that day, a friend brought a bag of barrels noodle, pointing to the top of the line Let me look: This product does not contain preservatives. "This thing could take months, not bad, no preservatives how possible? "she asked quite trust.
me smiled: how, take a few months must add preservatives want it? You can trust this point: non-fried instant noodles indeed preservatives. Previously wrote that knowledge points, give you review about no harm.
want to say why add preservatives, must know how food is corruption.
world on the type of far more than millions of micro-organisms, but in accordance with the division of the food sector, more than three categories: beneficial microorganisms, corruption microorganism, as well as pathogenic micro-organisms. Beneficial microbes to help us manufacture yogurt, pickles, wine, vinegar,酱豆腐... ... Without them, life is too boring you. Harmful microorganisms enables us to suffer from dysentery, enteritis and even allow us to create toxin poisoning. However, the vast majority of microorganisms are not pathogenic, they are nothing but steal and human food, their access to food after the status has brought corruption, so called spoilage organisms.
food processing and preservation, to a large extent, that is, and these make the fight against corruption microorganisms. The ancients discovered that micro-organisms have several fears: First, are afraid of do not water it should not grow; followed by the fear of salt, salt, sugar, alcohol may add more than enough, high osmotic pressure, and they also can not stand; third are cold to the status of frozen micro-organisms will be difficult after breeding.
so, Confucius was to enable students to pay tuition with a bunch of meat, rather than giving them to carry a large piece of meat, that is, exist in order to enjoy at home ah slowly. That year there is no refrigerator, master of the mind are really high then.
you to carefully look at the supermarkets, who do not need放冰箱food, or is the result of canned food (in this regard after the reason we continue to speak), or are dry food. Cookies at room temperature is able to decentralization year, flour, rice, vermicelli, sugar like不会腐败, shredded squid fillet of beef can do when snacks like ... ... are the same reasons: to lower the water enough. Tofu水汪汪such things must be placed on the refrigerator are also only take a few days; and Dumplings box must be placed on the freeze, but also because it does not dry.
fried instant noodles after a dry or hot-air drying, micro-organisms can be the use of water has been removed, so even if do not add preservatives, it must不会腐败unless damp in storage again will it be possible to长霉.
know this truth, we understand their ads are "nonsense ads," one - do all of the instant noodles do not add preservatives, not a small number of brands on our Special considerate. In our daily lives, this kind of "nonsense ads" accounted for a substantial proportion of propaganda such as "This product does not contain cholesterol" of vegetable oil, and so on. Nonsense of the existence of these basic, that is, basic knowledge of life consumer ignorance.
Friend embarrassed smiles: one reason that I will understand, can not usually thought brain. Yes, now that does not contain preservatives, are not it does not contain any food additive has been?
I said: Of course not ah. If it is deep-fried instant noodles, which must contain antioxidants. You must have had this experience, food oils and fats containing them on the air, over the past ten days there will be a very uncomfortable smell, and even the people are choking, "Ha La taste", and this is the result of fat oxidation. Fried instant noodles contain nearly 20% of the grease, how could a few months it does not变味?
suddenly Friend: So, fear of instant noodles are not afraid of bacterial oxidation. No wonder the tag on the last one read "TBHQ", this is the right kind of antioxidants.
Yes! Smart ah! I praise her. In fact, in front of that "vitamin E" is also used to play the role of anti-oxidation, but it is less effective than TBHQ it. In addition, the instant noodles are fried with palm oil system, it is a less easily oxidized oil. If you use soya bean oil to deep-fried, it may be in trouble. Oil for food has run, the best packaging can cut off oxygen, such as Nitrogen vacuum to avoid oxidation of trouble.
She nodded: the original, and sometimes have to add additives really are things. Can do nothing about it, but also had to put together TBHQ swallow, and should not eat a total Ha La flavored noodles bar, I heard that the oxidation of fat people ah aging. Say you then say that canned food? To tell the truth, I am also concerned about the very canned it ... ...
(next: canned food is not true nutrition吗?)
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