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Production of annatto concentrates in spouted beds
Author(s) -
Massarani G.,
Passos M. L.,
Barreto D. W.
Publication year - 1992
Publication title -
the canadian journal of chemical engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.404
H-Index - 67
eISSN - 1939-019X
pISSN - 0008-4034
DOI - 10.1002/cjce.5450700518
Subject(s) - pigment , extraction (chemistry) , pulp and paper industry , materials science , particle size , food science , chromatography , chemistry , engineering , organic chemistry
Annatto is composed of a natural reddish‐yellow pigment, which is commonly used in the food, cosmetic and pharmaceutical industries. This pigment is easily extracted from Bixa orellana seeds by particle impact and attrition rather than by solvent extraction. Seeds must be dried at a safe temperature to preserve the pigment quality. Experiments show that the annatto powder produced in a non‐conventional spouted bed has a high pigment content and is thus suitable for commercial use. A comparative analysis of the bixin extraction in different systems demonstrates that this spouted bed unit can be competitive for commercial applications. Hydrodynamic and drying parameters were studied to improve the powder production rate in this unit.