Alpha-amylase TH-0400 (Thermostable)
A heat-stable alpha amylase with superior thermal stability and wide pH range, suitable for desizing of textile fabrics such as cotton, silk, polyvinyl alcohol fibers, rayon fibers, blended fabrics, dyed poplin, etc.
TH-0400 has an excellent heat resistance and a wide pH range. It is suitable for desizing of textile fabrics such as cotton, silk, polyvinyl alcohol fibers, rayon fibers, blended fabrics, dyed poplin, etc.
Declared Enzyme: Alpha-Amylase
Systematic Name: EC 22.214.171.124, 1, 4-alpha-D-glucan 4-glucanohydrolase
Activity: 40,000 U/ml (minimum)
Appearance: Light ivory Powder
Effect of pH
TH-0400 is active over a wide pH range, depending on the application conditions.The optimal pH is 5.4 to 6.4.
Effect of Temperature
Optimum temperature of TH-0400 for interval liquefaction is above 77°C. It liquefies starch substrates promptly at 83 to 90°C and demonstrates exceptional thermal stability at 100 °C. The exact temperature optimum depends on actual processing conditions, such as pH, concentration of substrate and time.
Concentration of Calcium
The presence of calcium increases the thermal stability of this enzyme. It requires a very low calcium concentration, i.e. 5 to 20 ppm will be sufficient to ensure its thermal stability.
Copper, titanium, and cobalt ions are moderate inhibitors for TH-0400, whereas aluminum, lead and zinc ions act as strong inhibitors.
Use of TH-0400 in desizing of textiles can ensure the following benefits:
1) Enable desizing and colour-fixing at the same bath, thus shorten process flow and improve productivity
2) Enhanced capillary tube effect of fabrics
3) Improved working conditions for operators
4) Less dosage level and reduced processing costs