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GB 1352-2023 PDF English

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GB 1352-2023: Soya bean
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GB 1352: Evolution and historical versions

Standard IDContents [version]USDSTEP2[PDF] deliveryName of Chinese StandardStatus
GB 1352-2023English185 Add to Cart 0-9 seconds. Auto-delivery Soya bean Valid
GB 1352-2009English85 Add to Cart 0-9 seconds. Auto-delivery Soybean Obsolete
GB 1352-1986English70 Add to Cart 0-9 seconds. Auto-delivery Soybean Obsolete

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GB 1352-2023: Soya bean

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GB NATIONAL STANDARD OF THE PEOPLE’S REPUBLIC OF CHINA ICS 67.060 CCS B 23 Replacing GB 1352-2009 Soya bean Issued on. MAY 23, 2023 Implemented on. DECEMBER 01, 2023 Issued by. State Administration for Market Regulation; Standardization Administration of the People’s Republic of China.

Table of Contents

Foreword... 3 1 Scope... 4 2 Normative references... 4 3 Terms and definitions... 4 4 Categories... 7 5 Quality requirements... 8 6 Inspection methods... 9 7 Inspection rules... 10 8 Labeling... 10 9 Packaging, storage, and transportation... 11 Annex A (normative) Inspection methods for percent of sound kernel, percent of damaged kernel and percent of heat-damaged kernel... 12

Foreword

This document was drafted in accordance with the provisions of GB/T 1.1-2020 “Directives for standardization - Part 1.Rules for the structure and drafting of standardizing documents”. This document replaces GB 1352-2009 “Soya bean”. Compared with GB 1352-2009, the main technical changes are as follows. - MODIFY the scope of application of the standard; - MODIFY the definitions of sound kernel, high-oil soya bean, and high-protein soya bean; - MODIFY the requirements for percent of damaged kernel; - MODIFY the quality indicators of high-protein soya beans; - ADD the out-of-grade of soya beans. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. The issuing authority shall not be held responsible for identifying any or all such patent rights. The previous released versions replaced by this document are as follows. - GB 1352-1978, GB 1352-1986, GB 1352-2009. Soya beans

1 Scope

This document specifies the terms and definitions, categories, quality requirements, inspection methods, inspection rules, labeling, packaging, storage, and transportation requirements for soya beans. This document applies to the acquisition, storage, transportation, processing, and sale of commercial soya beans.

2 Normative references

The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. GB/T 191 Packaging - Pictorial marking for handling of goods GB 5009.3 National food safety standard - Determination of moisture in food GB 5009.5 National food safety standard - Determination of protein in food GB 5009.6-2016 National food safety standard - Determination of fat in food GB/T 5490 Inspection of grain and oils - General rules GB/T 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

3 Terms and definitions

For the purpose of this document, the following terms and definitions apply. 3.1 sound kernel Kernels of which the color is normal and the kernel is intact. 3.2 immature kernel Kernels of which the kernel is not full, shriveled to one-half or more of the kernel surface, or the green part of the cotyledons is one-half or more of the whole (except green-cotyledon soya beans), and are significantly different from normal kernels. 3.3 splits; broken kernel Kernels of which the cotyledons are broken up to a quarter or more of the kernel volume. 3.4 damaged kernel Soya bean kernels that are insect-bored, bacterial-damaged, moldy, sprouted, frost- damaged, heat-damaged or damaged by other reasons. 3.5 impurities; useless material Non-soya-bean materials that remain in the sample after passing through the specified sieve layer and sieving. 3.6 percent of sound kernel The mass fraction of sound kernels in the sample. 3.7 percent of damaged kernel The mass fraction of damaged kernels in the sample. 3.8 percent of heat-damaged kernel The mass fraction of heat-damaged kernels in the sample. 3.9 high-oil soya bean Soya beans of which the fat content is not less than 20.0 % (on a dry basis). 3.10 high-protein soya bean Soya beans of which the protein content is not less than 40.0 % (on a dry basis).

