Margarine is a kind of plastic grease made from vegetable oil and some animal oil, water and seasonings, which is used to replace natural cream obtained from milk.
Vegetable oil is generally liquid at room temperature. If you want to simulate the sense of natural cream, you need to "harden" the liquefied vegetable oil, that is, "hydrogenate", that is, add hydrogen to catalyze it at a certain temperature and pressure, and the hydrogenated vegetable oil will increase its hardness, maintain its solid shape, and enhance its plasticity, fusion and emulsification, which will make the food more crisp. At the same time, it can also prolong the shelf life of food, so it is widely used in food processing.
However, the chemical structure of some hydrogenated vegetable oils that are not fully hydrogenated is trans-bonded, which becomes trans-fatty acids. It does not have the nutrition of pure natural cream and is not good for human health.
Selection skills of high-quality cream
1, look at the label: regular whipped cream packaging must be marked with product name, ingredients, net content, production date, shelf life, storage conditions, manufacturer's address and contact information, product standard number, production license number and nutrient composition table. If any item is missing, it is a nonconforming product. Pay attention to the production date of the product. The newer the date, the better.
2. Look at the packaging: the packaging of high-quality whipped cream should be tight, the packaging should be clean and tidy, and there should be no typography, omission, leakage and package expansion. There must be no dirt on the surface.
3, look at the ingredients list and fat content: pay attention to what is the raw material in the ingredients list, whipped cream should be based on raw milk. Secondly, look at the fat content. Different fat contents have slightly different uses. Generally, the whipped cream with 30%-38% fat is used to send away the decoration, while the whipped cream with lower fat prevention content is used for cooking and coffee drinks.
Baidu Encyclopedia-Margarine