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GB/T 44614-2024: Inspection of grains and oils - Determination of the triacylglycerols composition in vegetable oils - High performance liquid chromatography
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| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 44614-2024 | English | 359 |
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Inspection of grains and oils - Determination of the triacylglycerols composition in vegetable oils - High performance liquid chromatography
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GB/T 44614-2024
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Basic data
| Standard ID | GB/T 44614-2024 (GB/T44614-2024) |
| Description (Translated English) | Inspection of grains and oils - Determination of the triacylglycerols composition in vegetable oils - High performance liquid chromatography |
| Sector / Industry | National Standard (Recommended) |
| Classification of Chinese Standard | X14 |
| Classification of International Standard | 67.200.10 |
| Word Count Estimation | 18,129 |
| Date of Issue | 2024-09-29 |
| Date of Implementation | 2025-04-01 |
| Issuing agency(ies) | State Administration for Market Regulation, China National Standardization Administration |
GB/T 44614-2024: Inspection of grains and oils - Determination of the triacylglycerols composition in vegetable oils - High performance liquid chromatography
---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
ICS 67.200.10
CCSX14
National Standard of the People's Republic of China
Grain and oil inspection-Determination of triglyceride composition in vegetable oils
High performance liquid chromatography
Released on 2024-09-29
2025-04-01 Implementation
State Administration for Market Regulation
The National Standardization Administration issued
Table of Contents
Preface III
1 Scope 1
2 Normative references 1
3 Terms and Definitions 1
4 Principle 1
5 The first method. high performance liquid chromatography---differential refractive index detector detection method 2
5.1 Reagents and Materials 2
5.2 Instruments and equipment 2
5.3 Sample preparation 2
5.4 Operation Step 2
5.5 Result Presentation 3
5.6 Precision 3
6 Second method. High performance liquid chromatography---UV detector detection method 4
6.1 Reagents and Materials 4
6.2 Instruments and equipment 4
6.3 Sample preparation 4
6.4 Operation Step 4
6.5 Result Presentation 5
7 The third method. high performance liquid chromatography-evaporative light scattering detector detection method 5
7.1 Principle 5
7.2 Reagents and Materials 5
7.3 Instruments and equipment 5
7.4 Sample preparation 5
7.5 Operation Step 5
7.6 Result Presentation 6
Appendix A (Informative) Chromatogram of soybean oil triglycerides 7
A.1 High performance liquid chromatography-differential refractive index detector detection method 7
A.2 High performance liquid chromatography-ultraviolet detector detection method 7
A.3 High performance liquid chromatography-evaporative light scattering detector detection method 8
Appendix B (informative) Relationship between logα and the number of double bonds n 9
Appendix C (Informative) Statistical results of inter-laboratory testing for determination of triglyceride composition in vegetable oils 10
Reference 12
Foreword
This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for standardization work Part 1.Structure and drafting rules for standardization documents"
Drafting.
Please note that some of the contents of this document may involve patents. The issuing organization of this document does not assume the responsibility for identifying patents.
This document was proposed by the State Administration of Grain and Material Reserves.
This document is under the jurisdiction of the National Technical Committee on Cereals and Oils Standardization (SAC/TC270).
This document was drafted by. National Grain and Material Reserves Administration Scientific Research Institute, Jiangnan University, Shandong Longda Grain and Oil Co., Ltd., Henan Industry
University, Qingdao Pony Testing Co., Ltd., COFCO Engineering (Xi'an) International Engineering Co., Ltd., and Shanghai Liangyou (Group) Co., Ltd. Technology Center.
The main drafters of this document are. Duan Zhangqun, Xue Yalin, Guo Mimi, Wang Xingguo, Qiu Dongchao, Bi Yanlan, Chen Tong, Ren Chunming, Huang Xinmin, Wei Wei,
Jin Qingzhe, Yang Qizhou, and Zhu Yingdan.
Grain and oil inspection-Determination of triglyceride composition in vegetable oils
High performance liquid chromatography
1 Scope
This document describes the principles, reagents and materials, apparatus and equipment, and test methods for the determination of triglyceride composition in vegetable oils by high performance liquid chromatography.
Sample preparation, operating procedures, result expression and precision.
This document is applicable to the determination of triglyceride composition in vegetable oils and fats containing long-chain fatty acid triglycerides, especially for those containing a small amount of semi-
Determination of triglyceride composition in drying oils (rich in linoleic acid) and vegetable oils with oleic acid as the main unsaturated fatty acid.
The third method is suitable for the determination of triglyceride content in vegetable oils with commercial standards.
2 Normative references
The contents of the following documents constitute essential clauses of this document through normative references in this document.
For referenced documents without a date, only the version corresponding to that date applies to this document; for referenced documents without a date, the latest version (including all amendments) applies to
This document.
GB/T 15687 Preparation of animal and vegetable fat samples
3 Terms and definitions
The following terms and definitions apply to this document.
3.1
The triglyceride components from ECN38 to ECN52 measured under the conditions specified in this document.
Note. The component content is calculated by peak area normalization method and expressed as mass fraction.
4 Principle
According to the relationship between the relative molecular mass and unsaturation of triglycerides and the equivalent carbon number (ECN), high performance liquid chromatography was used to separate
And quantitative determination of triglyceride composition in vegetable oils.
The peak order of triglycerides can be determined by calculating the equivalent carbon number (ECN). The equivalent carbon number can be calculated by formula (1).
ECN=CN-2n (1)
Where.
CN---number of carbon atoms;
n ---number of double bonds.
The equivalent carbon number of triglycerides containing oleic acid, linoleic acid and linolenic acid can be calculated by formula (2).
ECN=CN-dOnO-dLinLi-dLenLe (2)
Where.
CN --- number of carbon atoms;
nO --- the number of double bonds in oleic acid;
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