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
