto etanólico de B. latifolia (600 mg/kg de p.c.) inhibió significativamente (p<0.001) el incremento del edema/espesor de la pata en el modelo de artritis subcrónica. Del mismo modo, B. latifolia (500 mg/kg de p.c.) inhibió significativamente el incremento del edema/espesor de la pata en el modelo de artritis crónica (p<0.05, p<0.01), los pesos de los animales se mantuvieron sin variación durante el tratamiento. Por otro lado, los parámetros hematológicos señalan que los niveles de hemoglobina disminuyen en ratones artríticos y que esta disminución es revertida tras la administración de los extractos de B. latifolia, este mismo perfil de recuperación es observado tras el recuento de glóbulos rojos. Adicionalmente, la velocidad de sedimentación globular (VSG) incrementada en ratones artríticos, es revertida tras la administración de B. latifolia. El análisis radiológico evidenció el efecto del extracto etanólico de B. latifolia en el retraso de la destrucción ósea. Los resultados sugieren que el extracto etanólico de B. latifolia tiene una potencial actividad antiartrítica.

Rheumatoid arthritis (RA) is a chronic autoimmune and inflammatory disease leading to pannus formation followed by the destruction of the joints; it is characterized by synovial hyperplasia, inflammation and angiogenesis. The plant species Baccharis latifolia is traditionally used in many regions of our country to treat pain, inflammation and arthritis. In the present study the anti-arthritic activity of ethanol extract of B. latifolia was evaluated in murine experimental model of rheumatoid arthritis induced by adjuvant, edema estimation / thickness of the inflamed foot, hematological parameters (hemoglobin, erythrocyte sedimentation rate, erythrocyte count was assessed, total white blood cell) and radiological observation were evaluated. The oral administration of the ethanolic extract of B. latifolia (600 mg / kg p.c.) significantly inhibited (p<0,001) increased edema / paw thickness in the subchronic model of arthritis. Similarly, B. latifolia (500 mg / kg bw) significantly inhibited the increase of edema / paw thickness in the model of chronic arthritis (p <0.05, p <0.01), the weights of the animals were kept without variation during treatment. Moreover hematological parameters indicate that hemoglobin levels decrease in arthritic mice and that this decline is reversed after administration of the extracts of B. latifolia, this same profile is observed recovery after red blood cell count. Additionally, erythrocyte sedimentation rate (ESR) increased in arthritic mice is reversed after administration of B. latifolia. The radiological analysis showed the effect of ethanol extract of B. latifolia in delaying bone destruction. The results suggest that the ethanolic extract of B. latifolia has potential antiarthritic activity.
Descritores: Artrite Reumatoide
Doença Crônica
Baccharis
-Dor
Sedimentação Sanguínea
Hemoglobinas
Etanol
Parâmetros de Referência
Inflamação
Leucócitos
Responsável: BO138.1 - Biblioteca Central


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Id: biblio-1178841
Autor: Choque, Rigoberto; Gemio, Rómulo; Nogales, Jorge.
Título: Estudio de propiedades moleculares de cuatro flavonoides de Baccharis boliviensis / Study of molecular properties of four flavonoids of baccharis boliviensis
Fonte: Con-ciencia (La Paz);5(1):39-55, jun. 2017. tab..
Idioma: es.
Resumo: En este trabajo de investigación se realizó un estudio de relación estructura y actividad antioxidante empleando métodos computacionales basándose en propiedades estructurales y electrónicas, para lograr este objetivo se utilizó el programa computacional Hyperchem versión 8.0.1 empleando métodos cuánticos semiempiricos, a partir de las estructuras más estables obtenidas se calcularon longitudes de enlace, cargas atómicas, entalpias de disociación de enlace y orbitales moleculares de los cuatro flavonoides de Baccharis boliviensis aislados e identificados por el grupo de investigadores de Almanza, G. et.al en el año 2012. Al relacionar todos los datos obtenidos con la capacidad antioxidante se encontró que la actividad antioxidante entre los cuatro flavonoides el flavonoide 4 tiene mayor capacidad antioxidante debido al mayor número de grupos hidroxilo y a los valores bajos de energía de disociación de enlace EDE relativa respecto al flavonoide 1 que ocuparía el segundo lugar en términos de capacidad antioxidante, apoyan a estos resultados el hecho de considerar los valores de la segunda diferencia de energía de disociación de enlace EDE entre estos dos flavonoides se obtiene una diferencia de 1.106 H (Hartrees) para el flavonoide 4 y 1.4651H para el flavonoide 1. Los flavonoides 2 y 3 ocuparían las posiciones 3 y 4 en términos de capacidad antioxidante respectivamente. En conclusión la actividad antioxidante de los cuatro flavonoides estudiados presenta el siguiente orden de mayor a menor actividad antioxidante: flavonoide 4 > flavonoide 1 > flavonoide 2 > flavonoide 3.

