Degraded polysaccharide derivatives

• US 5,569,483 A
• Filed: 06/07/1994
• Issued: 10/29/1996
• Est. Priority Date: 02/10/1989
• Status: Expired due to Fees

• Current Assignee: Alko Group Ltd.
• Original Assignee: Alko Group Ltd.
• Inventors: Lindley, Michael, Bagley, Lindsey, Bosdet, Sarah, Lahtinen, Tarja, Rha, ChoKyun, Timonen, Maritta, Turunen, Marja, Vaara, Martti, Vaara, Timo
• Primary Examiner(s): WONG, LESLIE A
• Application Number:
  US08/255,181
• Time in Patent Office: 875 Days
• Field of Search: 426/48, 426/531, 426/549, 426/658, 426/659, 426/660, 426/804, 426/601, 426/603, 426/49, 426/52, 426/89, 426/103, 426/573, 426/574, 426/575, 426/576, 426/577, 426/578, 426/658 , 426/659, 426/801, 536/56, 536/84, 536/85, 536/86, 536/88, 536/89, 127/37
• US Class Current: 426/658
• CPC Class Codes: A21D 2/18 Carbohydrates
• CPC Class Codes: A23D 7/0056 Spread compositions
• CPC Class Codes: A23D 7/015 Reducing calorie content; Reducing fat content , e.g. "halvarines"
• CPC Class Codes: A23G 2200/06 containing beet sugar or cane sugar if specifically mentioned or containing other carbohydrates, e.g. starches, gums, alcohol sugar, polysaccharides, dextrin or containing high or low amount of carbohydrate
• CPC Class Codes: A23G 3/343 Products for covering, coating, finishing, decorating
• CPC Class Codes: A23G 3/42 characterised by the carbohydrates used, e.g. polysaccharides containing dairy products A23G3/46
• CPC Class Codes: A23G 3/48 containing plants or parts thereof, e.g. fruits, seeds, extracts containing gums A23G3/42
• CPC Class Codes: A23L 29/212 Starch; Modified starch; Starch derivatives, e.g. esters or ethers containing starch hydrolysates, e.g. dextrin, A23L29/30
• CPC Class Codes: A23L 29/219 Chemically modified starch; Reaction or complexation products of starch with other chemicals
• CPC Class Codes: A23L 29/231 Pectin; Derivatives thereof
• CPC Class Codes: A23L 29/238 from seeds, e.g. locust bean gum or guar gum starch A23L29/212; pectin A23L29/231
• CPC Class Codes: A23L 29/25 Exudates, e.g. gum arabic, gum acacia, gum karaya or tragacanth
• CPC Class Codes: A23L 29/256 from seaweeds, e.g. alginates, agar or carrageenan
• CPC Class Codes: A23L 29/262 Cellulose; Derivatives thereof, e.g. ethers
• CPC Class Codes: A23L 29/269 of microbial origin, e.g. xanthan or dextran
• CPC Class Codes: A23L 29/272 Gellan
• CPC Class Codes: A23L 29/275 of animal origin, e.g. chitin
• CPC Class Codes: A23L 29/35 Degradation products of starch, e.g. hydrolysates, dextrins; Enzymatically modified starches
• CPC Class Codes: A23L 33/21 Addition of substantially indigestible substances, e.g. dietary fibres
• CPC Class Codes: A23L 33/24 Cellulose or derivatives thereof
• CPC Class Codes: C08B 11/20 : Post-etherification treatments of chemical or physical type, e.g. mixed etherification in two steps, including purification
• CPC Class Codes: C08B 15/02 : Oxycellulose; Hydrocellulose; Cellulosehydrate, e.g. microcrystalline cellulose
• CPC Class Codes: C12P 19/14 : produced by the action of a carbohydrase (EC 3.2.x), e.g. by alpha-amylase , e.g. by cellulase, hemicellulase
• CPC Class Codes: Y10S 426/801 : Pediatric

Abstract

A degradation product of a polysaccharide derivative comprising a mixture of oligomers of the polysaccharide derivative, the majority of said oligomers having a molecular weight such that the oligomer conforms to a rod-like configuration.

Claims

1. An enzymatically degraded product of a cellulose derivative comprising of a mixture of oligomers of the cellulose derivative, a majority of said oligomers having an average degree of polymerization of between about 5 and about 100.

2. The degradation product of claim 1 wherein the degradation product consists essentially of the mixture of oligomers.

3. The degradation product of claim 1 wherein the cellulose derivative is selected from the group consisting of carboxymethyl cellulose, methyl cellulose, hydroxypropyl cellulose, methylethyl cellulose, hydroxypropylmethyl cellulose, hydroxymethylethyl cellulose and mixtures thereof.

4. The degradation product of claim 1 wherein the degradation product has sufficient water solubility to provide solutions containing at least about 40 weight percent solids.

5. The degradation product of claim 1 wherein the degradation product has a viscosity of less than about 33 milli-pascals-second in a 20 percent solution by weight.

6. The degradation product of claim 1 wherein the mixture of oligomers has an average mlecular weight of less than about 15,000 daltons.

7. The degradation product of claim 1 wherein a majority of said oligomers has an average degree of polymerization of between about 5 and about 70.

8. The degradation product of claim 1 wherein a majority of said oligomers has an average degree of polymerization of between about 5 and about 50.

9. The degradation product of claim 1 wherein said mixture of oligomers contains less than about 25% by weight of monosaccharides, disaccharides or mixtures thereof.

10. The degradation product of claim 1 wherein the mixture of oligomers contains less than about 10% by weight of monosaccharides, disaccharides or mixtures thereof.

11. The degradation product of claim 1 wherein the mixture of oligomers have molecular weights such that the polydispersity index of the mixture is less than about two.

12. The degradation product of claim 1 wherein a majority of said oligomers have a rod-like configuration.

13. The degradation product of claim 1 wherein the mixture of oligomers has a Mark-Horiwink exponent from about 1.5 to about 2.5 at an NaCl concentration of 0.0005N to 0.5N.

14. A method for enzymatically producing a mixture of oligomers from a cellulose derivative comprising:

selecting a cellulose derivative for degradation into a mixture of oligomers; and

degrading the cellulose derivative with an enzyme into a mixture of oligomers of the cellulose derivative such that a majority of said oligomers have a degree of polymerization between about 5 and about 100.

15. The method of claim 14 wherein the cellulose derivative is enzymatically degraded such that a majority of said oligomers have a degree of polymerization of between about 5 and about 70.

16. The method of claim 14 wherein the cellulose derivative is enzymatically degraded such that a majority of said oligomers have a degree of polymerization of between about 5 and 50.

17. The method of claim 14 wherein the cellulose derivative is enzymatically degraded such that the mixture of oligomers has a sufficient water solubility to provide solutions containing at least about 40 weight percent solids.

18. The method of claim 14 wherein the cellulose derivative is enzymatically degraded such that the mixture of oligomers has a viscosity of less than about 33 milli-pascals-second in a 20 percent solution by weight.

19. The method of claim 14 wherein the cellulose derivative is selected to have at least one substituent selected from the group consisting of carboxymethyl, methyl, hydroxypropyl, methylethyl, hydroxymethylethyl and hydroxypropylmethyl.