Rice quality appraisal

Rice refers to unprocessed rice, that is, rice seeds. It is the main product of the rice plant and is the grain obtained after harvesting, threshing and other steps.
Quality problems that rice may encounter include pests and diseases, mildew, high impurity content, and inappropriate moisture. For example, rice may be invaded by diseases such as rice blast and sheath blight during its growth, affecting its growth and quality. If rice is stored under improper storage conditions after harvesting, it may become moldy and produce mycotoxins, posing a threat to human health. In addition, impurities in the rice, such as stones and weed seeds, not only affect the purity of the rice, but may also interfere with subsequent processing. Rice with too high or too low moisture is prone to problems during processing and storage. For example, too high moisture may cause the rice to become moldy, while too low moisture may make the rice too fragile and easily broken.
In rice quality appraisal cases, Zhongke Testing can provide rice quality appraisal services.

1, appearance
The appearance of rice is one of the important indicators to measure the quality of rice. The appearance characteristics of good-quality rice are plump, plump grains, no brokenness, no mildew, no peculiar smell, no abnormal color, etc.
2, fatty acid content
The fatty acid content in rice has an important impact on rice quality, safety and hygiene. Too high or too low fatty acid content will affect rice quality.
3, moisture content
The moisture content of rice is one of the most important indicators in rice. The qualified moisture content of rice should be 13%-15%. Too high or too low will affect the quality and processing quality of rice to varying degrees.
4, physical and chemical indicators
The physical and chemical indicators of rice include acid value, ash, crude protein, amino acids, gum, etc. These indicators are important standards for evaluating rice quality and have a great impact on enterprise processing.

GB 1350-2009 Rice
GB/T 17891-2017 High-quality rice
GB/T 22499-2008 Selenium-enriched rice
GB/T 21015-2023 Technical specification for rice drying
GB/T 21719-2008 Rice polishing rate inspection method
GB/T 20569-2006 Rice storage quality judgment rules
GB/T 5495-2008 Grain and oil inspection Rice roughness rate inspection
GB/T 5009.180-2003 Determination of oxadiazon residues in rice and peanut kernels
GB/T 5009.115-2003 Determination of tricyclazole residues in rice
GB/T 21499-2008 Rice Determination of potential rice yield of rice and brown rice
0GB/T 24535-2009 Grain and oil inspection Rice grain type inspection method
1GB/T 35865-2018 Grain and oil inspection Determination of rice polishing rate Image analysis method
2GB/T 24896-2010 Grain and oil inspection Rice moisture content determination Near infrared method
3GB/T 35881-2018 Grain and oil inspection Determination of rice yellow grain content Image analysis method
4GB/T 24897-2010 Grain and oil inspection Determination of crude protein content of rice Near infrared method
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