Purification of beta-toxin from Clostridium perfringens type C

Abstract
.beta.-Toxin was purified about 340-fold from culture supernatant fluid of C. perfringens type C with a yield of about 24% in terms of biologically active .beta.-toxin. The purification involved (NH4)2SO4 fractionation, gel filtration through Sephadex G-100, isoelectrofocusing in a pH 3-6 gradient and immunoaffinity chromatography. The purified .beta.-toxin gave a single band on polyacrylamide gel electrophoresis.