WO2010125315A1 - Procede de purification de polymeres de glucose destines aux solutions de dialyse peritoneale - Google Patents
Procede de purification de polymeres de glucose destines aux solutions de dialyse peritoneale Download PDFInfo
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- WO2010125315A1 WO2010125315A1 PCT/FR2010/050815 FR2010050815W WO2010125315A1 WO 2010125315 A1 WO2010125315 A1 WO 2010125315A1 FR 2010050815 W FR2010050815 W FR 2010050815W WO 2010125315 A1 WO2010125315 A1 WO 2010125315A1
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- glucose polymers
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08B—POLYSACCHARIDES; DERIVATIVES THEREOF
- C08B30/00—Preparation of starch, degraded or non-chemically modified starch, amylose, or amylopectin
- C08B30/12—Degraded, destructured or non-chemically modified starch, e.g. mechanically, enzymatically or by irradiation; Bleaching of starch
- C08B30/18—Dextrin, e.g. yellow canari, white dextrin, amylodextrin or maltodextrin; Methods of depolymerisation, e.g. by irradiation or mechanically
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L2/00—Disinfection or sterilisation of materials or objects, in general; Accessories therefor
- A61L2/02—Disinfection or sterilisation of materials or objects, in general; Accessories therefor using physical processes
- A61L2/022—Filtration
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L2/00—Disinfection or sterilisation of materials or objects, in general; Accessories therefor
- A61L2/02—Disinfection or sterilisation of materials or objects, in general; Accessories therefor using physical processes
- A61L2/04—Heat
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
- B01D61/14—Ultrafiltration; Microfiltration
- B01D61/145—Ultrafiltration
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto
- B08B9/08—Cleaning containers, e.g. tanks
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12P—FERMENTATION OR ENZYME-USING PROCESSES TO SYNTHESISE A DESIRED CHEMICAL COMPOUND OR COMPOSITION OR TO SEPARATE OPTICAL ISOMERS FROM A RACEMIC MIXTURE
- C12P19/00—Preparation of compounds containing saccharide radicals
- C12P19/04—Polysaccharides, i.e. compounds containing more than five saccharide radicals attached to each other by glycosidic bonds
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- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12P—FERMENTATION OR ENZYME-USING PROCESSES TO SYNTHESISE A DESIRED CHEMICAL COMPOUND OR COMPOSITION OR TO SEPARATE OPTICAL ISOMERS FROM A RACEMIC MIXTURE
- C12P19/00—Preparation of compounds containing saccharide radicals
- C12P19/14—Preparation of compounds containing saccharide radicals produced by the action of a carbohydrase (EC 3.2.x), e.g. by alpha-amylase, e.g. by cellulase, hemicellulase
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L2103/00—Materials or objects being the target of disinfection or sterilisation
- A61L2103/05—Living organisms or biological materials
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M1/00—Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
- A61M1/14—Dialysis systems; Artificial kidneys; Blood oxygenators ; Reciprocating systems for treatment of body fluids, e.g. single needle systems for hemofiltration or pheresis
- A61M1/28—Peritoneal dialysis ; Other peritoneal treatment, e.g. oxygenation
- A61M1/287—Dialysates therefor
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- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D2111/00—Cleaning compositions characterised by the objects to be cleaned; Cleaning compositions characterised by non-standard cleaning or washing processes
- C11D2111/10—Objects to be cleaned
- C11D2111/14—Hard surfaces
- C11D2111/20—Industrial or commercial equipment, e.g. reactors, tubes or engines
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D2111/00—Cleaning compositions characterised by the objects to be cleaned; Cleaning compositions characterised by non-standard cleaning or washing processes
- C11D2111/40—Specific cleaning or washing processes
- C11D2111/44—Multi-step processes
Definitions
- the present invention relates to a method for purifying glucose polymers for the manufacture of peritoneal dialysis solutions.
- Peritoneal dialysis is a type of dialysis that aims to eliminate waste such as urea, creatinine, excess potassium or excess water that the kidneys fail to purify or plasma blood. This medical treatment is indicated for chronic end stage renal failure.
- Peritoneal dialysis uses two principles put into action thanks to the physiological property of permeability of the peritoneum: the ultrafiltration of liquid and the purification of waste by diffusion.
- the peritoneum is a serous membrane, with a surface of about 2 m 2 , composed of two layers: the parietal layer lining the inner side of the walls (abdomen, small pelvis, diaphragm) and the visceral sheet surrounding the organs.
