Physicochemical properties of hyaluronic acid formed by Streptococcus haemolyticus

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Abstract
The physicochemical properties of hyaluronic acid formed by a group A strain of Streptococcus haemolyticus in the presence and absence of the hyaluronidase inhibitor 53 Dk were measured. The material formed in the presence of the inhibitor is much more highly polymerized. Washed cells of S. haemolyticus exerted a hyaluronidase action which was abolished by heating the cells to 70[degree]. The specific refractive increment of protein-free hyaluronic acid was measured. The value obtained, 1.44 x 10-3, is believed to be accurate.