KFC illegally added "oil filter powder" frying oil for reuse (you will know after reading it patiently).
On March 8, China Business Daily reported that Mr. Guo, an citizen of Anhui, was familiar with the food processing industry. By chance, he discovered an amazing secret: after food is fried in oil, the oil usually becomes turbid or even deteriorated, but if a substance is used in frying oil at this time, the turbid frying oil will become clear, just like new oil. To this end, he spent nearly a year to understand on the grounds of opening a food processing factory.
According to Mr. Guo's investigation, this substance is commonly known as "oil filter powder". Its main function is to prolong the service life of oil and never scrap it.
Around February 2006, Mr. Guo contacted a retailer selling "oil filter powder" through the Internet. The retailer surnamed Chen specializes in the wholesale and retail of "oil filter powder" in Ningbo. After many phone calls, Mr. Chen sent a message to Mr. Guo's mailbox explaining the real situation of "oil filter powder", which surprised Mr. Guo. According to his understanding, the use of edible frying oil in this way may be suspected of "second-hand oil". With these questions, Mr. Guo reflected this matter to the reporter of Huashang Daily.
Boss Chen, who runs "oil filter powder" in Ningbo, sent the following words to Mr. Guo:
"Mr. Guo: ... if you have to deal with a lot of oil every day and have high requirements on food quality, then the cost savings will be obvious. Many export food enterprises use our products at the request of customers ... From the current situation, domestic food hygiene standards have not been strictly supervised and implemented, so most domestic manufacturers can use frying oil for 3 days, 7 days, or even never scrap it! Although it has already exceeded the standard, it is seriously harmful to human body, but it saves costs. Therefore, at present, the customer base of our products are all large enterprises, especially export enterprises ... "The signature is" Chen XX ".
The reporter also saw in another "Research Report on Processing Fried Oil to Maintain Oil Quality" provided by Chen Mou that this kind of "oil filter powder" for processing fried oil was added for the first time after the new oil was used for one day.
According to the test conditions in this report, frying oil refers to used oil, and the free fatty acid concentration (equivalent to acid value) of the oil is lower than 1.5% when "oil filter powder" is added. Only below 0.7%, add 2% oil every day; Between the two, the amount can be appropriately increased; If it is higher than 1.5%, it is recommended to discard it.
Under normal use, the free fatty acid concentration of frying oil will be greater than 2% after 2-3 days.
At the same time, the report pointed out that the effects of using "oil filter powder" to treat frying oil are: completely controlling the acid value (the report indicates: artificially controlling the acid value to delay the acid value in the oil from reaching the scrapping standard), and the oil color is over 70%. (The report shows that the discoloration of frying oil is also one of the means to prolong the service life of frying oil) and so on. Their own experiments found that not a drop of oil had been discarded since it was used in June 2003. "Oil filter powder" is produced by Dallas Group.
After the Spring Festival, Mr. Guo once again got in touch with the person in charge of an "oil filter powder" company in Shanghai, which is the distribution company of this product in China. The person in charge of the company faxed an English document, which was translated by the reporter and showed the quality certificate of Dallas Group in the United States. The certificate pointed out that their products were produced in accordance with the provisions of the US Food Chemicals Regulations on edible oil filtration. Another material safety data report also pointed out that "there is no guarantee that this chemical is harmless when used in accordance with appropriate safety regulations and normal operating procedures".
Sudden visit to KFC:
Both Yulin Store and Xianyang Store are using "oil filter powder"
Field test: White powder makes turbid frying oil transparent.
According to the information provided by Mr. Guo, on February 27, 2007, our reporter went to the KFC chain store in Yulin City for further verification.
On the afternoon of the same day, the reporter got in touch with the Yulin Municipal Health Bureau, and the director of the bureau attached great importance to this. At 9 o'clock in the evening, the reporter and his party arrived at the KFC store in Xinjian Street in advance. There are many customers who come to eat in the shop, most of them are young people, and there are also many children.
In the afternoon 10: 30, KFC customers left one after another, and employees began to clean the hall and kitchen.
In the afternoon 10: 45, the health law enforcement officers waiting outside the store entered KFC for inspection, and the reporter accompanied the law enforcement officers into KFC kitchen. In the kitchen, I saw the staff cleaning and a male staff cleaning a frying pan. The frying pan is divided into two oil tanks, in which the frying oil in the left oil tank is clear, the oil in the right oil tank is turbid, and some fried food particles are floating in the oil tank.
Mr. Zheng, the manager on duty at the store, explained that the frying oil in the left fuel tank was filtered with "oil filter powder", so it was clearer. At the request of law enforcement officers, the staff filtered the turbid frying oil in the right oil tank according to the operating rules.
Author: Comet boiling point 2007-3- 10 22:56 Reply to this statement.
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KFC illegally added "oil filter powder" frying oil for reuse (you will know after reading it patiently)
The reporter saw that the workers pushed the oil filter pool to the bottom of the wok, fixed the oil filter paper with a splint, then sprinkled a small bag of white powder on the oil filter paper, and finally placed the oil filter pool at the bottom of the wok, and connected the oil filter pool with the wok with a pipe.
