کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6671579 | 1427425 | 2011 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Guava (Psidium guajava L.) seed oil obtained with a homemade supercritical fluid extraction system using supercritical CO2 and co-solvent
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موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
مهندسی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
In this work we designed and built a homemade supercritical fluid extraction (HM-SFE) system, in which pure CO2 and CO2 with co-solvents were used. The HM-SFE was made by means of thermal dilatation-contraction (TDC). This HM-SFE system was used for obtaining guava (Psidium guajava L.) seed oil, using supercritical CO2 adding ethanol as co-solvent (CO2 SC/EtOH), extractions were performed at 313Â K and different pressures (10, 20 and 30Â MPa), each one in four stages of 30Â min, the extract with higher yield was subjected to transesterification and high-resolution gas chromatography (HRGC) analysis. The highest extraction yield was obtained at 30Â MPa (17.30% w/w), this yield was higher than one observed in a previous work using SC-CO2, and near to the one obtained by Soxhlet extraction (20.2% w/w). HRGC enabled the identification of components of the derivatized extract as methyl esters of palmitic, oleic, linoleic, and stearic fatty acids. The results obtained with HM-SFE system was compared with a commercial SFE system, obtained very similar results. In this work was possible to construct a low cost and simple manner HM-SFE system which was employed for obtaining guava seed oil, using CO2 SC/EtOH.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: The Journal of Supercritical Fluids - Volume 56, Issue 3, April 2011, Pages 238-242
Journal: The Journal of Supercritical Fluids - Volume 56, Issue 3, April 2011, Pages 238-242
نویسندگان
Henry I. Castro-Vargas, Luis I. RodrÃguez-Varela, Fabián Parada-Alfonso,