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The purpose of this work was to study the purification and isolation (downstream process) of the β-glucan extracted from barley in an ultrasound assisted extraction (UAE) process. The co-extracted starch (average concentration 5.2±0.1g/L) was hydrolyzed by means of α-amylase. The optimization of the hydrolysis length, temperature and enzyme dose led to removal efficiencies higher than 90% (9min hydrolysis...
The supercritical anti-solvent (SAS) process has been used to re-crystallize lutein from ethyl acetate solutions. The influence of several process parameters (pressure, temperature, initial concentration, CO 2 and solution flowrates) on the particle size and morphology have been studied. The results have been compared to these obtained with other carotenoids (β-carotene and lycopene) with...
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