Method of making dextrose using purified amyloglucosidase

Claim 1

A PROCESS FOR OBTAINING PURE AMYLOGLUCOSIDASE FROM AN AMYLOGLUCOSIDASE CONTAINING ENZYME PREPARATION WHICH COMPRISES TREATING AN AQUEOUS SOLUTION OF SAID PREPARATION ABOUT 0.5 TO ABOUT 2 PERCENT OF A WATER INSOLUBLE HYDROUS SYNTHETIC MAGNESIUM SILICATE, AT A PH OF ABOUT 3.8 TO ABOUT 4.5, CENTRIFUGING THE MIXTURE, ADDING TO THE LIQUID PHASE CONTAINING THE AMYLOGLUCOSIDASE SUFFICIENT ACETONE TO PROVIDE A 50 PERCENT BY VOLUME ACETONE SOLUTION, ADDING THERETO ABOUT 0.25 GRAM OF ELECTROLYTE PER 100 ML. OF ACETONE SOLUTION TO PRECIPITATE THE AMYLOGLUCOSIDASE, SEPARATING AND WASHING THE AMYLOGLUCOSIDASE, REDISSOLVING THE AMYLOGLUCOSIDASE IN 50 PERCENT BY VOLUME AQUEOUS ACETONE, ADDING ABOUT 0.25 GRAM OF ELECTROLYTE PER 100 ML. OF SOLUTION TO PRECIPITATE THE AMYLOGLUCOSIDASE AND SEPARATING THE PURIFIED AMYLOGLUCOSIDASE.