- the blood flow is very important because of the large number of blood vessels and capillaries, especially at the parietal leaflet.
- the surface of the vascular network represents approximately 1 m 2 .
- Between the two layers is a virtual space: the peritoneal cavity.
- an artificial liquid, the dialysate is introduced into the peritoneal cavity. This liquid will then be evacuated after a determined contact time.
- dialysates most commonly used are composed of a buffer solution (lactate or bicarbonate) at acid pH (5.2-5.5) or physiological (7.4) to which electrolytes (sodium, calcium, magnesium, chlorine) and an osmotic agent (glucose or a glucose polymer, such as "icodextrin" present in the ambulatory peritoneal dialysis solution EXTRANEAL ® sold by BAXTER).
- lactate or bicarbonate at acid pH (5.2-5.5) or physiological (7.4) to which electrolytes (sodium, calcium, magnesium, chlorine) and an osmotic agent (glucose or a glucose polymer, such as "icodextrin" present in the ambulatory peritoneal dialysis solution EXTRANEAL ® sold by BAXTER).
- the electrolytes and the osmotic agent each play a role in the exchange mechanism, according to their respective physicochemical properties: metabolic waste (such as urea or creatinine) or other electrolytes overabundant that the kidney no longer eliminates or insufficiently via the urinary system and the urine, will be extracted from the blood plasma by diffusion of the elements towards the dialysate whose concentration rates of these same elements are lower; - the excess of water, which the kidney normally eliminates for the regulation of the plasma volume, will be attracted by osmolarity; this process is called ultrafiltration; the ultrafiltration rate varies according to the concentration of the dialysate glucose or glucose polymer: the more concentrated the solution, the more water in the body will be captured by the dialysate.
- glucose has the advantage of being relatively safe and inexpensive, it has a number of disadvantages. Because of its small size, glucose rapidly passing through the peritoneum leads to loss of osmotic gradient and loss of ultrafiltration within 2 to 4 hours of infusion.
- dialysate may eventually cause a risk of damage to the peritoneal membrane, forcing the use of this method for a limited time, usually between two and ten years.
- the catheter implanted in the peritoneal cavity is an entry point for germs. Numerous catheter manipulations during the infusion and drainage phases increase the risk of local or general infection. It has been suggested that the ultrafiltration characteristics of peritoneal dialysis solutions may be better by replacing glucose with high molecular weight, such as glucose polymers.
- Standard glucose polymers are produced by acid or enzymatic hydrolysis of starch from cereals or tubers.
- the totally random acid hydrolysis of starch, or its somewhat more orderly enzymatic hydrolysis, provide mixtures of glucose and glucose polymers which have very short molecules, low degree of polymerization (or DP), as well as only very long molecules, high DP.
- the glucose polymers thus have an extremely varied molecular weight.
- European Patent Application EP 207,676 teaches that glucose polymers forming clear and colorless 10% solutions in the blood are preferred.
- water having a weight average molecular weight (Mw) of 5,000 to 100,000 daltons and a number average molecular weight (Mn) of less than 8,000 daltons.
- Such glucose polymers also preferably comprise at least 80% of glucose polymers having a molecular weight of between 5,000 and 50,000 daltons, little or no glucose or less than 3 glucose polymers of DP.
- the preferred glucose polymers are glucose polymers of low polymolecularity index (value obtained by calculating the Mw / Mn ratio).
- This process consists of: acid hydrolyzing a waxy (or waxy) starch milk up to a D.E.sub.E between 8 and 15;
- the excluded starch hydrolyzate is collected during this chromatography step in a weight yield of the order of 60% of The hydrolyzate used in the chromatography step.
- This starch hydrolyzate in question then preferably contains less than 3% of glucose and glucose polymers of DP less than or equal to 3 and less than 0.5% DP glucose polymers greater than 600.
- Stepper peritonitis also described as aseptic, chemical, or culture-negative peritonitis, is typically caused by a chemical irritant or foreign body.
- tests described today in the Pharmacopoeia for the detection of pyrogenic substances are the following: - The test for the detection of bacterial endotoxins, the major components of Gram-negative bacteria (LAL test),
- the pyrogenic rabbit test is based on the indirect detection of pyrogenic substances by measuring an elevation of temperature of the rabbit injected with the product containing these substances (febrile response).
