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LY/T 1324-2019: Raw materials for vegetable tannin
Status: Valid LY/T 1324: Evolution and historical versions
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| LY/T 1324-2019 | English | 169 |
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Raw materials for vegetable tannin
| Valid |
LY/T 1324-2019
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| LY/T 1324-2012 | English | 239 |
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Emblic leafflowers bark
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LY/T 1324-2012
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| LY/T 1324-1999 | English | 199 |
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Emblic leafflowers bark
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LY/T 1324-1999
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PDF similar to LY/T 1324-2019
Basic data | Standard ID | LY/T 1324-2019 (LY/T1324-2019) | | Description (Translated English) | Raw materials for vegetable tannin | | Sector / Industry | Forestry Industry Standard (Recommended) | | Classification of Chinese Standard | B72 | | Classification of International Standard | 66.020.99 | | Word Count Estimation | 7,720 | | Date of Issue | 2019-10-23 | | Date of Implementation | 2020-04-01 | | Older Standard (superseded by this standard) | LY/T 2610-2016; LY/T 1326-2012; LY/T 1325-2012; LY/T 1324-2012 | | Regulation (derived from) | Announcement of the State Forestry and Grassland Administration No. 17 of 2019 | | Issuing agency(ies) | State Forestry and Grassland Administration | LY/T 1324-2019: Raw materials for vegetable tannin---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
(Tannin raw material)
ICS 66.020.99
B 72
LY
People's Republic of China Forestry Industry Standard
Replaces LY/T 1324-2012, LY/T 1325-2012, LY/T 1326-2012, LY/T 2610-2016
Tannin raw material
Raw materials for vegetable tannin
2019-10-23 released
2020-04-01 implementation
Published by the National Forestry and Grassland Administration
Foreword
This standard was drafted in accordance with the rules given in GB/T 1.1-2009.
This standard is made up of LY/T 1324-2012 "Yu Ganzi Bark", LY/T 1325-2012 "Myrica Bark", LY/T 1326-2012
"Oak Bowl" and LY/T 2610-2016 "Mazhan Acacia Bark" are integrated.
This standard was proposed and managed by the National Forestry Chemical Product Standardization Technical Committee (SAC/TC 558).
This standard was drafted. Forest Products Chemical Industry Research Institute, Chinese Academy of Forestry, Guangxi Baise Forest Chemical Plant, Guangxi Wuming Gum Plant,
Qinhuangdao City, Hebei Province, Yunguan Glue Co., Ltd.
The main drafters of this standard. Wang Yongmei, Xu Man, Zhang Liangliang, Zhang Jianfu, Yan Xiuzhen, Xie Yunbo.
The previous versions of the standards replaced by this standard are.
--GB 7645-87, GB 7646-87, GB 7647-87
--LY/T 1324-1999, LY/T 1325-1999, LY/T 1326-1999
--LY/T 1324-2012, LY/T 1325-2012, LY/T 1326-2012, LY/T 2610-2016
Tannin raw material
1 Scope
This standard specifies the technical requirements, sampling, and testing of ginseng bark, barberry, bark of Myrica rubra, bark of Acacia melon, and rubber bowl
Methods, acceptance rules, packaging, storage and transportation.
This standard is applicable to the quality assessment of ginseng bark, barberry, bark of horsetail, bark of acacia, and rubber bowls.
2 Normative references
The following documents are essential for the application of this document. For dated references, only the dated version applies to this article
Pieces. For undated references, the latest version (including all amendments) applies to this document.
LY/T 1083 Analytical test method for raw materials of tannin
3 terms and definitions
The following terms and definitions apply to this standard.
3.1
Raw materials for vegetable tannin
Also known as vegetable tanning material, the plant used to produce tannin products is derived from various parts of the plant, such as bark, husk, fruits, leaves and wood.
3.2
Yuganzi bark embed leafflowers bark
Yuganzi is a deciduous shrub or small tree of the genus Phyllanthus. Common Yuganzi (Phyllanthus emblica)
L.), P.hainansis Merr., P.Parvifolins Buch-Ham., Whose bark is used to produce
Sweet pecan gum.
3.3
Myrica bark box myrtle bark
Myrica esculenta Buch (-Ham.) Is the bark of Myrica Myrica.
Cassia.
3.4
Acacia mangium bark
The bark of Acacia mangium Willd, a species of evergreen tall acacia, is used in the production of Acacia mangium Willd.
3.5
Oak bowl valonea
Mainly the shell bucket of Quercus variabilis Bl. Or Quercus acutissima carr. Both shells are bowls
Shape, commonly known as the oak bowl. The shell has many bracts on the outside, commonly known as bowl spines. Used for the production of rubber bowl rubber.
4 Technical requirements
The technical indicators of Yuganzi bark should meet the requirements of Table 1. The technical index of barberry shall meet the requirements of Table 2. Horse Acacia Bark
The technical indicators should meet the requirements of Table 3. The technical specifications of the oak bowl shall meet the requirements of Table 4.
Table 1 Technical indicators of bark of Yuganzi
Index name First-class qualified product
Appearance has longitudinal dry wrinkles on the outer surface, no cracking, gray-brown, light brown or brown on the inner surface, with small groove edges. Bast rays
Visible to the naked eye, the bast fibers appear as dark chordal bands. The break is crisp.
