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GB/T 45271-2025: Man-made fiber - Determination of catechins content - High performance liquid chromatography
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| GB/T 45271-2025 | English | 199 |
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Man-made fiber - Determination of catechins content - High performance liquid chromatography
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GB/T 45271-2025
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Basic data | Standard ID | GB/T 45271-2025 (GB/T45271-2025) | | Description (Translated English) | Man-made fiber - Determination of catechins content - High performance liquid chromatography | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | W50 | | Classification of International Standard | 59.060.20 | | Word Count Estimation | 10,198 | | Date of Issue | 2025-02-28 | | Date of Implementation | 2025-09-01 | | Issuing agency(ies) | State Administration for Market Regulation, China National Standardization Administration | GB/T 45271-2025: Man-made fiber - Determination of catechins content - High performance liquid chromatography
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GB/T 45271-2025 English version. Man-made fiber - Determination of catechins content - High performance liquid chromatography
ICS 59.060.20
CCS W50
National Standard of the People's Republic of China
Determination of catechin content in chemical fiber
High performance liquid chromatography
Released on 2025-02-28
2025-09-01 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.
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 on Standardization of Chemical Fibers (SAC/TC586).
This document was drafted by. China Textile Research Institute (Qingdao) Co., Ltd., Zhejiang Semir Garment Co., Ltd., 361° (China)
Co., Ltd., Taicang Qihua Knitwear Co., Ltd., Xiamen Jordan Technology Co., Ltd., Xiamen Xtep Children's Products Co., Ltd., China National Chemical Corporation
Fiber Industry Association, Biyue (Beijing) Technology Co., Ltd., Shanghai Textile Industry Technical Supervision Institute, Pepsi-Based Materials (Qingdao) Co., Ltd.
Company, Xinfengming Group Co., Ltd., Shandong Zhuobi Maternal and Infant Products Co., Ltd., Wuxi Jintong High Fiber Co., Ltd., Zhejiang Xierke
Technology Co., Ltd., Shanghai Textile Group Testing Standards Co., Ltd., Heye Health Technology Co., Ltd., Zhejiang Hengchuang Advanced Functional Fiber Innovation Center
Co., Ltd., Qianzhiya (Hubei) Hygiene Products Co., Ltd., Kaitai Special Fiber Technology Co., Ltd., Butong Internet of Things Technology (Shanghai) Co., Ltd.
Co., Ltd., Alaer Fiber Inspection Institute, Aiduo Nursing (Zhejiang) Co., Ltd., Ningbo Dafa New Materials Co., Ltd., Qingdao Baicao New Materials
Co., Ltd., Jiangsu Qinzun Textile Technology Co., Ltd.
The main drafters of this document are. Huang Xiaohua, Chi Shan, Hu Jun, Wei Shutao, Hua Xiaomei, Ruan Guoqing, Zhi Jun, Zhang Zixin, Chen Min, Li Hongjie, Zhang Yan,
Huang Yuping, Wang Xishan, Qian Qiyuan, Yang Chi, Chen Yan, Fang Yanwen, Lu Haimei, Ma Feiyue, Yuan Conghui, Fang Yu, Yuan Zhixia, Zhang Dong, Gu Jun, Liu Yanming,
Liu Cui, Liu Aonan.
Determination of catechin content in chemical fiber
High performance liquid chromatography
WARNING. Personnel using this document should have practical experience in formal laboratory work. This document does not address all possible safety issues.
The user is responsible for taking appropriate safety and health measures and ensuring compliance with the conditions stipulated by relevant national laws and regulations.
1 Scope
This document describes a test method for the determination of catechin content in catechin-modified fibers by high performance liquid chromatography.
This document is applicable to catechin-modified viscose, polyester, nylon and other chemical fibers.
2 Normative references
The contents of the following documents constitute 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 4146 (all parts) Textiles - Chemical Fibers
GB/T 6504-2017 Test method for oil content of chemical fibers
GB/T 6682 Specifications and test methods for water used in analytical laboratories
3 Terms and definitions
The terms and definitions defined in GB/T 4146 (all parts) apply to this document.
4 Principle
The catechins in the fiber were extracted with methanol and analyzed qualitatively and quantitatively by high performance liquid chromatography and external standard method.
5 Reagents or materials
Unless otherwise specified, only reagents confirmed to be chromatographically pure and first-grade water that complies with the requirements of GB/T 6682 were used in the analysis.
5.1 Catechins standard substances/standard samples, purity ≥ 98%. Catechins standard substances/standard samples include. catechin (C),
CAS No.. 154-23-4; epicatechin (EC), CAS No.. 490-46-0; epigallocatechin (EGC), CAS No.. 970-74-1; epicatechin
Epigallocatechin gallate (ECG), CAS number. 1257-08-5; Epigallocatechin gallate (EGCG), CAS number. 989-51-5.
5.2 Methanol, formic acid, ammonium formate, acetonitrile.
6 Instruments and Equipment
6.1 High performance liquid chromatograph equipped with a diode array detector.
6.2 Analytical balance, graduation value 0.1 mg.
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