After the oil temperature rises to the specified temperature, workers clean the oil tank with a brush, turn on the switch of the oil tank, and let the turbid frying oil in the oil tank flow into the oil filter pool below. After filtering for a few minutes, a large number of yellow paste impurities remain in the oil tank. After the oil tank was cleaned, the staff lifted the filtered frying oil into the oil tank. After a few minutes, the tank was filled with filtered frying oil. The reporter saw that after such a simple treatment, the originally turbid frying oil suddenly became clear and bright.
Yulin store: "oil filter powder" plays the role of "polishing"
Why does this white powder have such a magical effect? What product is it?
According to Mr. Zheng, the duty manager of KFC, this white powder is distributed by the company. The product name is "oil filter powder", which is imported from America. In the store's warehouse, the reporter saw that this white powder was packed in a paper box with KFC's logo“KFC "printed on it and the Chinese characters" oil filter powder "printed on it. Look carefully, there is a small label on the outer packaging, which reads the product name: oil filter powder; Ingredients: amorphous hydrated magnesium silicate, 40 pounds in bulk; Manufacturer: Dallas Company, USA.
The inner package of "oil filter powder" is a white plastic bag with such a Chinese prompt: "Inner package: amorphous hydrated magnesium silicate. Caution: Avoid eye contact. If you get into your eyes, rinse with clear water. If you still feel unwell, you need to see a doctor. However, the reporter also noticed that the staff of the store did not have corresponding protective measures during operation.
On the internal and external packaging, the reporter didn't see the instructions for the use of the product, nor did he have the hygiene license and hygiene standards for the product, as well as the instructions for the use of "oil filter powder", product inspection certificate and batch number. And even the words "food additives" are not marked.
Manager Zheng introduced that the frying oil in the oil pool is about 20 kilograms, and more than 300 grams of "oil filter powder" needs to be added.
The following is a conversation between the reporter and Manager Zheng-Note: What is the main function of "oil filter powder"?
Zheng: It can "polish" turbid frying oil. The process of oil filtering is called "polishing" in our jargon, which removes impurities in frying oil, improves the color of fried food and prolongs the service life of frying oil.
Reporter: How long does it take to fry a can? Zheng: According to the quantity of fried food, it is usually replaced once every three days or longer. Reporter: How to identify the need to replace frying oil?
Zheng: There are papers issued by KFC. If the quality of the oil exceeds the blue mark of the test paper by more than three squares, you know that the frying oil needs to be replaced.
The reporter saw that Manager Zheng provided a test paper 0.7 cm long and 9.5 cm long in Zhang Kuan. There are four blue squares on it, and the outer packaging of the test paper is full of English labels.
Reporter: How is this inspection method formulated and is there any implementation standard?
Zheng: We follow the standards of KFC International, and we don't know anything else.
Reporter: Repeated use of frying oil and adding "oil filter powder" are harmful to human body?
Zheng: It shouldn't hurt. We always do.
According to reports, the use of this "oil filter powder" in frying oil can reduce the acid value, peroxide value, color, smell and heavy metals of frying oil.
Xianyang Store: The frying oil can be used for 10 days after polishing.
Is the use of "oil filter powder" in other KFC stores the same?
On February 5th 10: 30, there were many consumers in a KFC store on Renmin Road in Xianyang, many of whom were children. Under the leadership of the law enforcement officers of the Municipal Health Bureau and the Qindu District Health Supervision Office, the reporter entered the operation room of the store.
In the frying area, two oil tanks were filled with used cooking oil, which was very turbid. In an iron bucket next to it, a white plastic bag contains white powder, which is introduced as "oil filter powder".
"'oil filter powder' is spread on oil filter paper, and oil circulates in the oil pool." Zhang Jing, the person in charge of the store, told the reporter on his own initiative.
Zhang Jing introduced that after the oil is "polished", under normal circumstances, the long oil can be used for about 10 days, and the short oil can be used for five or six days. The specific usage needs to be tested with test paper, which is limited by business conditions.
According to the store records, the oil in the tank was put in the evening of February 12. They insist on using "oil filter powder" to "polish" the oil in use twice a day, from 6: 30 to 7: 00 in the morning, and the noon time is uncertain, usually 1:00-2:00.
Author: Comet boiling point 2007-3- 10 22:56 Reply to this statement.
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3 KFC illegally added "oil filter powder" frying oil for reuse (you will know after reading it patiently)
The quality of oil should also be measured by test paper, and according to the test paper, the oil display test paper only changes one color that night, but it usually stops using after three squares of blue turn yellow and needs to be replaced.
Similarly, the person in charge of the store did not show the law enforcement officers the corresponding approval procedures for using "oil filter powder".
Law enforcement officer: I have never seen the product of "oil filter powder"
The law enforcement officers of Yulin Health Bureau said that they had visited KFC many times before, but they had never seen the product of "oil filter powder".
