PL97847B2 - - Google Patents

Description

The subject of the invention is a method of isolating protein from poultry manure and beetle with the use of chemicals. It is known to use litter with poultry manure after drying (sterilization) in its entirety or as an additive to fodder for cattle, pigs and even sheep. Pure poultry droppings are the richest in protein compared to other animals and may contain 10-20% protein. The beetle is also a fairly abundant source of protein with an average content of 9-12%. There are also methods of using poultry and beetle droppings as an additive to silage to sterilize fermentation-inducing microorganisms and enrich them even more with protein. These methods do not allow arbitrary control of the protein content of the feed, which is their major disadvantage. It is known that, in particular, juvenile animals need to be fed with a greater amount of easily digestible protein. The object of the invention is to develop a method for isolating the protein from poultry manure and lice. The obtained protein isolate can be freely added to the feed components, which makes it possible to obtain a feed appropriate to the age and type of animal. This goal was achieved by pouring an aqueous solution of sodium liquor into the faeces and / or piglets collected in a silicone-resistant container with agitators. The hydrolysed mass is then filtered and pressed, and the obtained filtrate is acidified with hydrochloric acid to coagulate the proteins, which in turn are sedimented and dried in a known manner. the first, preferably fresh, is collected in plastic-resistant containers equipped with stirrers. The contents of the containers are poured with a 5-6% aqueous solution of sodium liquor in a 1: 1 volume ratio so as to obtain a pH in the range of 9-11. At ambient temperature, with periodic agitation, especially intensively on the first day, hydrolysis of the protein and partially carbohydrate complexes takes place within a few days. The mass, alkalized in this way, is filtered and pressed. The obtained filtrate is acidified with a 5-10% aqueous hydrochloric acid solution to a pH of 4.5-4.8 in order to coagulate the proteins, which are then sedimented and dried in any type of dryers to obtain a finished protein isolate. The residue after filtration, rich in high molecular carbohydrates, can be enriched with protein, e.g. with the aid of certain bacteria, yeasts, etc., intended for fodder. The method according to the invention allows the use of poultry manure and weeds to obtain a protein isolate in a very simple and simple method. The invention can be practically used in the rendering department of slaughterhouses, meat plants and poultry plants. PL

Claims (1)

1. Patent claim A method of isolating protein from poultry faeces and weeds with the use of chemicals, characterized in that the faeces and / or weed collected in resistant containers equipped with a stirrer are flooded with a 5-6% aqueous solution of soda lye in a volumetric ratio. 1: 1 to obtain a pH of 9-11 and periodically stirring for 1-3 days at ambient temperature, which leads to the hydrolysis of the protein and carbohydrate connections, and then the hydrolyzed mass is filtered and pressed, and the obtained filtrate is acidified 5— 10% hydrochloric acid to a pH of 4.5-4.8 to coagulate the proteins, which are sedimented and then dried in a known manner. Wash. Typographer. UP PRL, circulation 120 + 18 Price PLN 45 PL