Ifp Energies Nouvelles

Institut Francais Du Pe'trole

Commissariat a L'energie Atomique

Stichting Dienst Landbouwkundig Onderzoek

Institut Fran.cedilla.ais Du Petrole

Sophor S.a.

Institut National De La Recherche Agronomique

Centre National De La Recherche Scientifique-cnrs

Remy Marchal

Caroline Aymard

Benjamin Clement

Jeannine Lemal

Caroline Sulzer

Bruno Delfort

Gerard Hillion

Rejane Dastillung

Nicolas Lopes Ferreira

Marcel Ropars

Frederic Monot

Francoise Fayolle

Michel Warzywoda

Sandra Menir

Ana Maria Lopez Contreras

Frederique Borzeix

Florent Collas

Corinne Stoltz

Anne-Marie Davila

Bernard Chaussepied

Pieternel Am Claassen

Monique Hermann

Elodie Nicolau

Yves Jouanneau

Jean-Marc Nicaud

Marie-Therese Le Dall

France Thevenieau

The present invention concerns a process for the production of an aqueous mixture comprising isopropanol, n-butanol and ethanol, comprising a step in which an aqueous solution containing C5 and/or C6 sugars and acetate is fermented under strict anaerobic conditions in the presence of a fermenting microorganism of the genusand in which said aqueous solution has an acetate concentration in the range 0.5 to 10 g/L and a ratio by weight of (acetate)/(sum of C5 and/or C6 sugars) in the range 0.005 to 0.35 g/g.

IBE fermentation method

This invention describes a process for the production of second generation alcohols and/or solvents starting from cellulosic or lignocellulosic biomass wherein the lignocellulosic or cellulosic biomass undergoes a pretreatment before being converted into ethanol after an enzymatic hydrolysis and an ethylic fermentation, wherein glucidic polymers of the pretreated plant are hydrolyzed by cellulases; microorganisms that primarily use hexoses and preferably glucose and mannose are used for the ethylic fermentation; wines, with or without separation of materials in suspension are extracted by distillation; pentoses in the vinasses are fermented by a solventogenic microorganism into a butyl wine, and at least one portion of the butyl wine is recycled upstream from enzymatic hydrolysis.

Method for producing ethanol and solvents from lignocellulosic biomass including the recirculation of a butyl wine obtained by fermenting pentoses

The expression vector includes: the nucleic acids coding for the polypeptides forming a polypeptide complex having an enzyme activity allowing acetoacetyl-CoA to be converted to acetoacetate; optionally, at least one nucleic acid coding for a polypeptide having an enzyme activity allowing acetoacetate to be converted to acetone; and at least one nucleic acid coding for a polypeptide having an enzyme activity allowing acetone to be converted to isopropanol; the expression of the nucleic acids being controlled by a single constitutive promoter located upstream of the abovementioned nucleic acids.

Production of isopropanol by improved recombinant strains

The invention describes a method of converting biomass to products that can be incorporated into the diesel fuel pool, comprising a first stage of fermentation of renewable raw materials of vegetable origin at the end of which a least one alcohol and at least one compound containing a carbonyl group are obtained, and a second stage corresponding to an acetalization reaction involving said alcohol and said compound containing a carbonyl group.

Method for converting biomass into products containing acetal groups and use thereof as biofuels

The invention relates to a method for treating effluents containing 2-ethylhexyl nitrate (2-EHN), or nitric ester of 2-ethylhexane-1-ol, in order to reduce at least partly the concentration thereof, characterized in that it comprises growing, in the presence of a suitable substrate, aCIP-1-2126 bacterium and degrading the 2-EHN contained in the effluents by the biomass of said bacterium thus produced. The invention has application in the Application: depollution of waters and soils polluted by 2-EHN.

Method for bacterial treatment of effluents containing 2-ethylhexyl nitrate

A process for the fed batch production of a sophorolipid composition is described, in which culturing takes place of at least one Candida bombicola strain in a culture medium incorporating a sugar and a nitrogen source and said cultured strain is exposed in a reaction zone to a supply of an appropriate substrate under adequate aeration, temperature and pH conditions and at least once the following sequence is performed: a) the strain is continuously supplied with substrate at a supply rate in the reaction zone between 0.01 and 4 grams per hour and per liter of initial reaction volume and for a supply time such that the residual substrate concentration in the reaction zone is maintained at a value at the most equal to 18 grams per liter of initial reaction volume during said supply time; and b) the sophorolipid composition produced is recovered; the process being characterized in that the substrate essentially consists of at least one animal oil, at least one vegetable and/or at least one ester of said oil, said oils and said ester incorporating an aliphatic linear chain with 10 to 24 carbon atoms.

Production of sophorolipid acetate acids from oils or esters

A process for the production of sophorolipids by a stock of Candida bombicola or apicola in a medium that contains a source of nitrogen and a substrate is described. The process includes a first fermentation cycle that includes a stage of growth of the stock and a stage of production of a fermentation wort. The following stages are carried out at least once: a) a portion of the wort is drawn off; b) a mineral that contains nitrogen is added to the remaining portion to constitute a second medium; c) a new fermentation cycle is carried out from this second medium, and another wort is produced. Sophorolipids are recovered from these worts of stages (a) and (c). The duration of the first and new fermentation cycles is at least 30 hours.

Process for the production of sophorolipids by cyclic fermentation with

Use of a sophorolipid to provide free radical formation inhibiting

Method of production of sophorosides by fermentation with fed batch

The Clostridium acetobutylicum mutant IFP 904 (ATCC 39058) is obtained by spreading a culture of a strain of Clostridium acetobutylicum at the surface of a solid culture medium containing n-butanol at a specified concentration, growing the strain in the presence of a mutagenic agent and recovering a strain of increased resistance to n-butanol. The resultant mutant can be used to produce a mixture of butanol and acetone of increased concentration.

Production of clostridium acetobutylicum mutants of high butanol and

Growing community of inventors

Chatou, France

Remy Marchal