Monoterpenes
Mostrando 1-12 de 134 artigos, teses e dissertações.
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1. Mango (Mangifera indica) Aroma Discriminate Cultivars and Ripeness Stages
Mango (Mangifera indica) has many nutritional attributes that stimulate its consumption, such as sweetness, balanced acidity and intense fruity aroma. In this study, it was demonstrated that both the variety and ripening stage have a significant impact on the aroma of mango. The volatile compound profile of “Tommy Atkins”, “palmer”, “espada” and
J. Braz. Chem. Soc.. Publicado em: 2020-07
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2. Easy Epoxidation of Monoterpenes from Common Starting Materials
Epoxidation of monoterpenes, α-pinene, β-pinene, limonene, α-terpinene, and (R)-carvone was carried out by the in situ production of a peroxyacid rather than direct addition of such an expensive and difficult to handle chemical. Previous reports showed use of metal catalysts with high yields, while methodologies without catalysts at high temperature showe
J. Braz. Chem. Soc.. Publicado em: 2020-05
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3. Headspace analysis and characterisation of South African propolis volatile compounds using GCxGC–ToF–MS
ABSTRACT Propolis also known as "bee glue or bee resin" is a resinous mixture of bee saliva or bee wax and exudate from tree trunks and flowers, produced by honeybees. The composition of propolis varies depending on the vegetation the bees can access. It is therefore expected that propolis obtained from various localities may have different chemical profiles
Rev. bras. farmacogn.. Publicado em: 26/08/2019
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4. Chemical characterization of Lavandula dentata L. essential oils grown in Uberaba-MG
RESUMO: Os óleos essenciais das diferentes partes de Lavandula dentata L. (inflorescências e parte aérea sem inflorescência) coletados em Uberaba - MG foram obtidos por hidrodestilação, e sua composição química foi determinada por cromatografia gasosa acoplada a espectrometria de massas e comparada à composição química de óleo essencial de Lava
Cienc. Rural. Publicado em: 15/08/2019
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5. Seasonal and Circadian Study of a Thymol/γ-Terpinene/p-Cymene Type Oil of Ocimum gratissimum L. and Its Antioxidant and Antifungal Effects
Ocimum gratissimum oil is used for various medicinal, food and cosmetic applications due to its high chemical variability. Local businesses have considered the economic exploitation of this plant. A specimen sampled at São Luís, MA, Brazil, with thymol and derivatives oil, was subjected to seasonal and circadian study, and to antifungal and antioxidant ass
J. Braz. Chem. Soc.. Publicado em: 08/04/2019
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6. Exploring the Insecticide and Acaricide Potential of Development Regulators obtained from Restinga vegetation from Brazil
Abstract: As a part of our continuing search for insect and arthropod development regulators from Brazilian restinga vegetation of the Rio de Janeiro State, crude extracts, purified fractions and essential oils were submitted to screening tests seeking for biological activities on the development of the insects Rhodnius prolixus, Dysdercus peruvianus, Oncope
An. Acad. Bras. Ciênc.. Publicado em: 08/04/2019
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7. 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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8. Cytokinins in the in vitro multiplication and analysis of the volatile fraction of Hyptis marrubioides
RESUMO objetivou-se com o presente trabalho avaliar diferentes concentrações de duas citocininas na propagação in vitro da planta medicinal Hyptis marrubioides Epl. e analisar a fração volátil dos compostos. Segmentos nodais de plantas foram inoculados em meio sólido de Murashige e Skoog (MS) com diferentes concentrações de benzilaminopurina (BAP)
Rev. Ciênc. Agron.. Publicado em: 2019-03
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9. Evaluation of the Influence of Extraction Conditions on the Isolation and Identification of Volatile Compounds from Cagaita (Eugenia dysenterica) Using HS-SPME/GC-MS
The objective of this study was to explore the extraction and identification of volatile organic compounds (VOCs) present in cagaita fruit (Eugenia dysenterica). Parameters such as type of extraction fiber, agitation, extraction time and extraction temperature were investigated. Initially, the VOCs were extracted using headspace solid-phase microextraction.
J. Braz. Chem. Soc.. Publicado em: 2019-02
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10. Antimicrobial and antibiofilm activity of the essential oil from dried leaves of Eucalyptus staigeriana
RESUMO: Nos últimos anos, compostos com propriedades biológicas produzidas por plantas têm recebido atenção como alternativa de controle de micro-organismos. Óleos essenciais extraídos de folhas verdes de Eucalyptus sp. têm demonstrado atividades antimicrobianas. No entanto, até o momento não há nenhum relato de atividade antimicrobiana de óleos
Arq. Inst. Biol.. Publicado em: 14/01/2019
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11. Enantiomeric Ratio Changes of Terpenes in Essential Oils from Hybrid Eucalyptus grandis × E. tereticornis and its Pure Species
Some Eucalyptus species produce oils with biological activities and the effect of their interspecific hybridization on the enantiomeric composition of terpenes has not been reported. The enantiomeric excesses of monoterpenes in the essential oil of Eucalyptus grandis × E. tereticornis and its parental taxa were determined by gas chromatography-mass spectrom
J. Braz. Chem. Soc.. Publicado em: 2018-02
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12. Antifungal activities of the essential oil and its fractions rich in sesquiterpenes from leaves of Casearia sylvestris Sw.
ABSTRACT Casearia genus (Salicaceae) is found in sub-tropical and tropical regions of the world and comprises about 160-200 species. It is a medicinal plant used in South America, also known as “guaçatonga”, “erva-de-tiú”, “cafezinho-do-mato”. In Brazil, there are about 48 species and 12 are registered in the State of Rio de Janeiro, including
An. Acad. Bras. Ciênc.. Publicado em: 11/12/2017