GB/T 19111-2026 Maize oil English, Anglais, Englisch, Inglés, えいご
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ICS 13.220.10
CCS H 57
National Standard of the People's Republic of China
GB/T 19111-2026
Replaces GB/T 19111-2017
Maize oil
玉米油
Issue date: 2026-01-28 Implementation date: 2027-02-01
Issued by the General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China
the Standardization Administration of the People's Republic of China
Contents
Foreword
1 Scope
2 Normative References
3 Terms and Definitions
4 Classification
5 Relative Density and Fatty Acid Composition
6 Quality Requirements
7 Test Methods
8 Inspection Rules
9 Labeling
10 Packaging, Storage, Transport, and Sale
Maize Oil
1 Scope
This document defines the terms and definitions for maize oil, and specifies its classification, relative density and fatty acid composition, quality requirements, inspection rules, labeling, packaging, storage, transport, and sale. It also describes the corresponding test methods.
This document applies to crude maize oil and finished products of maize oil. The quality specifications for crude maize oil apply only to the trade of crude maize oil.
2 Normative References
The following documents contain provisions which, through normative reference in this text, constitute essential provisions of this document. For dated references, only the edition cited applies. For undated references, the latest edition (including any amendments) applies.
GB/T 191 Packaging — Pictorial Marking for Handling and Storage of Goods
GB/T 5009.37 Method for Analysis of Hygienic Standard of Edible Vegetable Oil
GB 5009.168 National Food Safety Standard — Determination of Fatty Acids in Foods
GB 5009.229 National Food Safety Standard — Determination of Acid Value in Foods
GB 5009.236 National Food Safety Standard — Determination of Moisture and Volatile Matter in Animal and Vegetable Fats and Oils
GB/T 5524 Animal and Vegetable Fats and Oils — Sampling
GB/T 5525 Vegetable Oils — Method for Identification of Transparency, Odour and Taste
GB/T 5526 Animal and Vegetable Fats and Oils — Determination of Relative Density
GB/T 5531 Inspection of Grain and Oils — Heating Test of Vegetable Oils
GB/T 5533 Inspection of Grain and Oils — Determination of Soap Content in Vegetable Oils
GB/T 15688 Animal and Vegetable Fats and Oils — Determination of Insoluble Impurities Content
GB/T 17374 Sales Package of Edible Vegetable Oil
GB/T 20795 Vegetable Fats and Oils — Determination of Smoke Point
GB/T 25223 Animal and Vegetable Fats and Oils — Determination of Individual and Total Sterols Contents — Gas Chromatographic Method
GB/T 30354 Specification for Bulk Transportation of Edible Vegetable Oil
GB/T 35877 Inspection of Grain and Oils — Cold Test of Animal and Vegetable Fats and Oils
3 Terms and Definitions
For the purposes of this document, the following terms and definitions apply.
3.1
maize oil
Oil obtained from maize germ (including the maize germ, a small amount of maize bran, and maize endosperm).
NOTE: Also known as corn germ oil, corn oil.
3.2
crude maize oil
Oil obtained from maize germ that is not directly intended for human consumption.
NOTE: Also known as crude corn oil.
3.3
finished product of maize oil
Oil obtained by processing crude maize oil (3.2) and intended for human consumption.
3.3.1
pressing maize oil
Finished maize oil produced by refining crude maize oil (3.2) obtained by mechanically pressing maize germ.
3.3.2
solvent extraction maize oil
Finished maize oil produced by refining crude maize oil (3.2) obtained from maize germ or pressed cake using the property of solvents to dissolve oils.
3.4
sterol
4-desmethyl sterol, a hydroxyl-containing cyclopentanophenanthrene compound, occurring in living organisms in a free state or esterified with fatty acids.
4 Classification
4.1 Maize oil is classified into crude maize oil and finished products of maize oil based on the degree of processing.
4.2 Finished products of maize oil are classified into pressing maize oil and solvent extraction maize oil based on the processing technology.
5 Relative Density and Fatty Acid Composition
The relative density and fatty acid composition of maize oil are shown in Table 1. These compositions and parameters represent the basic characteristics of maize oil. When used for authenticity determination, they serve as reference only. The total sterol content and composition in crude maize oil are shown in Annex A.
6 Quality Requirements
6.1 Quality Specifications for Crude Maize Oil
The quality specifications for crude maize oil are shown in Table 2.
6.2 Quality Specifications for Finished Products of Maize Oil
The quality specifications for finished products of maize oil are shown in Table 3.
7 Test Methods
7.1 Determination of Relative Density: Perform according to GB/T 5526.
7.2 Determination of Fatty Acid Composition: Perform according to GB 5009.168.
7.3 Determination of Transparency, Odour, and Taste: Perform according to GB/T 5525.
7.4 Determination of Moisture and Volatile Matter Content: Perform according to GB 5009.236.
7.5 Determination of Insoluble Impurities Content: Perform according to GB/T 15688.
7.6 Determination of Acid Value: Perform according to GB 5009.229.
7.7 Determination of Colour: Perform according to GB/T 5009.37.
7.8 Heating Test: Perform according to GB/T 5531.
7.9 Determination of Soap Content: Perform according to GB/T 5533.
7.10 Cold Test: Perform according to GB/T 35877.
7.11 Determination of Smoke Point: Perform according to GB/T 20795.
7.12 Determination of Total Sterol Content and Composition: Perform according to GB/T 25223.
8 Inspection Rules
8.1 Sampling
Perform sampling according to the requirements of GB/T 5524.
8.2 Factory Inspection
8.2.1 Each batch shall be inspected, and an inspection report shall be issued.
8.2.2 Crude maize oil shall be inspected according to the items specified in Table 2. Finished products of maize oil shall be inspected according to the items specified in Table 3.
8.3 Type Test
8.3.1 A type test shall be conducted when there are significant changes in raw materials, equipment, or processes, or when requested by the regulatory authorities.
8.3.2 All items specified in Table 1, Table 2, and Table 3 shall be tested. If the test results do not conform to the provisions of Table 1, oil extracted from the maize germ used to produce that batch of product may be tested to provide supporting evidence.
8.4 Judgement Rules
8.4.1 If a finished product of maize oil does not indicate its quality grade on the label, it shall be judged as non-conforming to this document.
8.4.2 If a crude maize oil product, after inspection, has one or more items failing to meet the specifications in Table 2, it shall be judged as non-conforming to this document. If a finished product of maize oil, after inspection, has one or more items failing to meet the specifications in Table 3, it shall be judged as non-conforming to the corresponding grade.
9 Labeling
9.1 The product name shall be labeled according to the content of the terms and definitions.
9.2 The processing technology shall be indicated on the packaging or accompanying documents. For finished products of maize oil, the product quality grade shall also be indicated.
10 Packaging, Storage, Transport, and Sale
