Surfactante obtido de óleo de fritura transesterificado com álcool vanílico para formação de sistema micromulsionado.

Abstract

The environmental impacts resulting from the dumping of waste into the environment, such as oil

waste from frying, generates the need for alternatives for recycling these materials- cousins. Transesterification is a process through which the characteristics of

of this residue, generating a product of a more hydrophilic nature, enabling its use in production of pharmaceutical forms such as emulsions. Therefore, the present study proposed the transesterification of waste frying oils for application in a system microemulsified. Initially, the standardization of the transesterification method was carried out observing the best condition to be applied to the residual frying oil. Of the methods tested, the reflux system showed better separation and formation of the product, being used for the transesterification of residual oil with vanillic alcohol. The production of emulsions was carried out by obtaining the HLE (Hydrophilic-Lipophilic Balance) required by transesterified oil, which was carried out experimentally, with pilot tests being prepared emulsions with different concentrations of water, transesterified oil and a mixture of two surfactants LABRAFIL® M1944CS and Sodium Lauryl Ether Sulfate (LESS) 27%. A transesterification of the residual oil with vanyl alcohol was viable, demonstrating separation of phases and the formation of the intended product. For the production of the microemulsion, it was found that the best results were obtained when the surfactant proportion increased to 87% and the amount of water and oil decreased to 10% and 3%, respectively, obtaining, in the end, a transparent system with total emulsification of the oil phase. Therefore, the impact of this research is evidenced by the feasibility of using residual frying oil in emulsions, as they generate a value-added, sustainable product with different functions.