EP0971040A1 - Procédé de fabrication de fructose cristallisé - Google Patents
Procédé de fabrication de fructose cristallisé Download PDFInfo
- Publication number
- EP0971040A1 EP0971040A1 EP98202278A EP98202278A EP0971040A1 EP 0971040 A1 EP0971040 A1 EP 0971040A1 EP 98202278 A EP98202278 A EP 98202278A EP 98202278 A EP98202278 A EP 98202278A EP 0971040 A1 EP0971040 A1 EP 0971040A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- fructose
- crystals
- syrup
- crystallized
- weight
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C13—SUGAR INDUSTRY
- C13K—SACCHARIDES OBTAINED FROM NATURAL SOURCES OR BY HYDROLYSIS OF NATURALLY OCCURRING DISACCHARIDES, OLIGOSACCHARIDES OR POLYSACCHARIDES
- C13K11/00—Fructose
Definitions
- the subject of the present invention is a method of manufacture of crystalline fructose by crystallization / solidification of a purified and concentrated syrup of fructose.
- US Patent 2,588,449 describes a process for the preparation of crystals of fructose dihydrate C 6 H 12 O 6 .2H 2 O, by cooling and seeding ("graining") of a fructose solution.
- the product obtained, fructose dihydrate is however only stable at relatively low temperatures and therefore cannot be stored or transported without special precautions to prevent it from liquefying.
- the object of the present invention is to provide a new fructose crystallization process, remedying problems of the prior art, and thus offer a form of crystalline fructose which can be used commercially.
- This new process for making crystallized fructose involving the solidification of a hot solution and fructose concentrate after seeding the solution by means of fructose crystals, is characterized by the use of a fructose solution resulting from a fresh fructose syrup freshly prepared by melting fructose dihydrate crystals, concentrated by vacuum evaporation to a dry matter content greater than 96% by weight, and preferably greater than 97% by weight.
- the fructose solution used for sowing has preferably a preferred temperature between 50 and 100 ° C, ideally between 80 and 95 ° C.
- sowing is preferably done by means of 5 to 30% by weight of crystallized fructose with particle size fine, in particular a particle size of less than 500 ⁇ m, of preference less than 250 ⁇ m (for example 50 ⁇ m).
- the delay between the melting of the fructose dihydrate to prepare the initial syrup and concentration of this syrup to a dry matter content greater than 96% by weight, preferably greater than 97% by weight, is preferably less than 24 hours, more particularly less than 8 hours, and ideally less than half an hour.
- Obtaining fructose dihydrate crystals consists of progressive cooling of an aqueous solution of glucose and fructose whose total sugar content is between 45 and 85% and, in dry matter, the fructose concentration is between 60 and 100%.
- the temperature of the mass thus grained is lowered gradually and is thus kept in a fructose supersaturation zone such as crystals present gradually grow by limiting however the appearance of new crystals.
- the mass of syrup containing the crystals is conveyed to a continuous or discontinuous centrifuge similar to those used in sweets. Any other physical method solid / liquid separation can be considered.
- the mother liquors of crystallization consisting of water and sugars from the initial solution that have not crystallized, can be subjected to a new stage of crystallization as described above.
- the fructose dihydrate crystals thus separated, can be washed so as to eliminate the film as much as possible of mother liquor surrounding them therefore increasing the purity of fructose at values between 90% and 100% and preferably between 97.5% and 100%. They are then melted, preferably at temperatures above 20 ° C. If there is no addition of water during melting, the syrup obtained from properly washed crystals contains 83% sugars and 17% water. The dry matter of such syrup contains only a few traces of other sugars present in the mother liquors.
- the 83% dry matter syrup obtained according to Example I is concentrated at temperatures of the order of 65 to 100 ° C under pressures below 60 mm of mercury, during a delay less than 30 minutes, even less than 15 minutes.
- concentration pressure the more the maximum temperature required will be low thus reducing the risks of coloring the concentrated syrup.
- the dry matter of the concentrated syrup varies between 96.0 and 100.0%.
- the syrup is relatively viscous and can then be pumped for the consecutive crystallization / solidification.
