1 and range
This standard specifies the origin, quality characteristics, raw material requirements, technological procedures, requirements, inspection methods, inspection rules, packaging, marking, transportation and storage of Duyun Maojian tea.
This standard is applicable to Duyun Maojian tea, which is made from small-leaf varieties of tea trees growing in the area specified in Chapter III of this standard, with one bud and one leaf as raw materials and processed according to the typical technological requirements of Duyun Maojian tea.
2, normative reference documents
The clauses in the following documents become standard clauses by referring to this standard. All subsequent modifications (excluding errata) or revisions of dated reference documents are not applicable to this standard. However, parties who have reached an agreement according to this standard are encouraged to study whether the latest versions of these documents can be used. For undated reference documents, the latest edition is applicable to this standard.
Analysis method of GB5009.57 tea hygiene standard
GB77 18 General Standard for Food Labeling
GB/T8302~83 14 physical and chemical inspection methods for tea.
GB9679 Hygienic Standard for Tea
GB/T 14487 terms for tea sensory evaluation.
GB 17924 general requirements for products of geographical origin.
SB/T 10035 technical requirements for tea sales, packaging and transportation.
SB/T 10095 general technical conditions for tea storage and maintenance.
SB/T 10 157 tea sensory evaluation method
3. Country of origin
3. 1 Duyun Maojian Tea Origin: Jingfeng, duyun city, Guizhou.
3.2 The origin of fresh leaves of Duyun Maojian tea is in duyun city, Guizhou.
4, fresh leaf grade and quality requirements
4. 1 grade
The quality grades of fresh leaves of Duyun Maojian tea are as follows:
A) Superclass: first, a bud and a leaf are displayed;
B) Level 1: one bud, one leaf and a half development;
C) The second stage: the development of a bud and a leaf.
4.2 Quality requirements
The length of fresh leaves is not more than 2.5cm, the petiole length is not more than 2mm, the bud leaves are complete, the leaves are light green or dark green, the leaves are fresh, tender, even and clean, the moisture content is not less than 72%, there is no mechanical damage, no pests and diseases spots, no fish scales and no purple bud leaves.
5, process specification
See Appendix A. Among them, the machine-made technology is suitable for the production of primary and secondary teas.
6. Requirements
6. 1 sensory requirements (see table 1)
Table 1
Graded outer crystal and inner crystal
The rope broke into pieces, and the color, clarity, fragrance, taste, soup color and leaf bottom were all broken.
Super tight, thin, curly, white and even cloth.
Sharp Mabel Miao, moist, free, tender, fragrant, durable and fresh, sweet, yellow, green, bright, tender, even and fresh.
The first-class compact, slender and curly white hair reveals a uniform green, moist, fragrant, fresh, mellow and yellow-green.
It is bright, green and bright.
The second-order compact curl is uneven, but even, dark green without inclusions, pure and mellow, yellow, green, yellow and green, and not bright.
6.2 Physical and chemical indicators (see Table 2)
Table 2
project
Water extract of total ash powder from primary water
Premium ≤6.0%≤5.0%≤0.5%≥40%
Grade I ≤6.5%≤5.5%≤ 1.0%≥39%
Grade II ≤6.5%≤6.0%≤ 1.5%≥38%
6.3 Health indicators (see Table 3)
Project unit
Lead mg/kg ≤2
Copper mg/kg ≤60
HCH mg/kg ≤0.2
DDT mg/kg ≤0.2
7. Detection method
7. 1 sensory evaluation method
The provisions of SB/T 10 157 and GB/T 14487 shall be implemented.
7.2 Physical and chemical inspection methods
The provisions of GB/T8304~GB/T8306 and GB/T83 1 1 shall be implemented.
7.3 Hygienic inspection methods
Implement the provisions of GB5009.57.
8, inspection plan
8. 1 Product ex-factory inspection
Each batch of products must be inspected by the quality inspection department of the enterprise for sensory, ex-factory moisture and packaging specifications. After passing the inspection, a product quality certificate can be issued before leaving the factory for sale.
8.2 Routine inspection of products
8.2. 1 The products shall be routinely inspected according to national regulations in the following cases:
A) When a new product is trial-produced or an old product is put into production;
B) When the product process changes;
C) When production is resumed after production is stopped;
D) During the regular inspection of normal production;
E) When inspected by the national quality inspection department.
8.2.2 Inspection is all the items in Chapter 6 of this standard.
8.3 Determination of unqualified products
According to the provisions of this standard, if a certain index of a product is found not to meet the requirements, it is judged as unqualified product, and any unqualified product shall not be sold as qualified product. If any product is found not to meet the requirements of GB9679 standard, it will be destroyed immediately. Anyone who finds that the label does not meet the requirements of GB 17924 and GB77 18 standards is not allowed to enter the market directly.
8.4 reinspection and arbitration
In the process of sales, if there is any dispute about the quality of Duyun Maojian tea, the local statutory inspection department shall double the sampling of the original batch of products according to the provisions of GB8302, and re-examine the disputed items, and the re-inspection results shall prevail.
8.5 Group sampling
Batch and sampling of products shall be carried out according to GB/T8302.
9. Marking, packaging, transportation and storage
9. 1 mark
The provisions of GB77 18 and GB 17924 shall be implemented.
9.2 packaging
Implement the provisions of SB/T 10035.
9.3 transportation
Implement the provisions of SB/T 10035.
9.4 storage
Implement the provisions of SB/ 10095.
Standard revision list
number
Original standard release notification number
Standard code and name DB52/433—200 1 Duyun Maojian tea
The revision of this standard was issued by (provincial) Bureau of Standards and Metrology on, and implemented as of.
Reasons for supplementary revision: In order to better standardize the production, processing and sales of Duyun Maojian tea, promote the healthy development of Duyun Maojian tea industry, expand the total tea economy, establish the brand image of Duyun Maojian tea, and make due contributions to local economic construction.
The specific opinions of the approval department on the revision and supplement of the original standard content serial number and paragraph number.
1
2
three
43.2
4. 1
6. 1
6.2 Origin of fresh leaves: duyun city, Guizhou.
Quality grade of fresh leaves of Duyun Maojian tea:
Super, first class and second class
Sensory requirements (see table 1)
Physical and chemical indexes: moisture: super ≤6.0%, first and second grade ≤ 6.5%; Water extract: Duyun, Guizhou ≥40.0%, Grade I ≥39.0%, Grade II ≥38.0%.
Supplements are: top grade, super grade, first grade and second grade.
Table 1: Add Acura
Moisture: Acura, Super, Grade I and Grade II ≤ 7.0%; Water extract: Grade I, Super Grade, Grade I and Grade II ≥36.0%
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