Patents by Inventor Mohamed Fadhel BEN CHAABANE

Mohamed Fadhel BEN CHAABANE has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20210284982
    Abstract: The present invention relates to a method for producing enzymes by a strain belonging to a filamentous fungus, which comprises three steps: (a) a first step of growing biomass, in the presence of at least one carbon-based growth substrate in a stirred and aerated bioreactor (1) in batch phase, (b) a second step of diluting the culture medium obtained in the first step (a), (c) a third step of producing enzymes from the diluted culture medium obtained in the second step (b), in the presence of at least one inductive carbon-based substrate, in fed-batch phase.
    Type: Application
    Filed: August 26, 2019
    Publication date: September 16, 2021
    Applicant: IFP Energies Nouvelles
    Inventors: Mohamed Fadhel BEN CHAABANE, Celine COHEN, Bernard CHAUSSEPIED, Frederic AUGIER
  • Publication number: 20210147893
    Abstract: The present invention relates to a process for producing cellulolytic and/or hemicellulolytic enzymes with a strain of microorganism belonging to the family of filamentous fungi, said process comprising the following steps: (a) a first step of growing the fungi in an aqueous culture medium, in the presence of at least one carbon-based growth substrate, in a stirred and aerated bioreactor, (b) a second step of producing enzymes, starting with the aqueous culture medium obtained in the first step (a), in the presence of at least one inductive carbon-based substrate, also inducing the production of hydrophobins, and, in a step (d), at least a portion of the hydrophobins produced in step (b) are reintroduced into the growth step (a).
    Type: Application
    Filed: November 17, 2020
    Publication date: May 20, 2021
    Applicant: IFP Energies nouvelles
    Inventors: Mohamed Fadhel BEN CHAABANE, Etienne JOURDIER, Caroline AYMARD, Frederic AUGIER
  • Patent number: 10822600
    Abstract: The invention relates to a process for producing cellulolytic or hemicellulolytic enzymes comprising A growth phase a) of a cellulolytic microorganism in a closed reactor, in the presence of at least one carbonaceous growth substrate in a concentration between 10 and 90 g/L, at a temperature of 25-30° C. and a pH of 4-5.5 An enzyme production phase b) in which at least one inducer carbonaceous substrate is added, at a temperature of 25-27° C. and a pH of 4-5, process in which the said inducer substrate is a pretreated pomace obtained from a pretreatment process of lignocellulosic material that has not undergone enzymatic hydrolysis and that is added in fed-batch or continuous mode, and which has particular characteristics: a hydrolysis yield greater than 80% in a test and an apparent viscosity, measured in the test, of less than 1 Pa·s for a shear rate of 10 s?1.
    Type: Grant
    Filed: March 24, 2017
    Date of Patent: November 3, 2020
    Assignees: IFP Energies nouvelles, AGRO INDUSTRIES RECHERCHE ET DEVELOPPEMENT, INSTITUT NATIONAL DE LA RECHERCHE AGRONOMIQUE
    Inventors: Mohamed Fadhel Ben Chaabane, Celine Cohen
  • Publication number: 20200031864
    Abstract: The invention relates to a method for separating, from a culture medium, an enzymatic cocktail and the fungus Trichoderma reesei, the culture medium resulting from enzyme production by the fungus, method in which: said culture medium is subjected, in a period of no longer than 30 h from the halting of production, to a separation on a filter press lined with a fabric having a porosity of 3-20 ?m, so as to obtain a filtrate having a corrected optical density OD at 600 nm of less than 2.5; and the liquid phase obtained is subjected to tangenital micro-filtration on a ceramic membrane having a cut-off limit of 0.5 to 1.4 ?m, so that the corrected OD at 600 nm does not exceed 0.1.
    Type: Application
    Filed: July 11, 2017
    Publication date: January 30, 2020
    Applicants: IFP Energies Nouvelles, Institut National De La Recherche Agronomique
    Inventors: Mohamed Fadhel BEN CHAABANE, Romain ROUSSET
  • Publication number: 20190093068
    Abstract: The object of the invention is a method for modifying the morphology of coagulant type aggregated filamentous fungi comprising: a) the encapsulation of the spores of the said filamentous fungi in the dispersed phase of a water-in-oil emulsion, b) the germination of the encapsulated spores in the said dispersed phase of the emulsion, c) the recovery of the non-aggregated germinated spores, the said emulsion being obtained by using a microfluidic device, d) the culturing of the germinated spores in a liquid medium.
    Type: Application
    Filed: September 26, 2018
    Publication date: March 28, 2019
    Applicant: IFP Energies nouvelles
    Inventors: Marion DROUGARD, Estelle ANDRE, Etienne JOURDIER, Mohamed Fadhel BEN CHAABANE, Nicolas PANNACCI
  • Publication number: 20190085310
    Abstract: The invention relates to a process for producing cellulolytic or hemicellulolytic enzymes comprising A growth phase a) of a cellulolytic microorganism in a closed reactor, in the presence of at least one carbonaceous growth substrate in a concentration between 10 and 90 g/L, at a temperature of 25-30° C. and a pH of 4-5.5 An enzyme production phase b) in which at least one inducer carbonaceous substrate is added, at a temperature of 25-27° C. and a pH of 4-5, process in which the said inducer substrate is a pretreated pomace obtained from a pretreatment process of lignocellulosic material that has not undergone enzymatic hydrolysis and that is added in fed-batch or continuous mode, and which has particular characteristics: a hydrolysis yield greater than 80% in a test and an apparent viscosity, measured in the test, of less than 1 Pa·s for a shear rate of 10 s?1.
    Type: Application
    Filed: March 24, 2017
    Publication date: March 21, 2019
    Applicants: IFP Energies nouvelles, AGRO INDUSTRIES RECHERCHE ET DEVELOPPEMENT, INSTITUT NATIONAL DE LA RECHERCHE AGRONOMIQUE
    Inventors: Mohamed Fadhel BEN CHAABANE, Celine COHEN