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GB/T 22251-2024 English PDF

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Yes. Unless special scenarios such as technical constraints or academic study, you should always prioritize to purchase the latest version GB/T 22251-2024 even if the enforcement date is in future. Complying with the latest version means that, by default, it also complies with all the earlier versions, technically.

US$199.00 · In stock
Delivery: <= 3 days. True-PDF full-copy in English will be manually translated and delivered via email.
GB/T 22251-2024: Determination of puerarin in health foods
Status: Valid

GB/T 22251: Historical versions

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 22251-2024	199	Add to Cart	3 days	Determination of puerarin in health foods	Valid
GB/T 22251-2008	139	Add to Cart	3 days	Determination of puerarin in health foods	Valid

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Basic data

Standard ID: GB/T 22251-2024 (GB/T22251-2024)
Description (Translated English): Determination of puerarin in health foods
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: X83
Classification of International Standard: 67.050
Word Count Estimation: 10,181
Date of Issue: 2024-12-31
Date of Implementation: 2025-07-01
Older Standard (superseded by this standard): GB/T 22251-2008
Issuing agency(ies): State Administration for Market Regulation, China National Standardization Administration

GB/T 22251-2024: Determination of puerarin in health foods

---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.
ICS 67.050 CCSX83 National Standard of the People's Republic of China Replace GB/T 22251-2008 Determination of Puerarin in Health Food Released on 2024-12-31 2025-07-01 Implementation State Administration for Market Regulation The National Standardization Administration issued

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 for standardization documents" Drafting. This document specifies the technical requirements related to food quality. For food safety requirements, please refer to relevant laws, regulations, policies and food safety standards. document. This document replaces GB/T 22251-2008 "Determination of puerarin in health foods". Compared with GB/T 22251-2008, except for the structure In addition to adjustments and editorial changes, the main technical changes are as follows. a) The scope of application has been changed (see Chapter 1, Chapter 1 of the.2008 edition); b) The content of the principles has been changed (see Chapter 4, Chapter 2 of the.2008 edition); c) The requirements for reagents and materials have been changed (see Chapter 5, Chapter 3 of the.2008 edition); d) The requirements for equipment have been changed (see Chapter 6, Chapter 4 of the.2008 edition); e) Added the content of sample preparation (see 7.1), changed the sample processing method (see 7.2, 5.1 of the.2008 edition), changed the color Spectrum reference conditions (see 7.3.1, 5.3 of the.2008 edition); f) The detection limit and quantification limit of the method have been changed (see Chapter 10, Chapter 1 of the.2008 edition). Please note that some of the contents of this document may involve patents. The issuing organization of this document does not assume the responsibility for identifying patents. This document is proposed and coordinated by the National Technical Committee for Standardization of Special Foods (SAC/TC466). This document was drafted by. Nanjing Food and Drug Administration, China Light Industry Technology Innovation Center Co., Ltd., China Inspection and Quarantine (Beijing) Testing Technology Co., Ltd. Technology Co., Ltd., Jinpai Co., Ltd., Standex Pharmaceutical Technology (Qingdao) Co., Ltd., Infinitus (China) Co., Ltd., China Food Development Fermentation Industry Research Institute Co., Ltd., Hebei Food Inspection Institute, Tianjin University of Science and Technology. The main drafters of this document are. Sun Xiaojie, Zhong Qiding, Wu Zhuying, Wang Nan, Liu Ming, Li Qiang, Wang Wen, Zhang Cuiying, Huang Meishan, Shi Guohua, Yang Jun, Wang Yanan, Chen Nannan, Guo Xinguang, Wang Yumei, Liu Yang, Zhang Yan, Zhou Jingyu, Gao Guiqin, Yang Feng, Tian Shimin. The previous versions of this document and the documents it replaces are as follows. ---First published in.2008 as GB/T 22251-2008; ---This is the first revision. Determination of Puerarin in Health Food

1 Scope

This document describes a method for the determination of puerarin in health foods by HPLC. This document applies to puerarin in health foods in dosage forms such as soft capsules, hard capsules, tablets, powders, granules, oral liquids, and alcoholic preparations. Determination.

2 Normative references

The contents of the following documents constitute the essential clauses of this document through normative references in this document. For referenced documents without a date, only the version corresponding to that date applies to this document; for referenced documents without a date, the latest version (including all amendments) applies to This document. GB/T 6682 Specifications and test methods for water used in analytical laboratories

3 Terms and definitions

There are no terms or definitions that require definition in this document.

4 Principle

Puerarin in the sample was extracted with 50% methanol solution, purified by solid phase extraction column if necessary, separated by high performance liquid chromatography, and detected by ultraviolet light. The samples were detected by the external standard method, and the qualitative analysis was based on the retention time.

5 Reagents and Materials

Unless otherwise specified, only analytical grade reagents were used. 5.1 Reagents 5.1.1 Water. Grade 1 water as specified in GB/T 6682. 5.1.2 Methanol (CH4O). chromatographically pure. 5.1.3 Methanol (CH4O). 5.1.4 Acetonitrile (CH3CN). chromatographic grade. 5.1.5 Phosphoric acid (H3PO4). high purity. 5.1.6 Petroleum ether. boiling range 30℃~60℃. 5.2 Reagent preparation 5.2.1 0.1% (volume fraction) phosphoric acid solution. measure 1.0 mL of phosphoric acid (5.1.5), dilute to 1000 mL with water, and mix well. 5.2.2 50% (volume fraction) methanol solution. Take 50 mL of methanol (5.1.3), dilute to 100 mL with water, and mix well. ......

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Tips & Frequently Asked Questions:

Question 1: How long will the true-PDF of GB/T 22251-2024_English be delivered?

Answer: Upon your order, we will start to translate GB/T 22251-2024_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 22251-2024_English with my colleagues?

Answer: Yes. The purchased PDF of GB/T 22251-2024_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.

Question 5: Should I purchase the latest version GB/T 22251-2024?

Answer: Yes. Unless special scenarios such as technical constraints or academic study, you should always prioritize to purchase the latest version GB/T 22251-2024 even if the enforcement date is in future. Complying with the latest version means that, by default, it also complies with all the earlier versions, technically.