Modified Starch
Primarily two types of Modified Starch is manufactured:
1. Modified Starch (Cationic)
2. Modified Starch (Oxidised)
A brief about Modified Starch:
What is Modified Starch?
Modified starch, also called starch derivatives, are prepared by physically, enzymatically, or chemically treating native starch to change its properties.Modified starches are used in practically all starch applications, such as in food products as a thickening agent, stabilizer or emulsifier; in pharmaceuticals as a disintegrant; or as binder in coated paper. They are also used in many other applications.
Starches are modified to enhance their performance in different applications. Starches may be modified to increase their stability against excessive heat, acid, shear, time, cooling, or freezing; to change their texture; to decrease or increase their viscosity; to lengthen or shorten gelatinization time; or to increase their visco-stability.
What is Cationic Starch?
Cationic starches are important starch-based additives that have been used for decades in a variety of industries and products including cellulose paper and cardboard, textiles, and cosmetics. They can be used as a rheology modifiers, thickening agents, flocculants, emulsion stabilizers, textile sizing agents, paper binders, and coating agents.
The most important application is the production of paper and cardboard. Cationic starches are known to improve tear strength, help to bind particles together and on the base paper material, and increase the retention of fibers and fillers.
What is Oxidised Starch?
Oxidation, as a chemical way of starch modification, is commonly used to obtain modified starches with low viscosity at high solid concentrations. The oxidized starch has been reported to have excellent film-forming properties
| S.NO | PARAMETERS | SPECIFICATIONS |
|---|---|---|
| 01 | Physical Form | Powder |
| 02 | Colour | White |
| 03 | Odor | Odorless |
| 04 | Ph of 10% Slurry | 5.0 to 8.0 |
| 05 | Cold Water Solubility | 4% Maximum |
| 06 | Moisture content, % w/w | 13 Maximum |
| 07 | Ash % w/w | 1 Maximum |
| 08 | Seive Analysis | 99.8% passing through 40 Mesh BSS |
| 09 | Character | Cationic |
| 10 | Starch Content on Dry Basis | 98% Minimum |
| 11 | 6% Solution. B4 Cup at 90 Deg Centigrade | 14-18 seconds |
| 12 | Viscosity of 5% solution in Brookfield Viscometer (Model : RVT) Temp: 60°c, Spindle No: 3 |
1050 - 1450 CPS |
| 13 | Brightness % | Above 90 |
| 14 | Nitrogen % | 0.42-0.47 |
| 15 | Degree of Substitution | 0.028 - 0.035 |
| S.NO | PARAMETERS | SPECIFICATIONS |
|---|---|---|
| 01 | Physical Form | Powder |
| 02 | Colour | White |
| 03 | Odor | Odorless |
| 04 | Ph of 10% Slurry | 7.0 to 8.0 |
| 05 | Cold Water Solubility | 4.0% Maximum |
| 06 | Moisture content, % w/w | 12.0 % Maximum |
| 07 | Ash % w/w | 1.0% Maximum |
| 08 | Character | Oxidised |
| 09 | Starch Content on Dry Basis | 98.0% Minimum |
| 10 | 6% Solution. B4 Cup at 90 Deg Centigrade | 12-13 seconds |
| 11 | Particle Size | 99.8 % passing through 40 Mesh BSS |
| 12 | Brightness % | Above 90 |