(EN) A BINDER COMPRISING THE PRODUCTS OF A CARBOHYDRATE REACTANT AND POLYAMINE IS DISCLOSED. THE BINDER IS USEFUL FOR CONSOLIDATING LOOSELY ASSEMBLED MATTER, SUCH AS FIBERS. UNCURED FIBROUS PRODUCTS COMPRISING FIBERS IN CONTACT WITH A CARBOHYDRATE REACTANT AND A POLYAMINE ARE ALSO DISCLOSED. THE BINDER COMPOSITION MAY BE CURED TO YIELD A FIBROUS PRODUCT COMPRISING FIBERS BOUND BY A CROSS-LINKED POLYMER. FURTHER DISCLOSED ARE METHODS FOR BINDING FIBERS WITH THE CARBOHYDRATE REACTANT AND POLYAMINE BASED BINDER. FIG. 2