Protease inactivated alpha-amylase preparations

Details Protease inactivated alpha-amylase preparations Protease inactivated alpha-amylase preparations

C - Chemistry, Metallurgy

12

P

195/124, 195/38,

C12P 21/00 (2006.01) C12N 9/00 (2006.01) C12N 9/14 (2006.01) C12N 9/28 (2006.01)

Patent

CA 1089384

ABSTRACT Protease enzyme impurities contained in bacterial .alpha.- amylase enzyme preparations are inactivated by a mild heat treat- ment in the presence of a protective material. Useful protective materials include calcium and starch hydrolysates such as corn syrup. The protease-free .alpha.-amylase can then be used to solubilize starch materials by various granular starch and conventional processes. Hydrolysates obtained contain significantly less soluble protein than those prepared using untreated .alpha.-amylases. A preferred .alpha.-amylase enzyme preparation is one derived from a bacillus licheniformis microorganism.

284041

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