CN101598714A - The evaluation method of quality of fresh tea leaf raw material - Google Patents
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- 239000002994 raw material Substances 0.000 title claims abstract description 51
- 238000011156 evaluation Methods 0.000 title claims abstract description 21
- 241001122767 Theaceae Species 0.000 title claims abstract 16
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 30
- 239000000835 fiber Substances 0.000 claims abstract description 15
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 15
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 14
- 238000000034 method Methods 0.000 claims abstract description 8
- 238000005516 engineering process Methods 0.000 abstract description 5
- 238000004458 analytical method Methods 0.000 abstract description 2
- 238000011161 development Methods 0.000 abstract description 2
- 238000009659 non-destructive testing Methods 0.000 abstract description 2
- 238000010183 spectrum analysis Methods 0.000 abstract description 2
- 235000013616 tea Nutrition 0.000 description 79
- 244000269722 Thea sinensis Species 0.000 description 75
- 238000009313 farming Methods 0.000 description 10
- 238000012545 processing Methods 0.000 description 6
- 235000009024 Ceanothus sanguineus Nutrition 0.000 description 4
- 240000003553 Leptospermum scoparium Species 0.000 description 4
- 235000015459 Lycium barbarum Nutrition 0.000 description 4
- RYYVLZVUVIJVGH-UHFFFAOYSA-N caffeine Chemical compound CN1C(=O)N(C)C(=O)C2=C1N=CN2C RYYVLZVUVIJVGH-UHFFFAOYSA-N 0.000 description 4
- 239000000126 substance Substances 0.000 description 3
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- LPHGQDQBBGAPDZ-UHFFFAOYSA-N Isocaffeine Natural products CN1C(=O)N(C)C(=O)C2=C1N(C)C=N2 LPHGQDQBBGAPDZ-UHFFFAOYSA-N 0.000 description 2
- 235000006468 Thea sinensis Nutrition 0.000 description 2
- 150000001413 amino acids Chemical class 0.000 description 2
- 229960001948 caffeine Drugs 0.000 description 2
- VJEONQKOZGKCAK-UHFFFAOYSA-N caffeine Natural products CN1C(=O)N(C)C(=O)C2=C1C=CN2C VJEONQKOZGKCAK-UHFFFAOYSA-N 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000003749 cleanliness Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000003306 harvesting Methods 0.000 description 2
- 235000020333 oolong tea Nutrition 0.000 description 2
- 102000004169 proteins and genes Human genes 0.000 description 2
- 108090000623 proteins and genes Proteins 0.000 description 2
- 230000029058 respiratory gaseous exchange Effects 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 238000005303 weighing Methods 0.000 description 2
- 235000000173 Camellia sinensis var sinensis Nutrition 0.000 description 1
- 240000007524 Camellia sinensis var. sinensis Species 0.000 description 1
- 102000004190 Enzymes Human genes 0.000 description 1
- 108090000790 Enzymes Proteins 0.000 description 1
- 238000005273 aeration Methods 0.000 description 1
- 230000004103 aerobic respiration Effects 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
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- 239000000428 dust Substances 0.000 description 1
- 235000009569 green tea Nutrition 0.000 description 1
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- 229910052760 oxygen Inorganic materials 0.000 description 1
- 230000000284 resting effect Effects 0.000 description 1
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Abstract
The evaluation method of quality of fresh tea leaf raw material belongs to tealeaves assessment technique field.Its objective is provides a kind of evaluation method that can objectively and fairly estimate quality of fresh tea leaf raw material.Its technical essential is: with in the fresh tea leaf raw material with three inclusions indexs of water percentage, total fiber content, total nitrogen content of tea leaf quality height correlation evaluation basis as the tea leaf quality; The coefficient of establishing the quality of fresh tea leaf raw material evaluation is: the product of bright leaf total nitrogen content and bright leaf water percentage is divided by bright leaf total fiber content.For objectively and fairly estimating the raw material quality of the bright leaf of tea, a scientific methods is provided, Accurate Analysis and scientific evaluation have been realized to the tea leaf quality, for reasonable grade of dividing the bright leaf of tea provides the foundation of science with purchasing to fix a price, also be modern science and technology such as utilization near-infrared spectral analysis technology, development fast, equipment accurate, that quality of fresh tea leaf raw material is analyzed in Non-Destructive Testing provides may.
