type B antigens
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United States of America Patent
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Jan 31, 2017
Grant Date -
Jun 18, 2015
app pub date -
Jul 2, 2013
filing date -
Jul 2, 2012
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Abstract
The invention concerns a method for producing, on an industrial scale, capsular polysaccharide of Haemophilus influenzae type b (PRP) intended for vaccine purposes, according to which a strain of Haemophilus influenzae type b (Hib) is cultured in a culture medium, the culture supernatant is harvested and treated in order to extract the capsular polysaccharide therefrom, said culture medium comprising at least: —one source of carbon, —protoporphyrin, —salts, —amino acids, —NAD or NADH, —vitamins, —means for regulating the pH, characterised in that said culture medium is chemically defined.
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