Essential Oils of Some Amazonian Labiatae, I: Genus Hyptis

Luz, Arnaldo Iran R.; Zoghbi, M.G.B.; Ramos, Lourdes; Maia, José Guilherme S.; Silva, M. L. da

doi:10.1021/np50034a044

Cited by 50 publications

(21 citation statements)

References 4 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…47 The main constituent of essential oils found in several species of Hyptis (Lamiaceae) was the 1,8-cineole (24-37%). [53][54][55][56] The salva-domarajó (H. crenata Pohl ex Benth.) is a plant endemic to the natural fields of the island of Marajo and is used as a diaphoretic, tonic and stimulating.…”

Section: Results and Discussion The Inventory Of The Aromatic Floramentioning

confidence: 99%

Database of the Amazon aromatic plants and their essential oils

Maia¹,

Andrade²

2009

Quím. Nova

107

View full text Add to dashboard Cite

The aromatic flora of the Amazon has been inventoried for 30 years. In this sense, were made over 500 field trips to collect over 2500 plants and to obtain more than 2000 essential oils and aroma concentrates, all of them submitted to GC and GC-MS. This work led to the creation of a database for the aromatic plants of the Amazon, which catalogs general information about 1250 specimens. The database has allowed the publication of the chemical composition of the oils and aromas of more than 350 species, associated with a larger number of chemical types. The essential oils of many species offer optimum conditions for economic exploitation and use in national and international market of fragrances, cosmetics, agricultural and household pesticides

show abstract

Section: Results and Discussion The Inventory Of The Aromatic Floramentioning

confidence: 99%

Database of the Amazon aromatic plants and their essential oils

Maia¹,

Andrade²

2009

Quím. Nova

107

View full text Add to dashboard Cite

show abstract

“…The Hyptis genus is a member of the Lamiaceae family and includes about 775 species (McNeil et al, 2011), which are mainly grown in the tropical to subtropical area of American and the West Indies. Several flourishes around the tropics in the world (Azevedo et al, 2001(Azevedo et al, , 2002Luz et al, 1984;Oliveira et al, 2005). There are four species, Hyptis suaveolens, Hyptis rhomboidea, Hyptis brevipes and Hyptis.…”

Section: Introductionmentioning

confidence: 99%

The essential oils chemical compositions and antimicrobial, antioxidant activities and toxicity of threeHyptisspecies

Huang

Jiang

et al. 2013

Pharmaceutical Biology

View full text Add to dashboard Cite

Context: Hyptis suaveolens (Linn.) Poit., Hyptis rhomboidea Mart. et Gal., and Hyptis brevipes Poit., are three species of Hyptis Jacq. (Lamiaceae). Hyptis suaveolens is used for the treatment of fever, headache, gastrointestinal bloating and rheumatism in the traditional folk medicine; Hyptis rhomboidea for hepatitis, ulcer and swollen poison; and Hyptis brevipes for asthma and malaria. Objective: To characterize chemical compositions of the oils from three Hyptis species and evaluate their potential antimicrobial, radical scavenging activities and toxicities against brine shrimp. Materials and methods: The oils were obtained by hydrodistillation, and their chemical compositions were investigated by gas chromatography-mass spectrometry (GC-MS). Minimum inhibitory concentrations (MICs) were determined using the tube double-dilution technique. The antioxidant activities were investigated using the 1,1-diphenyl-2-picrylhydrazyl (DPPH) assay and toxicities by the brine shrimp bioassay. Results: Forty-seven, 33 and 28 constituents of oils isolated, respectively, from H. suaveolens, H. rhomboidea and H. brevipes were identified. Among the essential oils, the strongest antioxidant activity was exhibited by H. brevipes with an SC 50 value of 2.019 AE 0.25 mg mL À1. The H. brevipes oil exhibited the strongest antimicrobial activity (3.125-6.25 mg mL À1) on pathogens employed in the assay. They all showed significant toxicities with median lethal concentration (LC 50 ) values of 62.2 AE 3.07 mg mL À1, 65.9 AE 6.55 mg mL À1 and 60.8 AE 9.04 mg mL À1, respectively. Discussion and conclusions: The three Hyptis species oils possess strong antimicrobial activities and toxicities. Hyptis rhomboidea and H. brevipes showed considerable antioxidant activity compared to the positive control.

