GB 5991.1-2000 Technical requirements for grading of oriental tobacco
Some standard content:
GB 5991. 1--2000
This standard is a revision of the relevant contents of GB5991-1986 "Fragrant Tobacco". After this revision, GB5991-1986 consists of two parts, this standard is the first part, and the second part is the content related to packaging and transportation. In addition, GB5992-1986 "Test Methods for Flavored Tobacco" was also revised as the third part of this series of standards. In terms of technical content, this standard has made the following modifications to the relevant contents of GB5991-1986: 1. Added reference standards;
1. Cancelled the quality regulations of the original standard, added the classification regulations for flavored tobacco, and proposed corresponding grading quality technical requirements; 1. The nouns and terms in the original standard were revised and used as Appendix A (Appendix to the standard): - The contents of Chapter 4\Test Methods\ and GB5992--1986 in the original standard were changed to GB/T5991.3-2 000 "Testing Methods for Flavored Tobacco";
- The 5th chapter of the original standard is revised to "Testing Rules", and the 6th chapter of the original standard "Packaging, Marking, Transportation, Storage and Preservation" is changed to GB/T5991.2--2000 "Packaging, Marking and Storage and Transportation of Flavored Tobacco".
This series of standards includes:
GB5991.1-2000
) Technical requirements for grading of flavored tobacco
GB/T5991.2--2000 Aromatic tobacco packaging, marking and storage and transportation GB/T5991.3--2000 Inspection methods for aromatic tobacco This standard shall replace GB5991--1986 from the date of implementation. Appendix A of this standard is the appendix of the standard. This standard is proposed by the State Tobacco Monopoly Administration. This standard is under the jurisdiction of the National Tobacco Standardization Technical Committee. The drafting unit of this standard: China Tobacco Leaf Production and Sales Corporation. The main drafters of this standard: Nie Heping, Liu Guoshun, Li Rui, Feng Qian, Zhou Zeqiong, Wang Guohong, Zhai Junchao, Fu Yunpeng, Wang Zhongfu. 152
National Standard of the People's Republic of China
Aromatic tobacco
Grading technical requirements
Aromatic tobaccoGrading technical requirements This standard specifies the technical requirements and inspection rules for the grading of flavored tobacco. GB5991.1--2000
Replaces GB5991-1986
This standard applies to flavored tobacco after normal production, blending and processing. It is mainly based on text standards, supplemented by physical samples. It is the basis for grading, purchasing, processing and handover. Export supply is based on physical samples. 2 Reference 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 discuss the use of the following The possibility of the latest version of the standard. GB/T5991.3--2000 Inspection method for oriental tobacco 3 Classification
3.1B oriental tobacco
Basma type, small and thick leaves, fine veins, mainly golden and orange in color, good luster, strong elasticity, with the aroma characteristics of this type of tobacco leaves 3.2S oriental tobacco
Samsun type, small leaves, fine veins, mainly golden to dark yellow in color, good luster, strong elasticity, with the aroma characteristics of this type of tobacco leaves.
