Starch thinning process

Details Starch thinning process Starch thinning process

1975-07-11

1977-12-13

Jones, Raymond N.

Textiles: fiber preparation

C12D 1302

Patent

active

040627284

ABSTRACT:
A starch thinning process employing .alpha.-amylase is carried out in two stages. In the first stage, a high temperature and high pressure operation, the aqueous starch suspension to be thinned is maintained therein for about 8 minutes at a temperature of about 100.degree. C. and then held at a temperature of about 150.degree. C. for about 5 minutes. Thereupon, the resulting treated aqueous starch suspension from the first stage is cooled and introduced into the second stage operation wherein it is maintained in contact with additionally added .alpha.-amylase for a period of time of about 90 minutes at atmospheric pressure at a temperature of about 96.degree. C. The resulting aqueous thinned starch product has a D.E. value in the range about 10-15.

REFERENCES:
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patent: 3551293 (1970-12-01), Seidman et al.
patent: 3654081 (1972-04-01), Vance et al.
patent: 3804715 (1974-04-01), Sugimoto et al.
patent: 3849194 (1974-11-01), Armbruster et al.
patent: 3853706 (1974-12-01), Armbruster et al.
patent: 3912590 (1975-10-01), Slott et al.
Madsen et al., "A New Heat Stable Bacterial Amylase and its Use in High Temperature Liquification," Die Starke, vol. 25, No. 9, pp. 306-308 (1973).

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