Patent AU-2007261463-B2 (AU)
Title: Process for preventing bacterial growth in fermentation processes
Inventor: SUMNER ERIC GUY
IPC: C12P7/06
Filed: 2007-09-28
Granted: 2013-09-26
Abstract: (12) INTERNATIONAL APPLICATION PUBLISHED UNDER THE PATENT COOPERATION TREATY (PCT) CORRECTED VERSION (19) World Intellectual Property Organization International Bureau (43) International Publication Date (10) International Publication Number 27 December 2007 (27.12.2007) PCT W O 2007/149450 A2 (51) International Patent Classification: Not classified AT, AU, AZ, BA, BB, BG, BH, BR, BW, BY, BZ, CA, CI, CN, CO, CR, CU, CZ, DE, DK, DM, DO, DZ, EC, EE, EG, (21) International Application Number: ES, FI, GB, GD, GE, GI, GM, GT, HN, HR, HlU, ID, IL, PCT/US2007/014299 IN, IS, JP, KE, KG, KM, KN, KP, KR, KZ, LA, LC, LK, LR, LS, LT, LU, LY, MA, MD, ME, MG, MK, MN, MW, (22) International Filing Date: MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PG, PH, PL, 28 September 2007 (28.09.2007) PT, RO, RS, RU, SC, SD, SE, SG, SK, SL, SM, SV, SY, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, (25) Filing Language: English ZM, ZW. (26) Publication Language: English (84) Designated States (unless otherwise indicated, for every kind of regional protection available): ARIPO (BW, GI, (71) Applicant (for all designated States except US): E. . DU GM, KE, LS, MW, MZ, NA, SD, SL, SZ, TZ, UG, ZM, PONT DE NEMOURS AND COMPANY [US/US]; 1007 ZW), Eurasian (AM, AZ, BY, KG, KZ, MD, RU, TJ, TM), Market Street, Wilmington, Delaware 19898 (US). European (AT, BE, BG, CI, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HJU, IE, IS, IT, LT, LU, LV, MC, MT, NL, PL, (72) Inventors; and PT, RO, SE, SI, SK, TR), OAPI (BE, BJ, CF, CG, CI, CM, (75) Inventors/Applicants (for US only): SUMNER, Eric, GA, GN, GQ, GW, ML, MR, NE, SN, TD, TG). Guy [US/US]; 116 Mitchell Road, Hockessin, Delaware 19707 (US). OKULL, Derrick [KE/US]; 4838 Plum Run Published: Court, Wilmington, Delaware 19808 (US). DISCHERT, - without international search report and to be republished Dwayne, William [US/US]; 25 JH Dwyer Drive, Middle- upon receipt of that report town, Rhode Island 02842 (US). - with information concerning one or more priority claims considered void (74) Agent: SANCHEZ, Kathryn, M.; E. I. du Pont de Nemours and Company, Legal Patent Records Center, (48) Date of publication of this corrected version: 4417 Lancaster Pike, Wilmington, Delaware 19805 (US). 31 July 2008 (81) Designated States (unless otherwise indicated, for every (15) Information about Correction: kind of national protection available): AE, AG, AL, AM, see Notice of 31 July 2008 (54) Title: PREVENTION OF BACTERIAL GROWTH IN FERMENTATION PROCESSES (57) Abstract: A fermentation process for the production of ethanol from natural sources, such as corn, comprising introducing a fermentable sugar, an inoculant, and a stabilized chlorine dioxide into a fermentation system is disclosed. The stabilized chlorine dioxide is added preventatively to the fermentation system, at concentrations in the fermentation system of acetic acid no greater than 0.30% (weight/volume) and lactic acid no greater than 0.60% (weight/volume). The stabilized chlorine dioxide is added in an amount effective to substantially prevent growth of bacteria.