GB/T 44214-2024 in English

VALID

Test method for non-protein content in silk

Issued on:2024-07-24
Implemented on:2025-02-01
File Format:PDF
Delivery:Via email within 1~3 business days

Price(USD)： $270.00
$262.00

Standard No:	GB/T 44214-2024
Document status:	VALID
Title in English:	Test method for non-protein content in silk
Title in Chinese:	蚕丝中非蚕丝蛋白物质含量试验方法
Language:	English
File Format:	Electronic (PDF)
Delivery:	Via email within 1~3 business days
Issued on:	2024-07-24
Implemented on:	2025-02-01
ICS Classification:	59.080.01-Textiles in general
Chinese Classification:	W40-Silk and silk fabric in general
Professional Classification:	GB-National Standard
Related Keywords:	item mulberry silk tussah silk test method sample mass test method non-protein content silk introduction explanation mulberry silk samples
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《GB/T 44214-2024蚕丝中非蚕丝蛋白物质含量试验方法》由TC401（全国丝绸标准化技术委员会）归口，主管部门为中国纺织工业联合会。

Introduction

Explanation of the test method

This standard is applicable to the calculation of the content of non-silk protein substances in silk by determining the content of four main amino acids (serine, glycine, alanine and tyrosine) in silk.

Item	Mulberry silk	Tussah silk	Test method
Sample mass	1g	1g	GB/T 9995
Hydrolysis time	24h	48h	110°C ± 2°C
Amino acid determination	HPLC method	HPLC method	Appendix A

Comparative analysis of standard frameworks

This standard is in line with the internationally accepted textile testing methods. The following are the main comparison dimensions:

Scope of application:Applicable only to silk and its products
Determination principle:Amino acid pre-column derivatization HPLC method
Precision requirement:Absolute difference of parallel samples ≤5% of the arithmetic mean

Explanation of professional terms

Non-silk protein substances refer to substances that are not decomposed into amino acids after silk is hydrolyzed, mainly including abnormally free NH₄⁺ and grafted polymers.