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GB/T 40176-2021 English PDF

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US$189.00 · In stock
Delivery: <= 3 days. True-PDF full-copy in English will be manually translated and delivered via email.
GB/T 40176-2021: Determination of xylobiose in plant-derived products - Hydrophilic intention chromatography
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 40176-2021	189	Add to Cart	3 days	Determination of xylobiose in plant-derived products - Hydrophilic intention chromatography	Valid

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Basic data

Standard ID: GB/T 40176-2021 (GB/T40176-2021)
Description (Translated English): Determination of xylobiose in plant-derived products - Hydrophilic intention chromatography
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: A40
Word Count Estimation: 10,185
Issuing agency(ies): State Administration for Market Regulation, China National Standardization Administration

GB/T 40176-2021: Determination of xylobiose in plant-derived products - Hydrophilic intention 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.
Determination of xylobiose in plant-derived products-Hydrophilic intention chromatography ICS 07.080 CCSA40 National Standards of People's Republic of China Determination of Xylobiose in Plant-derived Products Hydrophilic Retention Chromatography Released on 2021-05-21 2021-12-01 implementation State Administration of Market Supervision and Administration Issued by the National Standardization Management Committee

Foreword

This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for Standardization Work Part 1.Structure and Drafting Rules of Standardization Documents" Drafting. Please note that some of the contents of this document may involve patents. The issuing agency of this document is not responsible for identifying patents. This document is under the jurisdiction of the National Standardization Technical Committee for Biochemical Testing (SAC/TC387). Drafting organizations of this document. Jiangnan University, Institute of Agricultural Products Processing, Chinese Academy of Agricultural Sciences, Beijing Technology and Business University, Beijing Sambo Technology Co., Ltd. Co., Ltd., Huapu Science Instrument (Beijing) Technology Co., Ltd., Lijin County Inspection and Testing Center. The main drafters of this document. Xu Chuanlai, Wang Feng, Ma Aijin, Gu Fengying, Hao Shuai, Li Bo, Zhu Jinjin, Xu Runqi, Ding Yanan, Liu Peiyu, Li Xiuting and Li Peng. Determination of Xylobiose in Plant-derived Products Hydrophilic Retention Chromatography

1 Scope

This document specifies the method for the determination of xylobiose in plant-derived products by HPLC. This document is applicable to the determination of xylobiose in plant-derived products.

2 Normative references

The contents of the following documents constitute the indispensable clauses of this document through normative references in the text. Among them, dated quotations Only the version corresponding to that date is applicable to this document; for undated reference documents, the latest version (including all amendments) is applicable to This document. GB/T 6682 Analytical laboratory water specifications and test methods

3 Terms and definitions

There are no terms and definitions that need to be defined in this document.

4 Principle

The sample is extracted with water to remove impurities such as fat, protein, starch, non-starch sugar, and the reducing end of xylobiose is combined with 1-phenyl-3-methyl-5-pyrazole The derivatization reaction of PMP occurs to produce a stable product with strong ultraviolet absorption, which is detected by high-performance liquid hydrophilic retention chromatography. Measured and quantified by external standard method.

5 Reagents and materials

Unless otherwise specified, the reagents used in this method are all analytically pure, and the water is the first grade water specified in GB/T 6682. 5.1 Reagents 5.1.1 Acetonitrile (CH3CN). chromatographically pure. 5.1.2 Anhydrous ethanol (CH3CH2OH). 5.1.3 Acetone (CH3COCH3). 5.1.4 Methanol (CH3OH). 5.1.5 1-Phenyl-3-methyl-5-pyrazolone (PMP) (C10H10N2O). 5.1.6 Trichloromethane (CHCl3). 5.1.7 Hydrochloric acid (HCl). 5.1.8 Sodium hydroxide (NaOH). 5.1.9 Phosphoric acid (H3PO4). chromatographically pure. 5.1.10 Xylobiose (C10H18O9, CAS number. 6860-47-5). Purity ≥99.0%. ......

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Tips & Frequently Asked Questions:

Question 1: How long will the true-PDF of GB/T 40176-2021_English be delivered?

Answer: Upon your order, we will start to translate GB/T 40176-2021_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 40176-2021_English with my colleagues?

Answer: Yes. The purchased PDF of GB/T 40176-2021_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+ countries

Question 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 Sales@ChineseStandard.net. 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.