Description
Technical field
The present invention relates to a kind of evaluation method of quality of fresh tea leaf raw material.
Background technology
The tea leaf quality is to become to sample tea the material base that quality forms.Leaf quality mainly comprises the tender degree of bright leaf, uniform degree, freshness three aspects.
Leaf tenderness is a leading indicator of weighing the tea leaf quality, and tender degree is that tealeaves is stretched the degree of ripeness of educating.The old tender of bright leaf is the key factor of weighing tea leaf quality, is the leading indicator of identifying the tealeaves grade.Old tender degree is the comprehensive external manifestations of the inherent various chemical constitutions of bright leaf, and the tealeaves shape matter that the tender bright leaf of children is under normal circumstances made is held concurrently excellent, and the tea leaf quality that thick old leaf is made is low order then.China's teas is a lot, and all kinds of tea all have unique qualitative characteristics, requires also different to the old tender degree of bright leaf.China's famous green tea requires the delicate as superfine mao peak, Mount Huang of bright leaf, oolong tea then require the standard of bright leaf be a bud three or four leaves newly slightly, the oolong tea of making just has the qualitative characteristics of thick aroma and good taste.
The uniform degree of bright leaf also is to weigh one of tea leaf quality index, is comprising two aspects of bright leaf evenness and cleanliness.Bright leaf evenness refers to a collection of bright foliation voltinism shape and reaches consistent basically.Aborning distinct issues are exactly that old tender leaf mixes, the component content difference, and physical behavior differs, ripe the differing of old tender life that complete, it is disconnected broken to knead tender leaf, not slivering of Lao Ye, dry do wet irregular, broken, dust tea is too much, produce for the tea making serialization and bring great difficulty.Cleanliness refers to the content of snotter in the bright leaf, and these snotteres have two kinds of teas and non-teas.
Bright leaf freshness is meant that the bright leaf of the tea of plucking keeps original physicochemical character as far as possible.The bright leaf storage time generally can not be above 16 hours.Bright leaf is adopted after the disengaging tea tree parent, still proceeds respiration.Along with moisture loss, the endogenous enzyme activity of bright leaf strengthens, and inclusions changes because of decomposing conversion.Long as the resting period, storage is not good at, and piles up blocked up, tension, poor aeration, then bright leaf aerobic respiration release heat is distributed and is not gone out, the leaf temperature rise, inclusions is decomposed faster, consumes the more, under the not enough situation of oxygen supply, cause anuerobic respiration, make sugar decomposition produce the alcohol smell for alcohol, bright leaf heating is rubescent, mildew and rot rotten.
In China's tealeaves industry, tea tree planting and Tea Processing are the relation of the division of labor and cooperation basically.Most tea district's tea tree plantings and raw material are gathered all by tea plantation and tea grower's administration, and Tea Processing then is from the purchase fresh leaf by professional processing factory.At present, when China Tea Processing enterprise checks and accepts bright leaf in buying,, artificially assert the quality good or not of tealeaves generally by the mode of sensory evaluation.Because lack unification, science and easy evaluation method and equipment, the evaluation criterion that human factor causes is improper, and is out of control to the tea products quality, and the phenomenon that because of bright leaf price dispute takes place between tea processing factory and the tea grower occurs repeatedly.Therefore, objectively and fairly estimating quality of fresh tea leaf raw material is the production difficult problem that the tealeaves industry presses for solution.
Summary of the invention
The object of the present invention is to provide a kind of evaluation method that can objectively and fairly estimate quality of fresh tea leaf raw material.
