| 摘要 |
The object of the invention is a method of producing plant extracts, characterized in that it comprises a) crushing the plant material, preferably in a homogenizer and demineralized water; b) maceration of homogenized material of step a), preferably for 24 hours in closed periodical extractors with water jacket at the temperature of 20°C; c) fractionation and concentration of the extract of step b), using membrane techniques at the temperature from 20°C to 25°C comprising: - preliminary filtering of solid impurities and colloids by means of a set of filters, preferably with the porosity of μm, 5 μm and 0.3 μm, and with the initial flow rate of 700 l/h, and the final of 100 l/h under the pressure of 0.5 MPa; - ultra-filtration of the permeate after preliminary filtration, preferably by means of semipermeable membranes with the porosity of 0.03 μm under 0.8 MPa pressure; d) carrying out reverse osmosis of the solution obtained in step d), preferably with the initial and final feed flow at 200 l/h and 100 l/h, respectively, and under 2.5 MPa pressure, and plant extract of reduced allergenicity and aw. |
