Defatting of annatto seeds using supercritical carbon dioxide as a pretreatment for the production of bixin: Experimental, modeling and economic evaluation of the process

Author(s)

Albuquerque, Carolina L. C. ; Meireles, M. Angela A.

• Document type: Journal article
• Source: JOURNAL OF SUPERCRITICAL FLUIDS; v. 66, p. 10-pg., 2012-06-01.

Abstract

In this work, supercritical CO2 extraction for defatting of annatto seeds was studied; the objective was to obtain an extract rich in tocotrienols and the defatted rich-bixin seeds. The process conditions were selected from global yield isotherms assays performed at 313 and 333 K, and 20,31, and 40 MPa; the ratio of solvent mass (S) to feed mass (F) was 35. For this S/F the highest extraction yield was 22 mg of extract/g dried seeds obtained at 333 K and 40 MPa. At these conditions a kinetic experiment was done to estimate the required parameters needed to estimate the cost of manufacturing (COM). COM was estimated using a commercial simulator; the model SFE plant had two extractor vessels in order to simulate continuous operation. A pilot plant size unit and two industrial size units were considered. The COM decreased from 124.58 to 109.27 US$/kg of extract as the extraction vessels capacities increased from 0.1 and 0.5 m(3); for the pilot plant with 2 vessels of 0.005 m(3) the COM was 300.00 US$/kg of extract. (c) 2012 Elsevier B.V. All rights reserved. (AU)

• FAPESP's process: 09/17234-9 - Obtaining anthocyanins, carotenoids, flavonoids, volatile oils, and tocotrienols by supercritical technology: process parameters and chemical characterization of extracts
• Grantee: Maria Angela de Almeida Meireles Petenate
• Support Opportunities: Regular Research Grants