- This test may give rise to false negatives, if the undesirable substance has a too low biological activity or a concentration too low to induce a pyrogenic systemic response.
- LAL test detects only bacterial endotoxins (LPS) as well as ⁇ glucans, components of fungal flora walls.
- DNA Other biological impurities (DNA, 7) are not detected. It is the same for peptidoglycans, major components of the cell membranes of Gram positive bacteria.
- BAXTER proposes to place efforts in the detection of Gram-positive microbial contaminants.
- BAXTER proposes to develop a method based on the detection of peptidoglycans, which are the major components of Gram-positive bacteria membranes, especially in glucose polymers intended for the preparation of solution. for peritoneal dialysis.
- This method consists in carrying out on glucose polymers:
- a quantification of said peptidoglycans If it is determined that the amount of these peptidoglycans sought in the glucose polymers is below a certain threshold (10 ng / ml of a 7.5% solution of glucose polymer, ie 133 ng / g of glucose), these glucose polymers are then used to prepare the peritoneal dialysis solution itself.
- BAXTER offers for the manufacture and use of peritoneal dialysis solutions, a protocol for detecting peptidoglycans in the peritoneal dialysis solution.
- the Applicant Company therefore found that this need could be satisfied by the implementation of a remarkable purification process, combining a number of steps of treatment with activated carbon / granular black, filtration (microfiltration and ultrafiltration) and heat treatment in an arrangement to prevent contamination.
- the process for purifying glucose polymers intended for the production of peritoneal dialysis solutions according to the invention is more particularly characterized in that it comprises: at least one treatment step with activated charcoal and / or granular black,
- At least one ultrafiltration step ensures the virtual absence of contaminants of any kind whatever their size (eg endotoxins, peptidoglycans and ⁇ -glucans).
- This method is applied to glucose polymers for the manufacture of finished peritoneal dialysis solutions, that is, those which will be used for the preparation of the dialysis solution.
- the term "quasi-absence" means a quantification at thresholds much lower than what is described in the Pharmacopoeia tests, i.e.
- high sensitivity test developed and validated by the applicant company means a test developed and validated by the applicant company, adapting the kit SLP-HS single set ref. 293-58301 manufactured and marketed by WAKO Pure Chemical Industries Ltd.
- This test consists of adding the reagent called "SLP-HS” (Silkworm Larvae Plasma-High Sensitivity) reagent prepared from the silkworm plasma, which is capable of: reacting with the peptidoglycans and ⁇ -glucans contained in a polymer solution of glucose prepared at 5% in water (special water for LAL test for example),
- SLP-HS Siliconkworm Larvae Plasma-High Sensitivity
- the SLP-HP test consists of:
- the PG content of the test solution is calculated using the established calibration line. The result is expressed in ng / ml of 5% solution tested then in ng / g of glucose polymer.
- the first of the four means implemented is to use activated charcoal and / or granular black in a particular configuration.
- the residence time in the column is about three hours.
- the percolation is at a rate of the order of 2 m / h at a temperature of about 80 0 C to prevent bacterial contamination.
- the contact between the starch hydrolyzate to be purified with the granular black is countercurrent in the sense that the starch hydrolyzate to be purified firstly comes into contact with the saturated granular black at the bottom of the column.
- the purified starch hydrolyzate is thus recovered at the top of the granular black column, along with the purified granular black.
- the last layer of granular black at the top of the column serves as a "safety barrier".
- This arrangement can be controlled by carrying out “hunting” operations of granular black.
- the column is stopped, the saturated granular black is removed from below, which is replaced by the top with regenerated granular black.
- the saturated granular black is decanted before being regenerated by heat treatment in a hearth furnace. At startup, and for safety reasons, the first m 3 of low solids starch hydrolyzate are decommissioned.
- the monitoring of the lowering of the level of contaminants can be analyzed by taking a certain number of samples (five for example) from the bottom of the column upwards.
- the incoming starch hydrolyzate is mixed with activated carbon (between 0.5% and 1.5% on the dry matter to be treated) at a temperature between 70 and 75 ° C for one hour.
- the starch hydrolyzate is then filtered and analyzed.
- the starch hydrolyzate is then subjected to a treatment of the same nature. This second treatment is the so-called "security" treatment.
- the applicant company recommends using in these two stages activated carbon of different porosity, so as to take into account the variability of the size of the contaminants.
