Rapeseed meal is the by-product of the extraction of oil from rapeseed. After mechanical seed cleaning and grinding, the oil is extracted from the seeds by means of a mechanical press. The toasting process that follows increases the digestibility of the meal. The toasted meal is dried, chilled and, if necessary, pelleted.
During the extraction, toasting and drying phases, fragments of seed and soap stock may be added to the meal, as well as spent bleaching earth and filter aids.
Rapeseed meal is most widely used in animal feed. It is particularly ideal as a protein component in feeds for high-yielding dairy cows and is also increasingly being used in feeds for pigs and poultry.
Rapeseed meal can also be utilised for energy production in biogas plants.
Soybean meal (made from soybeans processed for human consumption) is the by-product of the extraction of oil from soybeans. Initially, the soybeans are cleaned, peeled and ground by mechanical means. Following the extraction process, the soybean meal is steam-heated, also known as toasting. The toasted soybean meal is dried and chilled. Coarse clumps of soybean meal are ground up. Soybean meal used for the purpose of fattening animals is previously defatted and heated. In cattle feed, soybean meal is used as a source of protein and thus constitutes an alternative to rapeseed meal. The crude protein content is determined by the treatment of the soybean during the oil extraction process.
Soybean meal usually comes in three forms:
The difference between these types lies in the fact that soybeans are peeled prior to the production of HP soybean meal, which leads to an increase in the relative share of crude protein.
*As natural products, soybean and rapeseed are subject to various factors that determine their quality, such as climatic conditions during the growing season; the soil condition of the cultivation area; the deployment of fertilisers or pesticides as well as production circumstances and the use of processing aids. The product quality may therefore vary from year to year.