Fresh and mildew free. The broken surface is pale ochre and slightly pink. Relatively fresh, with individual mildew. The broken surface is reddish brown.
Moisture,% ≤ 17.0
Total extract,% ≥ 40.0 30.0
Tannin,% ≥ 30.0 20.0
Total color (Lovibond) ≤ 22.0 35.0
Table 2 Technical indicators of barberry
Index name First-class qualified product
Appearance The outer surface is rough, with horizontal wrinkle cracks and irregular longitudinal cracks, which are grayish brown or grayish yellow. Not obvious on the inner surface
The groove edges are ochre. The inner and outer skin boundaries are curved and undulating, with occasional local skin tissue surrounded by the endothelium. Stone cells can be seen with the naked eye
See, grit-like. The break is crisp.
Fresh and mildew free. The broken surface is light brown. Relatively fresh, with individual mildew. The broken surface is brown.
Moisture,% ≤ 17.0
Total extract,% ≥ 34.0 28.0
Tannin,% ≥ 24.0 17.0
Total color (Lovibond) ≤ 25.0 37.0
Table 3 Technical specifications of Acacia bark
Index name First-class qualified product
The appearance is fresh, dry and free of adulteration and adulteration. The thickness is greater than 2 mm and the length is 15 mm ~ 25 mm.
No mildew, light brown on the inner surface, light brown on the broken surface
Slightly pink.
Individual mold spots, brown inner surface, broken red-brown.
Moisture,% ≤ 17.0
Total extract,% ≥ 29.0 23.0
Tannin,% ≥ 23.0 17.0
Total color (Lovibond) ≤ 22.0 30.0
Table 4 Technical Index of Oak Bowl
Index name First-class qualified product
The appearance of bowl thorns is basically complete, and mildew is not allowed.
Shell section is pale yellow-white Light yellow shell section is reddish brown or tan
Acorns,% ≤ 3.0 4.0
Impurities,% ≤ 2.0
Moisture,% ≤ 17.0
Total extract,% ≥ 43.0 33.0
Tannin,% ≥ 32.0 28.0
Total color (Lovibond) a ≤ 25.0 32.0
a The total color index of the oak bowl is determined by the user whether to be included in the inspection item.
5 Sampling
5.1 Sampling rules
No less than 5 bags shall be sampled for each batch of tannin raw materials under 100 bags; 101 ~ 500 bags shall be no less than 10 bags; 2501
Above the bag is calculated according to formula (1).
nx 3.0 ... (1)
In the formula.
x--number of sampling bags;
n--the number of bags of raw materials for each batch of capsules.
5.2 Sampling method and sample preparation
5.2.1 Pour each bag of samples out of the stockpile according to the pour-out method. Use a quartering method to reduce the sample to 2 kg.
1083 performs sampling and sample preparation.
5.2.2 The oak bowl (about 2 kg) is reduced to 500 g by quartering. Samples after acorns and impurities are removed, and then sampled according to LY/T 1083.
And sample preparation.
6 Test method
6.1 Appearance
Observe visually.
6.2 Moisture
According to LY/T 1083.
6.3 Total extract
According to LY/T 1083.
6.4 Tannin
According to LY/T 1083.
6.5 Total colors
According to LY/T 1083.
6.6 Acorn
The oak bowl sample was reduced to about 500 g by quartering, and weighed (accurate to 0.1 g). The acorns were picked and weighed in a container. Acorn quality
The quantity score G1 is calculated according to formula (2).
= 11
G ... (2)
In the formula.
m1--mass of acorn, unit is gram (g);
m--the total mass of the sample in grams (g).
The result is reported to one decimal place.
6.7 Impurities
The remaining sample after measuring the acorn content was sieved with a 2.0 mm diameter circular hole sieve. Move the upper part of the sieve non-destructively into the enamel pan and choose
The foreign matter except the oak bowl is combined with all the sieve matter and weighed in a container. The impurity mass fraction G2 is calculated according to formula (3).
m2
2
G = ... (3)
In the formula.
m2--mass of impurity, unit is gram (g);
m--the total mass of the sample in grams (g).
The result is reported to one decimal place.
7 Acceptance rules
7.1 The raw materials of tannin in the same carrier are a batch.
7.2 Each batch of tannin raw materials shall meet the requirements of this standard.
7.3 The raw materials of tannin extract shall be used as the basis for grading according to the technical indicators.
7.4 If there is a dispute between the supplier and the buyer on the grading of the raw materials, the two parties can jointly sample 3 copies according to this standard, save 1 copy each, and another 1
Qualified inspection agencies conduct arbitration inspections in accordance with this standard.
8 Packaging, storage and transportation
8.1 Yuganzi bark, Myrica rubra bark, Mazhan acacia bark, etc. are chopped to less than 100 mm in length and packed in packaging bags.
8.2 The raw materials of tannin are stored in a ventilated and dry warehouse, and are stored in bulk to avoid moisture and pollution.
8.3 It should be protected from rain and moisture during transportation.
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