show abstract

“…Concerning the Hyptis species occurring in the Brazilian Amazon we previously analyzed the essential oil composition of H. suaveolens, H. mutabilis and H. goyazensis (Gottlieb et al, 1981;Luz et al, 1984 and1989;Andrade et al, 2003). The essential oil of another specimen of H. crenata collected in the Brazilian Pantanal was first reported (Scramin et al, 2000).…”

Section: Introductionmentioning

confidence: 99%

Antioxidant capacity and biological activity of essential oil and methanol extract of Hyptis crenata Pohl ex Benth

Rebelo¹,

Silva²,

Andrade³

et al. 2009

Rev. bras. farmacogn.

View full text Add to dashboard Cite

RESUMO: "Capacidade antioxidante e atividade biológica do óleo essencial e extrato metanólico de Hyptis crenata Pohl ex Benth". O óleo essencial das folhas e ramos finos frescos e secos de Hyptis crenata forneceu os seguintes rendimentos, 1,4% e 0,9%. Os constituintes voláteis principais foram a-pineno (22,0%; 19,5%), 1,8-cineol (17,6%; 23,2%), b-pineno (17,0%: 13,8%), cânfora (4,7%; 11,6%), limoneno (5,4%; 4,4%) e g-terpineno (3,5%; 2,4%), totalizando mais de 70% nos óleos. A atividade de seqüestro do radical DPPH para o extrato metanólico (CE 50 , 16,7 ± 0,4 mg/mL) foi comparável ao do BHT (19,8 ± 0,5 mg/mL) mostrando uma significante atividade antioxidante. Os óleos apresentaram baixa atividade. O teor de fenólicos totais (TP, 373,0 ± 15,9 mg GAE/g) e equivalente trolox (TEAC, 226,8 ± 0,5 mg TE/g) confirmaram a atividade antioxidante do extrato metanólico, que pode ser atribuída à presença de compostos fenólicos polares. No teste com larvas de camarão as concentrações letais para o óleo e extrato metanólico foram 6,7 ± 0,2 mg/mL e 13,0 ± 3,7 mg/mL, respectivamente, fornecendo importante evidência de suas atividade biológicas.Unitermos: Hyptis crenata, Lamiaceae, "salva-do-marajó", óleo essencial, atividade antioxidante, teor de fenólicos totais, citotoxidade. ABSTRACT:The essential oils of fresh and dried leaves and fine stems of Hyptis crenata furnished the following yields: 1.4% and 0.9%. The main volatile constituents were a-pinene (22.0%; 19.5%), 1,8-cineole (17.6%; 23.2%), b-pinene (17.0%; 13.8%), camphor (4.7%; 11.6%), limonene (5.4%; 4.4%) and g-terpinene (3.5%; 2.4%), totalizing more than 70% in the oils. The DPPH radical scavenging activity (EC 50 , 16.7 ± 0.4 mg/mL) of the methanol extract was comparable to BHT (19.8 ± 0.5 mg/mL) showing a significant antioxidant activity. The oils showed low activities. The amount of total phenolics (TP, 373.0 ± 15.9 mg GAE/g) and trolox equivalent (TEAC, 226.8 ± 0.5 mg TE/g) confirmed the antioxidant activity of the methanol extract that can be attributed to the presence of polar phenolic compounds. In the brine shrimp bioassay the lethal concentrations (LC 50 ) for the oil and methanol extract were 6.7 ± 0.2 mg/mL and 13.0 ± 3.7 mg/mL, respectively, providing important evidence of their biological activities.

show abstract

Essential Oils of Some Amazonian Labiatae, I: Genus Hyptis

Cited by 50 publications

References 4 publications

Database of the Amazon aromatic plants and their essential oils

Database of the Amazon aromatic plants and their essential oils

The essential oils chemical compositions and antimicrobial, antioxidant activities and toxicity of threeHyptisspecies

Antioxidant capacity and biological activity of essential oil and methanol extract of Hyptis crenata Pohl ex Benth

Contact Info

Product

Resources

About