Chemical composition of the essential oil and hexanic fraction of Lippia and Lantana species

Silva, Pâmela S.; Viccini, Lyderson Facio; Singulani, Júnya de Lacorte; Siqueira, Ezequias Pessoa de; Zani, Carlos L.; Alves, Tânia Maria de Almeida

doi:10.1590/s0102-695x2010005000040

Cited by 13 publications

(5 citation statements)

References 27 publications

(22 reference statements)

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“…These results are in accordance to previous studies with these chemotypes of L. alba that when cultivated at different conditions did not affected the composition of essential oil from leaves (Tavares et al, 2005) showing the same composition of main components of terpenes. Similar studies by our group showed that the quality of essential oil was not affected by dry or wet season in Lippia and Lantana species reinforcing genetic control of essential oil production (Silva et al, 2010). The addition of kinetin, an artificial cytokinin type of plant growth regulator in culture medium increased terpene production (Tavares et al, 2004).…”

Section: Resultssupporting

confidence: 70%

Oil production at different stages of leaf development in Lippia alba

Pandeló¹,

Melo²,

Singulani³

et al. 2012

Rev. bras. farmacogn.

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Abstract:The aim of this work was to analyze terpene oil production and terpene synthases (TPS) gene expression from leaves at different developmental stages of different chemotypes of Lippia alba (Mill.) N.E. Br. ex Britton & P. Wilson, Verbenaceae. Hydro-distilled essential oil were used for chemical analysis and gene expression of three monoterpene synthase genes called LaTPS12, LaTPS23 and LaTPS25 were used for analyses of gene expression associated to oil production. The putative genes were associated to TPS-b gene class. Semi-quantitative PCR and quantitative PCR (qPCR) analysis were used to investigate the expression profile of those three putative genes in different leaf stages and different chemotypes. Additionally, total oil production and gene expression of putative TPS genes cloned from L. alba chemotype linalool were evaluated at different stages of leaf development. The expression level of those three genes was higher when the highest oil production was observed, mainly in young leaves at the fourth nodal segment for all evaluated chemotypes. Total oil production was higher at leaves that had unopened trichomes. We also observed that the 1mM of MeJA treatment increased the gene expression in all chemotypes after 24 h elicitation.

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Section: Resultssupporting

confidence: 70%

Oil production at different stages of leaf development in Lippia alba

Pandeló¹,

Melo²,

Singulani³

et al. 2012

Rev. bras. farmacogn.

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“…These statistical studies have established the chemical correlation between different genotypes, which is essential in the chemotaxonomic classification of aromatic plants [ 22 , 23 ].…”

Section: Resultsmentioning

confidence: 99%

Water Deficit and Seasonality Study on Essential Oil Constituents ofLippia gracilisSchauer Germplasm

Cruz

Pinto

Fontes

et al. 2014

The Scientific World Journal

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The aim of this study was to analyze the chemical composition of the essential oil from leaves of Lippia gracilis genotypes, in the dry and rainy seasons, and with and without irrigation. The extraction of essential oil was realized by hydrodistillation in a Clevenger apparatus. The chemical composition analysis was performed using a GC-MS/FID. The leaves of the L. gracilis genotypes provide essential oil with content between 1.25% and 1.92% in the rainy season and 1.42% and 2.70% in the dry season; when irrigation was used the content was between 1.42% and 2.87%, without irrigation contents were between 1.60% and 3.00%. The chemical composition of L. gracilis showed high levels of terpenes. The major constituent of genotypes LGRA-106 was thymol and carvacrol was the major constituent for the other genotypes. Concentrations showed little variation between seasons, demonstrating the stability of the chemical composition of L. gracilis even with different climatic conditions.

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“…Essential oils can be extracted from different parts of the plants, such as: roots, leaves, rose petals, stems and fruits, as well as condiments. They have properties ranging from antimicrobial, healing, and odorants, among others (Silva et al, 2010). The essential oils with antimicrobial activity by its antiquorum-sensing activity become an important mechanism for the reduction of virulence and pathogenicity of bacteria.…”

Section: Introductionmentioning

confidence: 99%

Properties and controlled release of chitosan microencapsulated limonene oil

Souza

Caldas

Tohidi

et al. 2014

Revista Brasileira de Farmacognosia

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Chitosan Controlled release Essential oil Microcapsule Limonene A B S T R A C T Chitosan microcapsules containing limonene essential oil as active ingredient were prepared by coacervation using three different concentrations of NaOH (0.50, 1.00, 1.45 wt%) and fixed concentrations of chitosan and surfactant of 0.50 wt%. The produced microcapsules were fully characterized in their morphology and chemical composition, and the kinetic release analysis of the active ingredient was evaluated after deposition in a non-woven cellulose fabric. The concentration of 1.00 and 1.45 wt% clearly show the best results in terms of dimension and shape of the microcapsules as well as in the volatility results.However, at the concentration of 1 wt% a higher number of microcapsules were produced as confirmed by FTIR and EDS analysis. Free microcapsules are spherical in size with disperse diameters between 2 and 12 μm. Immobilized microcapsules showed sizes from 4 to 7 μm, a rough surface and loss of spherical shape with pore formation in the chitosan walls. SEM analysis confirms that at higher NaOH concentrations, the larger the size of the microcapsules. This technique shows that by tuning NaOH concentration it is possible to efficiently control the release rate of encapsulated active agents demonstrating great potential as insect repellent for textiles.

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Chemical composition of the essential oil and hexanic fraction of Lippia and Lantana species

Cited by 13 publications

References 27 publications

Oil production at different stages of leaf development in Lippia alba

Oil production at different stages of leaf development in Lippia alba

Water Deficit and Seasonality Study on Essential Oil Constituents ofLippia gracilisSchauer Germplasm

Properties and controlled release of chitosan microencapsulated limonene oil

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