In this research work was carried out a study of relationship structure and antioxidant activity using computational methods based on structural and electronic properties, to achieve this objective we used the computer program Hyperchem version 8.0.1 using semiempirical quantum methods, from structures More stable, bond lengths, atomic charges, bond dissociation enthalpies and molecular orbitals of the four Baccharis boliviensis flavonoids isolated and identified by the Almanza group, G Et.al in 2012, were calculated. By relating all the data obtained with the antioxidant capacity it was found that the antioxidant activity among the four flavonoids flavonoid 4 has higher antioxidant capacity due to the higher number of hydroxyl groups and the lower energy values of linkage dissociation EDE relative to flavonoid 1 that would occupy the second place in terms of antioxidant capacity, support to these results the fact of considering the values of the second energy difference of linkage dissociation EDE between these two flavonoids gives a difference of 1,106 H (Hartrees) for the flavonoid 4 and 1.4651H for flavonoid 1. The flavonoids 2 and 3 would occupy positions 3 and 4 in terms of antioxidant capacity respectively. In conclusion the antioxidant activity of the four flavonoids studied has the following order of highest to lowest antioxidant activity: Flavonoid 4> flavonoid 1> flavonoid 2> flavonoid 3.
Descritores: Software
Métodos
-Pesquisa
Flavonoides
Baccharis
Responsável: BO138.1 - Biblioteca Central


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Id: biblio-1132249
Autor: Oki, Yumi; Arantes-Garcia, Lucas; Costa, Marina Batista Morais; Nunes, Bárbara Cristina; Silveira, Bárbara Rúbia; Gélvez-Zúñiga, Irene; Franco, Augusto; Fernandes, Geraldo Wilson.
Título: CO2 Fertilizer Effect on Growth, Polyphenols, and Endophytes in Two Baccharis Species
Fonte: Braz. arch. biol. technol;63:e20190302, 2020. tab.
Idioma: en.
Resumo: Abstract In a climate change context, the buildup of CO2 will affect plant communities worldwide. This study evaluated the effects of CO2 enrichment on the development and defense of two Cerrado native species Baccharis dracunculifolia and B. platypoda and their associated endophytic fungi richness. The study took place in Open-Top Chambers, two with ambient CO2 concentration (~400 ppm) and two in an enriched environment (~800 ppm). Baccharis platypoda developed 20% more leaves under enriched CO2 conditions, whereas B. dracunculifolia was 30% taller and showed 27% more leaves than those under ambient conditions. In both species, leaf polyphenol concentration did not differ between treatments. Nevertheless, polyphenol content had a positive correlation with plant height on both species' individuals grown under CO2 enriched conditions. Endophytic fungi richness and colonization rate on both plant species did not differ between ambient and enriched conditions. Our results show the positive effect of CO2 fertilizer in at least one of the measured growth parameters. An important new finding was a synergistic increase in growth and chemical defense in both studied species under enriched CO2 conditions, suggesting higher carbon assimilation and accumulation. This study suggests that the effects on primary productivity and secondary metabolites of Baccharis species will potentially reflect on the diversity and distribution of Cerrado plants and their associated animal communities.
Descritores: Dióxido de Carbono/farmacologia
Baccharis/crescimento & desenvolvimento
Fertilizantes
Endófitos/crescimento & desenvolvimento
Polifenóis/biossíntese
-Baccharis/microbiologia
Baccharis/química
Responsável: BR1.1 - BIREME


