Watch out fresh-keeping film let food become poison

Fresh-keeping film on the different effects of different fruits and vegetables

Moisture large fruit and vegetables more appropriate to use fresh-keeping film, such as apples, pears, tomatoes, rape, and leek, etc., not only can long freshness, also increase the number of nutrients.

Experiments show that 100 grams of fresh-keeping film wrapped with chives, 24 hours after their vitamin c content than to wrap multiple 1.33 mg, rape, lettuce leaf 1.92 mg.

But some experimental results are vegetables represent a major departure from 100 g up on fresh-keeping film of radish deposited after one day, their vitamin c content reduces 3.4 mg, beans, cucumber 3.8 mg a day and a night deposit, the amount of the loss of vitamin c is equivalent to five Apple.

Cooked food should not be used for fresh-keeping film packaging storage

Cooked food, hot foods, foods containing fats and oils, particularly meat, it is best not to use fresh-keeping film packaging and storage.

Experts pointed out that these food and fresh-keeping film contact, it is easy to make their materials in the chemical composition of volatile, dissolved to food, to health. Current market sale of the majority of the fresh-keeping film and commonly used plastic bags, are based on ethylene masterbatch for raw materials. Some fresh-keeping film materials are polyethylene (PE), such material does not contain plasticizers, relatively safe to use; there are some material is polyvinyl chloride (PVC), this kind of material often join the stabilizer, lubricants, secondary processing of raw materials, such as a hazard to human health. So, the choice must carefully.

Select the appropriate preservation packaging

Today, the food packaging products on the market, such as fresh-keeping film, bags, savers, etc.

Dong said: "preservation is primarily a ' conservation ' and ' quality ' and ' protection nutrition ', in this connection, the effectiveness of the best fresh-keeping film. Certified fresh-keeping film permeability, internal and external exchange of oxygen can prevent the propagation of anaerobic bacteria, within a certain period of time, be able to guarantee food freshness. "But for bread snack food, with fresh-keeping film is obviously very inconvenient, compared to the comparison of thick bags, air permeability is not very good, relatively suitable for some, but as far as possible; don't put vents sealed. Savers role is sealed, can effectively isolate raw and cooked food storage, refrigerator space utilization to increase.

(Edit: Justin Lin, internships)