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Sangwan, Neelam S.; Farooqi, A. H. A.; Shabih, F.; Sangwan, Rajender Singh

doi:10.1023/a:1013386921596

Cited by 649 publications

(165 citation statements)

References 72 publications

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“…É possível, portanto, inferir que o regime de chuvas pode influir na concentração de alguns componentes e não na de outros. No entanto, as variações observadas nos resultados obtidos para cada amostra são indicativos de que uma rede complexa de fatores e/ou condições ambientais, tais como temperatura, umidade, duração e intensidade das irradiações solares, interações com polinizadores e predadores, [17][18][19] estão influenciando a composição do óleo e não apenas do regime de chuvas. …”

Section: Conclusãounclassified

Variação sazonal da composição do óleo essencial de Myrcia salzmannii Berg. (Myrtaceae)

Cerqueira¹,

Marques²,

Martins³

et al. 2009

Quím. Nova

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Recebido em 19/8/08; aceito em 28/1/09; publicado na web em 3/7/09 SEASONAL VARIATION OF THE COMPOSITION OF ESSENTIAL OIL FROM Myrcia salzmannii Berg. (Myrtaceae). This work report the seasonal variation of composition of the volatile oils from leaves and from flowers of Myrcia salzmannii harvested in the sand dunes of Salvador, Bahia, northeastern region of Brazil in the years 2001 and 2003. The oils were analyzed by GC-FID and GC-MS being identified 49 components. Nine essential oil samples of leaves collected on different months and years and one sample of flowers were analyzed. β-Caryophyllene and α-humulene were the only compounds present in all of the samples being the first the majority compound.Keywords: Myrcia salzmannii; essential oil; terpenes. INTRODUÇÃOAs plantas aromáticas têm sido utilizadas desde a Antigüidade como antissépticos e agentes anti-infecciosos, para dar aroma a perfumes e cosméticos e como flavorizantes em alimentos e bebidas. Suas propriedades biológicas estão diretamente relacionadas com a composição química, a qual pode ser afetada pelas variações ambiental, geográfica, sazonal e circadiana.As espécies da família Myrtaceae são particularmente ricas em óleos essenciais. Essa família é constituída de 140 gêneros e aproximadamente 3000 espécies 1 com dois principais centros de desenvolvimento, a América tropical e a Austrália, embora ocorram em outras regiões no mundo.2 O gênero Myrcia é um dos maiores da família com cerca de 300 espécies e muito bem representado em todo o território brasileiro. Espécies desse gênero têm sido utilizadas na medicina popular como adstringentes, diuréticos, contra o Diabetes mellitus, para estancar hemorragias e no tratamento de hipertensão e úlceras. 3Relativamente ao seu grande número, são poucas as publicações acerca da química das espécies do gênero Myrcia. Em M. citriofolia, foi relatada a ocorrência de eucaliptina, uma flavona C-metilada.4 O extrato metanólico de M. multiflora mostrou potente atividade inibitória da aldose redutase, 5,6 uma enzima que está relacionada com algumas complicações do Diabetes mellitus. 7,8 O fracionamento desse extrato levou ao isolamento de flavanonas glicosiladas (myrciacitrinas I e II) e acetofenonas glicosiladas (myrciafenonas A e B). Os óleos essenciais de 17 espécies do gênero já foram estudados e ficou demonstrado que os sesquiterpenos foram predominantes em todos eles exceto em M. myrtifolia, 9 em que houve uma larga predominância de monoterpenos e M. acuminatissima e M. bombycina, nos quais o conteúdo de monoterpenos foi apenas ligeiramente maior que o de sesquiterpenos.

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Section: Conclusãounclassified

Variação sazonal da composição do óleo essencial de Myrcia salzmannii Berg. (Myrtaceae)

Cerqueira¹,

Marques²,

Martins³

et al. 2009

Quím. Nova

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“…Fresh or dried leaves of Mentha species are used as condiments, and the essential oils (EOs) of these plants are used as flavorings for foods and beverages, as fragrances, and as fungicides or insecticides in many pharmaceutical and industrial products [1,2]. Menthol, a crystalline compound obtained from peppermint oil, has a pleasant flavor and aroma and a cooling anesthetic effect, and is used in confectionery, pharmaceutical, oral health care, cosmetic, tea, and tobacco products.…”

Section: Introductionmentioning

confidence: 99%

Effects of Growth Regulators on Biomass and the Production of Secondary Metabolites in Peppermint (<i>Mentha pi-perita</i>) Micropropagated <i>in Vitro</i>