From the evening of February 27th 1 1 to 2 a.m on February 28th, law enforcement officers repeatedly urged Manager Zheng of KFC to provide legal information for purchasing and adding "oil filter powder". However, manager Zheng did not provide the required materials, but only provided the internal operation process.
At the repeated request of law enforcement officers, Manager Zheng said, "Of course we have legal procedures, but we really can't provide them today."
That night, law enforcement officers conducted spot checks on the frying oil in two oil pools before and after filtration, and conducted experiments on the spot. Before filtration, the two squares of test paper turned yellow, but after "oil filtering powder" and "polishing", the color of frying oil became bright and clear. Law enforcement officers found that only 1 grid of test paper turned yellow, which showed that "oil filter powder" played an important role.
At 3: 00 am on February 28th, Yulin KFC store failed to produce the relevant certificate that "oil filter powder" must be approved by the Ministry of Health, and law enforcement officers sealed the product on the spot according to the relevant provisions of the Food Hygiene Law of People's Republic of China (PRC).
According to reports, if the production, operation or use of food additives does not meet the hygiene standards or relevant regulations, it will be punished in accordance with the provisions of Article 44 of the Food Hygiene Law.
Food experts say:
Repeated use of frying oil is easy to produce carcinogens.
Regarding the use of "oil filter powder" in KFC, Professor Qiu Agronomy and Professor Li Jianke from the Department of Food Engineering of Shaanxi Normal University said in an interview with this reporter that they had never seen this product and there was no research in this field in China at present. There is no product repeatedly used in edible oil filtration in China. As the name implies, it should be physical adsorption. However, the two professors said that the research report on the treatment of frying oil to maintain the quality of oil was incomplete.
They think that only physical adsorption has little effect on food, but the nutritional value of frying oil will definitely be greatly reduced if it is reused. Repeated use of vegetable oil at high temperature will lead to oxidative rancidity at high temperature, and the rancid oil will destroy cytochrome enzymes and other enzyme systems. Long-term intake of rancid and deteriorated oil is harmful to health.
At the same time, repeated heating will make edible oil oxidized and easy to rancid. In the experiment of this report, only the concentration (acid value) of free fatty acids in edible oil was detected, and another important physical and chemical index-peroxide value-was not reflected in the report. Controlling these indexes well can keep the freshness of edible oil and make the oil reach the national standard. Repeated heating of oil can easily produce other harmful substances. For example, when French fries are used, carcinogens such as acrylamide may be produced, and when fried chicken is used, carcinogens such as benzopyrene may be produced. However, the report did not reflect the detection of harmful substances produced.
According to two professors, if you want to use this product in China, you must obtain a certificate from the relevant state department before you can use it. However, it is necessary to test the oil before and after using the "oil filter powder" to determine whether the filtered frying oil will contain harmful substances.
Similarly, the director of Shaanxi designated testing laboratory of national food safety and the head of physical and chemical laboratory of Shaanxi Provincial Center for Disease Control and Prevention also hold the same view. Repeated high-temperature frying of food with edible oil will produce carcinogens such as benzopyrene.
The person in charge said that at present, the country has only begun to study and formulate the standard of frying oil, which has been included in China's food safety planning. In the past two years, our province has been doing this work, only collecting fried dough sticks. The collection points are distributed in An, Baoji, Yan 'an, Ankang, Fuping in Weinan and Jingyang in Xianyang.
The latest development of the incident:
Shaanxi Provincial Health Department urgently reports to the Ministry of Health.
Xianyang, Yulin and Xi 'an temporarily detained "oil filter powder"
Yesterday afternoon, the reporter came to Xi 'an Company of Yum! Brands to be interviewed. The receptionist said that the head of their public affairs department was not here and could not be interviewed. At 7 o'clock last night, the reporter interviewed Minister Zhu of the company's public affairs department by telephone. Regarding the question that KFC stores added "oil filter powder" to frying oil, Minister Zhu did not answer directly, but explained: "All products and raw materials are safe and reliable, and adding" oil filter powder "conforms to national regulations and standards."
The reporter asked again: "What are the regulations of the state? Is the addition of' oil filter powder' approved by the Ministry of Health? " Minister Zhu did not directly answer the reporter's question on the phone. The reporter asked many questions, but Minister Zhu always refused to answer because he couldn't hear clearly, and asked the reporter to send a fax to their unit. Finally, under the patient questioning of the reporter, Minister Zhu hung up the phone.
Last night, the reporter learned from the relevant person in charge of the Provincial Health Department that as of yesterday afternoon, Yum! Xi 'an Company did not provide the approval documents from the Ministry of Health. At the same time, there is no "oil filter powder" in the list of food additives of the Ministry of Health. From February 15 to yesterday ***20 days, Xianyang Municipal Health Bureau, Yulin Municipal Health Bureau and Xi Municipal Health Bureau successively inspected KFC stores and temporarily detained "oil filter powder".
Yesterday, the Provincial Health Department reported the situation to the Ministry of Health with urgent documents, and sent the sampled frying oil and "oil filter powder" to the Ministry of Health for inspection.