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Type: Artigo de periódico
Title: New Proposal For Extracting Rosemary Compounds: Process Intensification And Economic Evaluation
Author: Zabot
Giovani L.; Moraes
Moyses N.; Carvalho
Pedro I. N.; Meireles
M. Angela A.
Abstract: This paper brings forward techno-economic results of a study developed with rosemary. Process intensification was applied for obtaining two fractions of bioactive compounds: one fraction rich in volatile oil and other fraction rich in non-volatile extract. Terpenoids as 1,8-cineole and camphor were obtained by supercritical CO2 extraction (SFE-CO2). Afterwards, phenolic compounds as rosmarinic acid and carnosic acid were obtained by pressurized water extraction (PWE). We performed SFE-CO2 and PWE in the same multipurpose equipment without unloading the bed. Extraction yields and composition of each extract fraction were evaluated. We obtained approximately 2.5 wt.% of a fraction rich in volatile oil at 40 degrees C, 30 MPa and solvent mass to feed mass (S/F) ratio of 2.5 g CO2/g rosemary. Likewise, weobtained approximately 18.6 wt.% of a fraction rich in non-volatile extract at continuous temperature increase of 1.1 degrees C/min (from 40 degrees C to 172 degrees C), 10 MPa and S/F ratio of 9.5 g water/g rosemary. We simulated costs of manufacturing of extracts obtained by SFE-CO2 in three productive plants containing 2 vessels of 10 L, 50 Land 100 L The influence of bed geometry was considered into the simulation model, whereas the bed height (HB) to bed diameter (D-B) ratios were: H-B1/D-B1 = 7.1 and H-B2/D-B2 = 2.7. We simulated the productivity of extracts and operating costs for an industrial plant containing 2 vessels of 100 L using the process intensification performed in this paper (SFE-CO2 + PWE). The proposal is promising and can encourage industrial application, because the higher use of the vegetal matrix for obtaining diversified bioactive compounds can reduce 28% of the annual production costs of SFE-CO2 + PWE processes whether comparing with SFE-CO2 process alone. (C) 2015 Elsevier B.V. All rights reserved.
Subject: Supercritical-fluid Extraction
Rosmarinus-officinalis L
Essential Oil
Antioxidant Activity
Manufacturing Cost
Subcritical Water
Green Extraction
Rights: embargo
Identifier DOI: 10.1016/j.indcrop.2015.09.053
Date Issue: 2015
Appears in Collections:Unicamp - Artigos e Outros Documentos

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