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Id: biblio-1153292
Autor: Tomazzoli, Maíra Maciel; Amaral, Wanderlei do; Cipriano, Roger Raupp; Tomasi, Jéssica de Cássia; Gomes, Erik Nunes; Ferriani, Aurea Portes; Maia, Beatriz H. L. de Noronha Sales; Deschamps, Cicero.
Título: Chemical Composition and Antioxidant Activity of Essential Oils from Populations of Baccharis dracunculifolia DC. in Southern Brazil
Fonte: Braz. arch. biol. technol;64:e21190253, 2021. tab, graf.
Idioma: en.
Projeto: Coordination for the Improvement of Higher Education Personnel.
Resumo: HIGHLIGHTS Essential oils from populations of B. dracunculifolia were investigated. β-pinene and (E)-nerolidol were the main compounds in B. dracunculifolia populations. The difference in the chemical profile of the essential oils is quantitative only. There is a negative correlation between the antioxidant activity and spathulenol.

Abstract Baccharis dracunculifolia DC. is a Brazilian native plant, presenting wide chemical diversity and numerous pharmaceutical and industrial applications. This research assessed the yield, antioxidant activity and the chemical similarity of essential oils from 10 populations of B. dracunculifolia in the state of Paraná, southern Brazil. The extraction of the volatile compounds was carried out by hydrodistillation, the chemical composition was determined by GC/FID and GC/MS and the antioxidant activity by the DPPH method. The essential oil yield of wild B. dracunculifolia populations ranged from 0.14 to 0.87%. The oils were predominantly composed of oxygenated sesquiterpenes (34.16 - 51.01%), monoterpene hydrocarbons (18.02 - 46.17%) and sesquiterpenes hydrocarbons (9.60 - 17.70%). The major compounds found in all populations were β-pinene (7.65 - 29.8%) and (E)-nerolidol (9.11 - 21.68%). Essential oil solutions (20%) from different populations presented antioxidant capacity ranging from 27.78 to 91.67%. A negative correlation was found between the antioxidant activity and spathulenol (r = -0.696). Multivariate analyses separated the populations into three groups: (1) low concentrations of α-pinene (2.02 - 2.06%), (2) high concentrations of α-pinene (4.17 - 4.61%) and β-pinene (22.54 - 29.80%), and (3) intermediate concentrations of α-pinene (2.38 - 3.31%), β-pinene (12.77 - 19.03%) and spathulenol (6.02 - 9.06%).
Descritores: Óleos Vegetais/química
Óleos Voláteis/química
Baccharis/química
Antioxidantes/química
-Plantas Medicinais/química
Óleos Vegetais/isolamento & purificação
Brasil
Óleos Voláteis/isolamento & purificação
Extratos Vegetais/isolamento & purificação
Responsável: BR1.1 - BIREME