4 Grouping and grading
According to the location of tobacco leaves (top leaves, upper second shed, waist leaves, lower second, foot leaves), they are divided into three groups: upper, middle, and lower. Grouping characteristics are shown in Table 1. Table 1 Grouping characteristics
Upper group
Middle group
Lower group
4.2B and S oriental tobacco are divided into three categories in color. See Table 2. Approved by the State Administration of Quality and Technical Supervision on January 24, 2000 158
fine, exposed
coarse, prominent
fine, flat
leaf size
implemented on March 1, 2000
4.3 Grading
GB5991.1--2000
Table 2 Color characteristics
Color characteristics
Withered yellow, golden yellow, dark yellow
Pure yellow, light yellow
Reddish brown, light brown, color
The grade is determined based on the appearance quality factors such as the position, length, color, gloss, elasticity, identity, oil content, organizational structure, variegated color and damage, and completeness of the leaf. The quality requirements of B-type spice tobacco (Basma) are shown in Table 3, and the quality requirements of S-type spice tobacco (Samsun) are shown in Table 4. 5 Technical requirements
5.1 The quality requirements for the grading of B-type spice tobacco shall comply with the requirements of Table 3. Table 3 Quality requirements of B-type spice tobacco (Basma)Grade
Upper first grade
Upper second grade
Upper third grade
Middle first grade
Middle second grade
Middle third grade
Lower first grade
Lower second grade
Lower third grade
Upper second fence
Upper second fence
Upper second shed
Upper second shed
Upper second shed
Upper second shed
Lower second shed
Lower Second Shed
Lower Second Shed
Length.cm
Orange, golden yellow,
Orange, golden yellow,
Light brown, reddish brown,
Note: The green content of Class A is allowed to be 5%, Class B 10%; Class K 15%, luster
Still bright
Still bright" Medium to thick
Still bright
Medium to thick
Still bright
5.2S-type flavor tobacco grading quality requirements shall comply with the provisions of Table 4. Medium to thick
Control factors
Integrity
Organization structure, variegated color, and damage!
Slightly fine
Slightly fine
Slightly fine
Looser
Looser
Looser
≤10%≥90%
≤20%
≤15%
≤15%
≥80%
≥90%
≥85%
≥80%
≥85%
≥85%
≥70%
≥60%
Previous level
Previous level
Previous level
Intermediate level
Intermediate level
Next level
Next level
Next level
Next level
Next level
Next level
Upward second shed
Upward second shed
Upward second shed
Upward second shed
Upward second shed
Downward second shed
Downward second shed
GB 5991.1—2000
Table 4 Quality requirements of type S oriental tobacco (Samsun)Quality factors
Length, cm
Orange, golden yellow,
Orange, golden yellow,
Light brown, reddish brown,
Withered yellow, golden yellow,
Light brown, reddish brown,
Allowed green content: 5% for category A, 10% for category B, and 15% for category K. Luster
Still bright
Still bright
Still bright
Medium to thick
Medium to thick
Medium to thick
Organization structure
Slightly fine
Slightly fine
Slightly fine
Loose
Loose
Loose
2Color quality requirements of Canik variety: Class A is light brown, reddish brown, brown; Class B is light yellow to dark yellow; Class K is dark brown and skirt color. 5.3 Grading principles
Control factors
Color damage
≤10%
≤15%
≤15%
≤20%
≤15%
≤15%
≤30%
Completeness
≥90%
≥90%
≥80%| |tt||≥90%
≥85%
≥80%
≥85%
≥85%
≥70%
≥60%
The position, length, color, gloss, identity, oil content and organizational structure of spice tobacco all meet the requirements of a certain grade, and the leaf integrity, variegated color, green content and damage shall not exceed the requirements of a certain grade, and shall be classified as a certain grade. 5.4 Principles for the treatment of several types of tobacco leaves
5.4.1 Yellow tobacco leaves, dead green tobacco leaves, moldy tobacco leaves and shuttle tobacco leaves are not graded. 5.4.2 Tobacco leaves contaminated by banned pesticides and other toxic and hazardous substances will not be purchased. 5.4.3 Tobacco leaves whose tobacco ribs are not dry or whose moisture content exceeds the requirements must be re-dried before purchase. 5.5 Provisions on moisture content, natural sand content, debris, foreign matter, etc. 5.5.1 The moisture content of tobacco purchased is 14% to 16%, and the moisture content of tobacco leaves including tobacco leaves shall not exceed 15%. 5.5.2 Natural sand content: the lower tobacco shall not exceed 1.5%, and the other grades shall not exceed 1%. 5.5.3 The sum of the number of tobacco leaves mixed with high or low grades of each grade shall not exceed 15%. 5.6 Tobacco leaves are purchased in original bunches or loose leaves.
