Summary
Microorganisms which produce strong raw-starch degrading enzymes were isolated from soil using a medium containing a unique carbon source, “α-amylase resistant starch (α-RS)”, which is insoluble in water and hardly digested with Bacillus amyloliquefaciens α-amylase. Among the isolates, three strains showing high activities were characterized. Two of them, K-27 (fungus) and K-28 (yeast), produced α-amylase and glucoamylase, and the final product from starch was only glucose. The third strain, K-2, was a bacterium and produced α-amylase, which produced glucose and malto-oligosaccharides from starch. The enzyme preparation of these strains degraded raw corn starch rapidly.
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Bergmann, F.W., Abe, Ji. & Hizukuri, S. Selection of microorganisms which produce raw-starch degrading enzymes. Appl Microbiol Biotechnol 27, 443–446 (1988). https://doi.org/10.1007/BF00451610
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DOI: https://doi.org/10.1007/BF00451610