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| Registros recuperados: 18 | |
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| Souza,Jeana M.E.; Chang,Marilene R.; Brito,Daniela Z.; Farias,Katyuce S.; Damasceno-Junior,Geraldo A.; Turatti,Izabel C.C.; Lopes,Norberto P.; Santos,Edson A.; Carollo,Carlos A.. |
| Abstract We evaluated the antimicrobial activity of Aspilia latissima - an abundant plant from the Brazilian Pantanal region - against Candida albicans, Candida parapsilosis, Candida krusei, Candida tropicalis, Pseudomonas aeruginosa, Enterococcus faecalis, Escherichia coli and Staphylococcus aureus. The crude extracts and fractions showed activity in all tested microorganisms. The chloroform fraction of the leaves and roots showed the most antimicrobial activity against S. aureus, with an MIC of 500 μg/mL. This fraction was submitted to bioautographic assays to characterize the activity of the compounds. Two bands from the leaves (L-A and L-B) and three bands from the roots (R-C, R-D and R-E) were bioactive. Within the root-derived bands, the terpene... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Aspilia latissima; Staphylococcus aureus; Bioautographic; MIC; Terpenes. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822015000401103 |
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| Campos,Felipe Girotto; Baron,Daniel; Marques,Marcia Ortiz Mayo; Ferreira,Gisela; Boaro,Carmen Silvia Fernandes. |
| The objective of this study was to characterize the chemical composition of the essential oil from the leaves of Annona emarginata (Schltdl.) H. Rainer 'terra-fria' and Annona squamosa L. The species were grown in a greenhouse for 18 months, which nutrient solution was applied weekly; the plants were then harvested and the leaves dried to extract the essential oil. The essential oil was analyzed by gas chromatography and mass spectrometry to study its chemical profiles. Eleven substances were found in the essential oil of A. emarginata, primarily (E)-caryophyllene (29.29%), (Z)-caryophyllene (16.86%), γ-muurolene (7.54%), α-pinene (13.86%), and tricyclene (10.04%). Ten substances were detected in the oil from A. squamosa, primarily (E)-caryophyllene... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Annonaceae; Secondary metabolites; Terpenes; Pharmacological potential. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-29452014000500024 |
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| Moreno,Paulo Roberto H.; Lima,Marcos Enoque Leite; Sobral,Marcos; Young,Maria Cláudia Marx; Cordeiro,Inês; Apel,Miriam Anders; Limberger,Renata Pereira; Henriques,Amélia Teresinha. |
| Eugenia brasiliensis Lam. is a variable species concerning fruit colour, with three recognized varieties. However, the definition of varieties is not easy for Myrtaceae species and not widely accepted. Two fruit colour varieties (purple and yellow) of E. brasiliensis had their essential oil composition analysed in order to give support to the existence of varieties for this species. Although, the major components in the leaf oil are the same monoterpenes for both varieties, alpha-pinene, beta-pinene and 1,8-cineol, the purple fruit variety accumulates more oxygenated sesquiterpenes (33.9%) than the one with yellow fruits (3.8%). The major differences occurred in purple fruits that present as major components caryophyllene oxide (22.2%) and alpha-cadinol... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Myrtaceae; Chemotypes; Terpenes; Pinenes; Caryophyllene oxide. |
| Ano: 2007 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162007000400014 |
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| GOMES, K. A.; ALMEIDA, T. C.; GESTEIRA, A. da S.; LÔBO, I. P.; GUIMARÃES, A. C. R.; MIRANDA, A. B. de; VAN SLUYS, M. A.; CRUZ, R. S. da; CASCARDO, J. C. M.; CARELS, N.. |
| We report here on the characterization of a cDNA library from seeds of Jatropha curcas L. at three stages of fruit maturation before yellowing. We sequenced a total of 2200 clones and obtained a set of 931 non-redundant sequences (unigenes) after trimming and quality control, ie, 140 contigs and 791 singlets with PHRED quality $10. We found low levels of sequence redundancy and extensive metabolic coverage by homology comparison to GO. After comparison of 5841 non-redundant ESTs from a total of 13193 reads from GenBank with KEGG, we identified tags with nucleotide variations among J. curcas accessions for genes of fatty acid, terpene, alkaloid, quinone and hormone pathways of biosynthesis. More specifically, the expression level of four genes... |
