Abstract
At present, there is a great interest in developing functional foods containing natural ingredients able to provide health benefits. Subcritical fluid extraction has become very popular because meets the requirements of an environmentally friendly procedure being also very selective and easy to tune. Accelerated solvent extraction (ASE) is a fast an automatic technique that fulfils the criteria of high yield and efficiency. ASE allows working with any kind of solvents but the highest interest is the use of ASE along with clean solvents, such as water or ethanol (generally recognized as safe, GRAS). The goal of the present chapter is to show the latest results obtained at our laboratory studying the selectivity of subcritical water and ethanol, using ASE at several conditions, to isolate nutraceuticals from natural sources such as rosemary leaves and the microalga Spirulina Platensis.
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