SICHUAN TELOS NEW MATERIAL TECHNOLOGY CO., LTD , https://www.sichuankenlarcutters.com
Determination of Volatile Base Nitrogen in Tuna Fish by Automatic Kjeldahl Determination of Nitrogen and Determination of Volatile Base Nitrogen in Meat and Volatile Base Nitrogen in Fish Meal by Lv Yuqiong et al. Wu Donglin uses automatic Kjeldahl determination of nitrogen in the determination of volatile base nitrogen in aquatic products, meat, and products, and evaluation of uncertainty.
The Kjeldahl nitrogen analyzer designed according to the principle of Kjeldahl nitrogen uses new technologies in chemistry, physics, electricity, and automation, etc. It can process samples in batches, is simple and easy to operate, and is used in foods, crops, fertilizers, soil, water and other substances. The quantitative determination of nitrogen and protein content results in accurate and reliable results, and can meet the requirements of high-throughput detection, and can basically reflect the level of protein contained in the sample. At the same time can also be applied to the determination of volatile base nitrogen, sulfur dioxide lamp material, a wide range of applications.
The main drawback of the Kjeldahl method for automatic Kjeldahl nitrogen determination is the poor character of the method. The measurement results obtained can only represent the total amount of all nitrogen-containing compounds in the sample and cannot accurately represent the protein content. This is because In addition to converting the nitrogen in the protein into (NH4)2SO4, some non-protein nitrogenous compounds (such as alkaloids, urea, melamine, etc.) can also be converted to (NH4)2SO4. When calculating the nitrogen content, consider all The nitrogen is derived from the protein, so the measurement result is higher than the actual value. So Kjeldahl also has this problem.
Therefore, the premise of using the Kjeldahl technique is that the sample is a real protein sample and it is not falsified. With reference to this premise, technology can accurately serve people.
Application advantages and disadvantages of automatic Kjeldahl nitrogen analyzer
Determination of protein in foodstuffs in the national standard method, determination of crude protein in feedstuffs, determination of crude protein in vegetable oils, determination of glutenin, Hu Sigang, Liu Gewei Detection of protein content in skim milk powder by Kjeldahl method, Zhang Yukui Ye Ertai The method for determining the protein content in milk, etc. National standards for the determination of non-protein nitrogen content in milk and dairy products, determination of nitrogen content of starch and its derivatives, determination of nitrogen content in soil, determination of total nitrogen content in compound fertilizers, determination of ammonium nitrogen content in fertilizers, urea ZHU Yamin and Yang Lingjie Research on Automatic Kjeldahl Determination of Ammonia Nitrogen in Water, Tan Jie and Luo Yiyun Determination of Nitrogen Content of Natural Rubber by Automatic Kjeldahl Nitrogen Detector, Xiong Fang, Yi Weiliang Automatic Kjeldahl Determination Nitrogen meter to measure the ammonium content in soy sauce.