This standard specifies the relevant terms and definitions, classification, quality requirements, inspection methods, judgment rules, packaging, transportation and storage requirements for sorghum. This standard applies to the purchase, storage, transportation, processing and sale of edible sorghum. GB/T 8231-2007 Sorghum GB/T8231-2007 Standard download decompression password: www.bzxz.net
This standard specifies the relevant terms and definitions, classification, quality requirements, inspection methods, judgment rules, packaging, transportation and storage requirements for sorghum. This standard applies to the purchase, storage, transportation, processing and sale of edible sorghum.
This standard is a revision of GB/T8231-1987 "Sorghum".
Compared with GB/T8231-1987, the main changes of this standard are as follows:
--- Added tannin content index;
--- Revised the scope of application, classification, auxiliary sieve layer for bulk density determination, moisture content and shelled kernels of the original standard.
This standard replaces GB/T8231-1987 "Sorghum" from the date of implementation.
This standard is proposed by the State Administration of Grain.
This standard is under the jurisdiction of the National Technical Committee for Grain and Oil Standardization.
The drafting units of this standard: Liaoning Grain and Oil Inspection and Monitoring Institute, Liaoning Grain Science Research Institute.
The main drafters of this standard: Dong Dianwen, Liu Jiming, Chang Zhifa, Guo Guijin, Jia Shuli.
The previous versions of this standard are as follows:
---GB/T8231-1987.

The clauses in the following standards become the clauses of this standard through reference in this standard. For all referenced documents with dates, all subsequent amendments (excluding errata) or revised versions are not applicable to this standard. However, parties that reach an agreement based on this standard are encouraged to study whether the latest versions of these documents can be used. For all referenced documents without dates, the latest versions are applicable to this standard.
GB2715 Food Hygiene Standards
GB/T5490 General Rules for Inspection of Food, Oil and Vegetable Oils
GB5491 Sampling and Splitting Methods for Inspection of Food and Oil
GB/T5492 Methods for Identification of Color, Odor and Taste for Inspection of Food and Oil
GB/T5493 Methods for Inspection of Types and Mixtures of Food and Oil
GB/T5494 Methods for Inspection of Impurities and Imperfect Grains for Inspection of Food and Oil
GB/T5497 Methods for Determination of Moisture Content for Inspection of Food and Oil
GB/T5498 Methods for Determination of Bulk Density for Inspection of Food and Oil
GB/T8946 Plastic Woven Bags
GB/T15686 Determination of Tannin Content in Sorghum
LS/T3801 Grain packaging sacks

ICS67.060
National Standard of the People's Republic of China
GB/T8231-2007
Replaces GB/T8231-1987
Sorghum
Issued on October 16, 2007
General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China Standardization Administration of China
Implemented on May 1, 2008
This standard is a revision of GB/T8231-1987 "Sorghum". Compared with GB/T8231-1987, this standard has the following major changes: the tannin content index is added;
GB/T8231--200
1 has revised the scope of application, classification, auxiliary sieve layer for determining bulk density, moisture content and shelled kernels of the original standard. This standard replaces GB/T8231-1987 "Sorghum" from the date of implementation. This standard is proposed by the State Administration of Grain.
This standard is under the jurisdiction of the National Technical Committee for Grain and Oil Standardization. The drafting units of this standard are: Liaoning Grain and Oil Inspection and Monitoring Institute, Liaoning Grain Science Research Institute. The main drafters of this standard are: Dong Dianwen, Liu Jiming, Chang Zhifa, Guo Guijin, Jia Shuli. The previous versions of this standard are: -GB/T8231-1987.
1 Scope
GB/T8231-—2007
This standard specifies the relevant terms and definitions, classification, quality requirements, inspection methods, judgment rules, packaging, transportation and storage requirements of sorghum.
