In vitro toxicity of essential oils from Latin American plants candidates for use in cosmetics

Author(s)

Natalia Mencacci Esteves Pedro

• Document type: Master's Dissertation
• Press: São Paulo.
• Institution: Universidade de São Paulo (USP). Conjunto das Químicas (IQ e FCF) (CQ/DBDCQ)
• Defense date: 2013-07-04

Examining board members

Telma Mary Kaneko; Silvia Berlanga de Moraes Barros; Olga Zazuco Higa

• Advisor: Telma Mary Kaneko

Abstract

Essential oils from plants flora Latin America, have been presented as candidates for use in cosmetic formulations as fragrances, skin permeation enhancers, antioxidants and natural preservatives. The safety of the formulation components should be assessed by validated toxicological tests. The cytotoxicity assays (OECD/GD 129), in vitro phototoxicity (OECD 432), in vitro micronucleus (OECD 487) and intracellular antioxidant activity correspond to alternative methods guided by the 3R\'s principles: Refinament, Reduction and Replacement. In this scenario, the proposed objective was to evaluate the cytotoxicity, phototoxicity in vitro, the genotoxic potential and intracellular antioxidant activity of Minthostachys setosa (Briq.) Epling, Pimenta pseudocaryophyllus (Gomes) Landrum and Drimys brasiliensis Miers essential oils, from Latin American plants candidates for use in cosmetics. The essential oils were extracted by hydrodistillation and its dispersion was evaluated in culture medium. The results obtained in cytotoxicity assays on line BALB/3T3 clone A31 was calculated the IC50. In vitro phototoxicity in BALB/3T3 clone A31 cell line and the micronucleus assay in vitro in the CHO-K1 cell line, it was verify phototoxic and genotoxic potential, respectively. With the exception of essential oil Drimys brasiliensis, the intracellular antioxidant activity was assessed in WS1 cell lines. In conclusion Minthostachys setosa, Pimenta pseudocaryophyllus and Drimys brasiliensis Miers essential oils showed no cytotoxic, phototoxic and genotoxic potential, moreover, the antioxidant activity was expressive for Pimenta pseudocaryophyllus. (AU)

• FAPESP's process: 10/03053-0 - IN VITRO TOXICITY EVALUATION OF ESSENTIAL OILS FROM SOUTH AMERICAN FLORA CANDIDATES FOR USE IN COSMETICS
• Grantee: Natália Mencacci Esteves-Pedro
• Support Opportunities: Scholarships in Brazil - Master