- the applicant company then recommends placing the granular black column at the head of this combination.
- the second of the four means used to purify the glucose polymers for the production of peritoneal dialysis solutions according to the invention consists in using a sterilizing filtration.
- This sterilizing filtration step mainly consists of a membrane filtration with a pore diameter of 0.22 ⁇ m, preceded if necessary by a membrane pre-filtration. with a pore diameter of 0.45 ⁇ m (thus respecting the "sterility test" as described in the European Pharmacopoeia - 6th edition, Chapter 2.6.1 Sterility).
- This step makes it possible to retain any contamination by microorganisms, and in particular acidophilophilic bacteria of the Alicyclobacillus acidocaldarius type, their size being greater than the diameters of the filtration pores.
- the filtration is carried out by several cartridge filters inserted in a vertical housing towards which the syrup is directed.
- These cartridge filters are supplied by the companies PALL or MILLIPORE for example.
- the size of the cartridges can be 10, 20 or 30 inches, and the number of cartridges installed provides a sufficient filtration area to pass a product flow between 1 and 20 1 / minutes / m 2 .
- These cartridge filters have resistance capabilities for continuous work at high temperatures, of the order of 75 ° C and to pass the previously cited flow rate for a period of 700 hours.
- thermophilic flora Working at a temperature above 75 0 C limits any microbiological development, including thermophilic flora.
- This sterilization consists of passing steam 2 bar through the housing for a period of 20 minutes. This sterilization is followed by rinsing with purified water (as defined by the Pharmacopoeia) for a period of 5 minutes.
- filters also have resistance capabilities to certain chemicals used for equipment cleaning operations, including peracetic acid at a concentration of 5%.
- the third of the four means used to purify the glucose polymers for the production of peritoneal dialysis solutions in accordance with the invention consists in using a heat treatment.
- thermophilic microorganisms likely to contaminate the glucose polymers.
- This heat treatment step then consists in heating to a temperature of between 100 and 130 ° C., preferably at a temperature of 120 ° C., for 1 to 5 minutes, preferably 2 minutes.
- This step of treatment at high temperature for a short time has nothing in common with the hours of heat treatment conventionally carried out in the state of the art by boiling reaction medium in order, for example, to denature the proteins (in particular to inactivate the enzymes ).
- the heat treatment according to the invention is carried out using a tubular exchanger in which the chromatographed starch hydrolyzate circulates, and is surrounded by a calender fed by 2 bar steam in order to regulate a temperature therein. of the order of 120 ° C.
- This tubular exchanger being for example manufactured by the company ACTINI, consists of several parts: a product / product energy recovery section between the inlet and the outlet of the zone - a heating section using steam 2 bars
- the length of this exchanger is calculated to guarantee the desired residence time according to the feed rate.
- the feed rate can be between 3000 and
- the fourth of the four means used to purify the glucose polymers for the production of peritoneal dialysis solutions according to the invention is to use ultrafiltration.
- the cut-off threshold is chosen so as to retain any contaminants in the retentate.
- the ultrafiltration membrane then has a cutoff threshold of between 30,000 and 100,000 daltons, preferably of the order of 50,000 daltons.
- the filter surface determines the filtration capacity of the filter. This surface being determined according to the nature of the fluid and the flow rate to be treated.
- the cut-off point makes it possible to retain the microorganisms, and in particular the acid-thermophilic bacteria of the Alicyclobacillus acidocaldarius type, as well as a part of the endotoxins, peptidoglycans and ⁇ -glucans, their size being between 1,000 and 100,000 Daltons.
- the ultrafiltration membranes may be ceramic or organic type. These two types of membranes having a different resistance to temperature, it will be preferred ceramic type membranes that can work at temperatures above 75 0 C.
- This sterilization consists of passing steam 2 bar through the housing for a period of 20 minutes. This sterilization is followed by rinsing with purified water for a period of 20 minutes.
- filters also have resistance to certain chemicals used for cleaning equipment, including peracetic acid at a concentration of 5% and sodium hydroxide at a concentration of 1%.
- the pressure of the feed syrup is between 5 and
- the monitoring of the lowering of the level of contaminants can be analyzed by making periodic withdrawals on the filtrate.
- This fourth means makes it possible, with the other three means, to guarantee in the final product the presence of a possible contaminant of peptidoglycan, endotoxin and / or ⁇ -glucan type at a value lower than the thresholds defined above.
