Seasonal variation of essential oil of germplasm of Lippia origanoidesKunth. (Verbenaceae) / Variación estacional de aceite esencial de germoplasma de Lippia origanoidesKunth. (Verbenaceae)

The biological activities attributed to Lippia origanoides Kunth. vary according to the chemical composition of its essential oil, which can be related to weather factors. The aim of this research was the seasonal study of the essential oil chemical composition taken from L. origanoides accessions maintained in germplasm bank in vivo. The essential oil was extracted by hydrodistillation in Clevenger apparatus and identification of the components was done by GC-MS. We have identified 15 compounds of which carvacrol, p-cymene, thymol and methyl-ether-thymol were majority throughout the year for most accessions. In three accessions showed fluctuations in the production of the major compound during the year like the α-pinene, limonene and borneol. The essential oil showed variation in chemical composition throughout the year, the major compound in most of the accessions during the year is carvacrol. In some accessions, there are alterations of the majority component.

Las actividades biológicas atribuidas a Lippia origanoides Kunth. varían según la composición química de su aceite esencial, lo que puede estar relacionado con factores climáticos. El objetivo de esta investigación fue el estudio estacional de la composición química del aceite esencial extraído de accesiones de L. origanoides mantenidas en banco de germoplasma in vivo. El aceite esencial se extrajo mediante hidrodestilación en un aparato Clevenger y la identificación de los componentes se realizó mediante GC-MS. Hemos identificado 15 compuestos de los cuales carvacrol, p-cimeno, timol y metil-éter-timol fueron mayoritarios durante todo el año para la mayoría de las accesiones. En tres accesiones se observaron fluctuaciones en la producción del compuesto principal durante el año como el α-pineno, limoneno y borneol. El aceite esencial mostró variación en la composición química a lo largo del año, el compuesto principal en la mayoría de las accesiones durante el año es el carvacrol. En algunas accesiones, hay alteraciones del componente mayoritario.

Bioestimuladores e seus mecanismos de ação / Biostimulators and their mechanisms of action

No envelhecimento da pele, as alterações intrínsecas, secundárias à perda da regeneração celular, e extrínsecas, causadas pela exposição à radiação ultravioleta, podem ser observadas e alteram a arquitetura tecidual e as propriedades fisiológicas da pele. Tratamentos que restauram a produção de colágeno e estimulam os fibroblastos a sintetizar e organizar a matriz extracelular são críticos para a morfogênese, angiogênese e cicatrização. Potencial utilização de produtos que estimulam a produção de colágeno, que desempenha papel fundamental na matriz extracelular, representa perspectiva promissora para a melhoria da qualidade da pele e das propriedades mecânicas, introduzindo um novo conceito de abordagem terapêutica no tratamento de alterações causadas pelo envelhecimento da pele

In the skin aging process, both intrinsic alterations, secondary to cell regeneration capacity loss resulting from chronological action, and extrinsic alterations, caused by to ultraviolet radiation exposure, can be observed. Treatments that restore collagen production and stimulate fibroblasts to synthesize and organize extracellular matrix are critical for morphogenesis, angiogenesis, and skin healing. Potential uses of products that stimulate collagen production, a component that plays a fundamental role in the extracellular matrix, represents a promising perspective for improving skin quality and its mechanical properties by introducing a new concept of therapeutic approach when treating changes caused by skin aging