کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5479915 | 1522088 | 2017 | 8 صفحه PDF | دانلود رایگان |
This work is devoted to valorize olive kernel; a by-product produced during olive oil extraction process. For this purpose, aqueous liquid solid extraction (LSE), mechanical expression (ME), supercritical CO2 (SC-CO2) and gas assisted mechanical expression (GAME), processes were compared when applied separately or consequently (ME + GAME), in terms of total phenolic compound (TPC) and oil recovery yields. Results showed that although the high extraction yields of TPC using LSE (61.4 ± 1.3%), the extraction process is economically not viable. However, it was demonstrated that applying ME (1 h at 30 MPa) followed by GAME (1 h at 30 MPa ME and 10 MPa SC-CO2 pressures) allowed recovering extracts enriched with TPC (â50% yield) and oil (â80% yield), respectively. Recovered phenolic compounds and oil were then identified using liquid and gas chromatography - mass spectrometry, showing no degradation and high oil quality compared to commercial virgin oil.
Journal: Journal of Cleaner Production - Volume 166, 10 November 2017, Pages 387-394