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GB/T 25219-2010: Inspection of grain and oils -- Determination of starch content in maize -- Near-infrared method
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| GB/T 25219-2010 | English | 139 |
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Inspection of grain and oils -- Determination of starch content in maize -- Near-infrared method
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GB/T 25219-2010
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Basic data | Standard ID | GB/T 25219-2010 (GB/T25219-2010) | | Description (Translated English) | Inspection of grain and oils -- Determination of starch content in maize -- Near-infrared method | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | B20 | | Classification of International Standard | 67.060 | | Word Count Estimation | 6,654 | | Date of Issue | 2010-09-26 | | Date of Implementation | 2011-03-01 | | Quoted Standard | GB/T 5009.9; GB 5491; GB/T 24895 | | Regulation (derived from) | National Standard Approval Announcement 2010 No.6 (Total No.161) | | Issuing agency(ies) | General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China | | Summary | This standard specifies the method for determining the near-infrared analysis of corn starch content (dry basis) of the terms and definitions, accuracy and precision requirements and the test report, principle, equipment, measurement, result processing and presentation, identify and deal with abnormal samples. This standard applies to maize starch content (dry basis) for rapid determination. This standard does not apply to arbitration test. | GB/T 25219-2010: Inspection of grain and oils -- Determination of starch content in maize -- Near-infrared method
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Inspection of grain and oils. Determination of starch content in maize. Near-infrared method
ICS 67.060
B20
National Standards of People's Republic of China
Inspection of grain
Corn starch content was measured by Near Infrared Spectroscopy
Issued on. 2010-09-26
2011-03-01 implementation
Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China
Standardization Administration of China released
Foreword
This standard is based on the classical method based on corn starch content in the rapid determination method for arbitration inspection should have national standards
Conventional methods prescribed, namely GB/T 5009.9 "Determination of starch" shall prevail.
Appendix A of this standard is a normative appendix.
The standard proposed by the National Food Authority.
This standard by the National Standardization Technical Committee OILS.
This standard was drafted. National Food Authority Standard Quality Center, Henan University, Jilin Grain and Oil Quality Supervision and Inspection Station of Anhui Grain
Oil Product Quality Supervision and Inspection Station, Chongqing Grain and Oil Quality Supervision, Inspection Station, Jiangxi Province Grain and Oil Quality Supervision and Inspection Station.
The main drafters of this standard. Tang Ruiming, Wu Chun-rong, Tang Jian Huai, Song length right, Xu Jingjie, Zou Yong, intimate.
Inspection of grain
Corn starch content was measured by Near Infrared Spectroscopy
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
5.1 NIR analyzer. Add OILS NIR network equipment should comply with GB/T 24895 requirements. No added OILS near infrared
Analysis of network equipment, verify eligibility in accordance with GB/T 24895 in the provisions relating to the calibration model validation.
5.2 sample grinding equipment (for measuring powder samples NIR analyzer). particle size distribution and homogeneity of the crushed sample should be consistent with the past
Infrared analyzer calibration model established requirements when, should be used when using the same manufacturing process and model calibration and verification.
6 Determination
6.1 preparation before the test
6.1.1 Sampling and sample decimation executed according to the provisions of GB 5491.
6.1.2 Sample finishing, to remove impurities in the sample.
6.1.3 according to the near-infrared analyzer (5.1) specification requirements for instrument self-test and warm-up test.
6.1.4 In the case where the state of at least a day of near infrared analyzer (5.1) monitoring once with monitoring samples. It should track and monitor the results every day,
The measurement results of the same sample monitoring compared with the initial measurement result, shall ensure compliance with the provisions of 9.2. Monitor sample preparation in accordance with Appendix A
Regulations.
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