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GB/T 11762-2006 English PDF (GBT11762-2006)

GB/T 11762-2006 English PDF (GBT11762-2006)

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GB/T 11762-2006: Rapeseed

This Standard specifies the terms and definitions, classification, quality requirements, inspection methods, judgment rules, and requirements for marking, packaging, storage and transportation of rapeseed. This Standard is applicable to commercial common rapeseed and low erucic acid and low glucosinolate rapeseed for processing edible oil.
GB/T 11762-2006
GB
NATIONAL STANDARD OF THE
PEOPLE REPUBLIC OF CHINA
ICS 67.200.20
B 33
Replacing GB/T 11762-1989
Rapeseed
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ISSUED ON: SEPTEMBER 14, 2006
IMPLEMENTED ON: APRIL 01, 2007
Issued by: General Administration of Quality Supervision, Inspection and Quarantine;
Standardization Administration of the PEOPLE Republic of China.
Table of Contents
Foreword ... 3
1 Scope ... 4
2 Normative References ... 4
3 Terms and Definitions ... 5
4 Classification ... 6
5 Quality Indicators ... 6
6 Inspection Method ... 7
7 Judgment Rules ... 7
8 Marking ... 8
9 Packaging, Storage and Transportation ... 8
Appendix A (Normative) Inspection Method of Heat Damaged Kernel and Distinctly Green Kernel ... 9
Rapeseed
1 Scope
This Standard specifies the terms and definitions, classification, quality requirements, inspection methods, judgment rules, and requirements for marking, packaging, storage and transportation of rapeseed.
This Standard is applicable to commercial common rapeseed and low erucic acid and low glucosinolate rapeseed for processing edible oil.
2 Normative References
The provisions in following documents become the provisions of this Standard through reference in this Standard. For dated references, the subsequent amendments (excluding corrigendum) or revisions do not apply to this Standard, however, parties who reach an agreement based on this Standard are encouraged to study if the latest versions of these documents are applicable. For undated references, the latest edition of the referenced document applies.
GB 5491 Inspection of grain and oilseeds???Methods for sampling and sample reduction GB/T 5492 Inspection of grain and oilseed - Methods for identification of color, odor and taste
GB/T 5494 Inspection of grain and oilseeds - Methods for determination of foreign matter and unsound kernels
GB/T 8946 Plastic woven sack
GB/T 14488.1 Method for determination of oil content in oilseeds
GB/T 14489.1 Method for determination of moisture and volatile matter content in oilseeds
GB 19641 Hygienic standard for oil seeds
LS/T 3801 Gunny bags for packing of grain
NY/T 91 Determination of erucic acid in the oil of rapeseed - Gas chromatographic method ISO 9167-1 Rapeseed ?€? Determination of glucosinolates contents ?€? Part 1: Method using high-performance liquid chromatography
3 Terms and Definitions
For the purposes of this Standard, the following terms and definitions apply. 3.1 Rapeseed
Small spherical seeds of siliques cultivated by cruciferous herbaceous plants, the seed coats are black, yellow, maroon and other colors.
3.2 Genetically modified organism rapeseed
Rapeseed produced from seeds grown using genetically modified organism technology. 3.3 Oil content
Content of crude fat in net rapeseed (calculated by standard moisture). 3.4 Impurity
Organic matter and inorganic matter other than rapeseed, and rapeseed with no use value. 3.5 Unsound kernel
Damaged or defective grains that are still useful. Including sprouted kernel, moldy kernel, distinctly green kernel and heat damaged kernel.
3.5.1 Sprouted kernel
Particles of shoots or young roots breaking through the seed coat.
3.5.2 Moldy kernel
Particles with moldy grain surface.
3.5.3 Distinctly green kernel
Particles whose cotyledons present obvious green, and the kernels are immature. 3.5.4 Heat damaged kernel
Particles whose cotyledons turn black or dark brown due to heat.
3.6 Erucic acid content
Percentage of erucic acid [cis-docos(dec)enoic-(13) acid] in the fatty acids of rapeseed oil. 3.7 Glucosinolate content
Appendix A
(Normative)
Inspection Method of Heat Damaged Kernel and Distinctly Green Kernel
A. l Instruments and utensils
A.1.1 Rapeseed counting plate (with width of 25 mm~80 mm, length of 120 mm~250 mm), 100 or 50 holes.
A.1.2 Adhesive tape (with width of 25mm~80mm, length of 120mm~250mm, the bottom of the tape is white).
A.1.3 Roller (with width of 25mm~80mm).
A.2 Operation method
A.2.1 Sampling
Randomly take rapeseed from the rapeseed sample that has been removed of impurities with a 100-hole or 50-hole counting plate, so that the micropores of the counting plate are filled. Cover the counting plate with adhesive tape; peel off the tape; and transfer all the rapeseed kernels to the adhesive tape. Carry out 5 or 10 times (take a total of 500 rapeseeds) samplings; then get 5 or 10 adhesive tapes with rapeseed kernels stuck.
A.2.2 Rolling
Place the adhesive tape with the kernels on the cardboard; and roll the adhesive tape with the grain surface by a roller to rupture the seed coat.
A.2.3 Counting
A.2.3.1 Heat damaged kernels
Observe the rolled kernels under incandescent light; confirm particles whose cotyledons are black or dark brown; and count N1 (the sum of heat-damaged kernels in the rolled kernels). If N1 is equal to 0, the result of heat-damaged kernels is not detected; if N1 is greater than or equal to 1, then repeat A.2.1, A2.2 operation procedures; count N2.
A.2.3.2 Distinctly green kernels
Observe the rolled kernels; confirm particles whose cotyledons are obviously green; and count N3 (the sum distinctly green kernels in the rolled kernels). If N3 is equal to 0, the result of distinctly green kernels is not detected; if N3 is greater than or equal to 1, then repeat A.2.1,

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