STABILIZED CHLORINE DIOXIDE FOR CONSERVATION OF CARBOHYDRATE RAW MATERIALS

摘要

1. A method of preserving a carbohydrate solution from microorganisms comprising contacting the carbohydrate solution or suspension with stabilized chlorine dioxide at a pH of at least 2.6, where the carbohydrate concentration is at least 1% by weight of the feed and the amount of stabilized chlorine dioxide added is from 10 up to 10,000 mg / kg as ClO from the total weight of the raw material. 2. The method according to claim 1, where the concentration of carbohydrate in the feed is from 1.0 to 70%, of the total weight of the feed, and the pH is at least 3.3. The method according to claim 1, wherein the carbohydrate raw material is a solution or suspension of fermentable sugar. The method according to claim 1, wherein the carbohydrate feedstock further comprises enzymes, surfactants, dispersants, antifoam compositions, minerals, trace elements, and combinations of two or more of them. The method of claim 1, wherein the carbohydrate feed is a cellulosic feed. The method of claim 1, wherein the stabilized chlorine dioxide is one or more chlorite-containing compounds. The method of claim 6, wherein the one or more chlorite-containing compounds is an aqueous alkali metal chlorite solution. The method of claim 7, wherein the alkali metal chlorite is sodium chlorite. The method of claim 8, where the pH is 3-9.10. The method of claim 8, where the pH is 4-7.11. The method of claim 8, wherein the amount of stabilized chlorine dioxide added is from 50 to 1000 mg / kg of the total weight of the feed.