GB573500A - Method for improving foods - Google Patents

Abstract

Slaughterhouse blood plasma is sterile filtered before incorporation in food. The plasma is preferably clear-filtered, e.g., by means of a Seitz Ariston filter, before it is passed to the sterile filter, preferably a Seitz Zenith filter with E. K. filterbeds; the filters, tanks, conduits &c. being initially sterilised by steam and cooled as by passing cold water through them. The sterile-filtered plasma may be mixed with one or more, preferably sterile, modifying agents such as milk or milk products, flour, starch, sugar, fats or oils, emulsifiers such as mono-and di-glycerides and lecithin, and foam generating and stabilising agents such as linseed infusion or methyl cellulose, e.g., Tylose T.W.A. In one example, a preparation for use as an egg substitute and in breadmaking is made by mixing 750 kgs. plasma with 250 kgs. sterile linseed infusion, prepared from 30 kgs. linseed, adding a sterile mixture of 3 kgs. benzoic acid or the methyl ester of paraoxybenzoic acid, 1 kg. yolk colour and 10 kgs. methyl cellulose, continuing stirring for a few hours and leaving the mixture overnight at room temperature before bottling. A modified product for use in making bread and cakes, in which the dough or batter has to be whipped, is obtained by including 500 kgs. of plasma and linseed infusion. The products may be prepared in a dry state as by freezing, vacuum or spray drying or precipitation, e.g., with acetone or alcohol, and subsequently reliquified and sterile filtered. In an example, a sterile mixture of plasma, linseed infusion and, if desired, other modifying ingredients is dried on rollers, drums or bands or, preferably, concentrated by vacuum evaporation and then spray dried. The products may be packaged with a sterilising agent, such as benzoic or salicylic acid. Meat-like products, such as forcemeat-balls, prepared from vegetable materials, preferably rich in proteins, are improved and prevented from disintegration in cooling by the addition of the plasma in liquid or more or less dried state.