6 Inspection rules
Inspection of original tobacco
GB 5991.1—2000
The tobacco leaves sold by tobacco farmers shall be inspected and graded according to the quality regulations. 6.2 On-site inspection
6.2.1 Sampling quantity: 10% to 20% of tobacco leaves are taken from each batch (referring to the same region and the same level of oriental tobacco) within 100 pieces (packages), and 5% to 10% of tobacco leaves are taken from the part exceeding 100 pieces. The sampling ratio can be increased or decreased as appropriate after consultation between the two parties. 6.2.2 Sampling is carried out in pieces, and each piece is sampled from the center to the surrounding area, and the sample is 3kg to 5kg. 6.2.3 The sampled samples shall be inspected in accordance with the provisions of GB/T5991.3. 6.2.4 During the on-site inspection, if either party believes that indoor inspection is necessary, the two parties shall jointly take samples, tightly pack them, sign and seal them for inspection. 6.2.5 If any party has different opinions on the inspection results during the on-site inspection, they shall be sent to the next level quality and technical supervision department for inspection. If there is still objection to the inspection results, re-inspection can be carried out, and the re-inspection shall prevail. 7 Physical Standard Samples
7.1 Physical Standard Samples are one of the bases for inspection and grading. 7.2 Physical Standard Samples are divided into two categories: Base Standard Samples and Imitation Standard Samples. 7.2.1 Base Standard Samples are formulated in accordance with this standard, and after being approved by the national tobacco authorities, they are reported to the national quality and technical supervision authorities for approval. Base Standard Samples are updated every three years. 7.2.2 Imitation Standard Samples are jointly imitated by the relevant departments of each province, city, and autonomous region, or entrusted to grassroots units to imitate and sent to the relevant provincial departments for approval, and approved by the provincial quality and technical supervision authorities for implementation. Imitation Standard Samples are updated once a year. 7.3 Principles for the formulation of physical standards
7.3.1 Physical Standard Samples are mainly medium-quality leaves of various levels, including roughly equal numbers of better and worse leaves. Each level is 250g~500g, pressed into (300×160×30)mm~(300×160×50)mm. Packaged in non-toxic plastic. 7.3.2 The physical standard sample shall indicate the variety, grade, year and be stamped with the seal of the approval unit. 7.4 Implementation of physical standard sample
When implementing, the total quality level of the physical standard sample shall be used as a reference. When there is a dispute over the imitation standard sample, the reference standard sample shall be used as the basis. 161
A1 Air-cured; sun-cured
GB 5991. 1--2000
Appendix A
(Appendix to the standard)
The harvested tobacco leaves are strung and clamped with hemp or other similar non-polluting ropes, and are conditioned mainly by sun-curing using the heat of sunlight and naturally circulated air.
A2 Position
According to the location of the tobacco leaves on the plant. From bottom to top, they are divided into foot leaves, lower second sheds, waist leaves, upper second sheds, and top leaves. A3 Leaf length length
The distance from the tip to the base of the leaf (excluding the petiole) (ISO8043). A4 Body
The thickness of the tobacco leaf.
Colour
The different shades of colour of the tobacco leaf after curing. A6 Bright
The purity and brightness of the colour on the surface of the tobacco leaf. A7 Structure
The density of the arrangement of tobacco leaf cells.
A8 Oil
When the tobacco leaf has a moderate moisture content, it feels oily or dry, soft or stiff according to sensory identification. A9 Whole tolerance The degree of integrity of the tobacco leaf after curing.