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Id: biblio-1148297
Autor: Santos, Cleberton Torres,; Teotônio, Luiz Eduardo Oliveira; Nascimento, Ana Paula Leite; Sousa Júnior, Darcio Luiz de; Benjamin, Ítalo Mykaell da Silva; Gondim, Cícera Natalia Figueiredo Leite; Coutinho, Henrique Douglas Melo; Leite, Nadghia Figueiredo.
Título: Assessment and antimricrobial modulating activity of the extract of Baccharis cinerea DC. from cariri cearense / Avaliação da atividade antimricrobiana e moduladora do extrato de Baccharis cinerea DC. oriunda do cariri cearense
Fonte: Biosci. j. (Online);36(6):2247-2254, 01-11-2020. graf.
Idioma: en.
Resumo: Baccharis cinerea belongs to the Asteraceae family,in Brazil is found in the Northeast and Southeast, occurring in the Caatinga and Mata Atlântica biomes, on the edges of the seasonal forests, board and altitude forests in both regenerating primary and secondary areas. Has proven antimicrobial and antiviral activity and is widely used in folk medicine for its various therapeutic effects and is used as an antiseptic for skin and wound infections, inflammation, diarrhea as well as being used as a purgative.The plants used in the traditional medicine are more and more explored scientifically because they are possible resources of substances with antimicrobial activity in front damage man's health microorganism. In this context the objective of the study was to investigate the antimicrobial activity, modulator activity of antibiotic and in vitro phytochemical prospection of leaf ethanol extracts. Tests were performed on the bacterial strains of Staphylococcus aureus (ATCC 25923), Pseudomonas aeruginosa (ATCC 15442) and Escherichia coli (ATCC 10536). The antibacterial activity was analyzed by means determining the Minimum Inhibitory Concentration (MIC). For the evaluation of the modulating activity, the microdilution method of the diluted extract samples with the antibiotic's amikacin, clindamycin and gentamicin was used. The MIC results were ≥ 1024 µg mL-1 by the bacterial strains. There was a relevance of concentrations in modulation with the antimicrobials tested such as amikacin and gentamicin, there were no discrepancy of clindamycin results in association with the extract. The chemical constituents found were leucoanthocyanidins, flabobenic tannins, flavanones, flavones, flavonoids, xanthones, chalcones, aurones. It is important to note that is necessary to do other studies to evaluate the potential of this species because it has important chemical compounds in reducing antimicrobial resistance.

Baccharis cinerea pertence à família Asteraceae, no Brasil é encontrada nas regiões Nordeste e Sudeste, ocorrendo nos biomas Caatinga e Mata Atlântica, nas bordas das florestas estacionais, tabuleiro e de altitude em áreas primárias e secundárias em regeneração. Tem atividade antimicrobiana e antiviral comprovada e é amplamente utilizado na medicina popular por seus diversos efeitos terapêuticos, sendo utilizado como antisséptico para infecções de pele e feridas, inflamação, diarreia e também como purgante. As plantas utilizadas na medicina tradicional são cada vez mais exploradas cientificamente, pois são possíveis recursos de substâncias com atividade antimicrobiana que prejudicam a saúde do homem. Neste contexto o objetivo do estudo foi investigar a atividade antimicrobiana, atividade moduladora de antibióticos e prospecção fitoquímica in vitro de extratos etanólicos de folhas. Os testes foram realizados nas cepas bacterianas de Staphylococcus aureus (ATCC 25923), Pseudomonas aeruginosa (ATCC 15442) e Escherichia coli (ATCC 10536). A atividade antibacteriana foi analisada por meio da determinação da Concentração Inibitória Mínima (CIM). Para avaliação da atividade moduladora, foi utilizado o método de microdiluição das amostras do extrato diluído com os antibióticos amicacina, clindamicina e gentamicina. Os resultados da MIC foram ≥ 1024 µg mL-1 pelas cepas bacterianas. Houve relevância das concentrações na modulação com os antimicrobianos testados como amicacina e gentamicina, não havendo discrepância nos resultados da clindamicina em associação com o extrato. Os constituintes químicos encontrados foram leucoantocianidinas, taninos flabobênicos, flavanonas, flavonas, flavonóides, xantonas, chalconas, auronas. É importante ressaltar que é necessária a realização de outros estudos para avaliar o potencial desta espécie, pois possui compostos químicos importantes na redução da resistência aos antimicrobianos.
Descritores: Plantas Medicinais
Baccharis
Compostos Fitoquímicos
Anti-Infecciosos
Responsável: BR396.1 - Biblioteca Central