- the concentrated and viscous syrup obtained in Example II is then kept in a mixer at a temperature included between 80 and 95 ° C and seeded using 10 to 25% of crystallized fructose with a very fine particle size ( ⁇ 200 ⁇ m). This seeding can be done using fructose obtained by the present process, very ground finely.
- the medium is then agitated so as to ensure optimal dispersal of germs within it.
- the middle consisting of a very viscous whitish mass is then poured out of the mixer and stored in an oven, the temperature is set between 55 and 75 ° C depending on the content residual water, amount of germs and condition of the mutarotation reaction. Time to stay in the oven depends on these same factors.
- the cistallized mass thus obtained is roughly crushed using a grinder.
- the particles obtained can then be dried between 50 and 75 ° C (from preferably under dry air flow) in order to further decrease the water content. Fine grinding can then be carried out. If the initial mass is dry enough to be finely ground, drying following coarse ground can be avoided.
- the product obtained consists of particles (including the particle size depends on fine grinding) themselves formed small fructose crystals agglomerated between them. In order to eliminate as much water as possible, final drying at a temperature between 50 and 75 ° C takes place at end of fine grinding.
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Biochemistry (AREA)
- Organic Chemistry (AREA)
- Saccharide Compounds (AREA)
- Jellies, Jams, And Syrups (AREA)
Abstract
Description
Claims (10)
- Procédé de fabrication de fructose cristallisé par solidification d'une solution chaude et concentrée de fructose suite à l'ensemencement de la solution au moyen de cristaux de fructose, caractérisé en ce que la solution de fructose utilisée pour l'ensemencement résulte d'un sirop de fructose pur fraíchement préparé par la fonte de cristaux de dihydrate de fructose, concentré par évaporation sous vide jusqu'à une teneur en matière sèche supérieure à 96% en poids.
- Procédé de fabrication de fructose cristallisé selon la revendication 1, caractérisé en ce que la solution de fructose utilisée pour l'ensemencement a une température comprise entre 50 et 100° C.
- Procédé de fabrication de fructose cristallisé selon l'une ou l'autre des revendications précédentes, caractérisé on ce que l'ensemencement se fait au moyen de 5 à 30% en poids de fructose cristallisé de granulométrie fine.
- Procédé de fabrication de fructose cristallisé selon la revendication 3, caractérisé en ce que les cristaux d'ensemencement ont une granulométrie inférieure à 500 µm.
- Procédé de fabrication de fructose cristallisé selon l'une ou l'autre des revendications précédentes, caractérisé on ce que le délai entre la fonte des cristaux de dihydrate de fructose pour préparer le sirop initial et la concentration de ce sirop à une teneur en matière sèche supérieure à 96% est inférieur à 24 heures.
- Procédé de fabrication de fructose cristallisé selon l'une ou l'autre des revendications 1 à 4, caractérisé en ce que le délai entre la fonte des cristaux de dihydrate de fructose pour préparer le sirop initial et la concentration de ce sirop à une teneur en matière sèche supérieure à 96% est inférieur à 8 heures.
- Procédé de fabrication de fructose cristallisé selon l'une ou l'autre des revendications 1 à 4, caractérisé on ce que le délai entre la fonte des cristaux de dihydrate de fructose pour préparer le sirop initial et la concentration de ce sirop à une teneur en matière sèche supérieure à 96 % est inférieur à une demi heure.
- Procédé de fabrication de fructose cristallisé à partir de sirop contenant du fructose et eventuellement d'autres substances, par purification cette solution de fructose et par solidification de celle-ci par ensemencement au moyen de cristaux de fructose, caractérisé par les étapes successives suivantes :ensemencement au moyen de cristaux de fructose dihydrate de la solution de fructose ayant une teneur totale en sucre comprise entre 45 et 85% en poids et une teneur en fructose supérieure à 60% en poids de la matière sèche, à une temperature entre 10 et - 10° C, maintien de la solution dans une zone de sursaturation en fructose par abaissement progressif de la température jusqu'à obtention de cristaux de taille souhaitée, etséparation des cristaux obtenus de la solution mère de manière à obtenir des cristaux de fructose dihydrate ayant une teneur en fructose comprise ente 95 et 100% en poids de la matière sèche;fonte des cristaux récoltés en un sirop ayant une teneur d'environ 83% en poids de sucre et environ 17% d'eau;concentration du sirop par évaporation d'eau sous une pression réduite jusqu'à une teneur en matière sèche entre 96 et 100% en poids;ensemencement du sirop ainsi obtenu au moyen de 5 à 30% en poids de fructose cristallisé,maintien de la masse obtenue à une température entre 55 et 75° C jusqu'à obtention d'une masse non collante et cassante, etconcassage, sèchage et broyage de cette masse en particules formées de cristaux de fructose agglomérés.
