Recently, "A Fermentation and Production Method for Bacillus Subtilis Preparation", invented by HU Gengdong, SONG Chao, etc. from the Department of Fishery Environment Protection of FFRC, was granted the National Invention Patent with the patent number ZL 201310037997.3.

The raw materials used in this method are convenient for household farms to purchase, which include: large-size bran, soybean powder, rice bran, brown sugar, yeast powder, water and commercially available Bacillus subtilis. This method is simple and easy to operate, and can produce high-purity Bacillus subtilis. Being suitable especially for small-scale farms, this method can effectively reduce the production cost and increase profit.