GB 1351-2023 (GB1351-2023) & related versions
GB 1351-2023: PDF in English
GB 1351-2008
GB
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 67.060
B 22
Replacing GB 1351-1999
Wheat
小麦
ISSUED ON: JANUARY 1, 2008
IMPLEMENTED ON: MAY 1, 2008
Issued by: General Administration of Quality Supervision, Inspection and
Quarantine of the PRC;
Standardization Administration of the PRC.
Table of Contents
Foreword ... 3
1 Scope ... 5
2 Normative references ... 5
3 Terms and definitions ... 6
4 Classification ... 8
5 Quality requirements and hygiene requirements ... 9
6 Inspection methods ... 9
7 Inspection rules ... 10
8 Label identification ... 10
9 Packaging, storage, and transportation ... 10
Wheat
1 Scope
This Standard specifies the relevant terms and definitions, classification, quality
requirements, hygiene requirements, inspection methods, inspection rules, label
identification of wheat, as well as packaging, storage, and transportation requirements.
This Standard applies to the acquisition, storage, transportation, processing, and sale of
commodity wheat.
This Standard does not apply to special varieties of wheat outside of the classification
provisions of this Standard.
2 Normative references
The following documents contain the provisions which, through reference in this
Standard, constitute the provisions of this Standard. For the dated references, their
subsequent amendments (excluding corrections) or revisions do not apply to this
Standard. However, the parties who enter into agreement based on this Standard are
encouraged to investigate whether the latest editions of these documents are applicable.
For undated reference documents, the latest editions apply to this Standard.
GB 2715 Hygienic standard for grains
GB/T 5490 Inspection of grain and oils - General rules
GB 5491 Inspection of grain and oilseeds - Methods for sampling and sample
reduction
GB/T 5492 Inspection of grain and oils - Identification of colour, odour and taste of
grain and oilseeds
GB/T 5493 Inspection of grain and oils - Determination of type purity and their
mixture
GB/T 5494 Inspection of grain and oils - Determination of foreign matter and
unsound kernels of grain and oilseeds
GB/T 5497 Inspection of grain and oilseeds - Methods for determination of moisture
content
GB/T 5498 Inspection of grain and oils - Determination of test weight
3.2.3
Broken kernel
Flattened or broken kernels whose embryos or endosperms have been damaged.
3.2.4
Sprouted kernel
A kernel in which the bud or radicle has not broken through the seed coat, but the seed
coat of the embryo has been broken or obviously raised and separated from the embryo;
OR a kernel whose bud or radicle breaks through the seed coat and does not exceed the
length of the kernel.
3.2.5
Moldy kernel
Kernels with moldy surfaces.
3.3
Foreign material
Matter other than wheat kernels, including throughs, inorganic and organic impurities.
3.3.1
Throughs
The material that passes through a round-hole sieve with a diameter of 1.5 mm.
3.3.2
Inorganic impurity
Minerals and other inorganic substances such as sand, cinder, bricks and tiles, and soil.
3.3.3
Organic impurity
Wheat without use value, heterogeneous grains, and other organic substances.
Note: The common wheat without use value includes: mildewed wheat, sprouted kernel with bud
exceeding the length of the original kernel, wheat with nematode disease, wheat with dwarf
bunt.
3.4
Colour and odour
The combined colour, luster, and odour inherent in a batch of wheat.
3.5
Wheat hardness
The ability of wheat kernels to resist deformation and crushing under external forces.
3.6
Wheat hardness index
The mass fraction of the sample remaining on the sieve as a percentage of the sample
when crushing the wheat sample under specified conditions, expressed by HI. The
larger the hardness index, the higher the wheat hardness; and vice versa, the lower the
wheat hardness.
4 Classification
4.1 Durum white wheat
Wheat with a white or yellow-white seed coat of at least 90% of the kernels AND a
hardness index of no less than 60.
4.2 Soft white wheat
Wheat with a white or yellow-white seed coat of at least 90% of the kernels AND a
hardness index of no more than 45.
4.3 Durum red wheat
Wheat with a dark-red or reddish-brown seed coat of at least 90% of the kernels AND
a hardness index of no less than 60.
4.4 Soft red wheat
Wheat with a dark-red or reddish-brown seed coat of at least 90% of the kernels AND
a hardness index of no more than 45.
4.5 Mixed wheat
Wheat that does not comply with the provisions of 4.1 to 4.4.
......
| Standard ID | GB 1351-2023 (GB1351-2023) | | Description (Translated English) | Wheat | | Sector / Industry | National Standard | | Classification of Chinese Standard | B22 | | Classification of International Standard | 67.060 | | Word Count Estimation | 7,738 | | Date of Issue | 2023-05-23 | | Date of Implementation | 2023-12-01 | | Older Standard (superseded by this standard) | GB 1351-2008 | | Administrative Organization | State Administration of Grain and Material Reserves | | Proposing organization | State Administration of Grain and Material Reserves | | Issuing agency(ies) | State Administration for Market Regulation, National Standardization Administration |
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