2013年8月29日星期四

Add emulsifier


Emulsifiers are a large class of surfactants , may stabilize the emulsion . The reason is , emulsifying two substances can be dispersed in water physiognomy , or double -layer thin film is formed , Sodium lactate the dispersed phase with each other to prevent condensation , the formed emulsion is stable . For example, in pesticide original drug ( solid ) or oil ( liquid ) in a certain amount of emulsifier , then they are dissolved in an organic solvent , the mixing can be made after a transparent liquid , called EC. The emulsifiers used are soaps , acacia , alkylbenzene sulfonate .
However, some emulsifiers can be used as food additives , primarily for immiscible oil ( hydrophobic material ) , and water ( hydrophilic substance) foods , so that the oil and water zinc lactate reduce the surface tension , the two surfaces to form a protective film , so that the oils can be uniformly stable in water , so that stability of aqueous material in the oil evenly .

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