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Id: biblio-1042941
Autor: Loja Herrera, Berta; Alvarado Yarasca, Ángel; Salazar Granara, Alberto; Ramos Yica, Eva; Jurado, Berta.
Título: Cribado fitoquímico del Baccharis latifolia (R&P.) Pers. (chilca) / Phytochemical screening of Baccharis latifolia (R&P.) Pers. (chilca)
Fonte: Rev. cuba. plantas med;22(1), ene.-mar. 2017. ilus, tab.
Idioma: es.
Resumo: Introducción: Baccharis latifolia (R.&P.) Pers. (chilca), es una especie espontánea que crece en las riberas de los ríos. En el Perú abunda y habita entre 1000 y 4000 m. Es una planta dioica arbustiva de 1 a 2 m de altura. Presenta tallo cilíndrico, estriado longitudinalmente; hojas simples, alternas, pecioladas; limbo aovado-lanceolado; capítulo en cimas corimbosas y aquenio cilíndrico.mObjetivo: identificar metabolitos secundarios de interés medicinal en las hojas de B. latifolia. Métodos: para la colección del material botánico se emplearon los métodos de Cerrate y Ramagosa et al. El cribado fitoquímico se realizó por el método de Olga Lock. Por colorimetría, se catalogó cualitativamente la presencia del metabolito en "+++" (abundante), "++" (moderado), "+" (leve) y "-" (ausencia). Se evaluó la presencia de los siguientes metabolitos: alcaloides, fenoles, flavonoides, carbohidratos, aminoácidos y lípidos. Resultados: los metabolitos detectados con alta presencia fueron los fenoles (+++) en todos los extractos, excepto en el extracto con solvente n-hexano. Asimismo, se evidenció la presencia de flavonoides (+++) y alcaloides (+++) en el extracto acidulado. Igualmente, se comprobó la existencia carbohidratos en todos los extractos excepto en el extracto con n-Hexano. No se detectaron aminoácidos ni lípidos. Conclusiones: las hojas de B. latifolia contienen abundantes compuestos fenólicos, en los extractos etanólico, clorofórmico y acidulado y se evidenció ausencia de estos en el extracto en n-hexano. Asimismo, se observó alta presencia de alcaloides en el extracto acidulado de B. latifolia. Los extractos de las hojas de B. latifolia no presentan aminoácidos ni lípidos(AU)

Introduction: Baccharis latifolia (R.&P.) Pers. (chilca) is a wild species that grows on riverbanks. The species is abundant in Peru, where it grows between 1 000 and 4 000 m. It is a shrubby dioicous plant 1 to 2 m in height. The stem is cylindrical and longitudinally striated; the leaves are simple, alternate and petiolated, with ovate-lanceolate blades; capitula in corymbous tips and cylindrical achenes. Objective: Identify secondary metabolites of medicinal interest in leaves of B. latifolia. Methods: Collection of the botanical material was based on the Cerrate and Ramagosa et al methods. Phytochemical screening followed Olga Lock's method. For colorimetry, presence of the metabolite was qualitatively classed as "+++" (abundant), "++" (moderate), "+" (mild) or "-" (absent). Presence of the following metabolites was evaluated: alkaloids, phenols, flavonoids, carbohydrates, amino acids and lipids. Results: Phenols were found to be abundant (+++) in all extracts, except for the extract with n-hexane solvent. Flavonoids (+++) and alkaloids (+++) were present in the acidulated extract. Carbohydrates were found in all extracts except for the extract with n-hexane. Amino acids and lipids were not found. Conclusions: Leaves of B. latifolia contain abundant phenolic compounds in the ethanolic, chloroformic and acidulated extracts, but they are absent in the n-hexane extract. Alkaloids were abundant in the acidulated extract of B. latifolia. Extracts of leaves of B. latifolia do not contain amino acids or lipids(AU)
Descritores: Plantas Medicinais
Preparações de Plantas/uso terapêutico
Baccharis
-Peru
Limites: Humanos
Responsável: CU1.1 - Biblioteca Médica Nacional


