Kjeldahl Nitrogen Analyzer manufacturers come to you to understand the Kjeldahl method


Time of issue:

2021-09-15

The defect of the Kjeldahl Nitrogen Analyzer  It can be known from the principle of Kjeldahl nitrogen determination: Kjeldahl Nitrogen Analyzer manufacturers tell you that the Kjeldahl nitrogen determination method is to convert nitrogen-containing organic matter into inorganic nitrogen ammonium sulfate for detection, in order to obtain the measured value of nitrogen content multiplied by a certain coefficient. protein content. And Kjeldahl Nitrogen Analyzer manufacturers tell you that nitrogen-containing organics are not just proteins, but also melamine and so on.

The defect of the Kjeldahl Nitrogen Analyzer 
It can be known from the principle of Kjeldahl nitrogen determination: Kjeldahl Nitrogen Analyzer manufacturers tell you that the Kjeldahl nitrogen determination method is to convert nitrogen-containing organic matter into inorganic nitrogen ammonium sulfate for detection, in order to obtain the measured value of nitrogen content multiplied by a certain coefficient. protein content. And Kjeldahl Nitrogen Analyzer manufacturers tell you that nitrogen-containing organics are not just proteins, but also melamine and so on.

Kjeldahl Nitrogen Analyzer from China manufacturer

The manufacturer of Kjeldahl Nitrogen Analyzer tells you that, in addition to the current national standard for protein content in food, and the internationally accepted determination method is the classic Kjeldahl nitrogen determination method, this provides an opportunity for counterfeiters.

The nitrogen content in the protein does not exceed 30%. The Kjeldahl Nitrogen Analyzer manufacturer tells you that the biggest feature of melamine is that it has a high nitrogen content (66%), and it is colorless and odorless when dissolved in water. The manufacturer of the Kjeldahl Nitrogen Analyzer tells you that by adding melamine to a glass of water, and then using the Kjeldahl method to test it, the result shows that it contains protein.

The manufacturer of the Kjeldahl Nitrogen Analyzer tells you that since the "Kjeldahl method" can only measure the nitrogen content, it cannot identify whether there are illegal chemicals in the product. Therefore, the milk powder added with melamine can theoretically measure higher protein. content.

The above information is the Kjeldahl Nitrogen Analyzer manufacturer's introduction and analysis of Kjeldahl nitrogen determination.