Aproveitamento de resíduo de vitivinicultura a partir da extração e aplicação do óleo de semente de uva

Abstract

The vitiviniculture is expressive in the south region of Brazil, and has gained field in all corners of the country. This activity result in an amount of residue of an average of 210 thousand tons per year, and of these are reused only 3%. The residues originating from the processing of the grape have slow biodegradability, besides occupy large volume when destined to the landfills. The objective of this work was the use of the grapes seeds discarded from the vitiviniculture for the production of a grape seed oil, applying it within some area of chemical engineering. The oil was extracted from a soxhlet adaptation to semi-pilot scale using ethanol, a green solvent. This oil presented low quality, with a high acidity of 2% expressed as oleic acid and peroxide index of 12.91% meq O2 kg-1, in addition to a low extraction yield of 6%. From the characterization results, with the oil extracted, two moisturizers were produced, one with the complete use of all extracted compounds from grape seeds and the other with only the grape seed oil.