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Id: biblio-1146011
Autor: Agudelo, Ignacio J; Varela, Beatriz G; Wagner, Marcelo L; Ricco, Rafael A.
Título: Presencia de Baccharis spicata (Lam.) Baill. en muestras comerciales rotuladas como "carqueja" adquiridas en la Ciudad Autónoma de Buenos Aires / Presence of Baccharis spicata (Lam.) Baill. in comercial samples labeled as "carqueja" purchased in the City of Buenos Aires
Fonte: Bol. latinoam. Caribe plantas med. aromát;36(1):25-29, 2020. tab, ilus.
Idioma: es.
Resumo: El género Baccharis, perteneciente a la familia Asteraceae, es un género de plantas perennes, dioicas, de hábitos arbustivos o herbáceos, con hojas enteras o tallos alados. Este género se ha estudiado ampliamente desde el punto de vista etnobotánico, farmacobotánico y farmacognóstico. En la medicina popular argentina, se utilizan principalmente Baccharis articulata (Lam.) Pers., Baccharis trimera (Less.) DC. y Baccharis crispa Spreng. como digestivas y hepatoprotectoras en infusiones. Baccharis spicata (Lam.) Baill. es empleada como sustituyente de las especies antes mencionadas. Con el fin de conocer el grado de dicha sustitución se realizó un análisis prospectivo de muestras rotuladas como "carqueja" en herboristerías de la Ciudad Autónoma de Buenos Aires en los años 2017 y 2018 y se compararon sus caracteres morfológicos y micrográficos contra bibliografía especializada. Se determinó que cerca de la mitad de las muestras comercializadas corresponden a B. spicata y el resto a B. articulata, B. trimera y B. crispa.

The genus Baccharis belongs to the Asteraceae family and it is caracterized for its perennial, dioecious species with either leaves or winged stems. These plants have been widely studied regarding its ethnobotanical, pharmacobotanical and phytochemical aspects. Baccharis articulata (Lam.) Pers., Baccharis trimera (Less.) DC. and Baccharis crispa Spreng. are known as "carqueja", and are used in the of Argentinian folk medicine as hepatoprotective and digestive agents in infusions. Baccharis spicata (Lam.) Baill. has been cited in several investigations as a substitute of the above mentioned species. The aim of this article is to know the degree of this substitution by the prospection and the pharmacobotanical analysis of commercial samples labeled as "carqueja". Macroscopical and microscopical characters were obtained and compared to specialized bibliography. It was determined that near half of the obtained samples belonged to B. spicata y and the rest to B. articulata, B. trimera and B. crispa.
Descritores: Asteraceae
Baccharis
-Argentina
Compostos Fitoquímicos
Medicina Tradicional
Responsável: BR1.1 - BIREME


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Id: biblio-845111
Autor: Yoko Suzuki, Érika; Caneschi, César Augusto; Costa Fochat, Romário; Fernandes Brandão, Marcos Antônio; Rezende Barbosa Raposo, Nádia.
Título: Antimicrobial activity of essential oil from Baccharis trimera (Less.) DC. (carqueja-amarga) / Aceite esencial de Baccharis trimera (Less.) DC. (carqueja-amarga): actividad antimicrobiana
Fonte: Rev. cuba. plantas med;21(3), jul.-set. 2016. ilus, tab.
Idioma: en.
Resumo: Introduction: the recent enhancement of interest in green consumerism has given rise to a renewed scientific awareness towards essential oils. Essential oil from Baccharis trimera (Less.) DC. (B. trimera) (Asteraceae) is cited as one of the ten most consumed oils by the cosmetic and other industries in Brazil. Objective: to investigate the antimicrobial activity of the essential oil from the leaves of B. trimera against Staphylococcus epidermidis ATCC 12228, Proteus vulgaris ATCC 13315, Micrococcus luteus ATCC 7468 and Corynebacterium xerosis IAL105, which are the main bacteria responsible for bad perspiration odor. Methods: the gas chromatography (GC) analysis was performed and the antimicrobial activity was evaluated by means of the turbidimetric method, using a microdilution assay. Results: ywenty constituents were identified, being that ß-pinene (23.4 percent) was the major compound found. The minimum inhibitory concentration (MIC) values of the essential oil ranged from 500 µg/mL to 1,000 µg/mL. A detrimental effect of the essential oil was observed on the morphology of cell membranes of the bacteria studied by scanning electron microscopy (SEM). Conclusions: the results demonstrate the essential oil of B. trimera has potential in the application of antimicrobial agents in personal care products(AU)

