1, most puffed food in the bag filled with inert gas, puffed food machinery to prevent oxidation of fats and oils, rancidity. If the packaging is found to be deflated, consumers should not buy.

2, should try to choose to buy sealed packaged puffed food, because the quality of packaged puffed food is generally better, while bulk sales of puffed food due to exposure to the air, easy to cause rancidity and health indicators exceeded.

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First, the purchase of puffed food attention

At present, puffed food with its good taste and dazzling packaging, more and more by the youth and children's favorite. Not only the taste is diverse, but also eat up the sound of ka-ching-ching can make people follow the happy up, puffed food has the following characteristics: First, good taste. Puffed food is light, light-colored, fragrant, crispy, rich in flavor. Second, easy to digest and absorb. Puffed technology so that the starch is thoroughly cooked, the internal porous, water-soluble quality increase, conducive to gastrointestinal digestive enzymes penetration, improve the digestive absorption rate of nutrients, easy to absorb. Third, easy to store. Puffed food by high temperature and pressure treatment, can play the role of sterilization, and reduce the moisture, limit the growth of mold, sealed for long-term storage, not easy to deteriorate.

1, the purchase of puffed food, first of all, to choose the "QS" logo of the product, and secondly, pay attention to see whether the product labeling standards. Try to some of the credibility of the better shopping malls and supermarkets to buy well-known enterprises to produce brand-name products.

Second, the classification of puffed food

Puffed food is a grain, potatoes or beans as the main raw material, by baking, deep-frying, microwave or extrusion and other ways of puffing and made of significantly larger, with a certain degree of fluffy puffed food. In GB17401-2003 "puffed food hygiene standards" according to whether the edible oil by frying or by vegetable oil spraying, impregnation of puffed food is divided into two categories: fried puffed food and non-fried puffed food.