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Technological processes were developed for α-carotene and glycerol extraction from Dunaliella sp. at "Las Cumaraguas" Saltworks. Dunaliella sp. microalgae was characterize. It was established the technological flow of the process from laboratory data; energy balances and necessary energetic calculations were done, in order to select and size the required equipment for a pilot plant scale to produce one ton of α-carotene. Two possibilities were evaluated: extraction with organic solvents and extraction with supercritical fluids. The procedure showed that α-carotene and glycerol extractions are possible by means of the presented technological diagram, with 15,4 % of biomass α-carotene yield and 5 % of biomass glycerol yield, for a conventional extraction and a yield of 70 % for α-carotene from pigments and 5 % of biomass glycerol yield, for extraction with supercritical fluid. [ABSTRACT FROM AUTHOR]