Recently, CCTV exposed the "problem soy sauce" using industrial brine as a raw material for soy sauce, which caused a sudden uproar. There are many impurities in industrial salt, the most common of which are sodium nitrite and heavy metal ions. Among them, the heavy metal content may be higher than edible salt, but it does not necessarily exceed the standard. Sodium nitrite, which is even more harmful to human health, is missing from the current standard testing of soy sauce. Because the edible salt has been processed, it already contains no or very little sodium nitrite, so the national standard does not detect this item, which just let the unscrupulous businessmen take advantage of it. Sodium nitrite, commonly known as nitrite, is not only a carcinogen, but ingestion of 0.2 to 0.5 grams can cause food poisoning, and 3 grams can be fatal. Therefore, the dosage is strictly limited when used in food additives.
In life, drinking water, vegetables, food, fish, meat products, pickled cabbage, overnight cooking, etc. that contain a large amount of nitrate and nitrite can be directly poisoned by humans after being eaten by humans, and nitrate is in the human body It can also be reduced to nitrite. GB 5009.33-2010 "National Food Safety Standard Determination of Nitrite and Nitrate in Food" stipulates the determination method of nitrite and nitrate in food by ion chromatography and ultraviolet spectrophotometry.
Pursuing the business philosophy of "achieving the health of mankind and the earth", Shimadzu Corporation, which protects the safety of people's tables, has launched the "Solution of Nitrite in Soy Sauce and Its Products". The solution contains 4 application reports, including 1 IC and 3 UV. The application method is as follows:
Determination of nitrite content in pickled vegetables by ultraviolet spectrophotometry ................................................
Determination of Nitrite Content in Sweet Noodle Sauce by Ultraviolet Spectrophotometry Duan Weiya
Determination of nitrite content in soy sauce by ultraviolet spectrophotometry ......................................................
Determination of the content of nitrite, nitric acid and ions in soy sauce by ion chromatography ...
For details, please click to download the latest solution: "Solutions for the detection of nitrite in soy sauce and its products".
About Shimadzu
Shimadzu Enterprise Management (China) Co., Ltd. is a local legal person company established in China in 1999 by Shimadzu Corporation to expand the scale of its business in China.
At present, Shimadzu Enterprise Management (China) Co., Ltd. has 13 branches throughout China, and its business scale is continuously expanding. There are analysis centers in Beijing, Shanghai, and Guangzhou; a network of sales agents covering 30 provinces across the country; and more than 60 technical service stations to build a complete system for providing good services to users.
As a global production base, Shimadzu has built a product production and supply system not only for Chinese customers, but also for the world, and strives to build a product production system that meets the requirements of the Chinese market. With the goal of "for the health of mankind and the earth", Shimadzu will always strive to provide users with more advanced products and more satisfactory services.
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