GB/T 25219-2010Inspection of grain and oils - Determination of starch content in maize - Near-infrared method (English PDF)

1 Scope

This standard specifies the method for the determination of NIR corn starch content (dry basis) of the terms and definitions, principles, equipment, measurement results

Processing and presentation, and asked to confirm the process, and the accuracy and precision of the test report abnormal samples.

This standard applies to maize starch content (dry basis) of rapid determination.

This standard does not apply to arbitration inspection.

2 Normative references

The following documents contain provisions which, through reference in this standard and become the standard terms. For dated references, subsequent

Amendments (not including errata content) or revisions do not apply to this standard, however, encourage the parties to the agreement are based on research

Whether the latest versions of these documents. For undated reference documents, the latest versions apply to this standard.

Determination of GB/T 5009.9 food starch

GB 5491 grain and oilseeds testing for sampling, and sample method

GB/T 24895 Inspection of grain NIR calibration model validation and network management and maintenance of general rules

3 Terms and Definitions

Terms and definitions GB/T 24895 regulations apply to this standard.

Principle 4

The use of starch molecules CH, NH, OH and other overtone vibration or rotation of the near-infrared light absorption characteristics of a chemical bond with technology

Chemometrics method to establish the correlation between corn near-infrared spectroscopy and its starch content between the calculated corn starch content of the sample.

5 Equipment

6 Determination