How to know the overdue food? Common food overview in quality guarantee period

How to know the overdue food? Common food overview in quality guarantee period
First, distinguish packaging offers the food of factory
First of all, see the date color and luster. Mark date of production really, efficiently and color and luster shiny, mark usually smudgy false a date of production, leave the ink marks around date.
Secondly, can polish with hands. Original date of production at the packing of product, at embossed seal play with that cable gush out date of production generally, it is unable to wipe off it directly with hands. And on date of production correcting one's mistakes, wipe gently with hands, the color begins to become light, wipe for several times hard, make and roll black on date of production, can not find out the look of the word.
Third, see the date color. Some big regular producers select the gilt word different to imitate for use on purpose in order to prevent overdue food from being changed for date by the pedlar, and the illegal suppliers will all usually choose cost lower black raw materials while making the fake.
Second, the supermarket makes the food by oneself carefully
Look over date of production and quality guarantee period,etc. annotate, notice packaging intact carefully, label incomplete don't be bought, can hear peculiar smell if necessary by packages in damaged conditioning.
Try hard to choose the fresh one, just produce the products of the pan, bought few easy and putrid and deteriorated dishes cold and dressed with sauce. The familiar steamed products had better be heated again after buying back, dish cold and dressed with sauce had better increase a little more flavoring agent such as vinegar, garlic to sterilize to buy back home.
Watch out for the advertising campaign of giving a discount of making the food by oneself, this kind of activity is mostly for the at once overdue food to carry on, the safe index is not high, don't seek cheap and making a big purchase.
Cognitive mistaken idea of the overdue food
The mistaken idea one: Quality guarantee period =Shelf life
Also call, eat issue best quality guarantee period, call the intersection of shelve and issue as abroad, mean under the the intersection of storage and terms that label point out of food, keep the time limit of quality. Under the suitable storage condition, the food exceeding quality guarantee period, if colour, fragrance and taste has not changed, can still eat for a fixed period of time. And another kind calls shelf life, namely the edible final date of products. After shelf life, the quality change will take place, a large number of pathogenic bacteria emerge in the food, if eat, may result in being poisoned by food and acute infectious disease. So, the food of shelf life has passed, must abandon.
The mistaken idea two: Do not waste it exactly " Virtue "
A lot of people think, but the mouthfeel changes the bad, flavor changing, quality drops after the food is overdue, so long as not serious and stale loses flavour, should eat up as much as possible, avoid wasting.
It is no doubt virtue, but this kind of " virtue " to save But apt to injure the body. For example the fruit is stood long time, will rot partly, various microorganisms will accelerate breeding constantly, produce a large number of noxious substances, these noxious substances will continue spreading to the rotten part, even if food is a rotten part, the toxin among them will still form the threat to human breath, nerve,etc. systematically.
The mistaken idea three: The refrigerator is equal to keeping fresh the cupboard
Some people thought, so long as would not go bad when putting the food into the refrigerator. The fact is not like this. At first, the suitable temperature range which a lot of microorganisms breed, at 4 - 60 , but most refrigerators refrigerate the temperature and has not reached under 4 , even up to standard, can only delay the growth of the bacterium to breed, but can not kill microorganisms. In addition, appearing, crack, adhesion of ice crystal will often happen in the food preserved for a long time, and refrigerate repeatedly, and the raw well done food is put alternately, not only influence the taste, it is apt to initiate the food to go bad.
Common food overview in quality guarantee period
Dairy products: It is usually 7 days in quality guarantee period that the fresh dairy products are refrigerated, if expose at room temperature, will be putrid and deteriorated in several hours.
Milk power food: Tinplate can, seal, fill nitrogen, pack for 24 month, fill nitrogen to pack for 12 months while being non-, it is 9 months that the glass is bottled, it is 6 months that the plastics are bagged.
Edible oil: Date is 18 months that the common one guarantees the quality, this is under the prerequisite of pack and has not unsealed ing. Quality guarantee period of edible oil will be shortened after Kaifeng correspondingly, had better eat and finish in 3 months.
Rice and flour: Rice Taxi 12 month 6 at room temperature in quality guarantee period. If in the North, so long as does not place on the high-temperature and moist place, it is normal to store the condition, can extend to 24 months. But once rice and flour is stale, can't eat definitely.
The drinks: 11 degrees - 12 degrees of top grade pasteurized beer of province is 4 months, ordinary pasteurized beer is 2 months; 10.5 degrees of pasteurized beer is 50 days; The wine of fruit is 6 months; The light sparkling wine is 3 months.
The cake of bread: Generally winter 7 days, spring is 3 days - 5 days, summer is one day - 2 days. Because contain the moisture, if it is improper to keep, perhaps the cake of bread will be stale every other day, once stale, must abandon the food.
The eggs: Not having fixed quality guarantee period, in 3 weeks - 5 weeks is generally all OK, but the eggs pass for one week each time, quality will drop by a grade, must use as soon as possible.
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