Roquette Freres | Date: 2015-05-13
A method for in-line control of the integrity of a filtering system implemented during an industrial process including the filtering of a gas through the filtering system, the filtering system including at least one filtering cartridge, the method including at least the following steps: a measurement step (S1) which involves measuring a pressure difference P representative of the pressure loss caused by the filtering system (F1; F2), a testing step (S2, S3) which involves comparing the measurement (S1) with a predefined high threshold (Sh) and a predefined low threshold (Sb), in such a way as to consider the at least one filtering cartridge to be non-compliant when the pressure difference measured in the measurement step (S1) falls outside a range located between the high threshold (Sh) and the low threshold (Sb).
Roquette Freres | Date: 2015-03-20
The present invention relates to a method for decontaminating glucose polymers or the hydrolysates of the pro-inflammatory molecules thereof. Said method includes a) providing glucose polymers or the hydrolysates thereof, b) optionally, detecting or assaying the pro-inflammatory molecules in the glucose polymers or the hydrolysates thereof provided in Step a), and c) carrying out the following purifying steps: i. treatment using an enzymatic preparation having detergent properties and clarification properties; ii. treatment using a pharmaceutical-grade activated carbon with very high adsorption properties and micropore porosity; iii. optionally, treatment using a second activated carbon with mesopore porosity; iv. passing them over a macroporous adsorbent polymer resin having porosity greater than 100 Angstroms; and v. continuous ultrafiltration at 5 kDa.
Roquette Freres | Date: 2015-02-05
The present invention relates to a biological method for the dosage of peptidoglycans in a sample, especially a sample of glucose polymers.
Roquette Freres | Date: 2015-03-18
Disclosed is a method for thermal permeabilization of the biomass of microalgae of the Chlorella genus in such a way as to recover therefrom the soluble fractions which are enriched in particular with proteins and with oligosaccharides, including the following steps: provision of a microalgae biomass; heat treatment in steps at a temperature of between 60 and 130 C., preferably 60 and 90 C., for 1 to 5 minutes; cooling to a temperature of between 0 and 10 C.; and recovery, concentration and enrichment of the soluble fractions from which the microalgae cells have been removed.
Roquette Freres | Date: 2016-10-13
The invention relates to a method for detecting contaminants of glucose polymers, said contaminants being capable of acting in synergy with one another so as to trigger an inflammatory reaction, characterized in that it comprises an in vitro inflammatory response test using modified cell lines.
Roquette Freres | Date: 2016-07-25
Coagglomerates of mannitol, whose laser volume-average diameter D4,3 is between 1 and 200 m, and of granular starch, are characterized in that they have a disintegration behaviour determined according to a test A such that the relaxation time measured is between 30 and 100 seconds and the swelling force is between 0.8 and 3.0 N.
Roquette Freres | Date: 2015-01-21
A process for producing bis-anhydrohexitol ether compositions and in particular isohexide glycidyl ether compositions, one of the originalities of which is azeotropic distillation carried out under reduced pressure. Such compositions are used to produce epoxy resins, the function thereof being to form a three-dimensional macromolecular network. The compositions obtained according to the process are rich in diepoxy derivatives of isosorbide to the detriment of monoepoxy derivatives, only the first participating in the formation of the three-dimensional network. The crosslinking density is therefore increased, thereby making it possible to obtain a material which is more chemically resistant and mechanically stronger and which has a higher glass transition temperature (Tg), compared with the same materials obtained with bis-anhydrohexitol ether compositions according to the prior art.
Roquette Freres | Date: 2014-11-27
Granules of protein-rich microalgal biomass flour having: a particle size distribution, measured on an LS laser granulometer of the COULTER brand, with a Dmode of 60 to 300 m and a D4.3 of 70 to 420 m; an aerated density, measured on a HOSOKAWA Powder Characteristics Tester, of 0.60 to 0.70%; and a compressibility, measured on a HOSOKAWA Powder Characteristics Tester, of 15 to 25%, preferably 18 to 21%.
Roquette Freres | Date: 2015-01-19
The invention relates to a method for the protein enrichment of a microalga of the genus Chlorella, cultivated under heterotrophic conditions. The method is characterized in that the heterotrophic cultivation comprises a step intended to slow down the growth of the microalga, with the fermentation medium being deficient in a nitrogen-free nutritional source.
Roquette Freres | Date: 2015-08-25
Dianhydrohexitol pellets, whose fluidity is preserved even after lengthy storage, include between 90% and 100%, preferably between 95% and 100%, and more preferentially between 97% and 100% of dianhydrohexitols by weight, on a dry weight basis, and have the particularity of not being subject to caking. A process for preparing the dianhydrohexitol pellets is also described.