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Optimisation of Croton gratissimus Oil Extraction by n-Hexane and Ethyl Acetate Using Response Surface Methodology
- Source :
- Journal of Oleo Science. 67:369-377
- Publication Year :
- 2018
- Publisher :
- Japan Oil Chemists' Society, 2018.
-
Abstract
- The extraction of oil from Croton gratissimus seeds was studied using the three-factor five-level full-factorial central composite rotatable design (CCRD) of the response surface methodology (RSM). The effect of the three factors selected, viz., extraction time, extraction temperature and solvent-to-feed ratio on the extraction oil yield was investigated when n-hexane and ethyl acetate were used as extraction solvents. The coefficients of determination (R2) of the models developed were 0.98 for n-hexane extraction and 0.97 for ethyl acetate extraction. These results demonstrated that the models developed adequately represented the processes they described. From the optimized model, maximum extraction yield obtained from n-hexane and ethyl acetate extraction were 23.88% and 23.25%, respectively. In both cases the extraction temperature and solvent-to-feed ratio were 35°C and 5 mL/g, respectively. In n-hexane extraction the maximum conditions were reached only after 6 min whereas in ethyl acetate extraction it took 20 min to get the maximum extraction oil yield. Oil extraction of Croton gratissimus seeds, in this work, favoured the use of n-hexane as an extraction solvent as it offered higher oil yields at low temperatures and reduced residence times.
- Subjects :
- Chromatography
biology
Chemistry
020209 energy
General Chemical Engineering
Extraction (chemistry)
Ethyl acetate
02 engineering and technology
General Medicine
General Chemistry
biology.organism_classification
Croton
Hexane
Solvent
chemistry.chemical_compound
Yield (chemistry)
0202 electrical engineering, electronic engineering, information engineering
Croton gratissimus
Response surface methodology
Subjects
Details
- ISSN :
- 13473352 and 13458957
- Volume :
- 67
- Database :
- OpenAIRE
- Journal :
- Journal of Oleo Science
- Accession number :
- edsair.doi...........d9dde66f97e95b748df5f7448e2ebbfa