Preparation method of tobacco leaf extract

According to the preparation method of the tobacco leaf extract, tobacco leaf fragments are repeatedly and even continuously rubbed, ground and extracted, the extraction degree of effective components in tobacco leaves is high, and the efficiency of preparing the tobacco leaf extract is high. According to the application, the overall efficiency of the device and the method is improved by improving the material exchange efficiency, the rubbing and grinding efficiency and the like by using a preferable device, and the device comprises a cylindrical rotary rubbing and grinding part; the rubbing and grinding conditions of the rubbing and grinding plate can be adjusted; the large-area rubbing and grinding surface and the filtering holes are integrated with the bin wall; and meanwhile, the temperature control part can provide a temperature control function for most devices. 本申请公开了一种烟叶提取物的制备方法，通过对烟叶碎片进行反复乃至连续的搓碾、萃取，对烟叶内的有效成分提取程度较高，制备烟叶提取物效率较高。本申请还通过使用优选的装置，以提高物质交换效率、搓碾效率等实现装置和方法整体效率的提高，包括：圆筒形的旋转式搓碾部；可调整搓碾条件的搓碾板；设置为与