GB/T 15688-2024 English PDF (GB/T15688-2024)

GB/T 15688-2024: Animal and vegetable fats and oils - Determination of insoluble impurities content
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GB/T 15688-2024
GB
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 67.040
CCS X 04
GB/T 15688-2024 / ISO 663:2017
Replacing GB/T 15688-2008
Animal and vegetable fats and oils - Determination of
insoluble impurities content
(ISO 663:2017, IDT)
ISSUED ON: AUGUST 23, 2024
IMPLEMENTED ON: MARCH 01, 2025
Issued by: State Administration for Market Regulation;
Standardization Administration of the People’s Republic of China.
Table of Contents
Foreword ... 3
1 Scope ... 4
2 Normative references ... 4
3 Terms and definitions ... 4
4 Principle ... 5
5 Reagents ... 5
6 Apparatus ... 5
7 Sampling ... 6
8 Preparation of specimen ... 6
9 Operating procedure ... 6
9.1 Specimen ... 6
9.2 Determination ... 6
10 Expression of results ... 7
11 Precision ... 8
11.1 Interlaboratory tests ... 8
11.2 Repeatability ... 8
11.3 Reproducibility... 8
12 Test report ... 8
Annex A (informative) Interlaboratory test results ... 9
Bibliography ... 10
Foreword
This document was drafted in accordance with the provisions of GB/T 1.1-2020
“Directives for standardization - Part 1: Rules for the structure and drafting of
standardizing documents”.
This document replaces GB/T 15688-2008 “Animal and vegetable fats and oils -
Determination of insoluble impurities content”. Compared with GB/T 15688-2008, in
addition to structural adjustments and editorial changes, the main technical content
changes are as follows:
a) ADD the inapplicable scope (see Clause 1).
This document is identical to ISO 663:2017 “Animal and vegetable fats and oils -
Determination of insoluble impurities content”.
Attention is drawn to the possibility that some of the elements of this document may be
the subject of patent rights. The issuing authority of this document shall not be held
responsible for identifying any or all such patent rights.
This document was proposed by National Food and Strategic Reserves Administration.
This document shall be under the jurisdiction of National Technical Committee on
Grain and Oil of Standardization Administration of China (SAC/TC 270).
Drafting organizations of this document: Wuhan Institute of Standardization, Wuhan
Institute for Food and Cosmetic Control, Wuhan University of Light Industry, Yihai
Kerry Arawana Holdings Co., Ltd., Gansu Institute of Standardization.
Main drafters of this document: Huang Yong, Jiang Xiaoming, Huang Qing, Zhang
Sihong, Wang Geping, Yang Yi, Fang Weixing, Ren Wenjing, Yang Yong, Xiang
Xiaoxue, Xiao Ronghui.
The previous released versions replaced by this document are as follows:
- first published in 1995 as GB/T 15688-1995, first revised in 2008;
- this is the second revision.
Animal and vegetable fats and oils - Determination of
insoluble impurities content
1 Scope
This document describes the method for determination of insoluble impurities content
in animal and vegetable fats and oils.
This document applies to animal and vegetable fats and oils. If soaps (especially
calcium soaps) or oxidized fatty acids are not calculated as insoluble impurities,
different solvents and operating methods are used to make the determination of
insoluble impurities content meet the relevant requirements.
This document does not apply to milk and dairy products (referring to fats extracted
from milk and dairy products).
2 Normative references
The following referenced documents are indispensable for the application of this
document. For dated references, only the edition cited applies. For undated references,
the latest edition of the referenced document (including any amendments) applies.
ISO 661 Animal and vegetable fats and oils - Preparation of test sample
NOTE: GB/T 15687-2008 Animal and vegetable fats and oils - Preparation of test sample (ISO
661: 2003, IDT)
3 Terms and definitions
For the purpose of this document, the following terms and definitions apply.
3.1
insoluble impurities content
Quantity of substances and foreign impurities that are insoluble in n-hexane or light
petroleum under the conditions specified in this document.
