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GB/T 40644-2021 English PDF

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US$119.00 · In stock
Delivery: <= 3 days. True-PDF full-copy in English will be manually translated and delivered via email.
GB/T 40644-2021: Determination of geniposidic acid in extract of eucommia ulmoides oliver leaf - HPLC
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 40644-2021	119	Add to Cart	3 days	Determination of geniposidic acid in extract of eucommia ulmoides oliver leaf - HPLC	Valid

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Basic data

Standard ID: GB/T 40644-2021 (GB/T40644-2021)
Description (Translated English): Determination of geniposidic acid in extract of eucommia ulmoides oliver leaf - HPLC
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: B04
Word Count Estimation: 6,641
Issuing agency(ies): State Administration for Market Regulation, China National Standardization Administration

GB/T 40644-2021: Determination of geniposidic acid in extract of eucommia ulmoides oliver leaf - HPLC

---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 geniposidic acid in extract of eucommia ulmoides oliver leaf - HPLC ICS 65.020.01 CCSB04 National Standards of People's Republic of China Detection of geniposide acid in the extract of Eucommia ulmoides leaves High performance liquid chromatography HPLC Released on 2021-10-11 2022-05-01 implementation State Administration for Market Regulation 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 was proposed by the State Forestry and Grassland Administration. This document is under the jurisdiction of the National Forest Chemical Products Standardization Technical Committee (SAC/TC558). Drafting organizations of this document. Beijing Forestry University, China National Institute of Standardization, Zhejiang Shengshi Biotechnology Co., Ltd., Hebei Guanzhuo Testing Division Technology Co., Ltd., Shenzhen Brand Building Promotion Center, Zhongshan Hongli Health Food Industry Research Institute, Chinese Academy of Forestry Institute of Chemical Industry, Nanjing Forestry University, Infinitus (China) Co., Ltd. The main drafters of this document. Lei Jiandu, Xi Xingjun, Liu Jing, Wang Luying, Chen Yongjian, Zhang Jingxuan, Shen Xiaoyu, Yang Zhihua, Zheng Ping, Wang Chengzhang, Huang Chaobo, Lan Tao, Li Wenjun, Yang Zhongzhi, Sun Hongmei. Detection of geniposide acid in the extract of Eucommia ulmoides leaves High performance liquid chromatography

1 Scope

This document describes the principle, reagents and materials, instruments and equipment for the determination of geniposide acid content in Eucommia ulmoides leaf extract by high performance liquid chromatography. Preparation, determination steps, calculation and presentation of results, repeatability, precision, and recovery of standard addition. This document is applicable to the determination of geniposide acid content in Eucommia ulmoides leaf extract.

2 Normative references

The content of the following documents constitutes an indispensable clause of this document through normative references in the text. Among them, dated quotations Only the version corresponding to the 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

In the same analysis cycle, adjust the mobile phase ratio according to a certain time program to make the key components in the Eucommia leaf extract according to their respective appropriate The capacity factor achieves a good separation purpose. The external standard method corresponding to geniposide acid was used for direct quantification, and the chromatographic column used was a reversed-phase C18 column. Note. Geniposide acid, also known as geniposide acid, geniposide acid or geniposide acid, is an iridoid glucoside. The ultraviolet spectrometry of geniposide acid shows that its maximum ultraviolet absorption wavelength is 240nm, so 240nm is determined as geniposide acid HPLC detection wavelength.

5 Reagents and materials

Unless otherwise stated, only use reagents confirmed to be analytically pure and water that meets GB/T 6682 level 1 in the analysis. 5.1 Reagents 5.1.1 Methanol (CH3OH), chromatographically pure. 5.1.2 Phosphoric acid (H3PO4), the content is 85%. 5.2 Standard products Geniposide standard product. purity ≥98%. 5.3 Geniposide acid standard stock solution Weigh.200mg (accurate to 0.001g) of geniposide acid standard, put it in a 100mL volumetric flask, dissolve it with methanol and make it to volume ......

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Tips & Frequently Asked Questions:

Question 1: How long will the true-PDF of GB/T 40644-2021_English be delivered?

Answer: Upon your order, we will start to translate GB/T 40644-2021_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 40644-2021_English with my colleagues?

Answer: Yes. The purchased PDF of GB/T 40644-2021_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.