Preparation method of olive leaf extract

Abstract

The invention discloses a preparation method of an olive leaf extract and the olive leaf extract prepared by the preparation method. An olive leaf extract product of which the oleuropein content is greater than 90% is obtained through the processes of infiltration, enzymatic extraction, separation and drying on olive leaves. The whole method only comprises four steps, the adopted reagents are common non-toxic ingredients, the yield is high, the cost is low, the obtained product can be directly used for preparing medicines, health products and foods, and the method is very suitable for industrial production.

Description

technical field [0001] The invention relates to a preparation method of olive leaf extract, which belongs to the field of natural plant extracts. Background technique [0002] Olive (Oleaeuropaea L.), an evergreen tree belonging to the genus Olea in the family Oleaceae, is a world-renowned woody oil tree species with a cultivation history of more than 4,000 years. Olives are mainly distributed between 45° north latitude and 37° south latitude. The central distribution area is the Mediterranean countries. Greece, Italy, Tunisia, and Spain are the concentrated production areas. Now all countries in the world including China have introduced and cultivated them. Since the introduction of olives in my country in 1964, in the past ten years, with the support of the western development policy, the cultivation of olives has developed rapidly. The construction of bases in Gansu and Sichuan provinces has begun to take shape, and olive oil processing plants have been established. Olive...

AI Technical Summary

Problems solved by technology

However, although a higher oleuropein content is obtained in this method, the cost is relatively high, it is more suitable for scientific research, and it is difficult to achieve large-scale production