Alpha-acetolactate Decarboxylase For Brewing Industry


CAS No: 4081-35-0
Activity: 1,500u/g
Shelf Life: 12 Months
Odor: Slight Fermented Flavor
Appearance: Liquid
MOQ: 1 Kilogram
Colour: Light Yellow
Packaging Detail: 25kg/drum or bag
Selling Units: Single item
Single package size: 29X15X18 cm
Single gross weight: 1.15 KG

Availability: 99 in stock

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Product Description

Food grade powder additive alpha-acetolactate decarboxylase for beer brewing

Alpha-Acetolactate Decarboxylase is produced by submerged fermentation of Bacillus subtilis followed by purification and formulation. It is widely used in food processing.


Diacetyl, the α-acetolactate oxidative decomposition product, is an intermediate along the synthesis of amino acids in yeast, especially of valine and isoleucine. This decomposition process is very slow in yeast. Alpha-Acetolactate Decarboxylase can speed up the transformation of α-acetolactate into acetoin efficiently, avoiding the formation of the diketone, an off flavor in beer, and thereby greatly reducing diacetyl level in beer and diacetyl reduction time. In this way beer maturation time is saved.

Product standard

The product complies with GB1886.174.

1 Bulk density/(g/ml) 1.10-1.25
2 pH/(25℃) 4.0-6.5
3 Lead/(mg/kg) ≤5.0
4 Arsenic/(mg/kg) ≤3.0
5 Total viable count/(CFU/mL) ≤50000
6 Coliform Bacteria/(CFU/mL) ≤30
7 Escherichia coli (CFU/mL) <10
(MPN/mL) ≤3.0
8 Salmonella/(25mL) Not Detected

Recommended dosage

The recommended dosage is 5-500g/t DS. The dosage has to be optimized based on each application, the raw material specifications, product expectation and processing parameters. It is better to begin the test with the convenient volume.


Enzyme preparations are proteins that may induce sensitization and cause allergic type of symptoms in susceptible individuals.Prolonged contact may cause minor irritation for skin, eyes or nasal mucosa. Any direct contact with human body should be avoided.If irritation or allergic response for skin or eyes develops, please consult a doctor.

Package and Storage


Storage: Keep sealed in a dry and cool place and avoid direct sunlight. Slight sedimentation is acceptable since it will not impact performance of the product.

Shelf life:12 months in a dry and cool place.



Packaging Detail

25kg/drum or bag

Selling Units

Single item

Single gross weight

1.15 KG

Single package size

29X15X18 cm

Shelf Life

12 Months


Slight Fermented Flavor




1 Kilogram


Light Yellow

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