Sinopse das Lauráceas nos estados de Goiás e Tocantins, Brasil

Moraes, Pedro Luís Rodrigues de

doi:10.1590/s1676-06032005000300018

Cited by 20 publications

(19 citation statements)

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“…13 The only study carried out on P. pyrifolia dealt with volatile compounds from the leaves. 14 As part of our on-going program devoted to phytochemical investigations on Brazilian Lauraceae species, in this work we report the isolation of an ester of the 4-O-E-caffeoylquinic acid (1) and three flavonoids (2-4) from O. corymbosa, an aromatic sesquiterpene (5) and a flavonoid (6) from O. elegans as well as four furofuran lignans (7-10) from P. pyrifolia. This is the first chemical study on the leaves of O. elegans and O. corymbosa as well as the first report of nonvolatile compounds from P. pyrifolia.…”

Section: Introductionmentioning

confidence: 96%

“…4 Ocotea corymbosa is popularly known as canela de corvo or canela fedorenta in Brazil and its wood is employed in the civil construction industry. 5 Only two studies were performed on O. corymbosa; monoterpenes and sesquiterpenes as well as phytosterols were isolated from the unripe fruits 3 and sesquiterpenes with calamenene skeleton were characterized from its bark. 6 No previous studies have been performed on leaves of O. corymbosa.…”

Section: Introductionmentioning

confidence: 99%

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Aromatic compounds from three Brazilian Lauraceae species

Batista¹,

Batista²,

López³

et al. 2010

Quím. Nova

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INTRODUCTIONThe Lauraceae family comprises 52 genera and approximately 3000 species, mostly from tropical and warm subtropical regions of the world.1 Lauraceae species present several groups of secondary metabolites, most of them aromatic, which seem to be relevant for chemotaxonomic classification in Lauraceae. 2The genus Ocotea comprises ca. 350 species. Previous phytochemical studies have revealed the presence of neolignans, benzylisoquinoline alkaloids, phenylpropanoids, flavonoids and sesquiterpenes, 3 besides a variety of volatile components from its essential oils.1 Ocotea elegans is known as canela de ferro or canela preta in Brazil where it is widespread. Despite its huge distribution, the only study performed on O. elegans reports the isolation of neolignans from the stems by using countercurrent chromatography. 4 Ocotea corymbosa is popularly known as canela de corvo or canela fedorenta in Brazil and its wood is employed in the civil construction industry. 5 Only two studies were performed on O. corymbosa; monoterpenes and sesquiterpenes as well as phytosterols were isolated from the unripe fruits 3 and sesquiterpenes with calamenene skeleton were characterized from its bark. Persea is a genus that comprises ca. 200 species, the most well studied of these being P. americana Mill, known as "avocado fruit". Previous phytochemical studies on avocado seeds identified various classes of natural products such as phytosterols, triterpenes, 7 fatty acids with olefinic and acetylenic bonds, 8 alkylfurans, 9 dimers of flavanols, 10 oligomeric proanthocyanidins 11 and glucosylated abscisic acids. 12 Persea pyrifolia is popularly known as maçaranduba and it is frequently employed in the furniture manufacturing industry. 13 The only study carried out on P. pyrifolia dealt with volatile compounds from the leaves. 14 As part of our on-going program devoted to phytochemical investigations on Brazilian Lauraceae species, in this work we report the isolation of an ester of the 4-O-E-caffeoylquinic acid (1) and three flavonoids (2-4) from O. corymbosa, an aromatic sesquiterpene (5) and a flavonoid (6) from O. elegans as well as four furofuran lignans (7-10) from P. pyrifolia. This is the first chemical study on the leaves of O. elegans and O. corymbosa as well as the first report of nonvolatile compounds from P. pyrifolia. EXPERIMENTAL GeneralAnalytical and preparative HPLC separations were performed by using stainless-steel Phenomenex Luna phenyl-hexyl (250 x 4.6 mm and 250 x 22 mm, 5 and 10 mm particle size, respectively) and Phenomenex Luna C-18 (250 x 4.6 mm and 250 x 22 mm, 5 and 10 mm particle size, respectively). Mobile phases for chromatography were prepared from HPLC grade solvents. Methanol and acetonitrile were obtained from J.T. Baker (Phillipsburg, NJ, USA) and Tedia (Fairfield, OH, USA), respectively. Water was purified in-house with a Millipore Milli-Q system (Billerica, MA, USA). The analytical HPLC separations were carried out using a Shimadzu (Kyoto, Japan) LC-10Ai pump system, a Shimadzu SIL-10Ai aut...

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Section: Introductionmentioning

confidence: 96%

Section: Introductionmentioning

confidence: 99%

Aromatic compounds from three Brazilian Lauraceae species

Batista¹,

Batista²,

López³

et al. 2010

Quím. Nova

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“…Species of the genus produce a large amount of essential oils and these plants are widely used in civil construction, furniture manufacturing and cooking practices (Moraes 2005). Due to the economic potential, uncontrolled extractivism has led to the decline of natural populations, placing some species at risk of extinction, such as Ocotea catharinensis Mez, Ocotea langsdorffii (Meisn.)…”

Section: Introductionmentioning

confidence: 99%

“…Barroso (IBAMA 1992). Plants from the genus Ocotea are also used in folk medicine for the treatment of infections, headaches, ulcers, menstrual cramps, snake bites, diarrhea, neuralgia, indigestion and pain in general (Coutinho et al 2006, Moraes 2005, Morais 1998). …”

Section: Introductionmentioning

confidence: 99%

Comparative toxicity of essential oil and blends of selected terpenes of Ocotea species from Pernambuco, Brazil, against Tetranychus urticae Koch

Moraes

Câmara

Silva

2017

An. Acad. Bras. Ciênc.

