Method for extracting and extending the storage life of edible blood from waterfowl, particularly geese and ducks

Abstract

The subject of the application is a method of extraction and extended storage of blood suitable for consumption from waterfowl, especially geese and ducks, using a veterinary and health section of poultry and slaughter of the raw material and vinegar, which consists in that in the first stage, the raw material - waterfowl - is subjected to a preliminary selection in terms of health and possession of a veterinary health certificate and a documented food chain; then in the second stage, a visual selection of the raw material is carried out - selecting animals without visibly contaminated feathers and paws;in the third stage, the selected raw material suspended on the stirrups of the slaughter line, after severing the blood vessels, is moved to a dedicated special room, separated from the slaughter by a curtain, where blood is collected for consumption, where there is a pressure cascade in the room, i.e. the pressure difference between the room with a higher cleanliness class, i.e. the collection point, and the lower cleanliness class, i.e. the rest of the slaughter hall, which should be between 1 and 40 Pa, preferably 10 Pa, and at the same time, overpressure must be maintained in the collection room, and in the next stage, negative pressure; then, in the fourth stage, a funnel-shaped collection vessel connected by a hose to an aseptically closed tank cooler with a low-speed mixer is placed under the stream of intensely flowing blood; the blood collection vessel placed under the funnel must not touch the poultry;in this case, blood is obtained from the raw material only at the moment of its intensive flow, and not immediately after the cutting; that is, preferably at least 0.5 - 5 seconds after the cutting of the raw material, and the remaining blood flows into a gutter and / or a pipe made of microbiologically neutral material and then outside into a tank intended for this purpose, from where it is collected by an authorized Recycling Plant;wherein the container-cooler before the blood is collected already contains an acidifying agent to prevent blood clotting, i.e. preferably 10% spirit vinegar in an amount of 3% to 15% by volume of the entire mixture with the collected blood: and the container is continuously cooled, wherein in the fifth stage the container-cooler with the blood, after the slaughter, is transported to a cold store where the blood is cooled to a temperature not higher than 4°C, and then it is transported to a packing room and poured into containers, preferably plastic, the blood is poured from a filling tap preceded by a filter, preferably SSF2-0520; and the containers, preferably packed in cartons, are further transferred to deep-freezing; i.e. the product temperature is preferably maintained at -18°C or lower for a period not longer than 24 months;