- a first treatment step with activated carbon and / or granular black is performed on the starch hydrolyzate.
- a sterilizing filtration step is performed on the starch hydrolyzate treated with activated charcoal and / or with granular black, before passing it on chromatography. Finally, the chromatography starch hydrolyzate undergoes four successive purification steps:
- This process is then characterized in that one carries out: a) after the production of the 4th batch of finished product, a first cleaning operation which consists of: at least one washing step with water to remove the polymer from glucose,
- a second cleaning operation which consists of:
- At least one washing step with water to remove the glucose polymer at least one detergency step,
- the washing step with water to remove the glucose polymer is applied until a refractometric reading reading of less than 0.5 is obtained.
- the disinfection step consists of a treatment with peracetic acid diluted to 0.05% for at least 10 minutes or consists of a steam treatment at a pressure of 2 bar for at least 20 minutes.
- the detergency step consists of a treatment with sodium hydroxide diluted to 1% for at least 30 minutes.
- the rinsing step with purified water is applied for at least 5 minutes.
- the raw material for obtaining the glucose polymers according to the invention is produced from waxy corn starch in the following manner:
- the activated carbon powder being added at a concentration of between 0.2 and 0.5% on a dry basis is retained on a 10 ⁇ m ceramic filter previously loaded with a filtering agent.
- SEC Steric exclusion chromatographic separation
- the solution which passes through this resin has a temperature between 75 and 85 0 C to 35-45% of MS.
- the duration of each sequence defines the process. In this case, the duration of each sequence is 15 minutes.
- the control is carried out by a molecular weight distribution analysis and the analysis of the chromatographic yield, in the following way: (Quantity of dry matter of the desired fraction) / (Quantity of dry matter of the feed)
- the lower molecular weights interact with the resin and the high molecular weights are eluted with purified water. concentration is carried out by film evaporation falling to an MS of 35 - 45%.
- the atomized product has at its output a 4th moisture less than 6%.
- the product is then cooled in a fluidized air bed comprising 3 cooling zones supplied with air at 40, 30 and 20 ° C.
- the product obtained is then screened over 800 ⁇ m in order to remove the aggregates.
- the determination of the possible contamination of the circuit is carried out by analyzing the content of peptidoglycans and endotoxins on the finished product.
- the levels usually observed and measured on batches of the finished product are for the criteria specified above as follows: Yeasts and molds: 0 / g
- Aerobic germs 0 / g
- Peptidoglycans 1520 ng / g (validated test SLP-HS)
- B. acidocaldarius 1 / g
- This process uses powdered NORIT SX + brand activated charcoal at 0.65% dry / sec and the treatment is applied for a contact time of 1 hour.
- a sterilizing filtration step is then applied with cartridge filters in series marketed by MILLIPORE of 0.45 ⁇ m and 0.22 ⁇ m.
- the finished product "B” then presents the following microbiological results:
- Aerobic germs 0 / g
- Peptidoglycans ⁇ 20 ng / g (validated test SLP-HS)
- Peptidoglycans ⁇ 3 ng / g (validated test SLP-HS) B. acidocaldarius 0 / g
- the purification method according to the invention makes it possible to guarantee a remarkably low level of peptidoglycan contaminant; the two-stage and three-stage purification process does not make it possible, starting from batch "A", to recover a glucose polymer having even a level of peptidoglycan contaminant lower than the threshold value of 8 ng / g which would allow it to use in peritoneal dialysis. It is thus proved that even if one of the lots of glucose polymers were found to be abnormally loaded with peptidoglycans, the purification method according to the invention would make it possible to effectively reduce their content, thereby guaranteeing a contamination content. well below the commonly accepted tolerance.
- the equipment is regularly washed as follows. Here we choose the cleaning of a dissolving tank of raw material (starch hydrolyzate).
- the efficiency of this washing is controlled by a measurement of refractometric reading (LR) on the washing water at the outlet of this tank (LR ⁇ 0.5) - introduction of soda from the manufacturer Solvay at 1% by the same system of CIP for 30 minutes. rinse with water to remove traces of soda.
- LR refractometric reading
- the effectiveness of this rinsing is controlled by a pH measurement on the rinsing water at the outlet of this tank.
