This standard specifies the definition, quality index, inspection method and packaging, transportation and storage requirements of corn for starch and fermentation industry. This standard applies to the purchase, storage, transportation, processing and sale of commercial corn for starch and fermentation industry. GB/T 8613-1999 Corn for starch fermentation industry GB/T8613-1999 Standard download decompression password: www.bzxz.net

GB/T8613—1999
This standard makes the following important technical changes to GB/T8613-1988 "Corn for Starch Industry" and GB/T8614—1988 "Corn for Fermentation Industry":
The starch content index of each grade of corn has been increased by 1 percentage point, the "germination rate" index has been cancelled;
-The "imperfect grain" index has been changed from no more than 10.0% and 15.0% to no more than 5.0%. This standard replaces GB/T8613-1988 and GB/T8614--1988 from the date of implementation. This standard was proposed by the State Grain Reserves Administration and the Ministry of Agriculture of the People's Republic of China. The responsible drafting unit of this standard is: Standard Quality Management Office of State Grain Reserve Bureau; Participating drafting units are: Jilin Provincial Grain Kitchen, Grain Quality Supervision, Inspection and Testing Center of the Ministry of Agriculture, Liaoning Provincial Grain Bureau, Research Institute of State Grain Reserve Bureau, Zhengzhou Grain College; Main drafters of this standard are: Tang Ruiming, Feng Xizhong, Shen Yanhong, Qi Baozi, Wang Huibo, Lin Jiayong, Wang Yanbo. 286
1 Scope
National Standard of the People's Republic of China
Maize for starch fermentation industry
Maize for starch fermentation industryGB/T 8613—1999
Replaces GB/T8613--1988
GB/T 8614—1988
This standard specifies the definition, quality indicators, inspection methods and packaging, transportation and storage requirements of corn for starch and fermentation industry. This standard applies to the purchase, storage, transportation, processing and sale of commercial corn for starch and fermentation industry. 2 Referenced standards
The provisions contained in the following standards constitute the provisions of this standard through reference in this standard. When this standard is published, the versions shown are valid. All standards will be revised, and parties using this standard should explore the possibility of using the latest versions of the following standards. GB1353-1999 Corn
GB/T5514—1985 Grain and Oilseed Inspection Starch Determination Method
3 Definitions
This standard adopts the following definitions.
3.1 Imperfect kernels, impurities, color and odor shall be implemented in accordance with 3.2, 3.3 and 3.4 of GB1353-1999. 3.2 Dent cornWww.bzxZ.net
The kernels are dent-shaped, concave at the top, and the kernels are large. The endosperm is horny on the outside and powdery on the inside, with a soft texture. 3.3 Heating
Corn produces high temperatures due to excessive respiration. 4 Quality Indicators
Corn for starch industry is graded by starch content. Grade indicators and other quality indicators are shown in Table 1. Table 1
Quality Indicators of Corn for Starch and Fermentation IndustryGrade
Starch, (dry basis), %
Impurities, %
Moisture, %
Imperfect kernels, %
Note: The purchase of corn with moisture content greater than that specified in Table 1 shall be carried out in accordance with relevant national regulations. 4.2 Corn for starch industry should be dent type with high starch content. 4.3 Corn below the third grade is not suitable for starch and fermentation industry. 4.4 Corn after drying or heating is not suitable for starch and fermentation industry. Approved by the State Administration of Quality and Technical Supervision on November 1, 1999, among which, moldy kernels
Color, odor
Implemented on April 1, 2000
GB/T 8613---1999
4.5 Sanitary inspection and plant quarantine shall be carried out in accordance with relevant national standards and regulations. 5 Inspection methods
5.1 General principles of inspection, sample separation and inspection of impurities, imperfect kernels, moisture, color and odor shall be carried out in accordance with 6.1, 6.2, 6.4, 6.5.6.7 of GB1353-1999.
5.2 Starch inspection shall be carried out in accordance with GB/T5514.
Packaging, transportation and storage
Packaging, transportation and storage shall be carried out in accordance with relevant national standards and regulations. 288
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