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Rice is mainly composed of starch, fat, crude protein, ash, and moisture. When the light source is irradiated to rice flour solution, it absorbs and scatters light. Rayleigh's scattering law proposes the law of scattered light intensity and inversely proportionality. Its applicable condition is that the size of the scatterer is smaller than the wavelength of light.
Based on the national standard method for measuring amylose content, the process of degreasing was eliminated, half of the testing time was shortened, and a convenient, rapid, easy to operate, accurate measurement target was achieved, in line with current domestic and international development in this field. Trends have important practical value and theoretical guidance. In the future, this method can be applied to the detection of amylose content in other crops. Using the theory of degreasing, it is possible to find a method for measuring fat content.
Rice starch and amylose price
The amylose content of rice is an important factor and index affecting its quality, and the measurement of amylose has always been of concern. At present, the measurement method adopted by China's national standard method is the colorimetric method. The advantages of this method are: mature technology, high measurement accuracy, and it is widely used. However, there are also some deficiencies, such as expensive equipment, strong technical, complicated operation, and time-consuming, especially rapid detection and analysis can not be carried out, can not implement effective, efficient and accurate detection, making it difficult for agricultural products by quality and quality supervision. In order to shorten the time and simplify the process, we made improvements to the original method and removed the step of degreasing. If the sample is not degreased, due to the presence of fat molecules, the resulting measurement results will be smaller than the results obtained by the national standard method. Through a large number of experiments, it is proved that the difference between the two is relatively stable. Therefore, the result can be corrected to achieve the same accurate and reliable accuracy as the degreasing measurement. The price of amylose is also affected by its quality.