Cold hydrolysis of starch: New trends

Abstract

Improved depolymerization of grain starch to glucose is crucial for reduction of energy use in the bioconversion of glucose to industrially important compounds. In fuel ethanol production, these steps use 10-20% of the energy content of the fuel ethanol. The need to minimize energy use can be met by replacing high-temperature, liquid-phase, enzymatic digestion with low temperature, solid-phase, enzymatic digestion. Also called cold hydrolysis, the approach is a step toward a 'green' method for the production of fuel ethanol, and because of this there has been increased recent world interest in this approach.

Poboljšanje procesa depolimerizacije zrna skroba do glukoze ključni je faktor u smanjenju energetske potrošnje u biokonverziji glukoze u industrijski važna jedinjenja. Kod procesa proizvodnje bioetanola ovi koraci obuhvataju 10-20% ukupne energetske potrošnje. Potreba za smanjenjem energetske potrošnje mogla bi da se zadovolji zamenom procesa enzimske hidrolize na visokoj temperaturi u tečnoj fazi, procesom enzimske hidrolize na nižim temperaturama i na čvrstoj fazi. Ovaj proces još nazvan i hladna hidroliza predstavlja korak napred u zelenoj tehnologiji za proizvodnju bioetanola, te poslednjih godina u svetu raste interes za razvojem ovakvog pristupa.