Desizing Enzyme (Alpha-Amylase)
CAS Number: 9000-90-2
Alpha-amylase is a thermostable enzymatic desizing agent that hydrolyzes starch-based sizing agents on cotton and cotton-blend woven fabrics with high efficiency and minimal fiber damage. It works under mild conditions (50–70°C, pH 6–7), eliminating the need for harsh oxidative or alkaline desizing. Widely used in modern continuous desizing ranges for cotton shirting and denim.
Technical Specifications
| appearance | Brown liquid |
| pH optimum | 6.0–7.0 |
| active content (%) | ≥98 |
| enzyme activity (U/mL) | ≥10000 |
| temperature optimum (°C) | 55–70 |
| thermal stability (60°C, 30min, % residual activity) | ≥80 |
Applications
- Continuous enzymatic desizing of starch-sized cotton woven fabric
- Pad-batch cold enzymatic desizing for energy saving
- Desizing of cotton-polyester blend shirting
- Pre-treatment step before scouring and bleaching in DSB process
- Desizing of denim fabric prior to garment washing
Key Features
- Efficient starch removal with minimal cellulose damage to cotton
- Thermostable activity at 60–70°C for continuous pad-steam processes
- Eco-friendly bio-based alternative to oxidative chemical desizing
- Compatible with nonionic wetting agents for effective penetration
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CAS Number
9000-90-2
Category
Textile Dyeing AuxiliariesAvailability
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