GB/T 42491-2023 in English

《GB/T 42491-2023饲料中淀粉总含量的测定 酶法》由TC76（全国饲料工业标准化技术委员会）归口，主管部门为国家标准委。

Introduction

GB/T 42491-2023 Determination of Total Starch Content in Feed - Enzyme Method is a national standard of the People's Republic of China for the accurate measurement of starch content in animal feed. This standard specifies the enzyme method for determining the total starch content in feed, which is widely used in the feed industry for quality control and nutritional assessment.

The enzyme method described in this standard involves the use of enzymes to hydrolyze starch into glucose, followed by the measurement of glucose concentration using appropriate analytical techniques. This method provides a reliable and precise measurement of starch content in feed samples, ensuring the accuracy of feed formulation and nutritional labeling.

The standard provides detailed procedures for sample preparation, enzyme hydrolysis, glucose determination, and calculation of starch content. It also includes requirements for the performance of the enzymes and analytical instruments used in the analysis. By following the procedures and requirements outlined in this standard, feed manufacturers and laboratories can obtain consistent and comparable results for the determination of starch content in feed.

In conclusion, GB/T 42491-2023 is an important standard for the determination of total starch content in animal feed in China. Its adoption and implementation ensure the accurate assessment of feed quality and nutritional value, contributing to the overall improvement of animal nutrition and health.