Method applying membrane filtering technology to produce pure and raw sauce

The invention provides a method for applying a membrane filtering technology to produce pure and raw sauce, belonging to the technical field of sauce seasoning production. The method includes the following steps: the fermented sauce is settled for some time and is filtered by a micro-filtration membrane after the common pre-filtering treatment is carried out on the fermented sauce, so as to obtain the finished sauce. Compared with the prior art, the method in the invention has the following characteristics: the method in the invention not only can ensure the effective sterilizing of the sauce, but also can keep the original flavor of the sauce; in addition, the method in the invention can effectively remove unnecessary proteins, prolong the shelf life of the sauce, and lead nutrient components of the sauce to lose as less as possible. Therefore, the method can overcome the disadvantages of the prior art; the operation is simple, and the recycling rate of the filtered sauce is high; moreover, the method can provide the processing conditions which are more suitable for industrial production.