Supercritical CO2 extraction of Antarctic krill oil
The supercritical CO2 extraction method is a new technology developed in recent years. It utilizes the characteristics of CO2 in a supercritical state, and can efficiently and cleanly separate and extract active ingredients from materials. Compared with the traditional extraction method, it has the characteristics of high extraction efficiency, high product purity, no toxic and harmful substances, no environmental pollution and low operating cost. Today, supercritical CO2 extraction technology is undoubtedly the best alternative to traditional extraction methods.
Antarctic krill oil is rich in a variety of unsaturated fatty acids, rich in eicosapentaenoic acid (EPA), docosahexaenoic acid (DHA), phospholipids, flavonoids, VA, VE, astaxanthin and so on. In foreign countries, krill oil has been used for decades. In Europe and the United States, krill oil is a new resource food. It has been sold in the market in the form of dietary supplements for many years and has been officially recognized by European and American countries. Krill oil is rich in omega-3 fatty acids, phospholipids, choline and astaxanthin. At present, the benefits of krill have attracted the interest of the American Aerospace Food Technology Commercial Aviation Center, which has become a standard element in the astronaut diet.
At present, the general method for extracting krill oil from Antarctic krill is that the Antarctic krill is heated and dried after being caught, and the dried Antarctic krill is pulverized into krill powder after drying, and the krill oil is extracted by an organic solvent extraction method.
The organic solvent method has a residual organic solvent, which has the disadvantage of causing harm to the human body and the organic solvent used also causes great pollution to the environment. Therefore, there is an urgent need for an Antarctic krill oil extraction method that can be safe and effective, environmentally friendly, pollution-free, and easy to industrialize.
The company has successfully solved the problem of supercritical extraction of krill oil by combining multi-disciplinary theory and practical experience such as supercritical and other processes and industrialization amplification. It has taken the lead in developing a reasonable and feasible industrial production process for preparing krill oil. It makes it possible to achieve supercritical extraction of krill oil for industrial production. At present, our small-scale research has been successfully completed, and the production process route and key equipment structure design have also been formed.
The company fully analyzed the characteristics of krill meal and krill oil, and the drawbacks of the current commonly used extraction methods. The extraction of krill oil using supercritical CO2 extraction technology has higher extraction effect, no environmental pollution, no organic solvent residue, and its extraction. The rate is much higher than other methods such as conventional organic solvent extraction, and the extracted krill oil also has the characteristics of high purity, low acid value, convenient subsequent treatment, and can fully meet the requirements of relevant national standards. The current process is mature and can be adapted. Industrial scale production.