Its technical scheme is: a kind of evaluation method of quality of fresh tea leaf raw material is characterized in that:
With in the fresh tea leaf raw material with three inclusions indexs of water percentage, total fiber content, total nitrogen content of tea leaf quality height correlation evaluation basis as the tea leaf quality; The coefficient of establishing the quality of fresh tea leaf raw material evaluation is: the product of bright leaf total nitrogen content and bright leaf water percentage is divided by bright leaf total fiber content.
Its technique effect is: because the quality of tea leaf quality is formed directly related with the inclusions in the bright leaf, so filter out in the fresh leaf total nitrogen content with tea leaf quality height correlation in a large number by chemical method, water percentage, three inclusions indexs of total fiber content, evaluation basis as the tea leaf quality, and then establishment quality of fresh tea leaf raw material coefficient, and estimate quality of fresh tea leaf raw material with the size of quality of fresh tea leaf raw material coefficient, thereby be objective, estimate the raw material quality of the bright leaf of tea equitably, a scientific methods is provided, Accurate Analysis and scientific evaluation have been realized to the tea leaf quality, for reasonable grade of dividing the bright leaf of tea provides the foundation of science with purchasing to fix a price, also be modern science and technology such as utilization near-infrared spectral analysis technology, development fast, accurately, the equipment that quality of fresh tea leaf raw material is analyzed in Non-Destructive Testing provides may (Lie table 1 as follows, 2,3,4).
Relation between quality of fresh tea leaf raw material and the water percentage (accounting for the number percent of fresh weight) table 1
| The plucking time kind | One bud, one leaf | Two leaves and a bud | One bud, three leaves | One bud, four leaves | First leaf | Second leaf | The 3rd leaf | The 4th leaf | Stalk |
| May 13 | 73.79 | 75.90 | 76.10 | 74.78 | 61.75 | 63.58 | 69.95 | 69.34 | 75.15 |
| Mays 14 Ri Pingyangte early | 75.88 | 75.69 | 76.89 | 75.31 | 74.81 | 74.15 | 71.10 | 70.12 | 82.11 |
| May 15 the summer heatable adobe sleeping platform | 75.06 | 75.75 | 74.61 | 74.07 | 73.80 | 71.70 | 71.62 | 70.39 | 77.85 |
| May 15 Dragon Well tea 43 | 73.78 | 74.80 | 73.05 | 72.06 | 71.64 | 70.19 | 69.19 | 67.73 | 74.44 |
| Zhejiang farming 113 on May 19 | 73.15 | 74.55 | 74.38 | 69.12 | 71.53 | 71.44 | 69.78 | 68.14 | 77.63 |
| May 19 come-up state | 72.50 | 73.78 | 71.68 | 70.51 | 72.40 | 71.34 | 69.58 | 77.83 | |
| May 20, Mount Huang was early special | 74.64 | 75.53 | 75.45 | 76.10 | 73.42 | 72.34 | 71.61 | 71.31 | 80.45 |
| Agricultural drought resisting on May 20 | 73.55 | 74.51 | 74.58 | 73.78 | 72.17 | 72.74 | 71.02 | 76.04 | |
