用英语介绍ice cream

来源:百度知道 编辑:UC知道 时间:2024/05/14 23:46:37
速度

This is a desert,and it is a very popular food for children,expecially the youth.When it in summer,many people love eating this food very much!It's cold,and sweet.Almost all the people love it very much!

Ice cream is both an emulsion and a foam. The milkfat exists in tiny globules that have been formed by the homogenizer. There are many proteins which act as emulsifiers and give the fat emulsion its needed stability. The emulsifiers are added to ice cream to actually reduce the stability of this fat emulsion by replacing proteins on the fat surface. When the mix is subjected to the whipping action of the barrel freezer, the fat emulsion begins to partially break down and the fat globules begin to flocculate or destabilize. The air bubbles which are being beaten into the mix are stabilized by this partially coalesced fat. If emulsifiers were not added, the fat globules would have so much ability to resist this coalescing, due to the proteins being adsorbed to the fat globul