national standards of People's Republic of China 3.2.5 MoIdy kerneI Chongqing Huanyu Automobile Sales Company , https://www.huanyuautos.com
Wheat GB 1351-2008
Wheat replaces GB 1351-1999
2008-01-01 released 2008-05-01 implemented
Foreword The entire technical content of this standard is mandatory
This standard is a revision of GB 1351-1999 "Wheat."
The main technical differences between this standard and GB 1351---1999
----Modified terms and definitions such as impurities;
---- Added hardness index terms and definitions;
----The hardness index replaces the horniness rate and chalkiness rate as the indicators of the hardness and softness of wheat;
----Adjust the classification principles and indicators;
----Improved the imperfect grain index in the quality requirements;
---- Added inspection rules;
---- Added provisions on labeling.
The date of implementation of this standard replaces GB1351-1999.
This standard is proposed by the State Grain Bureau.
This standard is under the jurisdiction of the National Grain and Oil Standardization Committee.
This standard was drafted by: National Grain Administration Standard Quality Center, Beijing National Grain Quality Monitoring Center, Henan Provincial Grain Bureau, National Grain Administration Research Institute, China Reserve Grain Management Corporation, Henan University of Technology, and Ministry of Agriculture Grain and Product Quality Supervision and Inspection Test Center (Harbin), Shandong Province Grain Bureau, Hebei Province Grain Bureau, Anhui Province Grain Bureau, Inner Mongolia Autonomous Region Grain Bureau, Heilongjiang Province Grain Bureau, Jiangsu Provincial Grain Bureau, Sichuan Provincial Grain Bureau, Xinjiang Uygur Autonomous Region Grain Bureau, Shaanxi Province Grain Bureau, Jilin Province Grain Bureau.
The main drafters of this standard: Du Zheng, Tang Ruiming, Long Hao, Zhu Zhiguang, Xie Huamin, Li H, Zhou Guangjun, Shang Yanjun, Zhou Zhanming, Wang Caiqin, Yin Chenghua, Zhang Yuqin, Sun Hui, Yuan Xiaoping, Wu Cunrong, Wang Lekai, Du Xiangdong, Xiao Lirong, Ding Shiqi, He Zhonghu, Wang Bujun, Gu Yaxian, Yang Jun, Yin Jun, Zhang Xuemei, Liu Yuping, Xu Xiangying, Song Changquan.
The previous editions of the standards replaced by this standard are:
--- GB1351-1986, GB1351-1999.
wheat
1 Scope
This standard specifies the terms and definitions of wheat, classification, quality requirements, hygiene requirements, inspection methods, inspection rules, label identification, and packaging, storage and transportation requirements.
This standard applies to the acquisition, storage, transportation, processing and marketing of commercial wheat.
This standard does not apply to special varieties of wheat other than the standard classification.
2 Normative references
The clauses in the following documents have been adopted as references to this standard. For dated reference documents, all subsequent amendments (not included in the errata content) or revisions do not apply to this standard. However, all parties that have reached an agreement based on this standard are encouraged to study whether the latest versions of these documents can be used. version. For undated references, the latest version is applicable to this standard.
GB2715 Food Hygiene Standard
GB/T5490 General Rules for Inspection of Grains, Oils, and Vegetable Oils
GB/5491 grain and oil inspection sample, sample method
GB/T5492 Grain, oil inspection, color, smell, taste identification method
GB/T5493 Food and Oil Inspection Type and Intermixing Test Method
GB/T5494 Inspection of Impurities and Imperfect Granules for Grains and Oils
GB/T5497 Grain and Oil Inspection Moisture Determination
GB/T5498 Determination of bulk density of food and oil materials
GB13078 feed hygiene standard
GB/T21304 Wheat Hardness Determination Hardness Index Method
3 Terms and Definitions
The following terms and definitions apply to this standard
3.1 Test weight
The mass of wheat kernels per unit volume, expressed in grams per liter (g/L)
3.2 Unsounded wheat kernels unsound kerneI
Damaged but useful wheat granules. Including insect granules, diseased granules, damaged granules, germinated granules, and fungal granules.
3.2.1 worm granules injured kerneI
Worm-eaten, injuring embryo or endosperm granules.
3.2.2 spotted kerneI
Granules with lesions that injure embryo or endosperm granules.
3.2.2.1 Black embryo bIack germ kerneI
Grain embryo dark brown or black, injuring embryo or endosperm granules.
