Heat resisting lyophilized protectant for chicken infectious bronchitis (H120, H52, Kidney infectious bronchitis W93) lyophilized vaccine and preparing process thereof
Patent number: CN1528456
Publication date: 2004-09-15
Inventor: WEI GUANGSEN (CN); WANG WENCHENG (CN); ZHANG WANLIN (CN)
Applicant: WEI GUANGSEN (CN)
Classification:
- international: A61K39/215; A61K47/42; A61K31/14
- european:
Application number: CN200410029583 20011221
Priority number(s): CN200410029583 20011221
Abstract of CN1528456
The present invention relates to a heat-resisting freeze-dried protection agent for chicken infectious bronchitis (H120, H52 and renal infections bronchitis W93) freeze-dried vacine and its preparation process. It is characterized by that all the effective components of said protection agent must be respectively undergone the process of sterilization treatment, and it adopts the following steps: (1). for the components which can be sterilized at high pressure dissolving them in distilled water and sterilizing at 116 deg.C for 30-40 min.; and (2) for the components which are not resistant to high temperature dissolving them in distilled water and filtering by using filtration membrane whose pore diameter is 0.22 microns to make sterilization, then they are mixed.
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