Serrapeptase, which is a high-yield strain of Serratia, is extracted by deep submerged fermentation. This product is widely used in the medical field and is used as an alternative medicine in many countries (such as Japan) and has a long Application history.

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(2) Promote the sputum, the dissolution and excretion of the concentrated solution: 1 for patients with chronic paranasal sinusitis, the dry matter weight in the nasal sputum is reduced, the viscosity is decreased; 2 for rabbits exposed to sulfur dioxide gas and suffering from subacute bronchitis (3) The role of promoting the displacement of antibiotics to the lesion: for patients with chronic paranasal sinusitis, it can promote the migration of ampicillin to the maxillary sinus.