Chemotypes
Mostrando 1-12 de 71 artigos, teses e dissertações.
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1. Anesthetic potential of the essential oils of Lippia alba and Lippia origanoides in Tambaqui juveniles
RESUMO: O objetivo deste estudo foi investigar o efeito anestésico dos óleos essenciais (EOs) de Lippia alba (quimiotipos citral e linalool - EOLA-C e EOLA-L respectivamente) e Lippia origanoides (quimiotipo carvacrol- EOLO-Ca) em juvenis de tambaqui (Colossoma macropomum). As concentrações testadas dos EOs de L. alba e L. origanoides foram: 25, 50, 100
Cienc. Rural. Publicado em: 13/06/2019
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2. Chemical diversity of the volatiles of Lippia rotundifolia Cham. (Verbenaceae) in Minas Gerais, Brazil
Lippia rotundifolia is an aromatic species, native and endemic to rocky fields, which are isolated by small mountains. It is little known about their chemical composition. Because of that we aimed to study the chemical diversity of volatiles released from rosemary leaves (Lippia rotundifolia Cham.) coming from 11 populations of the Minas Gerais, Brazil. The
An. Acad. Bras. Ciênc.. Publicado em: 21/03/2019
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3. Influence of abiotic environmental factors on the main constituents of the volatile oils of Tithonia diversifolia
ABSTRACT Tithonia diversifolia (Hemsl.) A. Gray, Asteraceae, commonly known as Mexican sunflower, is a wide distributed invasive species encountered around the world. We proposed herein to establish the relationship between different abiotic environmental factors and the variation in the production of volatile compounds in T. diversifolia, during a period of
Rev. bras. farmacogn.. Publicado em: 2018-04
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4. Intraspecific Variation of the Volatile Chemical Composition of Myracrodruon urundeuva Fr. Allem. ("Aroeira-do-Sertão"): Characterization of Six Chemotypes
Myracrodruon urundeuva Fr. Allem. (Anacardiaceae) is the scientific designation of "aroeira-do-sertão", a tree well dispersed through the "Caatinga", the characteristic northeastern Brazil flora. Its trunk bark decoction is used to treat cutaneous affections, urinary and respiratory diseases and as a postpartum aseptic bath. This work reports the analyses o
J. Braz. Chem. Soc.. Publicado em: 2017-05
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5. Physiological responses of Rhamdia quelen (Siluriformes: Heptapteridae) to anesthesia with essential oils from two different chemotypes of Lippia alba
RESUMO O objetivo deste estudo foi avaliar se Lippia alba apresenta diferentes quimiotipos de acordo com a composição química do óleo essencial (OE), considerando local de coleta e se o OE causa diferentes efeitos nos parâmetros sanguíneos e plasmáticos em jundiá, Rhamdia quelen, durante e imediatamente após a anestesia. Os quimiotipos citral (OE-C)
Neotrop. ichthyol.. Publicado em: 23/03/2017
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6. HS-SPME AS AN EFFICIENT TOOL FOR DISCRIMINATING CHEMOTYPES OF Lippia alba (Mill.) N. E. Brown
Lippia alba (Mill.) N. E. Brown (Verbenaceae) is a medicinal plant for which several biological activities are reported, such as sedative, anxiolytic, anti-ulcer, antifungal, antimicrobial, antioxidant, antispasmodic, anti-nociceptive and anti-inflammatory. It is characterized by the production of essential oils which have been used to classify the plant in
Quím. Nova. Publicado em: 2017-01
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7. New Dereplication Method Applied to NMR-Based Metabolomics on Different Fusarium Species Isolated from Rhizosphere of Senna spectabilis
The search for new sources of natural products steadily increased the use of bioinformatic tools that enabled efficient analysis of complex matrices. In this context, dereplication methods emerged as a fast way of identifying known compounds, accelerating the identification of bioactive chemotypes. Although 1H NMR is widely used as an analytical technique, f
J. Braz. Chem. Soc.. Publicado em: 2016-08
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8. In vitro antifungal activity of four chemotypes of Lippia alba (Verbenaceae) essential oils against Alternaria solani (Pleosporeaceae) isolates
Vários compostos naturais voláteis produzidos pelo metabolismo secundário de plantas têm demonstrado ação antimicrobiana comprovada, permitindo a sua utilização no controle de fitopatógenos. Apresentam também, baixo impacto ambiental em comparação aos pesticidas convencionais. Os óleos essenciais apresentam esses compostos que podem ser encontra
An. Acad. Bras. Ciênc.. Publicado em: 31/05/2016
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9. Intraspecific variation of meroditerpenoids in the brown alga Stypopodium zonale guiding the isolation of new compounds
Abstract Intraspecific variation on meroditerpenoids production by the brown marine alga Stypopodium zonale at four different populations along the Brazilian coast was analyzed using Principal Component Analysis over high-performance liquid chromatography profiles from algae extracts. The ordination of the samples by the similarities of their chromatographic
Rev. bras. farmacogn.. Publicado em: 2015-12
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10. CHEMICAL COMPOSITION VARIABILITY IN THE Uncaria tomentosa (cat’s claw) WILD POPULATION
Uncaria tomentosa (cat's claw) is a vine widely distributed throughout the South-American rainforest. Many studies investigating the chemical composition of cat's claw have focused on the pentacyclic (POA) and tetracyclic oxindole alkaloids (TOA), quinovic acid glycosides (QAG), and polyphenols (PPH). Nevertheless, it is still uncertain how environmental fac
Quím. Nova. Publicado em: 2015-03
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11. Chemical diversity and antileishmanial activity of crude extracts of Laurencia complex (Ceramiales, Rhodophyta) from Brazil
Chemical profiles of extracts of four species from Laurencia complex (Ceramiales, Rhodophyta) from different populations collected along Southeast Brazilian coast were assessed by High Performance Liquid Chromatography coupled with a Diode Array Detector in order to observe geographic chemical variability. Aiming to evaluate the impact of chemical diversity
Rev. bras. farmacogn.. Publicado em: 2014-12
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12. Essential oil compositions, antibacterial and antioxidant activities of various populations of Artemisia chamaemelifolia at two phenological stages
Artemisia chamaemelifolia Vill., Asteraceae, has been used as an antimicrobial, antifungal, antiparasitic and antitumor. This study determined the variation in chemical composition, and antibacterial and antioxidant activity of A. chamaemelifolia collected at two phenological stages within five natural habitats in northern Iran.The highest oil yield was obta
Rev. bras. farmacogn.. Publicado em: 2013-12