| Tipo: Separatas |
Palavras-chave: Biofuel; Terpenes; Pinhão manso; Melhoramento genetico vegatal.; Biocombustível; Jatropha Curcas.; Alkaloids; Fatty acids; Genomics.. |
| Ano: 2010 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/865928 |
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| Azevedo,Bianca Oliveira de; Oliveira,Lenaldo Muniz de; Lucchese,Angélica Maria; Silva,Daniel de Jesus da; Ledo,Carlos Alberto da Silva; Nascimento,Marilza Neves do. |
| ABSTRACT: The semiarid region of Brazil holds a great richness of medicinal and aromatic plants with considerable potential for pharmaceutical, food, cosmetic and biopesticide industries. Martianthus leucocephalus (Mart. Ex Benth.) J. F. B. Pastore is endemic to this region, and its essential oils contain a principle compound, isobornyl formate, which demonstrates antimicrobial activity against Bacilus cereus, Staphylococcus aureus and Candida albicans. In spite of its significant pharmacological potential, little is known about its growth. In light of the influence of seasonality on plant growth, development, and secondary metabolism, the present study evaluated the growth and essential oil content of M. leucocephalus grown and harvested during different... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Semiarid region; Terpenes; Biomass; Endemic medicinal plant; Hyptis leucocephala. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782016000400593 |
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| ALVARENGA,IVAN C.A.; PACHECO,FERNANDA V.; ALVARENGA,AMAURI A.; BERTOLUCCI,SUZAN K.V.; PINTO,JOSÉ EDUARDO B.P.. |
| Abstract Yarrow (Achillea millefolium L., Asteraceae) is an important medicinal plant used worldwide for its medicinal properties such as the analgesic, antioxidant and anti-inflammatory ones. The aim of this study was to evaluate the growth and production of photosynthetic pigments and of volatile constituents of Achillea millefolium L. under different irrigation depths. The treatments were the application of 55, 110, 220, 440 and 880 mm of water for a period of 110 days. Data were submitted to polynomial regression analysis at 5% probability, while the volatile constituents were analyzed by standard deviation. Different irrigation depths provided quadratic growth responses being the highest dry matter production at the depth of 440 mm. The contents of... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Water stress; 1; 8 cineol; Chlorophyll; Terpenes. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652018000703901 |
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| Leite,Germano Leão Demolin; Picanço,Marcelo; Jham,Gulab Newandran; Marquini,Flávio. |
| The objective of this study was to determine the effect of height of leaves in the canopy of plants, leaf organic compounds, concentrations of leaf nitrogen and potassium, leaf trichomes and cristalliferous idioblasts densities on the attack intensity of three tomato (Lycopersicon esculentum Mill. cv. Santa Clara) crops by Tuta absoluta (Meyrick) (Lepidoptera: Gelechiidae) and Liriomyza spp. (Diptera: Agromyzidae), under field conditions. The experimental design was arranged in randomized blocks, with three replications, each being one tomato crop. Analysis of variance and the Tukeys multiple range test (5% significance) were used to test the effect of canopy height, trichome and cristalliferous idioblasts densities on the number of mines produced by T.... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Tomato; Population dynamics; Tomato leafminer; Terpenes. |
| Ano: 2004 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542004000100005 |
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| Festucci-Buselli,Reginaldo A.; Contim,Luis A. S.; Barbosa,Luiz Cláudio A.; Stuart,Jeff J.; Vieira,Roberto F.; Otoni,Wagner C.. |