A10 Waste
The damaged part of the tobacco leaf tissue penetrates through the back of the leaf, losing the strength and firmness to be processed into silk. A11 Variegated
The presence of patches of color on the tobacco leaf surface that are different from the basic color, such as water spots, insect spots, flushing, etc. Oil spots are not variegated. A12 Greenish
The degree of greenish color that can be changed in the basic color of tobacco leaves. A13 Foreign matter
Other debris that is not of the same genus as tobacco leaves, tobacco stems, tobacco buds, etc. A14 Scrap
Leaves that can pass through a sieve with a mesh diameter of 8 mm but cannot pass through a sieve with a mesh diameter of 3 mm. A15 Grading
Grading is determined based on the appearance quality factors such as the location, length, color, gloss, identity, oil content, tissue structure, variegated color, damage and integrity of the leaves.1--2000
Appendix A
(Standard Appendix)
The harvested tobacco leaves are strung and clamped with hemp or other similar non-polluting strings, and are cured mainly by sun exposure using the heat of sunlight and naturally circulated air.
A2 Position
According to the location of the tobacco leaves on the plant. From bottom to top, they are divided into foot leaves, lower second sheds, waist leaves, upper second sheds, and top leaves. A3 Leaf length
The distance from the tip of the leaf to the base of the leaf (excluding the petiole) (ISO8043). A4 Body
The thickness of the tobacco leaves.
Colour
The different shades of the tobacco leaves after curing. A6 Bright
The purity and brightness of the color on the surface of the tobacco leaves. A7 Structure
The density of the arrangement of tobacco leaf cells.
A8 Oil
When tobacco leaves have moderate moisture content, they may feel oily or dry, soft or stiff according to sensory identification. A9 Whole tolerance The degree of integrity of tobacco leaves after curing.
A10 Waste
The damaged part of tobacco leaf tissue penetrates through the back of the leaf, losing the strength and firmness of being processed into silk. A11 Variegated
There are patches of color different from the basic color on the surface of tobacco leaves, such as water spots, insect spots, flushing, etc. Oil spots are not variegated. A12 Greenish
The degree of greenish color that can be changed in the basic color of tobacco leaves. A13 Foreign matter
Other debris, tobacco stems, tobacco buds, etc. that are not of this genus. A14 Scrap
Any leaf that can pass through a sieve with a mesh diameter of 8 mm but cannot pass through a sieve with a mesh diameter of 3 mm. A15 grading
Grades are determined based on the appearance quality factors such as leaf position, length, color, gloss, identity, oil content, tissue structure, variegated color, damage and leaf integrity.1--2000
Appendix A
(Standard Appendix)
The harvested tobacco leaves are strung and clamped with hemp or other similar non-polluting strings, and are cured mainly by sun exposure using the heat of sunlight and naturally circulated air.
A2 Position
According to the location of the tobacco leaves on the plant. From bottom to top, they are divided into foot leaves, lower second sheds, waist leaves, upper second sheds, and top leaves. A3 Leaf length
The distance from the tip of the leaf to the base of the leaf (excluding the petiole) (ISO8043). A4 Body
The thickness of the tobacco leaves.
Colour
The different shades of the tobacco leaves after curing. A6 Bright
The purity and brightness of the color on the surface of the tobacco leaves. A7 Structurebzxz.net
The density of the arrangement of tobacco leaf cells.
A8 Oil
When tobacco leaves have moderate moisture content, they may feel oily or dry, soft or stiff according to sensory identification. A9 Whole tolerance The degree of integrity of tobacco leaves after curing.
A10 Waste
The damaged part of tobacco leaf tissue penetrates through the back of the leaf, losing the strength and firmness of being processed into silk. A11 Variegated
There are patches of color different from the basic color on the surface of tobacco leaves, such as water spots, insect spots, flushing, etc. Oil spots are not variegated. A12 Greenish
The degree of greenish color that can be changed in the basic color of tobacco leaves. A13 Foreign matter
Other debris, tobacco stems, tobacco buds, etc. that are not of this genus. A14 Scrap
Any leaf that can pass through a sieve with a mesh diameter of 8 mm but cannot pass through a sieve with a mesh diameter of 3 mm. A15 grading
Grades are determined based on the appearance quality factors such as leaf position, length, color, gloss, identity, oil content, tissue structure, variegated color, damage and leaf integrity.
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