| Mays 21 Ri Wuniu early | 71.73 | 73.88 | 73.44 | 70.16 | 71.30 | 72.48 | 70.26 | 67.14 | 74.70 |
| Agricultural drought resisting on May 26 | 72.48 | 73.97 | 74.40 | 74.87 | 70.44 | 71.93 | 70.29 | 77.21 | |
| May 26 Dragon Well tea 43 | 70.89 | 72.97 | 73.94 | 73.73 | 68.95 | 70.96 | 71.65 | 70.57 | 76.44 |
| Mays 26 Ri Pingyangte early | 71.60 | 72.65 | 72.56 | 72.06 | 70.72 | 70.34 | 69.30 | 73.34 | |
| Zhejiang farming 113 on May 29 | 73.35 | 74.59 | 75.30 | 74.72 | 72.61 | 73.23 | 72.19 | 68.82 | 75.86 |
| May 19 easypro tea early | 73.16 | 74.71 | 75.05 | 74.54 | 72.43 | 73.49 | 72.08 | 69.40 | 77.79 |
| Mays 30 Ri Wuniu early | 74.47 | 75.23 | 75.32 | 74.65 | 73.82 | 73.63 | 71.40 | 77.39 | |
| May 30 Fuyun No.6 | 74.34 | 75.10 | 73.93 | 73.49 | 73.63 | 73.77 | 71.52 | 70.32 | 77.62 |
| June 3 Folium Ilicis | 72.19 | 73.47 | 75.53 | 74.38 | 70.81 | 72.23 | 72.47 | 71.65 | 81.36 |
| June 3, Mount Huang was early special | 74.31 | 74.59 | 74.39 | 73.19 | 72.88 | 72.76 | 69.65 | 67.55 | 79.56 |
| June 3 state of riding | 74.74 | 74.51 | 72.76 | 71.74 | 72.90 | 73.47 | 69.05 | 68.79 | 77.87 |
From table data as can be seen, to a bud four leaves, water percentage is very approaching from a bud one leaf, and the stalk water percentage is the highest, the monolithic water percentage is obviously lower, and along with the blade degree of ripeness increases, water percentage descends gradually.
Relation between quality of fresh tea leaf raw material and the total fiber content (accounting for the number percent of dry weight) table 2
| The plucking time kind | One bud, one leaf | Two leaves and a bud | One bud, three leaves | One bud, four leaves | First leaf | Second leaf | The 3rd leaf | The 4th leaf | Stalk |
| May 13 | 6.93 | 8018 | 10.30 | 12.75 | 701. | 10.39 | 10.40 | 10.98 | 22.79 |
| Mays 14 Ri Pingyangte early | 6.67 | 7.54 | 8.79 | 9.61 | 6.04 | 7.76 | 8.96 | 9.08 | |
| May 15 the summer heatable adobe sleeping platform | 6.56 | 7.90 | 9.20 | 10.64 | 7.67 | 9.86 | 9.99 | 10.24 | 18.29 |
| May 15 Dragon Well tea 43 | 7.14 | 8.05 | 10.63 | 11.25 | 8.07 | 8.79 | 9.61 | 9.73 | 22.26 |
| Zhejiang farming 113 on May 19 | 7.14 | 8.12 | 10.32 | 12.02 | 7.73 | 9.87 | 10.41 | 10.74 | |
| May 19 come-up state | 7.22 | 8.85 | 10.97 | 12.69 | 9.32 | 10.59 | 11.05 | 27.80 | |
| May 20, Mount Huang was early special | 7.01 | 8.83 | 10.11 | 6.46 | 8.75 | 9.90 | 10.41 | 16.03 | |
| Agricultural drought resisting on May 20 | 6.40 | 7.65 | 8.47 | 10.52 | 5.94 | 7.57 | 8.08 | 10.82 | |
| Mays 21 Ri Wuniu early | 7.39 | 10.04 | 12.64 | 12.88 | 7.63 | 10.43 | 13.08 | 13.59 | 21.13 |
| Agricultural drought resisting on May 26 | 7.22 | 8.25 | 10.09 | 11.28 | 10.55 | 12.44 | 12.68 | 23.16 | |
| May 26 Dragon Well tea 43 | 6.96 | 7.91 | 10.14 | 11.82 | 7.51 | 8.25 | 10.03 | 11.24 | 19.94 |
| Mays 26 Ri Pingyangte early | 7.28 | 7.66 | 10.64 | 12.24 | 8.49 | 9.74 | 11.10 | 24.79 | |
