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Extraction of lutein from Marigold flower petals - Experimental kinetics and modelling
Maša Hojnik Niderl, Mojca Škerget, Željko Knez, 2008, original scientific article

Abstract: The extraction kinetics behaviour of lutein from Marigold flower petals and simultaneous alkali hydrolysis has been studied. Extraction was carried out by varying following operating conditions: type of organic solvent, temperature, ratio liquid: material, concentration of alkali solution, and particle size of plant material. Experimental extraction curves were analysed with a mathematical model derived from Fick's second law. The extraction of lutein appeared to be governed by slow and fast diffusion processes. Results showed that the intra-particle diffusion was the rate-governing step of the extraction process, and that the chosen model gives very good approximation of experimental data.
Keywords: lutein, marigold, conventional extraction, diffusivity, mass transfer
Published in DKUM: 31.05.2012; Views: 2290; Downloads: 110
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