Method for the preparation of a biocidal formulation containing

Chemistry: molecular biology and microbiology – Carrier-bound or immobilized enzyme or microbial cell;... – Enzyme or microbial cell is immobilized on or in an organic...

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424 93461, 435177, 43525231, 435260, 435832, C12N 1110, C12N 120, C12N 104, A01N 6300

Patent

active

053525973

ABSTRACT:
Biocidal formulations prepared by: (a) blending predetermined amounts of pre-gelatinized starch, natural starch, biocide such as Bacillus thuringiensis and water to form a mass; (b) drying said mass by heating prepared by with a hot roller at temperatures between 50.degree. and 100.degree. C., preferably between 60.degree. and 90.degree. C., to form a dried mass; and (c) crushing the dried mass to form the final product having the shape of flakes with a diameter preferably less than about 900.mu.. With the method disclosed in the present invention, the process time can be reduced from 24 hours in the prior art to no more than 30 minutes, preferably about 3 to 15 minutes. The present invention represents substantial economic benefits as well as reductions of potential health risks as a result of the reduced contact by operators with biocides during the preparation process.

REFERENCES:
patent: 3985616 (1976-10-01), Weaver et al.
patent: 4127944 (1978-12-01), Giacobello
patent: 4155888 (1979-05-01), Mooth
patent: 4859377 (1989-08-01), Shasha et al.

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