- Procédé de fabrication de fructose cristallisé selon l'une ou l'autre des revendications précédentes, caractérisé en ce quela solution de fructose utilisée pour l'ensemencement au moyen de cristaux de fructose a une température comprise entre 80 et 95° C.,la solution de fructose utilisée pour l'ensemencement au moyen de cristaux de fructose a été concentrée par évaporation sous vide,la solution de fructose utilisée pour l'ensemencement au moyen de cristaux de fructose a été concentrée jusqu'à une teneur en matière sèche supérieure à 96% en poids, et / ou queles cristaux d'ensemencement ont une granulométrie inférieure à 250 µm.
- Fructose cristallisé, essentiellement constitué de fructose beta-D-fructopyranose, ayant de faibles teneurs en autres tautomères de fructose, tel que pouvant résulter d'un procédé de solidification d'une solution chaude et concentrée de fructose suite à l'ensemencement de la solution au moyen de cristaux de fructose, caractérisé en ce que la solution de fructose utilisée pour l'ensemencement résulte d'un sirop de fructose pur fraíchement préparé par la fonte de cristaux de dihydrate de fructose, concentré par évaporation sous vide jusqu'à une teneur en matière sèche entre 96 et 100% en poids, que la solution de fructose utilisée pour l'ensemencement a une température comprise entre 80 et 100° C, que l'ensemencement se fait au moyen de 5 à 30% en poids de fructose cristallisé anhydre de granulométrie inférieure à 500 µm, et que le délai entre la fonte des cristaux de dihydrate de fructose pour préparer le sirop initial et la concentration de ce sirop à une teneur en matière sèche supérieure à 97% est inférieur à une demi heure.
Priority Applications (10)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE69818023T DE69818023T2 (de) | 1998-07-08 | 1998-07-08 | Verfahren zur Herstellung von Kristalfruktose |
DK98202278T DK0971040T3 (da) | 1998-07-08 | 1998-07-08 | Fremgangsmåde til fremstilling af krystalliseret fructose |
AT98202278T ATE249524T1 (de) | 1998-07-08 | 1998-07-08 | Verfahren zur herstellung von kristalfruktose |
ES98202278T ES2206826T3 (es) | 1998-07-08 | 1998-07-08 | Procedimiento de fabricacion de fructosa cristalizada. |
EP98202278A EP0971040B1 (fr) | 1998-07-08 | 1998-07-08 | Procédé de fabrication de fructose cristallisé |
PCT/EP1999/004732 WO2000003040A1 (fr) | 1998-07-08 | 1999-07-05 | Procede de fabrication de fructose cristallise |
IL14064099A IL140640A (en) | 1998-07-08 | 1999-07-05 | Method for making crystallized fructose |
JP2000559260A JP2002520030A (ja) | 1998-07-08 | 1999-07-05 | 結晶フルクトースの製造方法 |
US09/743,157 US6607603B1 (en) | 1998-07-08 | 1999-07-05 | Method for making crystallized fructose |
ZA200100133A ZA200100133B (en) | 1998-07-08 | 2001-01-05 | Method for making crystallised fructose. |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP98202278A EP0971040B1 (fr) | 1998-07-08 | 1998-07-08 | Procédé de fabrication de fructose cristallisé |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0971040A1 true EP0971040A1 (fr) | 2000-01-12 |
EP0971040B1 EP0971040B1 (fr) | 2003-09-10 |
Family
ID=8233899
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP98202278A Expired - Lifetime EP0971040B1 (fr) | 1998-07-08 | 1998-07-08 | Procédé de fabrication de fructose cristallisé |
Country Status (10)
Country | Link |
---|---|
US (1) | US6607603B1 (fr) |
EP (1) | EP0971040B1 (fr) |
JP (1) | JP2002520030A (fr) |
