Teor de taninos em três espécies medicinais arbóreas simpátricas da caatinga

Monteiro, Júlio Marcelino; Neto, Ernani Machado de Freitas Lins; Amorim, Elba Lúcia Cavalcanti de; Strattmann, Ruth R.; Araújo, Elcida de Lima; Albuquerque, Ulysses Paulino

doi:10.1590/s0100-67622005000600020

Cited by 32 publications

(26 citation statements)

References 14 publications

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“…Monteiro et al (2005) observed a high level of tannins and flavonoids in extracts of the leaves and bark of this species, which were also present in our sample. In another study, Silva et al (2012) found saponins in their leaf extract.…”

Section: Resultssupporting

confidence: 79%

Chemical composition and evaluation of modulatory of the antibiotic activity from extract and essential oil of Myracrodruon urundeuva

Figueredo¹,

Lucena²,

Tintino³

et al. 2013

Pharmaceutical Biology

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Context: The combination of antibiotics with natural products has demonstrated promising synergistic effects in several therapeutic studies. Objective: The aim of this study was to determine the effect of a combination of an ethanol extract of Myracrodruon urundeuva Fr. All. (Anacardiaceae) (aroeira plant) and its essential oil with six antimicrobial drugs against multiresistant strains of Staphylococcus aureus and Escherichia coli from clinical isolates. Materials and methods: After identification of the chemical components by GC-MS, the antibacterial activity of the natural products and antibiotics was assessed by determining the minimal inhibitory concentration (MIC) using the microdilution method and concentrations ranging 8-512 mg/mL and 0.0012-2.5 mg/mL, respectively. Assays were performed to test for a possible synergistic action between the plant products and the antimicrobials, using the extract and the oil at a sub-inhibitory concentration (128 mg/mL) and antibiotic at concentrations varying between 8 and 512 mg/mL. Results: The GC-MS analysis identified the main compound as d-carene (80.41%). The MIC of the natural products was 41024 mg/mL, except against S. aureus ATCC25923. Only the combinations of the natural products with gentamicin, amikacin and clindamycin were effective against S. aureus 358, enhancing the antibiotic activity by reducing the MIC. Conclusions: The extract from aroeira showed a higher antibacterial activity and the oil was more effective in potentiating the activity of conventional antibiotics.

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Section: Resultssupporting

confidence: 79%

Chemical composition and evaluation of modulatory of the antibiotic activity from extract and essential oil of Myracrodruon urundeuva

Figueredo¹,

Lucena²,

Tintino³

et al. 2013

Pharmaceutical Biology

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“…Phytochemical investigations have demonstrated the presence of secondary metabolites, such as flavonoids, diterpenes, tannins and lignans [6][7][8][9][10]. Several biological activities have already been tested with this species, among which we can highlight the antimicrobial activity against Staphylocus aureus, Escherichia coli, Enterococcus faecalis, Klebsiella pneumoniae, Salmonella spp., S. Aureus e Pseudomonas aeruginosa, antioxidant, gastro protective, anti-inflammatory, antinociceptive and anthelmintic activity, which corroborates many of its traditional uses.…”

Section: Introductionmentioning

confidence: 99%

Thermal Degradation Kinetics of Kaempferol and Quercetin in the Pre-Formulated of the Standardized Extracts of Poincianella Pyramidalis (Tul.) L. P. Queiroz Obtained by Spray Dryer

Oliveira

Leite

Dantas

et al. 2017

Int J Pharm Pharm Sci

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Objective: The aim of this work was to evaluate the stability and determine the kinetic parameters of degradation of biomarkers kaempferol and quercetin, present in the pre-formulated of the extract of Poincianella pyramidalis obtained by a spray dryer. Methods:A 2 3 experimental design coupled with RSM was applied to evaluate and optimize the effects of processing parameters on the content of chemical markers in dry extracts by a spray dryer. Stability testing was performed to verify the influence of temperature on the degradation of kaempferol and quercetin present in the pre-formulated. The markers contents were determined by HPLC.Results: Surface response analysis showed the influence of the independent variables on the responses of the concentration kaempferol and quercentin biomarkers on the process. The variables of the inlet air temperature, flow feed rate and the adjuvant ratio presented negative responses with significant difference (p<0.05). According to the data obtained in the stability of the pre-formulated studied zero and second orders kinetics models the for degradation of the kaempferol and only second order kinetic model for the quercetin. It was also evaluated reducing the concentration of both biomarkers studied throughout the study. Conclusion:In the present study, it was observed that all independent variables of the drying process by spray dryer showed the greatest influence on the concentration of the studied markers. Two markers had a different thermal behavior compared to the different excipients studied and there was degradation of both the quercentin biomarker and kaempferol during the study period.

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“…L.P. Queiroz is an arboreal species endemic to the Caatinga (Monteiro et al 2005), popularly known by its common name "catingueira" (Braga, 1960), which is found in several plant associations occurring in the states of Piauí, Ceará, Rio Grande do Norte, Paraiba, Pernambuco, Alagoas, Sergipe, Bahia, and Northern Minas Gerais being widely used by local communities for production of firewood and charcoal (Silva et al 2009). …”

Section: Introductionmentioning

confidence: 99%

Physiological maturity of fruits and seeds of Poincianella pyramidalis (Tul.) L.P. Queiroz

Lima

Bruno

Silva

et al. 2012

Rev. bras. sementes

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-The Leguminosae family is one of the most representative botanical families of the Caatinga, with 80 endemic species, highlighting the catingueira (Poincianella pyramidalis). The objective of this research work was to study the maturation process of P. pyramidalis seeds based on the physiological maturity. Five harvest of fruits and seeds were carried out, with 15 days interval each, in a period from July to September 2010. The harvests began 75 days after anthesis (d.a.a.) and lasted until 135 d.a.a. Fruits and seeds were subjected to the following assessments: size, moisture content, and dry mass of fruits and seeds; and germination and vigor of seeds (first count of germination, germination speed index, length and dry mass of seedling). Under the environmental conditions of municipality of Soledade, State of Paraiba, Northeast Brazil, the point of physiological maturity of P. pyramidalis seeds occurs at 125 d.a.a., when the maximum accumulation of dry mass is 1.993 g and moisture content is 21%. The ideal point of harvest is between 130 d.a.a and 135 d.a.a., before natural dehiscence, when the moisture content of seeds is between 13.0% and 5.0%.

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Teor de taninos em três espécies medicinais arbóreas simpátricas da caatinga

Cited by 32 publications

References 14 publications

Chemical composition and evaluation of modulatory of the antibiotic activity from extract and essential oil of Myracrodruon urundeuva

Chemical composition and evaluation of modulatory of the antibiotic activity from extract and essential oil of Myracrodruon urundeuva

Thermal Degradation Kinetics of Kaempferol and Quercetin in the Pre-Formulated of the Standardized Extracts of Poincianella Pyramidalis (Tul.) L. P. Queiroz Obtained by Spray Dryer

Physiological maturity of fruits and seeds of Poincianella pyramidalis (Tul.) L.P. Queiroz

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