The Formation of a Starch-like Polysaccharide from Maltose by Strains of Streptococcus pyogenes

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Abstract
Summary: Certain strains of Streptococcus pyogenes produced a starch-like substance in the presence of maltose and plasma. Amylolytic strains of group A streptococci produced larger amounts of the substance than other strains of these organisms. The substance was elaborated in the presence of optimal concentrations of plasma, with either starch, glycogen or maltose in the medium. It was not produced when either glucose-1-phosphate, glucose, cellobiose, melibiose, saccharose or lactose was substituted for maltose.

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