GB/T 9695.7-2008Meat and meat products -- Determination of total fat content (English PDF)

Foreword

GB/T 9695 is composed of the following parts.

— GB/T 9695.1 Meat and meat products – Determination of free fat content

— GB/T 9695.2 Meat and meat products – Determination of fatty acids

— GB/T 9695.3 Meat and meat products – Determination of iron content

— GB/T 9695.4 Meat and meat products – Determination of total

phosphorus

— GB/T 9695.5 Meat and meat products – Measurement of pH

— GB/T 9695.6 Meat products – Determination of artificial colour ponceau

4R

— GB/T 9695.7 Meat and meat products – Determination of total fat content

— GB/T 9695.8 Meat and meat products – Determination of chloride content

— GB/T 9695.9 Meat and meat products – Determination of polyphosphates

— GB/T 9695.10 Meat and meat products – Determination of BHC and DDT

— GB/T 9695.11 Meat and meat products – Determination of nitrogen

content

— GB/T 9695.13 Meat and meat products – Method for determination of

calcium content

— GB/T 9695.14 Meat products – Determination of starch content

— GB/T 9695.15 Meat and meat products – Determination of moisture

content

— GB/T 9695.17 Meat and meat products – Determination of glucono-delta-

lactone content

— GB/T 9695.18 Meat and meat products – Determination of total ash

— GB/T 9695.19 Meat and meat products – Sampling

— GB/T 9695.20 Meat and meat products – Method for determination of

Zinc

— GB/T 9695.21 Meat and meat products – Determination of magnesium

— GB/T 9695.22 Meat and meat products – Determination of copper content

— GB/T 9695.23 Meat and meat products – Determination of hydroxyproline

content

— GB/T 9695.24 Meat and meat products – Determination of cholesterol

— GB/T 9695.25 Meat and meat products – Determination of vitamin PP

content

— GB/T 9695.26 Meat and meat products – Determination of vitamin A

content

— GB/T 9695.27 Meat and meat products – Determination of vitamin B1

content

— GB/T 9695.28 Meat and meat products – Determination of vitamin B2

content

— GB/T 9695.29 Meat products – Determination of vitamin C content

— GB/T 9695.30 Meat and meat products – Determination of vitamin E

content

— GB/T 9695.31 Meat products – Determination of total sugars content

This Part is the 7th part of GB/T 9695.

This Part replaces GB/T 9695.7-1988 Meat and meat products – Determination

of total fat content.

Compared with GB/T 9695.7-1988, this Part has the following major changes.

— Carry out structural adjustment and text changes according to GB/T 1.1-

2000 Directives for standardization – Part 1. Rules for the structure and

drafting of standards and GB/T 20001.4-2001 Rules for drafting

standards – Part 4. Methods of chemical analysis;

— Add normative references;

— Change the expression of principles, so as to make the expression more

accurate;

— Add two chapters, which are "Terms and definitions" and "Test report";

Meat and meat products –

Determination of total fat content

1 Scope

This Part of GB/T 9695 specifies the methods for the determination of total fat

content in meat and meat products.

This Part applies to the determination of total fat content in meat and meat

products.

2 Normative references

The provisions in the following documents become the provisions of this Part

through reference in this Part of GB/T 9695. For dated references, the

subsequent amendments (excluding corrections) or revisions do not apply to

this Part. However, parties who reach an agreement based on this Part are

encouraged to study if the latest versions of these documents are applicable.

For undated references, the latest versions apply to this Part.

GB/T 6682-1992 Water for analytical laboratory use – Specification and test

methods (neq ISO 3696. 1987)

3 Terms and definitions

The following terms and definitions apply to this Part of GB/T 9695.

4 Principle

HEAT the samples in hydrochloric acid for hydrolysis, so as to release the

contained and combined grease. FILTER, and then DRY the substances left on

the filter. USE n-hexane or petroleum ether to extract and to remove the solvent,

and thus to obtain total fat content.

5 Reagents and materials

Unless otherwise specified, all the reagents used shall be of analytical reagent.

6 Instruments and equipment

The conventional laboratory instruments and the following apparatuses include.

11 Precision

The same analyst shall use the same method and equipment to carry out two

independent determinations to the same sample, within a short time interval, in

the same laboratory. The absolute difference of these two determination results

shall not be greater than 0.5%.

12 Test report

The test report shall explain that.

— All the necessary information related to the sample identification;

— Sampling methods;

— Methods adopted according to this Part;

— All the operations that have not been specified in this Part or listed as

options, and other factors that may affect the test results;

— Test results;

— LIST out final results once verifying the repeatability.

References

[1] GB/T 9695.19 Meat and meat products – Sampling

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