The red dates are cored and squashed to get raw material crumbs; the red dates are defective dried red dates;
Add a solvent to the raw product bits to get service A; the solvent is 80% -95% ethanol, preferably 90% ethanol; the mass ratio of the solvent to the raw product particles is 10-18: 1, Ideally 14: 1;
The solution A goes through microwave home heating and extraction; the microwave power is 70W-350W, ideally 140W-280W, more preferably 210W; the microwave heating time is 90 seconds-150 seconds, preferably 100 seconds-140 seconds, more ideally is 120 secs;
Filter the item after microwave home heating extraction to get remedy B;
After service B was concentrated and the solvent was eliminated, distilled water was contributed to obtain option C;
Include flocculant to service C to generate precipitation D; where, the flocculant is a 1% chitosan remedy, and the enhancement amount of the flocculant is 0.006 g/L;
Speed up D is liquified in outright ethanol, filteringed system to eliminate insoluble issue, and after that concentrated to get rid of outright ethanol to obtain oleanolic acid.
The creation likewise offers an oleanolic acid prepared by the approach of the development. The oleanolic acid described in the present invention is extracted from faulty dried out red days by the approach offered by the existing creation.
The here and now innovation embraces microwave-assisted extraction, which can simplify the process, make the procedure operation easy and inexpensive, enhance the removal price of oleanolic acid, keep the useful features of oleanolic acid, and embrace flocculation innovation for splitting up, which is easy to run; In addition, the present invention utilizes malfunctioning dried out red days as raw materials, which expands the detailed utilization technique of defective red dates; the oleanolic acid extract gotten by the present innovation has top quality, high purity, and is very easy to maintain. Therefore, the method for preparing oleanolic acid adopted in today innovation has easy-to-obtain basic materials, high product return, basic and efficient manufacturing procedure, low cost, and is suitable for industrial manufacturing.