【摘要】 采用超临界二氧化碳萃取生姜净油,考察了萃取压力和温度对产品收率的影响,以及原料颗粒度、二氧化碳流量与萃取完成时间之间的关系,最优工艺条件为:当压力24 0MPa、温度50℃、生姜颗粒度为60目、二氧化碳流量为20m3·h-1时,萃取2h即可完成操作;所获得的生姜净油收率约2 74%、香气纯正,完全符合国家有关质量标准;并设计了150L中试工业装置,经过4000多小时的试运行证明,该装置用于萃取生姜净油可完全满足工艺要求。更多还原

【Abstract】 Absolute ginger oil was extracted from ginger with supercritical carbon dioxide.The optimum process conditions are extraction pressure 24.0 MPa,temperature 50 ℃,particle size of dry ginger 60 sieve mesh,CO₂ flow rate 20 m³·h^-1and extraction time 2 h.Compared with conventional procedure,this procedure gives higher yield（about 2.74%） and better aroma,quality of the product conforming to the national standard entirely.Based on these data,a semipilot plant was designed and got satisfactory result.更多还原