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(11)    Patent No :    AP 2761   
(21)    Application No :    AP/P/2010/005344   
(22)    Filing Date :    12.02.2009   
(24)    Date of Grant &    20.09.2013   
           
(45)    Publication :

(30)  Priority Data       
(33) Country    (31) Number    (32) Date
GB    0802675.9    13.02.2008
(84)    Designated State

BW    GM    GH    KE    LS    LR    MW  MZ  NA
SL    SD    SZ    TZ    UG    ZM    ZW
(73) Applicant(s)
BIOCONVERSION TECHNOLOGIES LIMITED, 263 Frimley

Green Road, Frimley Green, Camberley, Surrey GU16 6LD,
United Kingdom
(72) Inventors

BAGHAEI- YAZDI Namdar, United Kingdom

JAVED Muhammad, United Kingdom

HARTLEY Brian, United Kingdom

et al

(74) Representative

HONEY & BLANCKENBERG
(51)  International  Classification   C12P 7/06 (2006.01)    C12P 7/08 (2006.01)
Y02E 50/17 (2006.01)
(54)    Title

Increased ethanol production by bacterial cells

(57)    Abstract

Fermentation processes for production of ethanol include supplying a thermophilic microorganism lacking lactate dehydrogenase activity with sugars

under conditions in which they metabolise them predominantly by the pyruvate-formate lyase pathway. Importantly, the processes also include supplying sufficient glycerol to convert all of the sugars to ethanol. A further embodiment of the invention includes supplying additional glycerol sufficient to convert the exogenous acetate present in biomass hydrolysales into ethanol. Any type of fermentation system can be used for these processes, but a preferred embodiment includes continuous cultures at high temperatures in which ethanol is removed continuously by vacuum

(56)    Documents Cited :    DHARMADI YANDI et al    WO 2007/110606 A    WO 2007/110608 A    WO 2006/117536 A

ALAM K et al

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