| The ecdysteroid 20-hydroxyecdysone (20E) is a steroid hormone found in insects and few plants. To analyze its temporal and spatial distribution in Pfaffia glomerata (Amaranthaceae), we selected among 71 accessions, the accession 13 which showed the highest root 20E total quantity (1.48 g/plant root). The 20E was constantly detected in flowers, leaves, stems, and roots, but its percentage was variable throughout its development. The highest 20E percentage was found in flowers (0.82%), roots (0.66%), leaves (0.60%), and stems (0.24%). While stems showed the least variable 20E percentage (0.13% - 0.24%), followed by roots (0.42% - 0.66%), and flowers (0.47% - 0.82%). Leaves showed the greatest 20E percentage variation (0.21% - 0.60%). The stem and leaves 20E... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Pfaffia glomerata (Spreng.) Pedersen; Amaranthaceae; Brazilian ginseng; Phytochemical analysis; Terpenes; Phytoecdysteroid; 20-hydroxyecdysone. |
| Ano: 2008 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1677-04202008000400006 |
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| Amaral,Lúcio de Paula; Tondolo,Juliana Simoni Moraes; Schindler,Bianca; Silva,Daniela Thomas da; Pinheiro,Carlos Garrido; Longhi,Solon Jonas; Mallmann,Carlos Augusto; Heinzmann,Berta Maria. |
| This study evaluated the seasonal influence on the yield and chemical composition of the essential oil (EO) of Nectandra megapotamica. Fresh young (YL) and old leaves (OL) obtained from three trees in each season (Nov/2010 to Sep/2011) collected in Santa Maria-RS were hydrodistilled in triplicate. The chemical composition was determined by the gas chromatography coupled to mass spectrometry (GC-MS) and the yield on dry basis was evaluated by two-way ANOVA (seasons, development stage). Spring (Sp) and summer (Su) showed higher average incomes (0.45 and 0.33%), which occurred when flowering, fruiting, and growth of YL and senescence of OL took place, while autumn (Au) presented the lowest yield (0.25%) during the rustification of OL. The highest yield was... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Lauraceae; Phenology; Variability of volatile oils; Terpenes. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132015000100012 |
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| RIBEIRO, O. D.; NASCIMENTO, W. M. O. do; CRUZ, F. J. R.; GURGEL, E. S. C.. |
| Myrciaria dubia, or camu-camu, is a perennial species that produces fruits of great nutritional interest because they have high levels of antioxidant compounds. The species occurs spontaneously on Amazonian river margins and requires a low amount of nutritional resources. Further, Myrciaria dubia fruits are collected via extractivism and managing this process is still at an incipient stage. The present study investigated the anatomical and histochemical aspects of the seeds of five clones of Myrciaria dubia. The external seed coat has an epidermis comprising a single layer of tabular cells that are rich in phenolic content, pectins, alkaloids, and terpenes. The cotyledons have a uniseriate epidermis, polyhedral parenchyma cells with a high concentration of... |
| Tipo: Artigo de periódico |
Palavras-chave: Camu-camu; Fruit; Cotyledon; Terpenes; Myrtaceace.; Myrciaria Dubia; Phenolic compounds.. |
| Ano: 2021 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1132546 |
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| JEFFREYS,Manoel Feitosa; NUNEZ,Cecilia Veronica. |
| ABSTRACT The Amazon forest is rich in plant species diversity, among them,Piranhea trifoliata stands out, which is popularly known as piranheira, because their fruits are eaten by fish. Their barks are used as bath composition on uterus inflammation and as tea in malaria treatment. This study aimed to fractionate the dichloromethane and dichloromethane phase from methanolic extract of leaves of Piranhea trifoliata. The leaves were dried, grounded and extracted with dichloromethane, methanol and water. The methanol extract was partitioned with dichloromethane and ethyl acetate. The chromatographic fractionation yielded six pentacyclic triterpenoids: friedelan-3-one, 28-hydroxy-friedelan-3-one, 30-hydroxy-friedelan-3-one, lupeol, α- and β-amyrin mixture,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Amazon Forest; NMR analysis; Steroids; Terpenes. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672016000200189 |
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| Registros recuperados: 18 | |
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