In the food production process, will have some stuck inside surface of the CAP. In products mature or sterilized during this part of products of coking, and not \"rust\".
2, why food will become water left in the bottle jinjin?
If you are a bottle of food to feed the children, then it is possible to his saliva to the bottle. Amylase in the saliva, will break the starch in food, and makes it water jinjin. The best according to the child\'s appetite, food from bailed out of the bottle, put them in a bowl to feed the children, of food left to eat, do not put back in the bottle.
3, open surface found bottled food food colors darker, if food has gone bad?
If you open the bottle vacuum safety button is normal, so surface color change is due to food being caused by oxidation. This is because when filling and sealing of food, a small amount of residual oxygen in space at the top of the bottle. The color change does not affect the quality of the product.
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