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HOME>>NEWS
Supermarket freezer cold enough food shelf "shrink

  Supermarket freezer cold enough food shelf "shrink" (Figure) Source: Tianjin Network - Digital Newspaper Keywords: temperature; shelf life; freezer; storage temperature; freezer refrigerator Author: Wang gradually 2011-10-18 08:05

To the supermarket to buy ham, yogurt, frozen dumplings and other frozen foods, most people will pay attention to the food shelf life, however, shelf life need for this storage temperature, and everyone did not seem too much attention. It is also the supermarket freezer refrigerator temperature is not up, resulting in a lot of food shelf life "shrink."

Readers rebellion

Supermarket shelf life of yogurt on the deterioration

Suspected "Storage temperature" to blame

"Today I bought in the supermarket sales of yogurt solids, production date is this month 8, shelf life of 21 days, the results have been found to deterioration of the home open." Ms. Lee said that from the date of production point of view, buy their own yogurt should be within the warranty period, in the end why is there a deterioration of the situation, they do not understand.

According to Ms. Lee that in order to find out, he returned to the supermarket, in the freezer for a long time before the turn, only to find yogurt deterioration of the "suspected cause." "Yogurt packaging for the storage temperature is 2 ℃ to write 6 ℃, can be displayed in the supermarket refrigerated cabinet is obviously higher than the temperature." Ms. Lee said that although yogurt can not be sure that this causes deterioration, but at least is "one of the reasons."

For the "Storage temperature" of the details, the reporter also interviewed in the supermarket freezer before being selected several members of the public goods. However, most people said they buy yogurt, ham and other merchandise, focusing on only the production date and shelf life, do not care about storage conditions attached. Many people even "temperature" completely ignored, that "as long as the shelf life eating no problem!"

Reporters survey

Many large supermarket freezer storage temperature does not meet the requirements of multi-

Yesterday, the reporter a number of large supermarkets in the city and other areas of refrigerated freezer conducted a survey found that most supermarket freezer temperature is not up there is the case.

12:05 yesterday, the reporter went to the supermarket three roads all music stores, where store yogurt freezer is open, the top freezer with electronic temperature display. Reporters found that yogurt packaging clearly the product of the storage temperature, mostly in the 2 ℃ to 6 ℃, a shelf life of 18-21 days. The four side of the supermarket freezer temperature in addition to a display of 3.6 ℃, the temperature of the other three are more than 7 ℃.

13:40, the reporter went to the Carrefour supermarket mother and stores, where store yogurt freezer temperature 3 ℃ and down more in line with storage requirements. However, sales of rice wine, kimchi refrigerator, the reporter found that there have been two expansion packs bags of kimchi case, then, freezer on the electronic screen real-time temperature is 6.6 ℃, but indicated on the bag of kimchi storage temperature of 0 ℃ to 4 ℃.

The supermarket's freezer storage of frozen food, mostly sliding door type, but here the food stored in the storage conditions required for the -18 ℃ or less. Correspondents in South China Resources Vanguard stores found here are frozen with freezer thermometer, most of the thermometer readings are -20 ℃, but it also has a freezer with frozen dumplings temperature is only -10 ℃, the requirements of more than dumplings Storage temperature higher than 8 ℃.

Experts explain

Storage temperature is too high will shorten the shelf life

It is understood, implemented in October 2009 the national standard "supermarket shopping environment" in the provisions of goods and storage of fresh raw materials area should be equipped with the necessary materials at low temperature storage of equipment, including cold storage (cabinet) and freezer (cabinet) , cold storage (cabinet) temperature of -2 ℃ to 5 ℃, freezer (cabinet) temperature is below -18 ℃.

Qingdao Agricultural University, Institute of Food Science, said Dr. Zhang Jiacheng, food packaging and storage conditions on shelf life are strictly based on experimental data and the national standards defined, yogurt can not be guaranteed if stored under recommended storage temperature, shelf life will be a corresponding to shorten. "For example, the temperature reached 20 ℃, yogurt yeast and mold will begin to multiply, there will be expansion packs or yogurt with mold long phenomenon. 7 ℃ to 20 ℃ temperature short-term will not damage the quality of yogurt, but long-term storage, it will shorten the shelf life of yogurt, this time not on the package shelf-life could get to do a standard. "

Hong Kong Daily News reporters Wang Jianshi and Xi Shengwang photography intern on Wang Kun Kun month


date:2011/10/22        
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