C - Chemistry – Metallurgy – 12 – G
Patent
C - Chemistry, Metallurgy
12
G
C12G 1/02 (2006.01) A01N 43/90 (2006.01) A01N 47/44 (2006.01) A01P 1/00 (2006.01) C12H 1/00 (2006.01) C12P 7/02 (2006.01)
Patent
CA 2752230
The control of the microbial contamination during the sugar fermentation in the processes for obtaining alcohol is a very important action to increase the productivity of the alcoholic fermentation processes. The Saccharomyces cerevisiae yeast cells engage a very tough nutritional competition for the sugarcane juice with the bacteria (Lactobacillus sp and Acetobacter) and the wild yeasts. The proposed composition uses an antimicrobial agent of the guanidine family, such as for example, poly(hexamethyl biguanide), an antibiotic agent, and also a surfactant agent, to prevent the undesired microbial growth. The present invention further refers to the process for controlling the microbial contamination through the use of said agents.
La lutte contre la contamination microbienne pendant la fermentation du sucre dans les procédés d'obtention d'alcool est une action très importante pour augmenter la productivité des procédés de fermentation alcoolique. Les cellules de levure Saccharomyces cerevisiae engagent une compétition nutritionnelle très rude pour le jus de canne à sucre avec les bactéries (Lactobacillus sp et Acetobacter) et les levures sauvages. La composition décrite utilise un agent antimicrobien de la famille de la guanidine, tel que, par exemple le poly(hexaméthyl biguanide), un agent antibiotique ainsi qu'un agent tensioactif, pour empêcher la croissance microbienne non voulue. La présente invention porte en outre sur le procédé de lutte contre la contamination microbienne par l'utilisation desdits agents.
Franzin Mauricio Da Silva
Prioli Maria Regina
Arch Chemicals Inc.
Smart & Biggar
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