Recently, the Hangzhou Municipal Market Supervision Bureau conducted supervision and sampling on foods in production and circulation. Among them, the residual amount of cold sea bream aluminum, ready-to-eat sea bream aluminum was unqualified, and the unqualified products found in the above food safety supervision sampling inspection, Hangzhou The market supervision authority has been handed over to the relevant departments for disposal.
At present, the implementation of 'ban aluminum order' has been implemented for nearly three years. However, in the food supervision and sampling inspection issued by the food and drug regulatory authorities in the past two years, the aluminum products such as steamed bread and other fried noodles have exceeded the standard. In addition, the residual amount of aluminum in cold sea bream aluminum, ready-to-eat sea bream also appeared unqualified. It can be seen that the use of aluminum-containing food additives in excess and excess is still prohibited.
The amount of ready-to-eat jellyfish is unqualified. The food detector does not exceed the standard aluminum content.
As we all know, aluminum is a toxicologically low-toxic metal element, generally does not cause acute poisoning, but it will accumulate in the human body after excessive intake. Long-term intake of excessive aluminum-containing food will affect the nervous and skeletal system, leading to intellectual development. Obstacles, serious can lead to some diseases. In contrast, China's dietary aluminum intake is higher than other countries. Therefore, measures to reduce the dietary aluminum intake of our residents to reduce the health of excessive aluminum intake may bring Risk is imperative.
According to relevant sources, the aluminum in food is mainly from food additives containing aluminum, such as curing agents for sea bream processing, leavening agents for pasta products, anti-caking agents for food ingredients, and carriers for pigments. It is the main source of dietary aluminum exposure for Chinese residents. On the one hand, it is necessary to strengthen supervision and the formulation of relevant policies and regulations. On the other hand, the use of advanced food testing equipment to strictly control the aluminum content in food, in the country requires aluminum in food. Under the premise of using the amount, prevent the aluminum content from exceeding the standard.
The author has learned that in addition to fried noodles, potassium alum and ammonium alum are also commonly used in sea bream processing, fans, and noodles. According to regulations, the amount of aluminum residue after sea bream production should be ≤ 500 mg / kg, not excluding some In the informal store, the salads, side dishes, grilled ingredients and other non-staple foods are in excess of aluminum.
We know that the processing methods of sea otters vary from place to place in the coastal areas. The more scientific ones are the three-way processing method. Generally speaking, it is first necessary to put the required glutinous powder (alum must be pulverized into fine powder in advance) and put it into the water to stir evenly. During the process of placing the carcass, gently stir it so that the carcass can absorb the sputum evenly. After that, it can be fished out in about 15 hours, repeated twice, which is called the 'three-strip processing method'. In this case, In the processing of jellyfish, repeated soaking of salt and strontium mixture, the control of aluminum residue can not be ignored.
It is understood that the use of spectrophotometry for the detection of aluminum is currently used in the market, which has the advantages of high sensitivity, simple operation, and rapidity. In the spectrophotometer, the light of different wavelengths is continuously irradiated to a certain concentration of the sample solution ( When the salt immersion solution is used, the absorption intensity corresponding to different wavelengths can be obtained, and the absorption spectrum curve of the substance can be drawn. Finally, the sample concentration is calculated according to the formula and the law.
In addition, inductively coupled plasma mass spectrometry can also be used for the determination of aluminum in foods. However, due to the high comprehensive cost of instruments used in inductively coupled plasma mass spectrometry, most detection mechanisms and food processing companies still use spectrophotometry. The precision and accuracy of the measurement, the instrument used should be in accordance with the national metrological verification procedures, regular calibration verification.
In fact, whether it is a pasta product or a seaweed processing, there is a certain requirement for aluminum content. Excessive addition not only violates the relevant provisions of the national standard, but also has a certain impact on the food safety of consumers. However, the author believes that with the 'ban Aluminum makes 'continuous advancement, and the use of aluminum content testing equipment, strict control of aluminum content, in order to prevent exceeding the standard, to ensure product quality and safety.