Ans:
Songhua eggs, also known as leather eggs, are not only tasty and nutritious, but also have a particularly attractive surface of "pine flowers". It is said that China's working people as early as before the Ming Dynasty, has already invented the fresh eggs processed into loose eggs.
The key to the production of pine eggs is the preparation of fresh eggs wrapped in the outside of the material ash. If the 100 duck eggs (or eggs), the required ingredients are: soda (i.e., soda) 115 g, salt 150 g, 400 g of quicklime, wood ash 1350 g, boiling water 2100 g. Specific preparation and production methods are: first of all, the soda and salt into a small porcelain jar, rushed into the boiling water, to be fully dissolved, and then added in batches of quicklime and wood ash, when the lime all When the lime all "melt" open, the material ash is prepared. Finally, the material ash (appropriate to add some rice hulls or wheat bran) evenly coated in fresh eggs, after about two months of time, one into a tea-colored jelly-like and a beautiful "pine flowers" of the pine eggs can be enjoyed.
In the fresh eggs into the process of eggs, contains a complex chemical reaction. First of all, the main component of quicklime is calcium oxide, it meets water will be converted into mature lime - calcium hydroxide: CaO + H2O ＝＝＝＝Ca (OH) 2, and then, calcium hydroxide and soda ash in solution with each other Ca (OH) 2 + Na2CO3 ＝＝＝＝CaCO3 ↓ + 2NaOH
At the same time, the soluble components in the grass ash (mainly potassium carbonate) also react with the calcium hydroxide: Ca (OH) 2 + K2CO3 ＝＝＝＝CaCO3 ↓ + 2KOH
Both of the above reactions produce caustic bases with strong corrosive properties - NaOH and KOH, which are strong bases. Gradually through the eggshell protein coagulation, and kill a variety of bacteria that can lead to the corruption of fresh eggs, at the same time in the role of sodium hydroxide, a part of the protein decomposition, these decomposition products from the protein crystallization out, which became a "pine flowers".
I hope the above information can help you!
I hope the above information can help you!