| Zhejiang farming 113 on May 29 | 7.91 | 9.17 | 12.11 | 14.42 | 7.67 | 9.77 | 11.20 | 14.46 | 22.64 |
| May 19 easypro tea early | 7.54 | 8.78 | 12.12 | 13.55 | 8.02 | 10.15 | 11.24 | 12.29 | 17.47 |
| Mays 30 Ri Wuniu early | 8.37 | 9.77 | 12.71 | 13.32 | 8.00 | 10.38 | 11.38 | 16.91 | |
| May 30 Fuyun No.6 | 7.79 | 8.96 | 10.90 | 13.03 | 8.14 | 9.83 | 11.07 | 12.72 | 17.59 |
| June 3 Folium Ilicis | 7.41 | 7.77 | 9.16 | 11.30 | 6.82 | 7.90 | 9.66 | 9.69 | 16.48 |
| June 3, Mount Huang was early special | 6.89 | 8.26 | 10.00 | 10.58 | 7.53 | 9.08 | 9.55 | 10.02 | 16.67 |
| June 3 state of riding | 6.96 | 8.47 | 10.50 | 11.73 | 7.49 | 9.19 | 9.26 | 9.86 | 21.93 |
From table data as can be seen, to a bud four leaves, the total fiber content difference is very big from a bud one leaf, and along with the blade degree of ripeness increases, total fiber content increases, total fiber content is the highest in the stalk.Therefore, total fiber content can be used as the important parameter that shows the tender degree of fresh leaf, participates in constituting the quality of fresh tea leaf raw material coefficient, and total fiber content is high more, and the tender degree of raw material is poor more, and the quality of fresh tea leaf raw material coefficient is also just more little.
Relation between quality of fresh tea leaf raw material and the total nitrogen content (accounting for the number percent of dry weight) table 3
| The plucking time kind | One bud, one leaf | Two leaves and a bud | One bud, three leaves | One bud, four leaves | First leaf | Second leaf | The 3rd leaf | The 4th leaf | Stalk |
| May 13 | 4.68 | 4.02 | 3.87 | 2.58 | 4.81 | 3.64 | 2.63 | ||
| Mays 14 Ri Pingyangte early | 5.13 | 3.68 | 4.93 | 4.02 | 3.71 | 3.22 | 3.31 | ||
| May 15 the summer heatable adobe sleeping platform | 4.76 | 4.46 | 4.05 | 3.57 | 4.50 | 3.63 | 3.17 | 2.82 | |
| May 15 Dragon Well tea 43 | 4.60 | 4.31 | 3.16 | 3.30 | 4.47 | 4.18 | 3.06 | 2.84 | 2.97 |
| Zhejiang farming 113 on May 19 | 4.38 | 3.82 | 3.27 | 2.98 | 5.25 | 3.88 | 3.46 | 3.17 | |
| May 19 come-up state | 4.65 | 3.98 | 3.00 | 2.93 | 3.88 | 3.37 | 3.01 | 2.336 | |
| May 20, Mount Huang was early special | 6.39 | 4.55 | 4.41 | 3.97 | 4.62 | 3.90 | 3.30 | 2.85 | 3.37 |
| Agricultural drought resisting on May 20 | 4.78 | 4.55 | 4.34 | 4.11 | 5.46 | 4.63 | 3.95 | 3.31 | |
| Mays 21 Ri Wuniu early | 4.29 | 4.23 | 3.39 | 2.71 | 4.53 | 4.17 | 3.70 | 3.37 | 3.20 |
| Agricultural drought resisting on May 26 | 4.76 | 4.48 | 3.88 | 3.48 | 4.26 | 3.46 | 3.39 | 2.85 | |
| May 26 Dragon Well tea 43 | 4.79 | 4.01 | 3.26 | 3.22 | 4.55 | 3.74 | 3.12 | 2.88 | 2.54 |
| Mays 26 Ri Pingyangte early | 4.61 | 4.89 | 3.69 | 3.55 | 4.19 | 3.40 | 3.23 | 2.45 | |
| Zhejiang farming 113 on May 29 | 4.49 | 4.08 | 3.18 | 2.66 | 3.90 | 3.45 | 3.22 | 2.96 | 2.17 |
