2 results about "Biologically active substances" patented technology

The invention provides a method for subcritical fluid extraction of tea extract. The method comprises the following steps of carrying out dimethyl ether subcritical fluid continuous dynamic extraction on tea at a temperature of 15-60 DEG C under pressure of 0.4-3MPa for 30-270min so that an extract mixture is obtained, removing tea residue from the extract mixture, and carrying out dimethyl ether subcritical fluid gasification at a temperature of 40-60 DEG C under the pressure of -0.08 to 1.2MPa so that the tea extract is obtained. The method needs a low temperature and low pressure in extraction, prevents biologically-active substances in tea from being destroyed, and has a low equipment cost. The tea residue has low water content and a high recycle value. The method can be widely used in the field of tea extract preparation.

The invention relates to the process for preparing inorganic salt nano particles containing biologically active compounds and Chinese medicinal constituents and its use, wherein the preparing process comprises, preparing inorganic salt nano particles containing biologically active substance, then encapsulating active compound and biologically active substance of the Chinese medicine. The obtained inorganic salt nano particles can be used as carrying agent to deliver biologically active substance in the treatment of diseases, or as vaccine adjuvant.