Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Starch/carboxylated polymer composites

a technology of carboxylated polymer and starch, which is applied in the field of starch/carboxylated polymer composites, can solve the problems of inability to fully absorb starch, rapid breakdown of initial high viscosity, and inability to withstand high temperature and humidity,

Inactive Publication Date: 2006-12-07
BRUNOB II BV
View PDF7 Cites 9 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

This patent is about a new process for making a type of starch that can be used in industrial and food products. This starch is mixed with a special polymer and then dried to form a composite. The composite has properties that make it similar to traditional chemical crosslinking, but can be adjusted to have different properties. The resulting products have improved stability, texture, and viscosity, and can be used in applications where they need to freeze and thaw.

Problems solved by technology

Swollen, hydrated starch granules, however, are quite fragile.
Shear or conditions of extreme pH also tend to disrupt and fragment the granules, so that the starch polymers dissociate and become solubilized, leading to a rapid breakdown of the initially high viscosity.
Because of the resultant increase in viscosity caused by the partial gelatinization, the process is limited to relatively low solids contents and drying becomes an undesirably energy-intensive process.
Further, since gelatinization disrupts the starch granule, solutions of the xanthan / starch compositions are unable to maintain a satisfactorily high viscosity or provide delayed gelatinization during cook-out.
However, both of these systems require high amounts, greater than 5% by weight, of the expensive carboxylated polymer.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Starch/carboxylated polymer composites
  • Starch/carboxylated polymer composites
  • Starch/carboxylated polymer composites

Examples

Experimental program
Comparison scheme
Effect test

example 1

Preparation of a Starch / Carboxylated Polymer Composite

[0040] A 1:100 xanthan:waxy corn starch composite was prepared by air drying, followed by heat treatment in a pre-heated oven according to the following procedure.

[0041] Xanthan (25 g) was added to 2.5 litres of de-ionized water and the mixture stirred using a mechanical paddle (Baldor Electric Co., Electric Lab Stirrer with a strade blade impeller) for more than 1 hour, until the solution is fully hydrated. Starch powder (1666 g) was added to the 1% xanthan solution and the slurry stirred for 1 hour in a Ross Mixer. Additional starch (834 g) was added and stirred for a further 1 hour in the Ross Mixer. The mixture was then air-dried until the resultant powder had less than 20% moisture content (moisture level measured using a CSC Scientific Digital Moisture Balance). The powder was ground and filtered through a 60 mesh size screen.

[0042] The ground material was heated at a temperature of 120° C. for varying times of between ...

example 2

Effect of Carboxylated Polymer:Starch Ratio.

[0044] Xanthan:waxy corn starch (1:20, 1:100 and 1:200) composites were prepared according to the procedure detailed in Example 1, varying only the relative amount of xanthan and starch used for each sample. The level of

inhibition for each sample was then measured according to Procedure A.

[0045] As is shown by Graph 2, samples containing higher levels of xanthan showed progressively greater degrees of inhibition.

example 3

Effect of Types of Carboxylated Polymer Upon the Composite

[0046] Three samples of 1:100 carboxylated polymer:starch composites were prepared as described in Example 1. In one sample, the polycarboxylated polymer was xanthan, in the second,

carboxymethylcellulose and in the third, a 50:50 combination of xanthan and carboxymethylcellulose. Each composite was heat treated for 4 hours at 120° C.

[0047] Composites made with different polycarboxylated polymers had different viscosity profiles. For example, as Graph 3 demonstrates, unlike the composites containing xanthan, the carboxymethylcellulose composite possessed a delayed viscosity increase.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
temperaturesaaaaaaaaaa
temperaturesaaaaaaaaaa
temperaturesaaaaaaaaaa
Login to View More

Abstract

This invention relates to an inhibited non-solubilized granular starch modified by less than 5% of a carboxylated polymer. In addition, a process is provided wherein a non-solubilized, substantially granular starch is mixed with a carboxylated polymer, dried to form a starch / carboxylated polymer blend and then physically treated to form a starch / carboxylated polymer composite. Further, this invention relates to the improved industrial and food products prepared from these starch / carboxylated polymer composites.

Description

[0001] This application claims priority from provisional application 60 / 309,063 filed Jul. 31, 2001.FIELD OF THE INVENTION [0002] This invention relates to an inhibited non-solubilized granular starch modified by less than 5% of a carboxylated polymer. In addition, a process is provided wherein a non-solubilized, substantially granular starch is mixed with a carboxylated polymer, dried to form a starch / carboxylated polymer blend and then physically treated to form a starch / carboxylated polymer composite. Further, this invention relates to the improved industrial and food products prepared from these starch / carboxylated polymer composites. BACKGROUND [0003] Native and modified starches have been used for many years in the food industry to provide processed foods with improved product appearance and increased consumer appeal. Starches can impart desirable properties to food products, ranging from shape retention and sliceability to desirably grainy and pulpy textures in sauces and dre...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(United States)
IPC IPC(8): D21H19/54A23L1/0522A23L29/262A23L29/269C08B30/12C08B31/00C08L3/00C08L3/02
CPCA23L1/05223A23L1/0534A23L1/0541A23V2002/00C08B31/00C08L3/00C08L3/02C08L2666/02A23V2250/5118A23V2250/5086A23V2250/51082A23L29/219A23L29/262A23L29/27
Inventor RICHARDSON, PAUL H.SKORGE, ROBERT A.KOXHOLT, MAXIMILIAN M. R.
Owner BRUNOB II BV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com