Stabilized chlorine dioxide to preserve carbohydrate feedstocks
AssigneeE.I. du Pont de Nemours and Company
InventorsERIC GUY SUMNER, DERRICK OKULL, ETHAN BARUCH SOLOMON
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Abstract
A process to preserve a carbohydrate feedstock against contaminant microorganisms comprises contacting the carbohydrate feedstock with a stabilized chlorine dioxide at a pH of at least 2.6. The carbohydrate feedstock preferably comprises a naturally-occurring carbohydrate, particularly a carbohydrate having a reducing end group. The process is particularly suitable to treat feedstocks used in biorefining processes, such as in ethanol fermentation.
Claims20
A process to preserve a carbohydrate solution against microorganisms comprising or consisting essentially of or consisting of contacting the carbohydrate solution or suspension with a stabilized chlorine dioxide at a pH of at least 2.6 wherein the concentration of the carbohydrate is at least 1%, by weight of the feedstock, and the amount of stabilized chlorine dioxide added is 10 to 10000 mg/kg as ClO2, based on total feedstock weight.
Dependencies are inferred from the claim text.