The influence of particle size on supercritical extraction of dog rose (Rosa canina) seed oil

• Main Authors: Hasanov Jahongir, Zhang Miansong, Ismailov Amankeldi, Zhang Yu, Liu Changheng
• Format: Article
• Language: English
• Published: Elsevier 2019-04-01
• Series: Journal of King Saud University: Engineering Sciences
• Online Access: http://www.sciencedirect.com/science/article/pii/S101836391830062X

The aim of this research was to determine the effect of particle size on dog rose seed oil recovered by the method of Supercritical Fluid Extraction (SFE). Supercritical extraction implemented using dog rose seed particles (d1 < 0.27 mm; 0.27 < d2 < 0.7 mm; 0.7 mm < d3 < 1.4 mm) at 30 MPa, 50 °C, 0.228 L/min flow rate of supercritical carbon dioxide and at the 40 °C separation temperature. The experiments were carried out over the period of 120 min. The results showed that maximum oil obtained at smallest particle sizes (maximal absolute yield-7.63 g from 78.2 g seed). The highest volume of the residue in oil was with particles d1 < 0.27 mm. The GC analyses revealed the oil from dog rose seeds was rich of unsaturated fatty acids. Keywords: Supercritical CO2 extraction, Dog rose, Dog rose seed, Residue content, Fatty acid, Linoleic acid