GB/T 5009.6-2003 in English

《GB/T 5009.6-2003食品中脂肪的测定》由361（国家卫生健康委员会）归口，主管部门为国家卫生健康委员会。
本标准规定了食品中脂肪含量的测定方法。本标准适用于肉制品、豆制品、谷物、坚果、油炸果品、中西式糕点等粗脂肪含量的测定，不适用于乳及乳制品。

1 Scope

This standard specifies the method for determination of fat in food.
This standard is applicable to the determination of crude fat content in meat products, bean products, grains, nuts, fried fruits and Chinese and Western cakes, but is not applicable to milk or dairy products.

First Method Soxhlet Extraction

2 Principle

After the sample is extracted by diethyl ether dried or petroleum ether and the solvent is evaporated, and the substance left is fat. Beside fat, it also contains pigment, volatile oil, wax, resin, etc. The fat determined by extraction method is free fat.

3 Reagents

3.1 Diethyl ether dried or petroleum ether.
3.2 Sea sand: boil sea sand or river sand (clean the mud by water) with hydrochloric acid (1+1) for 0.5h, and then clean it to neutral by water; then boil it with caustic soda solution (240g /L) for 0.5h, and then clean it to neutral; dry it at 100℃±5℃ for standby.

4 Instruments

Soxhlet abstractor.

Contents
Foreword I
1 Scope
2 Principle
3 Reagents
4 Instruments
5 Analytical Procedures
6 Result Calculation
7 Precision
8 Principle
9 Reagents
10 Instruments
11 Analytical Procedures
12 Calculation
13 Precision