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首页> 外文会议>Proceedings of the 12th international drying symposium IDS2000 >THE CHOICE OF DRYING CONDITIONS IN THE PROCESSING OF ORANGEPEEL TO PRODUCE ORANGE OIL BY SUPERCRITICAL FLUID EXTRACTIO
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THE CHOICE OF DRYING CONDITIONS IN THE PROCESSING OF ORANGEPEEL TO PRODUCE ORANGE OIL BY SUPERCRITICAL FLUID EXTRACTIO

机译：超临界流体萃取法制备橙油生产橙油的干燥条件的选择

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摘要

The traditional technique of recovering the oil from citrus peel is by expression. Anrnalternative method is by Supercritical Fluid Extraction (SFE), but the use of this type ofrnprocess requires the peel to be dried and milled prior to charging to the extractor. Arnprogramme of work has therefore been carried out to determine the best means ofrndrying. Thus the effect of different means of size reduction namely cutting intornquarters, dicing and shredding to different degrees, on the drying process have beenrninvestigated using a tray drier. The experiments showed that drying times to reach arnmoisture content of 10% w.b. reduced from 50 hrs when drying the unmodified halfrnpeels down to 5.6 hrs for finely shredded material. Drying temperature as well as thernintroduction of a resting period also had significant effects. Oil yields using a smallrnscale Supercritical Fluid Extraction unit using carbon dioxide were measured to bern1.56% when extracting from the milled product of dried half peels, but only 0.75 wt.%rnfrom dried finely, shredded material. The investigation has indicated that the preferredrnprocess should dry the half peels (possibly using solar driers), followed by milling andrnSupercritical Fluid Extraction.
机译：从柑桔皮中回收油的传统技术是通过表达。替代方法是通过超临界流体萃取（SFE）进行的，但是使用这种类型的萃取方法需要先将果皮干燥并磨碎，然后再装入萃取器中。因此，已经进行了工作计划以确定最佳的干燥方法。因此，已经使用托盘干燥机研究了不同尺寸减小手段，即切成四分之三，切成丁和切碎对干燥过程的影响。实验表明，干燥时间达到含水量10％w.b。从将未改性半果皮干燥时的50小时减少到细碎材料的5.6小时。干燥温度以及休息时间的引入也有显着影响。当从干燥的半果皮的研磨产物中提取时，使用使用二氧化碳的小规模超临界流体提取单元测得的油产率为1.56％，但是从干燥的细碎的材料中仅提取0.75重量％。研究表明，首选工艺应将半果皮干燥（可能使用太阳能干燥器），然后进行研磨和超临界流体萃取。

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