NOTE 1: The content is expressed in mass fraction.
GB/T 15688-2024
GB
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 67.040
CCS X 04
GB/T 15688-2024 / ISO 663:2017
Replacing GB/T 15688-2008
Animal and vegetable fats and oils - Determination of
insoluble impurities content
(ISO 663:2017, IDT)
ISSUED ON: AUGUST 23, 2024
IMPLEMENTED ON: MARCH 01, 2025
Issued by: State Administration for Market Regulation;
Standardization Administration of the People’s Republic of China.
Table of Contents
Foreword ... 3
1 Scope ... 4
2 Normative references ... 4
3 Terms and definitions ... 4
4 Principle ... 5
5 Reagents ... 5
6 Apparatus ... 5
7 Sampling ... 6
8 Preparation of specimen ... 6
9 Operating procedure ... 6
9.1 Specimen ... 6
9.2 Determination ... 6
10 Expression of results ... 7
11 Precision ... 8
11.1 Interlaboratory tests ... 8
11.2 Repeatability ... 8
11.3 Reproducibility... 8
12 Test report ... 8
Annex A (informative) Interlaboratory test results ... 9
Bibliography ... 10
Foreword
This document was drafted in accordance with the provisions of GB/T 1.1-2020
“Directives for standardization - Part 1: Rules for the structure and drafting of
standardizing documents”.
This document replaces GB/T 15688-2008 “Animal and vegetable fats and oils -
Determination of insoluble impurities content”. Compared with GB/T 15688-2008, in
addition to structural adjustments and editorial changes, the main technical content
changes are as follows:
a) ADD the inapplicable scope (see Clause 1).
This document is identical to ISO 663:2017 “Animal and vegetable fats and oils -
Determination of insoluble impurities content”.
Attention is drawn to the possibility that some of the elements of this document may be
the subject of patent rights. The issuing authority of this document shall not be held
responsible for identifying any or all such patent rights.
This document was proposed by National Food and Strategic Reserves Administration.
This document shall be under the jurisdiction of National Technical Committee on
Grain and Oil of Standardization Administration of China (SAC/TC 270).
Drafting organizations of this document: Wuhan Institute of Standardization, Wuhan
Institute for Food and Cosmetic Control, Wuhan University of Light Industry, Yihai
Kerry Arawana Holdings Co., Ltd., Gansu Institute of Standardization.
Main drafters of this document: Huang Yong, Jiang Xiaoming, Huang Qing, Zhang
Sihong, Wang Geping, Yang Yi, Fang Weixing, Ren Wenjing, Yang Yong, Xiang
Xiaoxue, Xiao Ronghui.
The previous released versions replaced by this document are as follows:
- first published in 1995 as GB/T 15688-1995, first revised in 2008;
- this is the second revision.
Animal and vegetable fats and oils - Determination of
insoluble impurities content
1 Scope
This document describes the method for determination of insoluble impurities content
in animal and vegetable fats and oils.
This document applies to animal and vegetable fats and oils. If soaps (especially
calcium soaps) or oxidized fatty acids are not calculated as insoluble impurities,
different solvents and operating methods are used to make the determination of
insoluble impurities content meet the relevant requirements.
This document does not apply to milk and dairy products (referring to fats extracted
from milk and dairy products).
2 Normative references
The following referenced documents are indispensable for the application of this
document. For dated references, only the edition cited applies. For undated references,
the latest edition of the referenced document (including any amendments) applies.
ISO 661 Animal and vegetable fats and oils - Preparation of test sample
NOTE: GB/T 15687-2008 Animal and vegetable fats and oils - Preparation of test sample (ISO
661: 2003, IDT)
3 Terms and definitions
For the purpose of this document, the following terms and definitions apply.
3.1
insoluble impurities content
Quantity of substances and foreign impurities that are insoluble in n-hexane or light
petroleum under the conditions specified in this document.
NOTE 1: The content is expressed in mass fraction.