GB/T 22223-2008 in English

《GB/T 22223-2008食品中总脂肪、饱和脂肪（酸）、不饱和脂肪（酸）的测定 水解提取-气相色谱法》由TC64（全国食品工业标准化技术委员会）归口，主管部门为国家标准化管理委员会。
本标准规定了用水解提取-气相色谱法测定食品中总脂肪、饱和脂肪（酸）和不饱和脂肪（酸）的条件和详细分析步骤。本标准适用于食品中总脂肪、饱和脂肪（酸）和不饱和脂肪（酸）的含量测定。 本标准参考采用国际分析化学家协会方法AOAC 996.06(2001年修订)《食品中总脂肪、饱和脂肪和不饱和脂肪测定法》[Total ,saturated,and unsa urated)in foods―Hydrolytic extraction gas chromatography method]。

1 Scope

This standard specifies conditions and detailed analysis procedures for the determination of total fat, saturated fat and unsaturated fat in foods by hydrolytic extraction-gas chromatography.
This standard is applicable to the determination of total fat, saturated fat and unsaturated fat in foods.
The detection limit of this standard is 0.1%.

2 Normative References

The following normative documents contain provisions which, through reference in this text, constitute provisions of this standard. For dated references, subsequent amendments to, or revisions of, any of these publications do not apply. However, parties to agreements based on this standard are encouraged to investigate the possibility of applying the most recent editions of the normative documents indicated below. For undated references, the latest edition of the normative document referred to applies.
GB/T 6682 Water for Laboratory Use — Specifications (GB/T 6682-1992, neq ISO 3696:1987)

3 Terms and Definitions

For the purpose of this standard, the following terms and definitions apply.
3.1
Total fat
Calculated by the sum of individual fatty acid triglyceride.
3.2
Saturated fat (acid)
Calculated by the sum of all fatty acids free of double bonds.
3.3
Monounsaturated fat (acid)
Calculated by the sum of all fatty acids contain one double bonds (include cis configuration only).
3.4
Polyunstaturated fat (acid)
Calculated by the sum of all fatty acids contain two or more double bonds (include cis configuration only).

4 Principle