Preparation process for rosemary extract

Abstract

The invention provides a preparation process for rosemary extract. The preparation process comprises the following steps: drying and crushing a rosemary plant; adding the obtained rosemary powder into an extraction tank for extraction of rosemary essential oil; then adding an ethanol solution with a concentration of 65% into the extraction tank for further extraction, delivering extracted material liquid into a concentrator for concentration, recovering ethanol, then carrying out centrifugation, transferring extracted liquid to a resin column, carrying out elution by using an ethanol solution with a concentration of 70%, collecting rosemary material liquid, delivering the rosemary material liquid to the concentrator for concentration, and then carrying out drying so as to obtain 20 to 40% of rosmarinic acid crystal; subjecting residues obtained after centrifugation to elution with petroleum ether so as to remove fat-soluble impurities and carrying out extraction so as to obtain 50 to 95% of dry ursolic acid powder; and successively carrying out separation, extraction and transferring to the resin column so as to obtain 20 to 60% of dry carnosic acid powder. The preparation process can produce a plurality of products like the rosemary essential oil, the rosmarinic acid crystal, the dry ursolic acid powder and the dry carnosic acid powder at the same time.

Description

technical field [0001] The invention relates to the technical field of plant product processing, in particular to a preparation process of rosemary extract. Background technique [0002] Rosemary is a plant of the genus Rosemary in the Lamiaceae family. It has a wide range of uses. In addition to being used as a spice in cooking, it also has bactericidal, anti-oxidant, and refreshing effects in pharmacology. The extracted essential oil can be used to make cologne and add to shampoo It can also remove dandruff, and putting the stems and leaves in the bath water can promote blood circulation and so on. In addition, rosemary is currently recognized as a plant with high antioxidant effect. In the late 1960s and early 1970s, German and Japanese scientists successively isolated components with high-efficiency antioxidant capacity and synergistic effects with organic acids from rosemary. The Institute of Botany, Chinese Academy of Sciences successfully introduced rosemary in 1981...

AI Technical Summary

Problems solved by technology

[0004] At present, the domestic production technology for processing rosemary to extract effective extracts is still immature, and some of the processing methods can only extract one active ingredient. For example, the published patent application No. 201410445684.6 "One A Method for Extracting Rosmarinic Acid from Rosemary", put forward a technical scheme of extracting rosmarinic acid with the help of biological enzyme fermentation, which can only extract a component of rosmarinic acid from rosemary, not It can effectively extract other active ingredients at the same time, resulting in the loss and waste of other active ingredients in rosemary