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Abstract
Description
Claims
Priority Applications (7)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA2759887A CA2759887C (fr) | 2009-04-30 | 2010-04-29 | Procede de purification de polymeres de glucose destines aux solutions de dialyse peritoneale |
| MX2011011441A MX342304B (es) | 2009-04-30 | 2010-04-29 | Procedimiento de purificacion de polimeros de glucosa destinados a soluciones de dialisis peritoneal. |
| ES10727063T ES2739473T3 (es) | 2009-04-30 | 2010-04-29 | Procedimiento de purificación de polímeros de glucosa destinados a soluciones de diálisis peritoneal |
| US13/266,820 US9353192B2 (en) | 2009-04-30 | 2010-04-29 | Method for purifying glucose polymers for peritoneal dialysis solutions |
| PL10727063T PL2424899T3 (pl) | 2009-04-30 | 2010-04-29 | Sposób oczyszczania polimerów glukozy do roztworów do dializy otrzewnowej |
| CN201080018376.5A CN102421803B (zh) | 2009-04-30 | 2010-04-29 | 用于纯化用于腹膜透析液的葡萄糖聚合物的方法 |
| EP10727063.9A EP2424899B1 (fr) | 2009-04-30 | 2010-04-29 | Procede de purification de polymeres de glucose destines aux solutions de dialyse peritoneale |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR0952879A FR2945043B1 (fr) | 2009-04-30 | 2009-04-30 | Procede de purification de polymeres de glucose destines aux solutions de dialyse peritoneale |
| FR0952879 | 2009-04-30 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2010125315A1 true WO2010125315A1 (fr) | 2010-11-04 |
Family
ID=41396180
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/FR2010/050815 Ceased WO2010125315A1 (fr) | 2009-04-30 | 2010-04-29 | Procede de purification de polymeres de glucose destines aux solutions de dialyse peritoneale |
Country Status (10)
| Country | Link |
|---|---|
| US (1) | US9353192B2 (fr) |
| EP (1) | EP2424899B1 (fr) |
| CN (1) | CN102421803B (fr) |
| CA (1) | CA2759887C (fr) |
| ES (1) | ES2739473T3 (fr) |
| FR (1) | FR2945043B1 (fr) |
| MX (1) | MX342304B (fr) |
| PL (1) | PL2424899T3 (fr) |
| TR (1) | TR201910416T4 (fr) |
| WO (1) | WO2010125315A1 (fr) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2966843A1 (fr) * | 2010-11-03 | 2012-05-04 | Roquette Freres | Procede de decontamination d'hydrolysats d'amidon pour la preparation de polymeres de glucose destines a la dialyse peritoneale |
| WO2012143647A1 (fr) | 2011-04-08 | 2012-10-26 | Roquette Freres | Méthodes de détection de contaminants dans des solutions contenants des polymères de glucose |
| WO2013178931A1 (fr) | 2012-05-29 | 2013-12-05 | Roquette Freres | Méthodes de décontamination des circuits de production de polymères de glucose et d'hydrolysats de polymères de glucose |
| WO2015140477A1 (fr) | 2014-03-21 | 2015-09-24 | Roquette Freres | Procede optimise de decontamination de production de polymeres de glucose et d'hydrolysats de polymeres de glucose |
| CN105203650A (zh) * | 2014-06-27 | 2015-12-30 | 华仁药业股份有限公司 | 一种腹膜透析液中葡萄糖含量的检测方法 |
| WO2016193634A1 (fr) * | 2015-06-04 | 2016-12-08 | Roquette Freres | Procédé optimisé de décontamination de l'amidon utilisé comme matière première pour l'obtention de polymères de glucose destinés à la dialyse péritonéale |
| US11291222B2 (en) | 2013-03-15 | 2022-04-05 | Cargill, Incorporated | Carbohydrate compositions |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2964366A1 (fr) * | 2013-03-05 | 2016-01-13 | Wintershall Holding GmbH | Procédé de filtration d'homopolysaccharides |
| CN103467608B (zh) * | 2013-09-27 | 2015-08-26 | 华仁药业股份有限公司 | 艾考糊精及其制备方法 |
| FR3055898B1 (fr) * | 2016-09-15 | 2018-11-02 | Roquette Freres | Nouveaux polymeres de glucose pour dialyse peritoneale |
