Abstract: The present invention relates to the field of food processing and provides a method for preparing olive leaf powder, including the following steps: pulverizing olive leaves under conditions protected from light to obtain crushed olive leaves; immersing the crushed olive leaves in water, and homogenizing, to obtain an olive-leaf homogenate; pre-freezing the olive-leaf homogenate at a temperature below ?16° C. for more than 25 min, and then vacuum freeze-drying to obtain the olive leaf powder; where the vacuum freeze-drying is performed according to the following: the olive-leaf homogenate is heated at a constant rate from the pre-freezing temperature to a drying temperature, and is dried at this temperature for more than 20 min to obtain the olive leaf powder; and the drying temperature is 15-35° C.
Type:
Application
Filed:
May 7, 2019
Publication date:
February 20, 2020
Applicants:
Longnan Xiangyu Olive Development Co., Ltd., Gansu Inspection and Quarantine Science and Technology Research Institute
Inventors:
Xiaoping ZHOU, Bo WANG, Yuhong LIU, Ajing LIU, Huijun WANG, Jianke LI, Feng JIN