US$229.00 · In stock Delivery: <= 3 days. True-PDF full-copy in English will be manually translated and delivered via email. GB/T 26625-2011: Inspection of grain and oils -- Determination of soybean isoflavone -- High performance liquid chromatography Status: Valid
Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
GB/T 26625-2011 | English | 229 |
Add to Cart
|
3 days [Need to translate]
|
Inspection of grain and oils -- Determination of soybean isoflavone -- High performance liquid chromatography
| Valid |
GB/T 26625-2011
|
PDF similar to GB/T 26625-2011
Basic data Standard ID | GB/T 26625-2011 (GB/T26625-2011) | Description (Translated English) | Inspection of grain and oils -- Determination of soybean isoflavone -- High performance liquid chromatography | Sector / Industry | National Standard (Recommended) | Classification of Chinese Standard | B20 | Classification of International Standard | 67.060 | Word Count Estimation | 10,136 | Date of Issue | 2011-06-16 | Date of Implementation | 2011-11-01 | Quoted Standard | GB/T 6682 | Regulation (derived from) | Announcement of Newly Approved National Standards No. 9 of 2011 | 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 HPLC soy isoflavones (daidzein, glycitein, genistin, daidzein, glycitein aglycone, genistein) content in principle, reagents and materials, instruments and equipment, reagents preparation and preservation, the steps, the results calculated with said precision requirements. This standard applies to soybeans, soy milk, tempeh soy isoflavone content. This standard test method detection limit of 2. 5mg/kg. |
GB/T 26625-2011: Inspection of grain and oils -- Determination of soybean isoflavone -- High performance liquid chromatography ---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 soybean isoflavone. High performance liquid chromatography
ICS 67.060
B20
National Standards of People's Republic of China
Inspection of grain and soy isoflavone content measured
High Performance Liquid Chromatography
Issued on. 2011-06-16
2011-11-01 implementation
Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China
Standardization Administration of China released
Foreword
The Standard Appendix A, Appendix B is an informative annex.
The standard proposed by the National Food Authority.
This standard by the National Standardization Technical Committee OILS.
This standard was drafted. Heilongjiang People's Republic of China Exit Inspection and Quarantine, ninety-Grain and Oil Industry Group Co., Ltd.
The main drafters of this standard. Gao Yong, Yang Chang-chih, Li Tiezhu, Zhang Hongxiang, Dengli Yu, Wang Yue, Ding Lisha.
Inspection of grain and soy isoflavone content measured
High Performance Liquid Chromatography
1 Scope
This standard specifies the determination of soy isoflavones (daidzein, glycitein, genistein, daidzein, glycitein HPLC
Aglycone, genistein principle) content, reagents and materials, instruments and equipment, reagent preparation and preservation, the steps, the results of calculation and said fine
Density requirements.
This standard applies to soybeans, soy milk, tempeh determination of soybean isoflavone content.
The detection limit of the standard test method was 2.5mg/kg.
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.
Laboratory use specifications and test methods GB/T 6682 Analysis
Principle 3
Samples with methanol - aqueous ultrasonic oscillation extraction, the extract by centrifugation, concentration, volume, filtered, measured by high performance liquid chromatography, outside
Standard method.
4 Reagents and materials
Unless otherwise indicated, the reagents used were of analytical grade, water should meet GB/T 6682 stipulated a water.
4.1 acetonitrile. chromatography.
4.2 methanol.
4.3 acetic acid.
4.4 90% methanol solution. Take 900mL methanol, 100mL of water, and mix.
4.5 60% methanol solution. Take 600mL methanol, 400mL of water, and mix.
4.6 10% methanol solution. Take 100mL methanol, 900mL of water, and mix.
4.7 0.1% acetic acid solution. Take 1mL acetic acid, into 1000mL volumetric flask with water to volume.
4.8 0.1% acetic acid in acetonitrile. Take 1mL acetic acid, into 1000mL volumetric flask, and dissolved in acetonitrile to volume.
4.9 Soybean glycosides (daidzin). purity not less than 98%.
4.10 genistein (genistin). purity not less than 99%.
4.11 daidzein (daidzein). purity not less than 98%.
4.12 genistein (genistein). purity not less than 98%.
4.13 glycitein (glycitin). purity not less than 98%.
4.14 glycitein aglycone (glycitein). purity not less than 98%.
4.15 Standard stock solution preparation.
4.15.1 soy isoflavones standard stock solution. namely, accurately weighed amount of daidzein, genistein, daidzein, genistein, soybeans
Flavin, glycitein aglycone standards, respectively with 60% methanol (4.5) formulated at a concentration of 1mg/mL standard stock solution. -18 ℃ to avoid
Tips & Frequently Asked Questions:Question 1: How long will the true-PDF of GB/T 26625-2011_English be delivered?Answer: Upon your order, we will start to translate GB/T 26625-2011_English as soon as possible, and keep you informed of the progress. The lead time is typically 1 ~ 3 working days. The lengthier the document the longer the lead time. Question 2: Can I share the purchased PDF of GB/T 26625-2011_English with my colleagues?Answer: Yes. The purchased PDF of GB/T 26625-2011_English will be deemed to be sold to your employer/organization who actually pays for it, including your colleagues and your employer's intranet. Question 3: Does the price include tax/VAT?Answer: Yes. Our tax invoice, downloaded/delivered in 9 seconds, includes all tax/VAT and complies with 100+ countries' tax regulations (tax exempted in 100+ countries) -- See Avoidance of Double Taxation Agreements (DTAs): List of DTAs signed between Singapore and 100+ countriesQuestion 4: Do you accept my currency other than USD?Answer: Yes. If you need your currency to be printed on the invoice, please write an email to [email protected]. In 2 working-hours, we will create a special link for you to pay in any currencies. Otherwise, follow the normal steps: Add to Cart -- Checkout -- Select your currency to pay.
|