Sodium alginate reacts with calcium chloride, and sodium alginate reacts with calcium chloride to form gel

　　　　　　　　 The sodium alginate solution drops into the calcium chloride solution, which will cause solidification. I believe many people have discovered this problem. Today, Qingdao Nanshan Biological Sodium Alginate Factory will explain the effect of sodium alginate and calcium chloride, and the principle that sodium alginate and calcium chloride react to form gel, and believe to introduce several application cases of the reaction between sodium alginate and calcium chloride:

　　　　　　　　 How is the gel formed? In simple terms

　　Sodium ions in sodium alginate are replaced by calcium ions in calcium chloride to form calcium alginate, which is insoluble in water and forms a cross-linked gel system.

　　Sodium alginate is water-soluble, and can be solidified by combining with metal ions with valence above 2. The solution of sodium alginate and calcium chloride reacts to produce calcium alginate and sodium chloride, and calcium alginate is insoluble in water. It depends on calcium chloride.

　　The invention relates to a formula of an exploded egg and a manufacturing method thereof, which comprises an exploded egg coat and an exploded egg inner juice which is matched and arranged in the exploded egg coat, wherein the exploded egg outer coat is prepared into a film by a glue solution, and the glue solution consists of water and seaweed extract, and the exploded egg inner juice comprises water, white sugar, orange juice concentrate, thickener, calcium lactate and edible essence. The explode eggs obtain by that technology are soft in appearance and good in hand feel; different single or mixed fruit juices are selected, so that explode eggs with different tastes can be obtained, and the fried eggs are hand-tasted, sour and sweet in taste, impressive in peculiar taste and deeply loved by consumers.
　

　　Sodium alginate condenses when it meets calcium chloride, and calcium chloride is added dropwise to form sodium alginate colloidal particles, and then calcium chloride slowly infiltrates to form solid sodium alginate particles, which in turn form hollow sodium alginate particles.

　　In the production of sodium alginate, the tensile strength and water absorption of sodium alginate first increase and then decrease with the increase of calcium chloride concentration. Let's introduce three major effects of calcium chloride concentration on the production of sodium alginate:

　　1. When the concentration of calcium chloride is lower than 2.0%, the cross-linking degree between calcium ion and sodium alginate is low due to the slow exchange speed between calcium ion and Ca2+, the coagulation ability is too weak and the skin layer is very thin, so the cross-linking degree of the gel gradually increases with the increase of calcium chloride concentration, so the stretching degree of the gel gradually increases. At the same time, the increase of crosslinking degree leads to the compactness of the gel structure and its water absorption increases gradually.

　　2. When calcium chloride reaches 2.0%, the tensile strength and water absorption of calcium alginate gel are the largest.

　　3. When the concentration of calcium chloride is higher than 2.0%, because the concentration of calcium chloride is too high, a dense cross-linked structure is quickly formed on the surface of the gel, which hinders the diffusion of Ca2+ into the gel, so that the gel cannot form a complete gel structure inside, which directly affects the tensile strength of the gel. For the same water absorption rate, because the network structure on the surface of the gel is too dense, the water holding capacity of the incomplete calcium alginate inside the gel is low, so the water absorption rate of the gel decreases.
　

　　If sodium alginate wants to form a big lump, the concentration is basically above 0.5%, it can be dissolved by heating to 60℃ and stirring, and then the calcium chloride solution is poured in (the concentration is not important, and the mass ratio of the two is much worse if it is only cross-linked gel, unless you have special needs or something). It is suggested to drop it in, so that a gel film will be formed on the surface first, and then all the calcium chloride will be poured in and soaked, and after a while, it will be gel all over. However,

　　If you want a uniform gel block, you should compound it. In addition, to make a gel, generally calcium salt, zinc salt and barium salt can be used.