摘要:
The invention relates to the use of olive extract as a pronutrient in animal feed, which is obtained exclusively using physical methods. The extract can be used as a natural pronutrient in veterinary science, providing a significant improvement in terms of feed efficiency and other parameters relating to the feeding of birds and pigs. The extract is characterised in that it must contain the following majority products: maslinic acid, oleanolic acid, hydroxytyrosol and tyrosol in the free form or in the form of biologically-acceptable salts.
摘要:
The invention relates to a method for using the natural biophenols, tyrosol and hydroxytyrosol, contained in the industrial by-products that result from the crushing and processing of olives, whether from three-phase or two-phase presses, and the husks and cakes thereof. The method produces a mixture of the two biophenols with a purity of more than 90% and yields of between 0.1 and 1.5% depending on the product and the processed raw material. The invention essentially comprises the selective extraction and fractionation of the resulting mixtures using solvents