3.2.2.2 Gibberella gibbereIIa damaged kerneI
Seeds shrink, stay white, and some grains are purple, or there are obvious pink moldy, with black ascospora shells.
3.2.3 broken kernel broken kerneI
Flattening, crushing, and injuring embryo or endosperm granules.
3.2.4 Sprouted kerneI
The buds or radicles did not break through the seed coat but the seed coats of the embryos had broken or bulged and separated from the embryos, or the buds or young roots broke through the particles whose seed coat did not exceed the length of the particles.
Grainy mildew particles.
3.3 impurities foreign materiaI
Except for wheat grains, other substances include sieves, inorganic impurities, and organic impurities.
3.3.1 Throughs
Through the diameter of 1.5mm sieve material.
3.3.2 Inorganic impurities
Sand, cinder, brick, clay and other minerals and other inorganic substances.
3.3.3 organic impurities
Wheat with no use value, dissimilar grains and other organic substances.
Note: The common non-use value of wheat is: moldy wheat, buds in the particles than the length of the wheat, nematode disease wheat, head smut wheat and other particles.
3.4 Color and smell coIour and odour
The inherent color, luster and odor of a batch of wheat.
3.5 Wheat hardness
The ability of wheat kernels to resist deformation and breakage under external forces.
3.6 Wheat hardness index wheat hardness index
Wheat samples were pulverized under the specified conditions, and the mass fraction of the sample remaining on the sieve was represented by H1. The greater the hardness index, the higher the hardness of wheat, and the contrary indicates that the hardness of wheat is lower.
Category 4
4.1 Hard White Wheat
Seeds with white or yellowish white wheat grains of not less than 90% and hardness index not less than 60.
4.2 Soft white wheat
Seeds with white or yellowish white wheat grains of not less than 90% and hardness index no higher than 45.
4.3 Hard Red Wheat
Seeds with dark red or reddish brown wheat with no less than 90% wheat and a hardness index of no less than 60.
4.4 Soft Red Wheat
Seeds with dark red or reddish brown wheat with no less than 90% wheat and no hardness index higher than 45.
4.5 Mixed wheat
Wheat that does not meet the requirements of 4.1 to 4.4.
5 Quality requirements and hygiene requirements
5.1 Quality Requirements
See Table 1 for various types of wheat quality requirements. The weight-to-weight ratio is a definite index, and 3 is moderate.
Table 1 Wheat Quality Requirements
Grade weight (g/L)
Imperfect grain/%
Impurity/%
Moisture/%
Color, smell
Total of which: Minerals
1
≥790
≤6.0
≤1.0
≤ 0.5
≤12.5
normal
2
≥770
3
≥750
≤ 8.0
4
≥730
5
≥710
≤10.0
substandard
<710
_
Note: "-" is not required.
5.2 Hygienic requirements
5.2.1 Edible wheat shall be implemented in accordance with GB2715 and related national regulations.
5.2.2 feed wheat GB13078 and the relevant state regulations.
5.2.3 Wheat for other purposes shall be implemented according to relevant national standards and regulations.
5.2.4 Plant quarantine shall be carried out according to relevant national standards and regulations.
6 test methods
6.1 sample, sample: According to GB5491 implementation.
6.2 color, odor test: According to GB/T5492 implementation.
6.3 wheat color test: According to GB/T 5493 implementation.
6.4 wheat hardness test: According to GB/T21304 implementation.
6.5 impurities, imperfect particle inspection: According to GB/T 5494 implementation.
6.6 moisture test: According to GB/T 5497 implementation.
6.7 weight test: According to GB/T5498 implementation.
7 inspection rules
7.1 The general rules of inspection are performed according to GB/T5490.
7.2 Inspection batches are wheat of the same type, origin, year of harvest, same transportation unit, and storage unit.
7.3 Judgment rules: The bulk density should meet the corresponding grade requirements in Table 1, and other indicators should be implemented according to the relevant regulations of the country.
8 tag identification
The name, type, grade, place of production, year of harvest and month of the product should be stated on the packaging or in the accompanying documents.
9 Packaging, Storage and Transportation
9.1 Packaging
The packaging should be clean, firm, and non-destructive. The seal should be tight and strong. It should not be spilled; it should not cause pollution and abnormal smell to the product.
9.2 Storage
It should be stored in clean, dry, rain-proof, moisture-proof, insect-proof, rodent-proof, and odor-free warehouses. It should not be mixed with poisonous and harmful substances or substances with high water content.
9.3 Transportation
Use hygienic requirements for transportation. Pay attention to protection against rain and contamination during transportation.