Potenciais biológicos do óleo essencial de Ocimum basilicum Linn coletada na região Pré-Amazônica do Maranhão

Abstract

<jats:p>Ocimum basilicum Linn, belonging to the Family Lamiaceae, is a species of great economic value, standing out for its medicinal use, being also used for the production of essential oils (EOs) and in the food industry. This study aimed to evaluate the chemical profile, total phenolics, antioxidant activity, toxicity and larvicidal activity of EO extracted from the leaves of O. basilicum L.The EO was extracted by hydrodistillation at 100 °C for 3h. The physicochemical parameters were determined and the chemical characterization obtained by Gas Chromatography coupled to Mass Spectrometry (GC-MS). The total phenolic content was quantified according to Folin-Ciocalteu methodology. Antioxidant quantification was performed using the ABTS and DPPH methods.The toxicity assay was performed using the lethality bioassay with Artemia salina Leach. For larvicidal activity, larvae of Aedes aegypti were submitted to different concentrations of EO solutions. Methyl chavicol and linalool were quantified as the major components in the EO obtained and biological properties were attributed to them.The EO was considered nontoxic by the criterion adopted. Total phenolic content totaled 440,121 mg EAT g-1. The best antioxidant results were obtained for the DPPH radical in IC50. The action of the was observed as larvicidal where the LC50 of 43.84 mg L-1 was determined, being efficient. The results obtained allowed to conclude that the EO studied presented efficient larvicidal activity against the larvae of Aedes aegypti, being important and encouraged its use and application.</jats:p>

Controle alternativo e biológico de patógenos em sementes de melancia

“…O óleo essencial de M. officinalis foi utilizado por Santos et al (2018) [12], como controle de Cladosporium sphaerospermum, onde a concentração fungitóxica mínima foi estabelecida em 128 μg mL -1 e concentração fungicida máxima para o total controle foi de 256 μg mL -1 . Os óleos essenciais de Foeniculum vulgare, Mentha spicata e Ocimum basilicun apresentaram atividade antifúngica, devido seus compostos majoritários carvona, chavicol, eucaliptol, limoneno e linalol [29,30].…”