The valorisation of agricultural co-products is receiving more attention. With many researchers evaluating the conversion of co-products into food ingredients and other value-added materials. These co-products may still contain many valuable substances, such as, pigments, sugars,organic acids, flavours and bioactive compounds with antioxidant and antimicrobial activities, as well as being valuable sources of dietetic fibre. Co-products may be converted into a range of commercial products, either as raw materials for secondary processes(intermediate food ingredients), as operating supplies, or as
ingredients of new products. Although plant food co-products are interesting from a nutritional point of view, only a few of them have been successfully developed from the vast quantities of plant residues produced by the food
processing industry.