It is a direct extrusion puffed food with cereals, potatoes or beans as the main raw materials and extruded by an extruder. Under the condition of high temperature and high pressure, the product is expanded by using the pressure difference inside and outside the machine.
Direct extrusion puffed food generally contains no lead, but aluminum may exceed the standard.
In order to pursue crisp taste and good appearance, manufacturers often add leavening agent (or baking powder), which contains certain aluminum element. Heating during baking or frying produces gas, and the leavening agent forms a uniform and dense porous structure inside the food, which increases the volume and makes the product crisp.
If you eat puffed food with excessive aluminum, aluminum will accumulate in the human body, causing pathological changes in the nervous system, interfering with people's thinking, consciousness and memory functions, and in severe cases, you may suffer from dementia. Excessive intake of aluminum may also lead to the loss of calcium deposited in bone, inhibit bone formation and cause osteomalacia. According to experts, children are more vulnerable to the influence of puffed food with excessive aluminum than adults.
Therefore, the problem of aluminum exceeding the standard in puffed food has recently attracted great attention at home and abroad.