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Title: Supercritical extraction of sunflower oil: A central composite design for extraction variables
Authors: Rai A.
Mohanty, Bikash
Bhargava R.
Published in: Food Chemistry
Abstract: Abstract Supercritical carbon dioxide (SC-CO2) extraction of sunflower seed for the production of vegetable oil is investigated and compared to conventional methods. The effects of extracting variables, namely pressure, temperatures, particle size, SC-CO2 flow rate and co-solvent, on SC-CO2 extraction are investigated. The maximum yield for sunflower oil is found to be about 54.37 wt%, and is obtained when SC-CO2 extraction is carried out at 80 C, 400 bar, 0.75 mm particle and 10 g/min solvent flow with 5% co-solvent. A central composite design is used to develop the model and also to predict the optimum conditions. At optimum conditions obtained based on desirability function, 80.54 C, 345 bar, 1.00 mm, 10.50 g/min and 7.58% ethanol, SC-CO2 extraction has performed and found that extraction yield dropped by 2.88% from the predicted value. Fatty acid composition of SC-CO2 and hexane extracted oil shows negligible difference and found high source of linoleic acid. © 2015 Elsevier Ltd.
Citation: Food Chemistry, 192: 647-659
Issue Date: 2016
Publisher: Elsevier Ltd
Keywords: Central composite design
Seed oil
Supercritical fluid extraction
ISSN: 3088146
Author Scopus IDs: 56025473600
Author Affiliations: Rai, A., Department of Chemical Engineering, NIT Hamirpur, Hamirpur, Himachal Pradesh 177005, India
Mohanty, B., Department of Chemical Engineering, IIT Roorkee, Roorkee, Uttarakhand 247667, India
Bhargava, R., Department of Chemical Engineering, IIT Roorkee, Roorkee, Uttarakhand 247667, India
Corresponding Author: Rai, A.; Department of Chemical Engineering, NIT HamirpurIndia
Appears in Collections:Journal Publications [CH]

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