Method for obtaining recombinant hbsag

摘要

The present invention relates to a method for recovering recombinant HBsAg, wherein recombinant methylotrophic yeast cells which are capable of expressing HBsAg are disrupted using a high pressure homogenizer, and HBsAg is recovered from the cell debris obtained. The inventive method is characterized by a high product yield per g of cell dry weight and thus constitutes a considerable improvement over the former methods for recovering HBsAg.