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Essential oils from the leaves of two species of the genus Ocotea that occur in the Atlantic Forest in the state of Pernambuco, Brazil, were analyzed using gas chromatography-mass spectrometry. The acaricidal activity of these oils as well as 11 selected components and blends were evaluated in fumigation and residual contact tests against the two-spotted spider mite (Tetranychus urticae). Sixty-seven constituents were identified, totaling 97.3 ± 0.3% and 97.8 ± 0.5% of the oils from O. duckei and O. glomerata, respectively. Sesquiterpene was the dominant class. The compounds β-caryophyllene (18.6 ± 0.1%) and aromadendrene (17.3 ± 0.6%) were the main constituents of the oils from O. duckei and O. glomerata, respectively. Acaricidal action varied depending on the method employed, species and chemical nature of the selected constituents. The mites were susceptible to the oils and chemical constituents using the fumigation method. The O. duckei oil was respectively 2.5-fold and 1.5-fold more toxic than the O. glomerata oil using the fumigation and residual contact methods. Among the selected constituents, β-caryophyllene was the most toxic, independently of the method employed. The individual toxicity of the selected compounds and their blends as well as the role of these constituents in the overall toxicity of the essential oils are also discussed.

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“…Esta família tem relevante importância econômica, comportando muitas espécies madeiráveis, bem como produtoras de especiarias, substâncias e óleos essenciais (Reitz et al 1978, Judd et al 2009). Suas espécies são também ecologicamente importantes funcional e estruturalmente (Moraes 2005). As espécies de Lauraceae ocorrem em diferentes associações com outras espécies, em especial na Floresta Ombrófila Mista (Klein 1978).…”

Section: Introductionunclassified

A raridade das espécies arbóreas de Lauraceae no planalto do Estado de Santa Catarina, Brasil

Fontana

Gasper

Sevegnani

2016

Hoehnea

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-(The rarity of tree species of Lauraceae on the plateau of Santa Catarina State, Brazil). The rare species are particularly important from the point of view of conservation ecology and evolutionary biology, and often become the focus for policy decisions. The objective was to evaluate the Lauraceae rarity sampled by the Floristic Forest Inventory of Santa Catarina in Deciduous Forest (DF) and Araucaria Forest (AF). Data were collected in 234 sampling units of 0.40 ha each, recording trees with diameter at breast height ≥ 10 cm. We used Rabinowitzʼs methodology to segregate rare and common species, considering three variables: geographic distribution, habitat specificity, and population size. Of the 37 species, 59.46% were rare and 40.54% were common. 56.76% of the species were eurytopic and 59.46% euryecious. 2.70% of the species were exclusive of DF, 67.57% exclusive of AF, and 29.73% occurred in both. This analysis contributed to the understanding of the rarity of the species in the studied region and it can also contribute to conservation actions for this family on Santa Catarina plateau, since most species are somewhat rare and intense forest fragmentation is the current scenario. Keywords: analysis of rarity, Atlantic Forest, canelas RESUMO -(A raridade das espécies arbóreas de Lauraceae no planalto do Estado de Santa Catarina, Brasil). As espécies raras são particularmente importantes do ponto de vista da conservação, ecologia e biologia evolutiva, além de ser frequentemente o foco para decisões políticas. O objetivo do trabalho foi avaliar a raridade de Lauraceae amostradas pelo Inventário Florístico Florestal de Santa Catarina na Floresta Estacional Decidual e na Floresta Ombrófila Mista. Coletaram-se dados em 234 unidades amostrais com 0,40 ha cada, registrando-se árvores com diâmetro na altura de 1,30m ≥ 10 cm. Foi utilizada a metodologia Rabinowitz para segregar as espécies em raras ou comuns, considerando três variáveis: distribuição geográfica, especificidade por habitat e tamanho populacional. Das 37 espécies, 59,46% apresentaram raridade e 40,54% foram comuns. Classificou-se 56,76% das espécies como euritópica e 59,46% eurioica. Das espécies, 2,70% foram exclusivas da Floresta Estacional Decidual, 67,57% exclusivas da Floresta Ombrófila Mista e 29,73% ocorreram em ambas. Esta análise colaborou para a compreensão da raridade das espécies da região estudada e pode contribuir para ações de conservação dessa família no planalto catarinense, uma vez que a maior parte das espécies é de alguma forma rara e o cenário atual é de intenso processo de fragmentação florestal. Palavras-chave: análise de raridade, Floresta Atlântica, canelas

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Sinopse das Lauráceas nos estados de Goiás e Tocantins, Brasil

Cited by 20 publications

References 8 publications

Aromatic compounds from three Brazilian Lauraceae species

Aromatic compounds from three Brazilian Lauraceae species

Comparative toxicity of essential oil and blends of selected terpenes of Ocotea species from Pernambuco, Brazil, against Tetranychus urticae Koch

A raridade das espécies arbóreas de Lauraceae no planalto do Estado de Santa Catarina, Brasil

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