New challenges for by-product preservation

Wet by-products from the bio fuel industry are susceptible to mould, yeast and bacterial growth. Preservation by adding mixtures of organic acids and their salts is therefore essential. Traditionally by-products from the food and beverage producing companies are utilised as feedstuff for farm animals such as pigs, dairy cows and beef cattle. Examples are spent grains from the breweries, sugar beet pulp from the sugar industry and wheat starch from companies that produce glucose from wheat. In m