Chemical composition and antioxidant activity of essential oils isolated from Colombian plants

Abstract

RESUMO: "Composição química e atividade antioxidante de óleos essenciais isolados de plantas da Colombia." Treze óleos essenciais de plantas da Colômbia, obtido por hidrodestilação ou hidrodestilação assistida por microondas, da planta inteira, caule, folhas e flores, foram analisados por técnicas de espectrometria de massa acoplada a cromatografia gasosa. ABSTRACT: Thirteen essential oils from Colombian plants, obtained by hydrodistillation or microwave-assisted hydrodistillation of total plant, stem, leaves, and flowers were analyzed by gas-chromatography-mass spectrometry techniques. Cytotoxicity of essential oils was assessed using the brine shrimp assay, and their antioxidant activities measuring their effects on the levels of thiobarbituric acid reactive substances on rat liver microsomes induced by Fe 2+ /H 2 O 2 . Five oils showed high cytotoxicity (LC50<10 µg/mL) on the brine shrimp assay. The antioxidant activity of the essential oil from Ocotea sp., Tagetes lucida and Lippia alba (geranial chemotype) showed the lowest mean effective concentrations (EC50), with values of 31.1, 37.9 and 94.9 µg/mL, respectively. The main components for these oils were α-pinene (42%), estragole (95.7%) and geranial (30.4%), respectively. Elettaria cardamomum and Lippia alba (carvone chemotype, Tolima) presented moderate antioxidant activities with EC50 values of 130.5 and 174.4 µg/mL, respectively. Essential oils from Minthostachys mollis, Lippia alba (carvone chemotype, Cundinamarca), and Piper sanctifelisis did not show antioxidant activity (CE50>1000 µg/mL).

Effect of Packaging Materials and Essential Oils on the Storage Stability of Burfi, a Dairy Dessert

“…Singh et al [39] reported the composition of Ginger Essential Oil (GEO) as geranial (25.9%), a-zingiberene (9.5%), a-farnesene (7.6%), neral (7.6%), ar-curcumene (6.6%). Olivero-Verbel et al [24] stated the main components in Cardamom Essential Oil (CEO) were 1,8-cineol (29.7%) and α-terpineol acetate (26.1%). Presence of these phenolic compounds could have resulted into higher anti-oxidative activity and subsequently lower oxidation in herbal burfi samples.…”

Tagetes lucida

“…The ethanol and aqueous extracts of T. lucida were found to be cytotoxic (ED 50 < 20 μg/ml) against T47D cell line (human breast cancer) and the aqueous extract from T. lucida cytotoxic to HeLa (human cervix cancer) cell line (Vega-Avila et al 2009 ). T. lucida (aerial parts) essential oil showed cytotoxicity (LC 50 24 hours = 22.4 μg/ml, LC 50 48 hours = 17.63 μg/ml) on the brine shrimp Artemia franciscana assay (Olivero-Verbel et al 2010 ).…”

Comparative toxicity of essential oil and blends of selected terpenes of Ocotea species from Pernambuco, Brazil, against Tetranychus urticae Koch

“…These oils are extracted from different parts of the plant and the main chemical classes found are monoterpenes (Olivero-Verbel et al 2010), sesquiterpenes, diterpenes (Setzer et al 2006, Takaku et al 2007, Yamaguchi et al 2013) and phenylpropanoids (Oltramari et al 2004). Studies on the biological properties of these essential oils reveal a broad spectrum of activity, including antimicrobial (Leporatti et al 2014, Farago et al 2010, anti-inflammatory, cytotoxic, antioxidant (Destryana et al 2014, Chaverri et al 2011) and molluscicidal (Coutinho et al 2007) properties, including insecticidal action against arthropods of medicinal interest, such as Aedes aegypti (Menut et al 2002), and agricultural interest, such as Sitophilus zeamais (Mossi et al 2013).…”