A variety of amino acids constitute the protein, which is also the main component of the cells and organs. It is essential for growth and development, and it is also a basic nutrient necessary for life activities. It cannot be replaced by other nutrients. Various feed crude protein content and quality vary widely. General animal feed has high content, good quality, low content of plant feed, and poor quality. In vegetable feed, oil cake feed and legumes contain more protein, grasses contain less protein, straw feed content Less, poor quality. For the protein content of wheat, automatic Kjeldahl determination can be used for effective detection and determination. Add Wechat to browse professional information anytime, anywhere:
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The crude protein content of wheat grain is generally in the range of 11.0% to 18.0%. In the evaluation system of wheat quality (nutritional quality, edible quality), the quality and quantity of crude protein occupy an important position. Canada and other countries classify wheat into strong gluten wheat, medium gluten wheat, and soft wheat based on crude protein content. In China, crude protein content is an important characteristic index in the evaluation system of high-quality wheat. Therefore, it is of great practical significance to have a good grasp of crude protein testing technology.
Wheat grain consists of cortex, endosperm and embryos that constitute the structure of the wheat grain. Most of the endosperm starch, a small part of the nitrogenous substances and cellulose, the outermost layer of the endosperm is the aleurone layer, the bread is coated with the starch endosperm, after the wheat is ground, the starch endosperm is the main component of the wheat flour, and the bran It is mainly the aleurone layer and its outer skin. It can be seen from the above measurement data that the grinding system of the experimental mill basically retained the innermost layer of aleurone and pebbles in the skin layer, so the crude protein content of DF and XF is highest compared to other layers, and the endosperm away from the cortex The crude protein content of the central layer (1M) was again the lowest, and the endosperm surface layer (2M) was slightly higher than the endosperm center layer (1M).
The automatic Kjeldahl nitrogen analyzer fully meets the requirements of the instrument for crude protein determination. The determination of crude protein content in wheat grains using a nitrogen determination instrument, simultaneous determination of its wet gluten value of wheat flour and analysis of the correlation between the two found that there is a high correlation between them; the final use of nitrogen determination instrument on wheat tissue structure In the experiment for determining the crude protein content of the approximate components in each layer, through data analysis, we can clarify the approximate distribution of crude protein in each layer, which has very important guiding significance for us to fully understand the grain structure of wheat. 
