The pore size of edible silica gel is about 8- 10nm, the specific surface area is 300-500m2/g, and the surface is hydrophilic, so it has strong water absorption capacity, which can reach more than 80%- 100% of its own weight under high humidity.
Therefore, food-grade silica gel can be used as an external desiccant for food and medicine. Because the edible silica gel is refined and sterilized, it can be mixed with food and medicine according to the required amount, which directly ensures the drying of food and has no toxic or side effects on human body when eaten with food.
Extended information 1, pay attention to the plastic smell.
Pay attention to the manufacturing materials when buying plastic boxes. Because the heat resistance of polypropylene (PP) is higher than that of polyethylene (PE) and polystyrene (PS), it is recommended that families who have meals at work choose PP products ... But many microwave oven food plastic boxes are made of PP, but the covers are made of PE or PS, so take off the covers when heating food.
2. Replace the plastic crisper regularly.
Experts pointed out that if plastic boxes are often heated and exposed to the sun, it is easy to destroy plastic molecules and become fragile and aging. Therefore, if the plastic box is found to be hard, transparent, atomized, deformed or scratched, it should be replaced. If you put it in the microwave oven again, it will release more harmful substances.
3, thoroughly clean before use
Before using it for the first time, wash it thoroughly with detergent. However, people who bring food to work should pay attention to avoid using abrasive scouring pad to avoid scratching the plastic box.
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