Introducción: el reciente aumento del interés por el consumo verde ha dado lugar a una renovada conciencia científica hacia a los aceites esenciales. El aceite esencial de Baccharis trimera (Less.) DC. (B. trimera) (Asteraceae) es considerado uno de los diez aceites más consumidos por la industria cosmética del Brasil. Objetivos: valorar la actividad antimicrobiana del aceite esencial de hojas de B. trimera frente al Staphylococcus epidermidis ATCC 12228, Proteus vulgaris ATCC 13315, Micrococcus luteus ATCC 7468 y Corynebacterium xerosis IAL105, que son las principales bacterias responsables del mal olor que es consecuencia de la transpiración. Métodos: se realizó la cromatografía de gases (GG) y la actividad antimicrobiana fué valorada por el método turbidimétrico, usando el ensayo de microdilución. Resultados: se identificarón veinte constituyentes, siendo el ß-pineno (23,4 por ciento) el principal compuesto encontrado. Los valores de la concentración mínima inhibitoria (CMI) del aceite esencial variaron de 500 µg/mL a 1,000 µg/mL. Se observó un efecto perjudicial del aceite esencial en la morfología de las membranas celulares de las bacterias estudiadas por microscopía electrónica de barrido (SEM). Conclusión: los resultados demuestran que el aceite esencial de B. trimera tiene potencial en la aplicación de los agentes antimicrobianos en productos de higiene personal(AU)
Descritores: Plantas Medicinais
Óleos Voláteis/uso terapêutico
Cromatografia Gasosa/métodos
Baccharis
Produtos com Ação Antimicrobiana
Microscopia Eletroquímica de Varredura/métodos
-Brasil
Limites: Humanos
Responsável: CU1.1 - Biblioteca Médica Nacional


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Id: biblio-1999
Autor: Moreira, Valkíria Elizabete; Gasparetto, Carolina; Chibli, Lucas; Vieira, Glauciemar; Sousa, Orlando.
Título: Teores de fenóis totais e flavonoides e avaliação da atividade antioxidante de Baccharis trimera (Less) DC (Asteraceae) / Total phenolic and flavonoid contents and evaluation of antioxidant activity of Baccharis trimera (Less) DC (Asteraceae)
Fonte: HU rev;38(3/4):223-229, abr.-jun. 2012.
Idioma: pt.
Resumo: O presente trabalho teve como objetivo detectar a variação nos teores de fenóis totais e flavonoides e na atividade antioxidante em amostras de B. trimera. Amostras secas e pulverizadas foram submetidas à extração por maceração estática para obtenção dos extratos hexânico, em acetato de etila e etanólico. Prospecção fitoquímica e avaliação dos teores de constituintes fenólicos e da atividade antioxidante foram realizadas. Os dados foram demonstrados como média ± desvio padrão e análise de variância seguida de teste de Tukey foi utilizada para medir o grau de significância (p < 0,05). Flavonoides, taninos, cumarinas, terpenoides e esteroides, alcaloides e antraquinonas foram detectados nas amostras. Os teores de flavonoides totais variaram entre 1,99 ± 0,29 a 5,20 ± 0,31 g/100g, enquanto os fenóis totais foram de 1,56 ± 0,01 a 11,09 ± 0,13 g/100g. Os extratos produziram CE50 entre 35,65 ± 0,74 e 242,74 ± 6,49 µg/mL. Os resultados indicam que o uso de solventes de diferentes polaridades no processo de extração é uma importante estratégia para detectar variação nos teores de fenóis totais e flavonoides e na atividade antioxidante em amostras de B. trimera.
Descritores: Flavonoides
Baccharis
-Fenóis
Plantas Medicinais
Análise de Variância
Medicamentos Fitoterápicos
Antioxidantes
Tipo de Publ: Relatos de Casos
Responsável: BR378.1 - Biblioteca Central



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