4 Categories

Soya beans can be divided into the following categories according to the color of seed coat. a) Yellow soya beans. soya beans of which the seed coat is yellow or light yellow, the hilum color is yellowish brown, light brown, or dark brown, and the kernel content is not less than 95 %. b) Green soya beans. soya beans of which the seed coat is green and the kernel content is not less than 95 %. According to the color of its cotyledons, it is divided into two types. green-coat green-cotyledon soya beans and green-coat yellow- cotyledon soya beans. c) Black soya beans. soya beans of which the seed coat is black and the kernel content is not less than 95 %. According to the color of its cotyledons, it is divided into two types. black-coat green-cotyledon soya beans and black-coat yellow- cotyledon soya beans.

5 Quality requirements

5.1 The quality indicators of soya beans shall comply with the requirements in Table 1. 5.2 The quality indicators of high-oil soya beans shall comply with the requirements in Table 2. 5.3 The quality indicators of high-protein soya beans shall comply with the requirements in Table 3.

6 Inspection methods

6.1 Sample cutting and dividing. implement in accordance with the requirements of GB/T 5491. 6.2 Inspection of percent of sound kernel. implement in accordance with Annex A. 6.3 Inspection of percent of damaged kernel. implement in accordance with Annex A. 6.4 Inspection of percent of heat-damaged kernel. implement in accordance with Annex A. 6.5 Inspection of impurities. implement in accordance with GB/T 5494. 6.9 Determination of protein content. implement in accordance with GB 5009.5.The coefficient (F) for converting nitrogen into protein is calculated as 6.25.The test results are calculated according to formula (1). 6.10 Determination of fat content. implement in accordance with the first method specified in GB 5009.6-2016.The test results are calculated according to formula (2).

7 Inspection rules

7.1 The general rules for inspection shall be implemented in accordance with GB/T 5490. 7.2 The inspection batch shall be soya beans of the same category, origin, harvest year, transportation unit and storage unit. 7.5 High-protein soya beans are graded according to protein content. If the protein content is lower than the minimum grade, they are not classified as high-protein soya beans. Other indicators are implemented in accordance with relevant national regulations.

8 Labeling

8.1 It shall indicate the name, category, grade, origin, and harvest year of the product on the packaging or accompanying documents. 8.2 The labeling of prepackaged soya beans shall comply with relevant national standards. 8.3 The packaging, storage, and transportation markings of the outer packaging shall comply with the requirements of GB/T 191. Xo, dry basis 8.4 Genetically modified soya beans shall be labeled according to relevant national regulations.

9 Packaging, storage, and transportation

9.1 Packaging The packaging shall be clean, firm, and without damage. The seams shall be tight and strong. It shall not cause the product to leak. It shall not bring pollution or abnormal odor to the product. Genetically modified soya beans shall be packaged separately. 9.2 Storage It shall be stored in a clean, dry, rain-proof, moisture-proof, insect-proof, rodent-proof, and odor-free warehouse. 9.3 Transportation It shall use transportation tools and containers that meet hygienic requirements. During transportation, attention shall be paid to water-proofing, moisture-proofing, and pollution prevention.

Annex A

(normative) Inspection methods for percent of sound kernel, percent of damaged kernel and percent of heat-damaged kernel A.1 Instruments and apparatus A.1.1 Balance, sensitivity 0.01 g. A.1.2 Grain sieves. A.1.3 Sample dividing machine and sample dividing plate. A.1.4 Analysis plates, small dishes, tweezers, etc. A.2 Operation method TAKE 500 g (m1) of the sample according to GB/T 5491; SIEVE it twice according to the method specified in GB/T 5494; then PICK OUT the large impurities on the sieve and fines; WEIGH them together (m2). From the sample that has been tested for large impurities, WEIGH 100 g (m3) of the sample; POUR it into the analysis plate; PICK OUT the impurities (m4), damaged kernels (m5), immature kernels, and broken kernels (m6); WEIGH them. PICK OUT the heat-damaged kernels individually (if necessary, peel off the coat and observe whether the color of the cotyledons has changed) and WEIGH (m7). A.3 Result calculation A.3.1 The percent of sound kernel is calculated according to formula (A.1). A.3.2 The percent of damaged kernel is calculated according to formula (A.2). A.3.3 The percent of heat-damaged kernel is calculated according to formula (A.3). ......
Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al.


      

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