How to distinguish corn grades
Release time:
May 29,2019
There are three national quality standards for corn in China, which are the most basic national standard for corn, the national standard for feed corn and the national standard for industrial corn. These three standards are interrelated and have their own characteristics. Corn national standard is a general standard for bulk corn, which is widely used in the purchase, storage, transportation, processing and sales of commodity corn. The feed corn standards and industrial corn standards are more targeted, and there are some changes and adjustments on the basis of the national standard of corn.
The common point of these three standards is that water, impurities, imperfect grains and moldy grains are the main indicators to measure the quality of corn. The difference is that in addition to retaining the main indicators such as bulk density, the technical index of crude protein is added to feed corn, while industrial corn abandons the index of bulk density,
Generally speaking, the indexes of bulk density, impurities, moisture, imperfect grains and moldy grains are the most basic and important indexes to measure the quality of corn, which are widely representative and authoritative.
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