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Production of resistant starch product

A starch and product technology, applied in the field of resistant starch product production, can solve problems such as high cost

Inactive Publication Date: 2010-03-03
TATE & LYLE INGREDIENTS AMERICAS INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, past attempts to produce such starches have encountered one or more problems, such as high cost

Method used

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  • Production of resistant starch product
  • Production of resistant starch product
  • Production of resistant starch product

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] Preparation of heat / moisture treated resistant starch:

[0042] 250 lb regular dent corn starch and 1420 lb water were added to the vessel to create a 15% starch slurry. The starch slurry was jet cooked at approximately 149°C at a feed rate of approximately 2.0 gpm, and the resulting paste was quickly transferred to a tank maintained at approximately 88°C with agitation. As the dent cornstarch paste enters the tank, a total of approximately 8,000 GTU / lb starch of 4-alpha-glucanotransferase (obtained from Novozymes ). The mixture was reacted at 88° C. for 3 hours with stirring. Dilute sulfuric acid was added to adjust the pH to 3.8-3.9 and the reactor contents were rapidly cooled to approximately 55°C by pumping through a heat exchanger into a stirred tank maintained at 55°C. 0.1 ml / 100 g of starch of isoamylase obtained from Hayashibara Co. was added to the slurry, and the enzyme was reacted at 55°C for 16 hours while maintaining pH 3.8-3.9. The slurry was then jet ...

Embodiment 2

[0050] Preparation of resistant starch:

[0051]250 lbs of regular dent corn starch were added to sufficient water to obtain a 17.5% starch slurry. The starch slurry was jet cooked at approximately 149°C at a feed rate of approximately 2.0 gpm, and the resulting paste was quickly transferred to a tank maintained at approximately 88°C with agitation. 4-alpha-glucanotransferase (obtained from Novozymes) was added to the dent cornstarch paste as it entered the tank. A total of approximately 8,000 GTU / lb was added over the time the mash was pumped into the tank. The mixture was reacted at 88° C. for 3 hours with stirring. Dilute sulfuric acid was added to adjust the pH to 3.8-3.9 and the reactor contents were rapidly cooled to approximately 55°C by pumping through a heat exchanger into a stirred tank maintained at 55°C. 0.1 ml / 100 g of starch of isoamylase obtained from Hayashibara Co. was added to the slurry, and the enzyme was reacted at 55°C for 16 hours while maintaining pH...

Embodiment 3

[0057] Preparation of material with mostly "A" crystals

[0058] 250 lbs of regular dent corn starch was added to sufficient water to produce a 17.5% starch slurry. The starch slurry was jet cooked at approximately 150°C at a feed rate of approximately 2 gpm, and the resulting paste was quickly transferred to a tank maintained at approximately 88°C with agitation. 2400 GTU / lb of starch 4-alpha-glucanotransferase (obtained from Novozymes) was added to the dent cornstarch paste throughout the time the paste was pumped into the tank. The mixture was reacted at 88° C. for 3 hours with stirring. Dilute sulfuric acid was added to adjust the pH to 3.8-3.9 and the reactor contents were rapidly cooled to approximately 55°C by pumping through a heat exchanger into a stirred tank maintained at 55°C. 0.1 ml / 100 g of starch of isoamylase obtained from Hayashibara Co. was added to the slurry, and the enzyme was reacted at 55°C for 16 hours while maintaining pH 3.8-3.9. The slurry was the...

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Abstract

A process for producing a starch comprises treating a feed starch that comprises amylopectin with glucanotransferase to produce a chain-extended starch, treating the chain- extended starch with a debranching enzyme to produce a starch product that comprises amylose fragments, crystallizing at least part of the starch product, heating the starch product in the presence of moisture, treating the starch product with alpha-amylase, and washing the starch product to remove at least some non-crystallized starch. The product of this process has a relatively high total dietary fiber content.

Description

Background of the invention [0001] Starch contains two polysaccharides: amylose and amylopectin. Amylose is generally a linear polymer containing glucose monomers linked by alpha 1-4 glycosidic linkages. Amylopectin is a branched polymer in which many glucose monomers are linked by α1-4 glycosidic linkages, but some are linked by α1-6 glycosidic linkages. [0002] Alpha amylase is an enzyme present in the human body and hydrolyzes the alpha 1-4 linkages in starch, thus enabling starch digestion. In some cases, it is desirable to produce starches that are resistant to hydrolysis by alpha amylases, for example, to reduce the caloric value of the starch, or to increase its dietary fiber content. However, past attempts to produce such starches have encountered one or more problems, such as high cost. [0003] Amylase resistant starches are usually produced from high amylopectin starches, which are usually more expensive. There is a need for an improved process for the producti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C12P19/18C12P19/16C12P19/14A23L1/09
CPCA23L1/095C12P19/16A23V2002/00C12P19/18C13K1/08C13B30/02C12P19/14A23L29/35A23V2200/126A23V2200/242A23V2250/5118
Inventor P·A·利驰芒德E·A·马里恩T·A·诶勒斯A·埃文斯韩献忠S·艾哈迈德D·W·哈里斯
Owner TATE & LYLE INGREDIENTS AMERICAS INC
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