Shun Net - Ji'nan times
oil bar, this traditional Chinese dough is the most intuitive memory of many people for breakfast. It is loved by all kinds of consumers, old or modern. There is a popular piece on the Internet: a foreign teacher buys oil sticks every day in rain or shine to the street breakfast stalls.
Golden appearance concealed hidden worries. Recently, some vendors have revealed that some vendors are looking good for oil sticks, adding alum, which leads to excess aluminum, and long term aluminum strips can damage brain cells and get Alzheimer's disease.
is that true? How about the fried bread sticks on the market in Ji'nan? This newspaper will help you uncover the truth.
This version of the photo was taken by reporter Zhang Gang
oil, because of cheap price, edible convenience delicious and much loved by the consumers. However, recently, some vendors have revealed that some vendors are looking good for oil sticks and adding alum, which leads to excess aluminum residue, and the long term aluminum strips are easy to get Alzheimer's disease.
is this true? How to distinguish the oil strips from alum? How about the oil strip in the Ji'nan market? For this reason, the reporter bought 4 samples of oil strips randomly, and asked the Ji'nan quality supervision and Inspection Bureau to carry out the test and uncover the truth through accurate data. [experimental materials]
A, purchased from a chain restaurant in hero mountain road, purchased from a sample of B from a chain restaurant in the Chaoshan street, purchased from the sample C of the south village vegetable market in seven Li mountain, and purchased from the sample D of the farm trade market of the Shiqiao bridge, each 200g. (see above)
[experiment steps]
1. the reporter sent the purchased twisted dough sticks to Ji'nan quality and Technical Supervision Bureau, and numbered in sequence.
2. experimenters, according to GB2760-2011 "standard of food safety standard for food safety standard for food safety", cut 4 pieces of oil strips to pieces, add distilled water and reagents into the oil bar solution, through ultrasonic extraction, filtration, reagent, static and other procedures.
3. the experimental personnel poured 4 kinds of solutions into the colorimetric dish respectively and detected them in the instrument.
[experimental results]
oil strip sample A test results aluminum content is 8.86mg/kg
oil bar samples, aluminum content is not detected
C aluminum content of oil bar sample is 647mg/kg
D aluminum content of the oil bar sample is 736mg/kg.
in the relevant standards promulgated by the state, the aluminum content and frying oil of the fried dough sticks are clearly stipulated, and the aluminum content should not be higher than 100mg/kg. It can be seen that 2 of the 4 fried dough sticks from the chain fast food restaurant were qualified, and the other 2 street stalls were over five or six times the aluminum content. (see above)
[experimental interpretation]
1. why did some of the oil strip be exceeded so much?
this is because the lash added alum in the production process. Alum is chemically named aluminum potassium sulfate. After adding fried bread sticks, a certain amount of aluminum will be produced during frying. The traditional method of making fried bread sticks is to mix alum, alkali, salt and other ingredients into flour to form alum alkali dough. Alum has no nutritional value, it is a pure adjustment of taste, add crisp additives. Aluminum accumulates and acts on the body, which can damage brain cells. It is one of the causes of Alzheimer's disease.
2. why is there still a small amount of aluminum in the qualified oil bar?
natural food itself is with a small amount of aluminum, even if no aluminum containing additives are added, a certain amount of aluminum can be detected, but the amount is far below the national limit, and consumers don't have to worry too much. Wu Lei, director of the food production supervision department of the Ji'nan Municipal Food and drug administration, said that the food additives were added to the food additives based on the scales and other tools.
oil bar difficult to digest four kinds of people should not eat
oil sticks belong to high temperature fried food, high melting point, long stay in the stomach, difficult to digest, but also affect sleep. Most of the nutrients of dough sticks are destroyed. High temperature oil also contains certain toxic substances, which will affect the recovery and health of the body. Ji'nan Municipal Bureau of food and drug administration officials suggest that consumers should try to choose regular fast food restaurants and markets which are in good health conditions and meet health requirements. It is best not to buy oil strips of unlicensed processing by roadside vendors.
recovery period patients and elderly people should not eat fried dough sticks. As the physiological function of the elderly is decreasing, the function of the stomach is reduced, the intestinal absorption capacity is poor, and it is not suitable to eat greasy and indigestible food.
it is not suitable for pregnant women and children to eat. It is very important for pregnant women to choose proper diet and avoid food that is irritating and undigested, and the oil sticks are not easy to digest and do not meet the dietary requirements of pregnant women. Fried dough sticks affect children's absorption of calcium, which can cause children to have partial food and affect their normal development.
(>) teach you a trick
four steps to identify the oil bar with alum
see, buy back from the breakfast stall just out of the pot of oil, hot, fat toot, but take home after taking out the bag from the bag, you will find the oil strip lean, cool after a little black. This kind of fried bread sticks not only added alum, but also used problems like oil, old oil and so on.
two smell, while the oil is still hot, after the break, use the nose to suck a few mouthfuls, if you feel special pungent, it is proved that the oil bar has a serious problem of alum exceeding the standard.
three taste, alum excessive fried dough sticks, have a feeling of astringent, eat hard sticky teeth, toughness is particularly large, may be excessive addition of alum.
four, aluminum containing twisted dough sticks are generally lighter and lighter in weight than aluminum fritters.