Enzymatic pre-treatments of fruit by-products to modify fibre composition and phenolics release.

Grapes and other fruit crops generate huge amounts of solid residues (pomace) which are still rich in bioactive compounds including fibre and phenolic compounds with potential healthy properties. However, the fibres present in these by-products are mainly insoluble which is not the best composition from either a nutritional, or a technological point of view. Furthermore, some of the phenolic compounds are present in a form bound to the cell walls being, in this way, not much bioavailable