Abstract: Moon cakes are hot before Mid-Autumn Festival. Xinhua News Agency's "Xinhua Viewpoint" reporter found that the shelf life of moon cakes with different brands and tastes ranges from 2 days to 12 days, and even the shelf life of moon cakes with the same taste may be several times different, which is puzzling ..... Before the Mid-Autumn Festival, moon cakes are hot first. Xinhua News Agency's "Xinhua Viewpoint" reporter found that the shelf life of moon cakes with different brands and tastes ranges from 2 days to 12 days, and even the shelf life of moon cakes with the same taste may be several times different, which is puzzling. How many mysteries are there in the shelf life of moon cakes, who should be in charge of the shelf life, and whether there is a gap in legal supervision? The reporter conducted an investigation on this. The shelf life of moon cakes is quite different. Many mysteries lead to doubts. The reporter visited several supermarkets and found that the shelf life of moon cakes is really a difficult problem to explain clearly. After induction, there are the following "mysteries": First, the shelf life of moon cakes with different tastes is very different. The reporter saw in the Wujiaochang store of Wal-Mart that the shelf life of the bean paste moon cake in Maiyuan is 2 days, while that of Yuecaifang's sugar-free moon cake is 12 days. The shelf life of many other brands of moon cakes ranges from 45 to 6 days. Second, even the same taste, the shelf life of different brands of moon cakes is very different. For example, the shelf life of the ice-covered moon cakes of Lao Zhou brand is 12 days, while the shelf life of the ice-covered snow moon cakes of Maiyuan is only 4 days; Yuecaifang's sugar-free moon cakes have a shelf life of 12 days, while Sanniu's sugar-free moon cakes have a shelf life of 9 days. The shelf life of bean paste moon cakes of Laodachang and Zhenlaoda is 45 days, but that of Maiyuan is 2 days. Third, the moon cakes of the same brand with different production dates have the same expiration date. A reporter from Tesco Supermarket saw that although the production dates of bulk moon cakes in Kutokuhayashi were July 3 and July 26, the shelf life of them all said "Please eat before September 3". Fourth, the date of production of some brands does not meet the standards. Wang Guojun, a senior engineer in Shanghai Modern Food Studio, said that he had previously seen in Wal-Mart that the carton packaging of a well-known brand of moon cakes was printed with the production date, but the packaging in the box had no production date at all. The survey found that the price of moon cakes with the same taste and different brands will be higher if the shelf life is short. For example, the sugar-free moon cake mentioned above, the shelf life of Sanniu is 28.8 yuan per catty in 9 days, while the price of Yuecaifang is 22.8 yuan per catty in 12 days. This mystery of shelf life has puzzled many consumers. "Preservative" is the secret of longevity of moon cakes, and what factors are related to the "hand shaking method" of small enterprises, which makes consumers puzzled. Fan Zhihong, an associate professor in the Department of Nutrition and Food Safety, College of Food Science, China Agricultural University, told the reporter that the shelf life has a certain relationship with processing technology, storage conditions, stuffing varieties, etc., and also has a certain relationship with the addition of preservatives, but it cannot be said that a long shelf life will definitely add more preservatives. "But how much preservatives are added is really one of the secrets of the longevity of moon cakes." Wang Guojun told reporters that large enterprises have strict control over preservatives, but many small manufacturers have loose supervision over additives, especially preservatives, and often use the "hand shaking method" to add them. "That is to say, when the hand is shaken, it will increase. The moon cakes with a shelf life of one month will actually not be bad for three months. When shopping in the supermarket, I saw moon cakes with no deoxidizer, unknown manufacturer, very cheap price and long shelf life, which is likely to have problems. " After the implementation of the new Standard for the Use of Food Additives in 211, many preservatives can no longer be used to add moon cakes. Wai Shum, general manager of Shanghai Xiangteli Food Development Co., Ltd. said: "In fact, the progress of technology can replace some preservatives. For example, we stopped buying lotus seed paste with bleaching powder a few years ago, and we also adopted the' external control method' in anti-corrosion. That is, adding a deoxidizer to the package instead of adding a preservative directly to the moon cake. " According to industry insiders, the manufacturers of bulk moon cakes, which are generally sold through grocery stores and even some supermarkets, still keep fresh by adding a lot of preservatives in order to control costs and extend the shelf life. It is understood that an 8g moon cake packed with deoxidizer will cost .3 more than that packed with preservative to .4 yuan. The length of shelf life "the enterprise has the final say". Managers of many food enterprises told reporters that the length of shelf life is "the enterprise has the final say". People in the industry who have been engaged in the production of moon cakes for many years pointed out that the shelf life of common moon cakes in the industry is currently "determined" to be two months, and most of them uniformly "stipulate" that all moon cakes produced at different times will expire on September 3. "This is for fear that consumers will find trouble in the future if the time scale is long, and they will not be sold out if the time scale is short, so it has become a' established' practice." Regarding the shelf life of food, there was a widely circulated "regulation" on the Internet. However, Wang Guojun told reporters that the State Light Industry Bureau has been revoked, and there is indeed a "national standard" regulation on the shelf life of food in the era of planned economy; However, after the liberalization of the market, different enterprises have different production conditions and processes, and it is difficult to unify the shelf life. These regulations have been cancelled. The cancellation of the regulations has given some small enterprises an opportunity. According to industry insiders, the standard practice is that enterprises conduct various tests before the new products go on the market, and then conduct tests after a while, and finally scientifically determine the shelf life. However, many small enterprises will not do this, and others will bid for a few days, which is very arbitrary. Zhenhua Gu, director of the Shanghai Food and Drug Administration, told reporters that the shelf life of food is currently under the control of enterprises themselves, and there is no mandatory regulation by the regulatory authorities; However, the regulatory authorities will conduct spot checks on some products near the shelf life to see if they still meet the due standards and whether they have expired. According to industry insiders, the regulatory authorities rely too much on testing methods. For example, if an additive of moon cakes is not identified in the ingredient list, it is actually like finding a needle in a haystack. "In daily supervision, quality supervision departments and other departments should pay attention to checking the raw material room and the purchase list of the enterprise at the same time, and compare whether the purchased and recorded raw materials are different from the ingredient list, so as to ensure that additives will not become' fish escaping from the net'." < /SPAN> < /td>