Santoro¹,

Nievas²,

Zygadlo³

et al. 2013

AJPS

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The effects of plant growth regulators on peppermint (Mentha piperita) cultured in vitro were studied for the purpose of maximizing growth and essential oil production in micropropagated plants. The basal medium was experimentally supplemented with the auxin 4-indol-3-ylbutyric acid (IBA) and the cytokinin 6-benzylaminopurine (BAP) individually and in combination. Supplementation with BAP alone resulted in the highest values for root length, root dry weight, shoot length, and numbers of nodes, leaves, and ramifications. Treatment with IBA alone or with IBA + BAP resulted in a ~50% increase in shoot fresh weight. The production of secondary metabolites was affected only by the addition of cytokinin, which resulted in a ~40% increase in the total yield of essential oils (EOs). Similar trends were observed for yields of the major EO components (menthone, menthol, pulegone, and menthofuran). Our findings demonstrate that the application of growth regulators increases EO production and biomass concomitantly in an herbaceous species rich in commercially valuable terpenes.

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“…Biochemical and metabolic processes comprise the molecular mechanisms that regulate carbon flow through the biosynthetic routes, as well as the turnover rate of the relevant terpenoid and/or phenylpropanoid metabolism. The genotype-related nature and magnitude of these interactive responses form the genetic controls 36 .…”

Section: Resultsmentioning

confidence: 99%

“…Generally, these compounds determine the biological properties of the oils 25 . The chemical composition of plants can be subject to quantitative and qualitative variation, however biological activity is similarly subject to variation 36,37,38 . In this study A. spinosa was collected in the same place but at different times and years, however, in the same period spring summer of southern hemisphere.…”

Section: Resultsmentioning

confidence: 99%

Chemical Composition and Antibacterial Activity of Essential Oils From Azorella Spinosa (Apiaceae) Against Wild Phytopathogenic Bacteria

Jara-Bermeo

Peñailillo

San-Martı́n

et al. 2016

J. Chil. Chem. Soc.

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The aim of the present investigation was to appraise variation in the chemical composition and antimicrobial activity against phytopatogenic bacterial of essential oils from Azorella spinosa. Three samples of A. spinosa were collected in different date in the same area. The essential oils were obtained for hydrodestillation using a Clevenger-type apparatus. The chemical composition of essential oils were analysed using Gas chromatography-mass spectrometry showed variation in the yield and composition, the main detected compounds were monoterpenes such as limonene (10.66-12.30%), tricyclene (10.81-16.99%) and sabinene (9.10-11.49%), the most abundant sesquiterpene was γ-gurjenene (5.48-8.47%). The biological activity of essential oils from A. spinosa against wild phytopatogenic microorganisms showed selectivity over Pseudomonas syringae. This is the first report of the essential oil composition of A. spinosa, and confirms that natural products obtained from aromatic plants represent an important source of bioactive molecules that could be used as new alternatives for the treatment of phytopatogenic bacteria infections.

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Cited by 649 publications

References 72 publications

Variação sazonal da composição do óleo essencial de Myrcia salzmannii Berg. (Myrtaceae)

Variação sazonal da composição do óleo essencial de Myrcia salzmannii Berg. (Myrtaceae)

Effects of Growth Regulators on Biomass and the Production of Secondary Metabolites in Peppermint (<i>Mentha pi-perita</i>) Micropropagated <i>in Vitro</i>

Chemical Composition and Antibacterial Activity of Essential Oils From Azorella Spinosa (Apiaceae) Against Wild Phytopathogenic Bacteria

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Untitled

Cited by 649 publications

References 72 publications

Variação sazonal da composição do óleo essencial de Myrcia salzmannii Berg. (Myrtaceae)

Variação sazonal da composição do óleo essencial de Myrcia salzmannii Berg. (Myrtaceae)

Effects of Growth Regulators on Biomass and the Production of Secondary Metabolites in Peppermint (&lt;i&gt;Mentha pi-perita&lt;/i&gt;) Micropropagated &lt;i&gt;in Vitro&lt;/i&gt;

Chemical Composition and Antibacterial Activity of Essential Oils From Azorella Spinosa (Apiaceae) Against Wild Phytopathogenic Bacteria

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Effects of Growth Regulators on Biomass and the Production of Secondary Metabolites in Peppermint (<i>Mentha pi-perita</i>) Micropropagated <i>in Vitro</i>