GB/T 31577-2015 English PDFUS$299.00 · In stock
Delivery: <= 3 days. True-PDF full-copy in English will be manually translated and delivered via email. GB/T 31577-2015: Inspection of grain and oils -- Determination of damaged starch -- Amperometric method Status: Valid
Basic dataStandard ID: GB/T 31577-2015 (GB/T31577-2015)Description (Translated English): Inspection of grain and oils -- Determination of damaged starch -- Amperometric method Sector / Industry: National Standard (Recommended) Classification of Chinese Standard: X10 Classification of International Standard: 67.060 Word Count Estimation: 14,168 Date of Issue: 2015-05-15 Date of Implementation: 2015-11-23 Quoted Standard: GB 5491; GB/T 5497; GB/T 5511 Regulation (derived from): National Standard Announcement 2015 No. 15 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 use of the principle amperometric measuring wheat flour starch damage, instruments, apparatus, reagents, for sampling, process and operations, the results of the calculation, precision, and report the results. This Standard applies to the determination of wheat flour starch damage. GB/T 31577-2015: Inspection of grain and oils -- Determination of damaged starch -- Amperometric method---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order. Inspection of grain and oils - Determination of damaged starch - Amperometric method ICS 67.060 X10 National Standards of People's Republic of China Inspection of grain Wheat flour starch damage amperometric measuring method Issued on. 2015-05-15 2015-11-23 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released ForewordThis standard was drafted in accordance with GB/T 1.1-2009 given rules. The standard proposed by the National Food Authority. This standard by the National Grain and Oil Standardization Technical Committee (SAC/TC270) centralized. This standard was drafted. National Food Administration Institute of Science, the National Bureau of Standards, Quality Food Center. Drafters of this standard. Chen Yao, Sun Hui, Jiang Weili, Chang Liu, Cao Ying-jun. Inspection of grain Wheat flour starch damage amperometric measuring method1 ScopeThis standard specifies the use of the principle amperometric measuring wheat flour starch damage, instruments and equipment, reagents, for sampling, procedure, results count Operators, precision, and report the results. This standard applies to the determination of wheat flour damaged starch.2 Normative referencesThe following documents for the application of this document is essential. For dated references, only the dated version suitable for use herein Member. For undated references, the latest edition (including any amendments) applies to this document. GB 5491 grain and oilseeds testing for sampling, and sample method GB/T 5497 grain and oilseeds - Determination of water test GB/T 5511 Cereals and pulses - Determination of nitrogen content and calculation of crude protein content Kjeldahl method3 Terms and DefinitionsThe following terms and definitions apply to this document. 3.1 Damage starch damagedstarch Mechanical damage generated during milling damaged starch granules. Principle 4 Under certain conditions, the suspension of wheat flour starch damage more iodine absorption, the smaller current through suspension. By the electrochemical reaction Ying, produce the measured quality of wheat flour is proportional to the iodine, and the amount of iodine absorbed by the sample, determine the amount of damage to the starch sample.5 instruments and appliances5.1 Injury starch tester 1) (see Appendix A). The instrument should be calibrated periodically, it has the following technical parameters. 1) This standard is based on the French company's SDmatic CHOPIN based formulation. This information is provided for the convenience of the user of this standard to use, without It is recognized by the instrument. All meet the test requirements of the instrument can be used. --- Stirring rod speed. (1200 ± 5) r/min; --- Vibration motor speed. (8500 ± 2000) r/min; --- Heater resistance. diameter 8mm, power 60W; --- Measuring rod. diameter 6mm, 4 platinum electrodes; --- NTC (negative temperature coefficient) thermistor sensor. 10kΩ, 0 ℃ ~ 80 ℃, 35 ℃ temperature control accuracy of 1%. ......Tips & Frequently Asked Questions:Question 1: How long will the true-PDF of GB/T 31577-2015_English be delivered?Answer: Upon your order, we will start to translate GB/T 31577-2015_English as soon as possible, and keep you informed of the progress. The lead time is typically 1 ~ 3 working days. 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