This standard applies to edible sorghum purchased, stored, transported, processed and sold. Normative references
The clauses in the following standards become the clauses of this standard through reference in this standard. For any dated referenced document, all subsequent amendments (excluding errata) or revised versions are not applicable to this standard. However, parties to an agreement based on this standard are encouraged to investigate whether the latest versions of these documents can be used. For any undated referenced document, the latest version applies to this standard. GB2715 Food Hygiene Standard
GB/T5490
Inspection of grain, oilseeds and vegetable oils
General Rules
GB5491
Sampling and sub-sampling methods for inspection of grain and oilseeds
GB/T5492
GB/T5493
GB/T5494
GB/T5497
GB/T5498
GB/T8946
GB/T15686
Food, oilseeds Inspection Color, odor, taste identification method Grain and oil inspection
Grain and oil inspection
Type and intermixing inspection method
Impurity and imperfect grain inspection method
Grain and oil inspection
Moisture determination method
Grain and oil inspection
Plastic woven bag
Bulk density determination method
Determination of tannin content in sorghum
LS/T3801
Grain packaging sacks
3 Terms and definitions
The following terms and definitions apply to this standard. 3.1
Bulk density testweight
The mass of high-seed grain (passing through a 4.5 mm round hole sieve and retained on a 2.0 mm round hole sieve) per unit volume is expressed in grams per liter (g/L).
Unsound kernels
Kernels that are damaged but still have use value include the following: 3.2.1
Spotted kernels
Kernels with spots on the surface, which damage the embryo or endosperm. 3.2.2
Injured kernels
Kernels that are damaged by insects, which damage the embryo or endosperm. GB/T8231-—2007
Broken kernels
Kernels with damage to the embryo or endosperm. 3.2.4
Sprouted kernelsbzxZ.net
Kernels with sprouts or young roots breaking through the seed coat.
Moldy kernels
Kernels with moldy surface.
Heat damaged kernel
Grains with noticeable discoloration and damage to the embryo or endosperm after being heated. 3.3
Foreign material
Material that passes through the specified sieve and has no use value, including the following: 3.3.1
Material passed sieve
Material that passes through a sieve with a diameter of 2.0 mm.
Inorganic impuritiesinorganic impurity
Impurities such as soil, sandstone, bricks and tiles.
Organic impurities
Organic impurities
Impurities such as sorghum kernels with no use value, sorghum husks (including unremoved sorghum husks), foreign grains, etc. 3.4
Colour and odour
Color and odor
The comprehensive color and odor inherent in a batch of sorghum. 4 Classification
According to the color of the outer seed coat of sorghum, it is divided into three categories: a) Red sorghum: grains with red seed coat; b) White sorghum: grains with white seed coat; Other sorghum: sorghum other than the above two categories. c)
5 Quality requirements
Each type of sorghum is graded according to bulk density. The quality indicators are shown in Table 1. Table 1 Sorghum quality indicators
Bulk density/(g/L)
≥740
≥720
≥700
Imperfect grains/
Tannins/
Moisture/
Impurities/
Shelled grains/
Color and odor
5.2 Hygiene indicators shall be implemented in accordance with GB2715 and relevant national standards and regulations. 5.3 Plant quarantine shall be implemented in accordance with relevant national standards and regulations. 6 Inspection methods
6.1 General rules for inspection: in accordance with GB/T5490. 6.2 Sampling and sub-sampling: in accordance with GB5491. 6.31
Color and smell inspection: in accordance with GB/T5492. Type and intermixing inspection: in accordance with GB/T5493. 6.4
Inspection of impurities and imperfect grains: in accordance with GB/T5494. 6.5
Water content inspection: in accordance with GB/T5497.
Bulk density inspection: in accordance with GB/T5498. The auxiliary sieve layer is changed to a 4.5mm round hole sieve. 6.7
6.8 Tannin inspection: in accordance with GB/T15686. 7 Judgment rules
All kinds of sorghum are graded by bulk density, and the other indicators are used as the basis for price increase or deduction. Sorghum below the third grade is substandard sorghum. 8 Labeling
GB/T8231—2007
The product name, quality grade, harvest year, place of origin, etc. should be indicated on the packaging or cargo registration card and the accompanying trade documents. 9 Packaging, transportation and storage
9.1 General requirements
The packaging, storage and transportation of packaged or bulk sorghum should comply with the relevant national technical standards and specifications. 9.2 Packaging
The packaging should be dense and firm, and should not leak or pollute the sorghum. When using sacks for packaging, it should comply with the provisions of LS/T3801; when using woven bags for packaging, it should comply with the provisions of GB/T8946. 9.3 Storage
It should be stored in a cool and dry place according to classification and grade, and should not be mixed with toxic and harmful items, and the stacking height should be appropriate. 9.4 Transportation
Pay attention to safety during transportation to prevent sun exposure, rain, leakage and pollution. The vehicles, ships and other equipment used for transportation shall not cause pollution to sorghum. GB/T8231-2007
National Standard of the People's Republic of China
GB/T8231—2007
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