AT (1) | ATE249524T1 (fr) |
DE (1) | DE69818023T2 (fr) |
DK (1) | DK0971040T3 (fr) |
ES (1) | ES2206826T3 (fr) |
IL (1) | IL140640A (fr) |
WO (1) | WO2000003040A1 (fr) |
ZA (1) | ZA200100133B (fr) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2292803B1 (fr) | 2009-07-07 | 2013-02-13 | DuPont Nutrition Biosciences ApS | Procédé de séparation |
WO2013049424A1 (fr) * | 2011-09-28 | 2013-04-04 | Wisconsin Alumni Research Foundation | Conversion catalytique de la cellulose en carburants et en produits chimiques avec des acides boroniques |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2588449A (en) * | 1950-03-03 | 1952-03-11 | Us Agriculture | Levulose dihydrate |
US3513023A (en) * | 1966-04-29 | 1970-05-19 | Boehringer Mannheim Gmbh | Process for the production of crystalline fructose |
GB1206040A (en) * | 1967-12-21 | 1970-09-23 | Boehringer Mannheim Gmbh | Process and device for the recovery of crystalline fructose from methanolic solution |
US4199373A (en) * | 1979-04-13 | 1980-04-22 | Chimicasa Gmbh | Process for the manufacture of crystalline fructose |
US5047088A (en) * | 1989-06-30 | 1991-09-10 | A. E. Staley Manufacturing Company | Method for crystallization of fructose |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3883365A (en) * | 1972-01-04 | 1975-05-13 | Suomen Sokeri Oy | PH adjustment in fructose crystallization for increased yield |
GB8506482D0 (en) * | 1985-03-13 | 1985-04-17 | Tate & Lyle Plc | Sugar process |
-
1998
- 1998-07-08 DK DK98202278T patent/DK0971040T3/da active
- 1998-07-08 EP EP98202278A patent/EP0971040B1/fr not_active Expired - Lifetime
- 1998-07-08 ES ES98202278T patent/ES2206826T3/es not_active Expired - Lifetime
- 1998-07-08 DE DE69818023T patent/DE69818023T2/de not_active Expired - Fee Related
- 1998-07-08 AT AT98202278T patent/ATE249524T1/de not_active IP Right Cessation
-
1999
- 1999-07-05 US US09/743,157 patent/US6607603B1/en not_active Expired - Fee Related
- 1999-07-05 IL IL14064099A patent/IL140640A/xx not_active IP Right Cessation
- 1999-07-05 JP JP2000559260A patent/JP2002520030A/ja not_active Ceased
- 1999-07-05 WO PCT/EP1999/004732 patent/WO2000003040A1/fr active Search and Examination
-
2001
- 2001-01-05 ZA ZA200100133A patent/ZA200100133B/en unknown
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2588449A (en) * | 1950-03-03 | 1952-03-11 | Us Agriculture | Levulose dihydrate |
US3513023A (en) * | 1966-04-29 | 1970-05-19 | Boehringer Mannheim Gmbh | Process for the production of crystalline fructose |
GB1206040A (en) * | 1967-12-21 | 1970-09-23 | Boehringer Mannheim Gmbh | Process and device for the recovery of crystalline fructose from methanolic solution |
US4199373A (en) * | 1979-04-13 | 1980-04-22 | Chimicasa Gmbh | Process for the manufacture of crystalline fructose |
US5047088A (en) * | 1989-06-30 | 1991-09-10 | A. E. Staley Manufacturing Company | Method for crystallization of fructose |
Also Published As
Publication number | Publication date |
---|---|
JP2002520030A (ja) | 2002-07-09 |
ZA200100133B (en) | 2001-07-23 |
DE69818023D1 (de) | 2003-10-16 |
DK0971040T3 (da) | 2003-12-08 |
IL140640A0 (en) | 2002-02-10 |
US6607603B1 (en) | 2003-08-19 |
ES2206826T3 (es) | 2004-05-16 |
DE69818023T2 (de) | 2004-07-08 |
EP0971040B1 (fr) | 2003-09-10 |
IL140640A (en) | 2005-11-20 |
ATE249524T1 (de) | 2003-09-15 |
WO2000003040A1 (fr) | 2000-01-20 |
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