| CN109400722A (zh) * | 2018-11-13 | 2019-03-01 | 华仁药业股份有限公司 | 一种用于去除淀粉水解物中肽聚糖的方法 |
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- 2010-04-29 EP EP10727063.9A patent/EP2424899B1/fr active Active
- 2010-04-29 CA CA2759887A patent/CA2759887C/fr active Active
- 2010-04-29 ES ES10727063T patent/ES2739473T3/es active Active
- 2010-04-29 CN CN201080018376.5A patent/CN102421803B/zh active Active
- 2010-04-29 TR TR2019/10416T patent/TR201910416T4/tr unknown
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| EP0667356A1 (fr) * | 1994-02-15 | 1995-08-16 | Roquette FrÀ¨res | Procédé de fabrication d'un hydrolysat d'amidon à faible indice de polymolécularité, hydrolysat d'amidon ainsi obtenu et son utilisation en dialyse péritonéale voir au-dessus |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012059685A1 (fr) * | 2010-11-03 | 2012-05-10 | Roquette Freres | Procédé de décontamination d'hydrolysats d'amidon pour la préparation de polymères de glucose destinés à la dialyse péritonéale |
| US8933219B2 (en) | 2010-11-03 | 2015-01-13 | Roquette Freres | Method for decontaminating starch hydrolysates for the preparation of glucose polymers for peritoneal dialysis |
| FR2966843A1 (fr) * | 2010-11-03 | 2012-05-04 | Roquette Freres | Procede de decontamination d'hydrolysats d'amidon pour la preparation de polymeres de glucose destines a la dialyse peritoneale |
| EP3495816A1 (fr) | 2011-04-08 | 2019-06-12 | Roquette Freres | Methodes de detection de contaminants dans des solutions contenant des polymeres de glucose |
| WO2012143647A1 (fr) | 2011-04-08 | 2012-10-26 | Roquette Freres | Méthodes de détection de contaminants dans des solutions contenants des polymères de glucose |
| WO2013178931A1 (fr) | 2012-05-29 | 2013-12-05 | Roquette Freres | Méthodes de décontamination des circuits de production de polymères de glucose et d'hydrolysats de polymères de glucose |
| US11291222B2 (en) | 2013-03-15 | 2022-04-05 | Cargill, Incorporated | Carbohydrate compositions |
| WO2015140477A1 (fr) | 2014-03-21 | 2015-09-24 | Roquette Freres | Procede optimise de decontamination de production de polymeres de glucose et d'hydrolysats de polymeres de glucose |
| CN105203650A (zh) * | 2014-06-27 | 2015-12-30 | 华仁药业股份有限公司 | 一种腹膜透析液中葡萄糖含量的检测方法 |
| CN107709569A (zh) * | 2015-06-04 | 2018-02-16 | 罗盖特兄弟公司 | 净化用作腹膜透析的葡萄糖聚合物原料的淀粉的优化方法 |
| FR3037063A1 (fr) * | 2015-06-04 | 2016-12-09 | Roquette Freres | Procede optimise de decontamination de l'amidon utilise comme matiere premiere pour l'obtention de polymeres de glucose destines a la dialyse peritoneale |
| CN107709569B (zh) * | 2015-06-04 | 2021-07-09 | 罗盖特兄弟公司 | 净化用作腹膜透析的葡萄糖聚合物原料的淀粉的优化方法 |
| WO2016193634A1 (fr) * | 2015-06-04 | 2016-12-08 | Roquette Freres | Procédé optimisé de décontamination de l'amidon utilisé comme matière première pour l'obtention de polymères de glucose destinés à la dialyse péritonéale |
Also Published As
| Publication number | Publication date |
|---|---|
| PL2424899T3 (pl) | 2019-10-31 |
| CN102421803A (zh) | 2012-04-18 |
| TR201910416T4 (tr) | 2019-08-21 |
| EP2424899A1 (fr) | 2012-03-07 |
| FR2945043B1 (fr) | 2019-07-26 |
| CA2759887A1 (fr) | 2010-11-04 |
| ES2739473T3 (es) | 2020-01-31 |
| US9353192B2 (en) | 2016-05-31 |
| CN102421803B (zh) | 2014-04-02 |
| CA2759887C (fr) | 2017-10-03 |
| US20120046460A1 (en) | 2012-02-23 |
| MX2011011441A (es) | 2012-02-21 |
| EP2424899B1 (fr) | 2019-05-08 |
| MX342304B (es) | 2016-09-26 |
| FR2945043A1 (fr) | 2010-11-05 |
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