Gluten feeding people and animals
The job of the starch manufacturer is to extract starch from cereals or from potato in its purest form. Among the other components of cereals and potato, all of importance and use, proteins are of particular interest as both nutritional and functional additions for animal feed as well as for human consumption.
According to the raw materials, proteins have specific qualities and uses:
Maize proteins are developed in animal nutrition in 2 forms:
purified maize protein or maize gluten
with draffs as maize gluten feed
wheat gluten (wheat protein purified) is used:
or approximately 20% in animal nutrition and for 80% in human nutrition
proteins of potato are developed in animal nutrition in 2 forms:
pulps enriched in proteins
Wheat gluten and human consumption:
Rehydrated gently, vital wheat gluten has the capacity to form a continuous extensible and airtight elastic network. It is the only protein with this property, which is called visco-elasticity.
If a flour does not contain enough gluten, the bread breaks down, has little volume, and its crumb is irregular. Millers use either wheat, rich in proteins, or directly gluten in order to improve the quality of baking of flour.
Thanks to its properties of visco-elasticity and binding, gluten also improves resistance in puff and frozen pastries. It ensures good handling, and also cohesion of meat preparations . Wheat proteins offer high nutritional value , and can be used either as a basic ingredient, or combined with other vegetable proteins. A pure and concentrated source of proteins, they form a perfect substrate for hydrolysis in the preparation of soya sauces and vegetable protein hydrolysates.
90% of gluten is used in applications which traditionally employed wheat flour.
Proteins and animal nutrition:
The proteins coming from the starch industry are purified and standardised proteins. They are vegetable proteins with each one having particular characteristics. Thus they are useful, in addition to their nutritional properties, for particular applications within animal nutrition.
Thanks to their good nutritional balance resulting from an excellent distribution of the amino acids, potato proteins are part of the composition of high added value food, intended for calves ( milk substitute), or for piglets.
The specific richness of maize proteins in yellow pigments makes them highly interesting in certain food products (influence on the colour of eggs). They are also increasingly used in dry food for dogs and cats.
Wheat gluten is used both for its nutritional properties (higher digestibility) and as a binder, for the cohesion which it gives particularly in aquatic feed or in meat analogues for pets food.
Hydrolysed protein is used as the first choice source of protein in food for calves and piglets.