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Coating to preserve fresh eggs
The use of polyvinyl alcohol film to preserve fresh eggs can effectively prevent the intrusion of bacteria. The shelf life is 70-100 days and the good rate is over 95%. Fresh eggs cost only a few cents per kilogram of fresh eggs. 1, raw materials. Polyvinyl alcohol can form a colorless and transparent film, which is attached to the surface of fresh eggs to protect it. Sodium acetate is an ideal food preservative. 2, the preparation of preservation solution. Fresh-keeping solution concentration is 5%-7%. After boiling 10 kg of water into the pot, add 500 g of polyvinyl alcohol, continue stirring, and stop stirring when completely dissolved. Add 100 g of sodium acetate, stir to dissolve it, and add boiling water to make the total weight of the solution not less than 10.5 kg. After cooling, stand by. Each kilogram of fresh solution can handle 60-70 kilograms of fresh eggs. 3, preservation treatment. The coating method depends on the number of eggs. When the amount is large, one by one, dipping in one hand and dipping in large quantities, each egg surface must be completely covered with a solution, and dried to form a colorless transparent film. Pay attention to ventilation during storage, regular sampling inspection to prevent local egg temperature rise, affecting the preservation effect.
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