BIXIN POWDER PRODUCTION IN CONICAL SPOUTED BED UNITS |
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| Authors: | M L Passos L S Oliveira A S Franca G Massarani |
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| Affiliation: |
a Department of Chemical Engineering, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
b Chemical Engineering Program/COPPE, Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, Brazil |
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| Abstract: | Recent work has demonstrated that the red carotenoid bixin is easily extracted from Bixa orellana seeds by particle attrition and impact rather than by solvent extraction. This technique may require a previous step for drying seeds at a safe temperature to preserve pigment quality. A spouted bed (SB) with a draft tube is the most appropriate equipment to process both seed drying and bixin extraction at low operational costs. Operational parameters of the SB unit are optimized as a function of the powder production rate. The maximum air inlet temperature for drying the seeds is also specified. A high performance liquid chromatography method has been developed for the semi-quantitative determination of bixin content in the powder produced. Results show that this SB unit can be more competitive than ball mill equipment. |
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| Keywords: | annatto color El60B drying seeds draft lube particle attrition |
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