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GB/T 24304-2024: Animal and vegetable fats and oils - Determination of anisidine value
Status: Valid GB/T 24304: Evolution and historical versions
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| GB/T 24304-2024 | English | 234 |
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Animal and vegetable fats and oils - Determination of anisidine value
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GB/T 24304-2024
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| GB/T 24304-2009 | English | 130 |
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Animal and vegetable fats and oils -- Determination of anisidine value
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Basic data | Standard ID | GB/T 24304-2024 (GB/T24304-2024) | | Description (Translated English) | Animal and vegetable fats and oils - Determination of anisidine value | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | X14 | | Word Count Estimation | 12,175 | | Date of Issue | 2024-08-23 | | Date of Implementation | 2024-08-23 | | Issuing agency(ies) | State Administration for Market Regulation, China National Standardization Administration | GB/T 24304-2024: Animal and vegetable fats and oils - Determination of anisidine value---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.
Animal and vegetable fats and oils - Determination of anisidine value
Determination of anisidine value in animal and vegetable fats and oils
(ISO 6885.2016, IDT)
ICS 67.200.10
CCS X 14
National Standard of the People's Republic of China
Replace GB/T 24304-2009
Released on 2024-08-23
2025-03-01 Implementation
State Administration for Market Regulation
The National Standardization Administration issued
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 is required.
This document replaces GB/T 24304-2009 "Determination of anisidine value in animal and vegetable fats and oils". Compared with GB/T 24304-2009,
In addition to structural adjustments and editorial changes, the main technical changes are as follows.
The scope of application has been changed (see Chapter 1, Chapter 1 of the.2009 edition); -
The description of the color of p-anisidine and the purification requirements of p-anisidine reagent have been changed (see 5.3, 5.3 of the.2009 edition); -
The total oxidation number calculation formula has been changed (see 10.2, 10.2 of the.2009 edition). -
This document is equivalent to ISO 6885.2016 "Animal and vegetable fats and oils - Determination of anisidine value".
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 Standardization of Cereals and Oils (SAC/TC 270).
This document was drafted by. China Grain and Oils Corporation Chengdu Storage Research Institute Co., Ltd., China Grain and Oils Corporation Quality Inspection Center Co., Ltd., China Grain and Oils Corporation Zhenjiang Quality Inspection Center
HEART LIMITED.
The main drafters of this document are. Jiang Tao, Liao Zilong, Lan Xueping, Shan Xiaoxue, Chen Chao, and Zhang Liuping.
The previous versions of this document and the documents it replaces are as follows.
First published in.2009 as GB/T 24304-2009;
This is the first revision. -
Determination of anisidine value in animal and vegetable fats and oils
1 Scope
This document describes the method for the determination of the anisidine value of animal and vegetable fats and oils.
This document is applicable to the determination of aldehydes (mainly α, β-unsaturated aldehydes) in animal and vegetable oils and fats.
This document does not apply to milk fat and milk fat products.
2 Normative references
The contents of the following documents constitute the 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.
in this document.
ISO 661 Animal and vegetable fats and oils-Preparation of test samples
sample）
Note. GB/T 15687-2008 Preparation of animal and vegetable fat samples (ISO 661..2003, IDT)
ISO 3696 Water for analytical laboratory use - Specification and test methods
and test methods)
Note. GB/T 6682-2008 Specifications and test methods for water used in analytical laboratories (ISO 3696.1987, MOD)
3 Terms and definitions
The following terms and definitions apply to this document.
3.1
anisidine value
Under the specified test conditions, p-anisidine reacts with the sample and the increase in absorbance measured at 350 nm using a 10 mm cuvette is
Value, the value after expanding 100 times.
Note. Anisidine value has no unit, but the value measured by dissolving 1 g of sample in 100 mL of the mixture of solvent and reaction reagent is 1 unit.
4 Principle
The sample was dissolved in isooctane (2,2,4-trimethylpentane) and reacted with an acetic acid solution of p-anisidine. The increase in
The absorbance of the added sample was used to calculate the anisidine value.
5 Reagents
Unless otherwise specified, all reagents used in this document are of analytical grade. Water should meet the requirements of Grade 3 water in ISO 3696.
5.1 Anhydrous sodium sulfate (Na2SO4).
5.2 Isooctane (2,2,4-trimethylpentane). In the wavelength range of 300 nm to 380 nm, the absorbance measured with water as reference shall not exceed
0.01.
5.3 p-anisidine (4-anisole). anhydrous, milky white crystals.
WARNING. p-Anisidine is toxic, avoid contact with skin.
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