An endo-β1,3-glucanase from a green malt extract was purified by DEAE- and CM-cellulose ion exchange chromatography followed by molecular sieve chromatography on BioGel P-100. A final enzyme preparation had two protein components on disc electrophoresis, one of which was in-active. The enzyme had a pH optimum of 5·0 for activity on laminarin and 5·8 on carboxymethyl pachyman. The activity was stable up to 60°C and was stimulated by NaCl. The isoelectric point of the enzyme was 9·8.
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Ballance et al. (1976) studied this question.
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