GB208144A - Improved treatment of protein matter of animal origin for industrial purposes - Google Patents

Abstract

Fish and fish or animal offals are treated to obtain food, fats &c. by a process of digestion, the action of undesirable bacteria being checked by the use of nitrochloroform or its homologues. The skeleton and like parts are separated after the treatment and used for manure or in making glue. The nitrochloroform is removed from the products by evaporating in thin layers under a stream of air.ALSO:Fish or fish and animal offals are treated to obtain food, fats, &c. by a process of digestion, the action of undesirable bacteria being checked by the use of nitrochloroform or other volatile antiseptic substance. The skeleton and like parts are separated after the treatment and used for manure or in making glue. The finely-divided matter separated from the skeleton is filtered and the filtrate separated by decantation into two portions, the heavier of which consists chiefly of amino-acids. The nitrochloroform is removed from the products by evaporating in thin layers under a stream of air, and from the fats by heating to 100 DEG C.ALSO:Fish or fish and animal offals &c. are treated to obtain food, fats &c. by a process of digestion, the action of undesirable bacteria being checked by the use of nitrochloroform or its homologues. The skeleton and like parts are separated after the treatment and used for manure or in making glue. The finely divided matters separated from the skeleton &c. are filtered. The residue may be used as a grease or may be dried and separated by known fat solvents into a nitrogenous portion and a fatty portion. The filtrate is separated by decantation into two portions, one of which is a fatty liquid containing hydrocarbons. The nitrochloroform is removed from the products by evaporating in thin layers under a stream of air, and from the fats by heating to 100 DEG C.