BioConvert – ALKA (Thermostable Alpha Amylase for Bio-ethanol)


BioConvert – ALKA is a starch-hydrolyzing alpha-amylase with high heat and pH stability derived from a selected strain of Bacillus licheniformis. The enzyme is an endo-amylase that randomly hydrolyses alpha-1, 4-glucosidic bonds to reduce the viscosity of gelatinized starch, producing soluble dextrin’s and oligosaccharides.

BioConvert – ALKA offers the following benefits in Bio-ethanol Industry:
Excellent performance with no or low calcium addition under most conditions.
High temperature stability.
Improved low pH stability.
Process flexibility and robust performance.
Eco-friendly & Biodegradable.


Appearance Liquid
Color Brownish
Operative pH range 5 - 10
Operative Temperature range 20°C - 110°C
Solubility Soluble in water


Process Parameter Recommended Range
Dry Substance 25 - 38 % w/w
Optimum pH range 5.3 - 5.8
Optimum Temperature range Primary: 100 - 105° C for 5 - 10 min
Secondary: 95° C for 90 - 120 min

The activity can be customized according to performance requirements or current use.

The optimal usage level of Thermostable Alpha-amylase in liquefaction depends on processing parameters such as type of Raw material, Processing time, pH, Temperature and DS (Dry substance). A typical BioConvert – ALKA dosage rate for liquefaction of wet milled starch is 0.04 - 0.08 % w/w DS. For dry milled grain mash, a typical dosage is 0.08 to 0.16 % w/w DS. An initial minimum enzyme dosage of 10 - 12 Units/g DS (0.57 - 0.69 kg/MT DS) is recommended for wet milled starch and a starting dosage of 20 – 22 Units/g DS (1.2 – 1.3 kg/MT DS) is recommended for dry milled grain mash under most conditions.

It is available in 50 KG HDPE Drums.

Cool & dry conditions are recommended. Extended storage or adverse conditions may lead to higher dosage requirement.

It can be stored in closed container up to six months at 25°C.

Enzyme preparation belongs to protein, which may induce sensitization and or cause allergic reactions in sensitive individuals. Prolonged contact may cause minor irritation for skin, eyes or mucous membrane of nose, so any direct contact with the human body should be avoided. If irritation or allergic response for skin or eyes develops, consult a doctor. MSDS is available on request.