Galactosidase

Function

Galactosidase splits galactose, a specific monosaccharide sugar that is present in lactose and in a variety of plant carbohydrates.

Application

Alpha-galactosidase is used almost exclusively as

• an additive to animal feed to improve digestion

• an additive to diet supplements in isolated cases

Gene technology

As a rule, alpha-galactosidase is produced with the aid of genetically modified organisms. Mould cultures (Aspergillen) and yeasts (Saccharomyces) are used as producers.

• In the EU, three alpha-galactosidase products are on the market and two of these may be produced with genetically modified organisms (Aspergillus oryzae, and baking yeast Saccharomyces cerevisae).

Labelling on food products: Food-product enzymes are not regarded as ingredients and are not included on the list of ingredients. Therefore, labelling in regard to their production using GM micro-organisms is not foreseen.

Labelling on feed: Enzyme additives are regarded as additives that must be declared in feed. However, additives that are produced in closed systems using genetically modified organisms are not subject as such to labelling requirements.