4 Extraction Method of Lutein Powder from Marigold Ⅱ

3. Ultrasonic-assisted extraction process

Ultrasonic-assisted extraction is to use the cavitation, mechanical, and thermal effects of ultrasonic waves to effectively destroy plant cell walls, so that lutein can quickly and efficiently enter the extraction solvent and improve extraction efficiency.

The optimal extraction process conditions are: n-hexane as the extractant, the ratio of material to liquid (g/mL) is 1:30, the ultrasonic power is 500W, and the ultrasonic time is 40min. Under this process, the extraction amount of lutein ester can reach 15.5 mg/g.

Ultrasonic assistance can improve the dissolution rate of lutein, shorten the extraction time and improve the yield. This method also saves solvent consumption and reduces the effect of high temperature on lutein. After effectively solving the problem of ultrasonic pollution to the environment, ultrasonic-assisted extraction has broad application prospects.

4. Supercritical CO2 extraction process

Using supercritical CO2 to extract lutein from marigold is to ferment, dry and pulverize marigold flowers. The marigold flower extract was extracted with supercritical CO and ethanol as an entrainer. The marigold flower extract is then saponified with potassium hydroxide.

The best process: using marigold dried flower granules as raw material. The extraction temperature was 60 °C, the extraction pressure was 48.6 MPa, and the extraction time was 180 min. Under this process, the yield of marigold yellow pigment can reach 8.41 mg/g.

Supercritical CO2 extraction has the advantages of simple process, low energy consumption, environmental friendliness, safety, non-toxicity, and no destruction of active ingredients.

Summary

Marigold Extract Lutein Powder has both color enhancement and nutritional effects as a natural pigment and has great application potential. Extracting lutein from marigold, China has obvious resource advantages. Qyherb uses the modern technology and process of natural pigment extraction to provide you with high quality and high purity marigold lutein extract.