Abstract
Instant controlled pressure drop process (DIC) was used to texture rapeseeds in order to intensify oil extraction performances of both pressing and solvent extraction processes. Solvent extraction from both DIC-textured and non-treated raw material RM seeds was achieved with n-hexane using separately accelerated solvent extraction (ASE) and dynamic maceration (DM). ASE allowed quantifying the extraction yields while the extraction kinetics issued from DM experimental data was studied through coupled washing/diffusion CWD phenomenological model. ASE oil contents were 622.5 ± 0.5 and 664.4 ± 0.5 g oil/kg dry dry basis ddb for untreated and DIC-textured seeds, respectively. In terms of kinetics, 45-min DM of DIC-treated seeds implied higher yields than 8-h DM of RM (467.8 ± 0.5 against 435.6 ± 0.5 g oil/kg ddb). Moreover, pressing oil yields reached 553.5 ± 0.5 against 490 ± 0.5 g oil/kg ddb for DIC and RM seeds, respectively. Besides, optimized DIC treatment allowed obtaining preservation of lipid fatty acid profiles.
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Bouallegue, K., Allaf, T., Ben Younes, R. et al. Texturing and Instant Cooling of Rapeseed as Pretreatment Prior to Pressing and Solvent Extraction of Oil. Food Bioprocess Technol 9, 1521–1534 (2016). https://doi.org/10.1007/s11947-016-1734-x
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DOI: https://doi.org/10.1007/s11947-016-1734-x