| May 19 easypro tea early | 4.62 | 4.22 | 3.19 | 3.26 | 4.58 | 4.27 | 3.31 | 3.23 | 2.73 |
| Mays 30 Ri Wuniu early | 4.56 | 3.98 | 3.34 | 3.18 | 4.25 | 3.78 | 3.43 | 2.33 | |
| May 30 Fuyun No.6 | 4.94 | 4.73 | 3.61 | 3.43 | 4.59 | 3.96 | 3.48 | 3.22 | 2.85 |
| June 3 Folium Ilicis | 4.48 | 3.85 | 3.29 | 2.96 | 4.39 | 3.75 | 3.19 | 2.75 | 2.37 |
| June 3, Mount Huang was early special | 5.93 | 4.93 | 4.15 | 3.89 | 5.26 | 4.37 | 3.43 | 3.10 | 3.08 |
| June 3 state of riding | 4.92 | 4.08 | 3.48 | 3.39 | 4.44 | 4.09 | 3.48 | 3.13 | 2.96 |
From the table data as can be seen, to a bud four leaves, first leaf to the, four leaf total nitrogen contents have notable difference from a bud one leaf, along with the blade degree of ripeness increases, total nitrogen content reduces gradually, and total nitrogen content is in relatively low level in the stalk, is starkly lower than the above grade raw material of a bud four leaves.The high low reaction of total nitrogen content the content height of protein, amino acid and caffeine in the raw material.In general, in the high-grade young tender raw material, the content of protein, amino acid and caffeine is abundanter.Therefore, the height of total nitrogen content and quality of fresh tea leaf raw material relation in direct ratio, content is high more, and the tender degree of raw material is good more, and the quality of fresh tea leaf raw material coefficient is also just big more.
Relation table 4 between quality of fresh tea leaf raw material and the quality of fresh tea leaf raw material coefficient
| The plucking time kind | One bud, one leaf | Two leaves and a bud | One bud, three leaves | One bud, four leaves | First leaf | Second leaf | The 3rd leaf | The 4th leaf | Stalk |
| May 13 | 0.498 | 0.373 | 02.86 | 0.152 | 0.418 | 0.245 | 0.166 | ||
| Mays 14 Ri Pingyangte early | 0.584 | 0.322 | 0.611 | 0.385 | 0.294 | 0.249 | |||
| May 15 the summer heatable adobe sleeping platform | 0.545 | 0.427 | 0.329 | 0.249 | 0.433 | 0.264 | 0.227 | 0.194 | |
| May 15 Dragon Well tea 43 | 0.476 | 0.400 | 0.217 | 0.212 | 0.397 | 0.334 | 0.221 | 0.198 | 0.092 |
| Zhejiang farming 113 on May 19 | 0.449 | 0.350 | 0.236 | 0.172 | 0.486 | 0.281 | 0.232 | 0.201 | |
| May 19 come-up state | 0.467 | 0.332 | 0.196 | 0.163 | 0.301 | 0.227 | 0.190 | 0.065 | |
| May 20, Mount Huang was early special | 0.490 | 0.377 | 0.299 | 0.525 | 0.323 | 0.239 | 0.195 | 0.169 | |
| Agricultural drought resisting on May 20 | 0.549 | 0.444 | 0.382 | 0.288 | 0.663 | 0.445 | 0.324 | 0.232 | |
| Mays 21 Ri Wuniu early | 0.417 | 0.311 | 0.197 | 0.148 | 0.423 | 0.290 | 0.199 | 0.167 | 0.113 |
| Agricultural drought resisting on May 26 | 0.478 | 0.401 | 0.286 | 0.231 | 0.284 | 0.200 | 0.188 | 0.095 | |
| May 26 Dragon Well tea 43 | 0.488 | 0.370 | 0.238 | 0.201 | 0.418 | 0.321 | 0.223 | 0.181 | 0.097 |
| Mays 26 Ri Pingyangte early | 0.453 | 0.464 | 0.252 | 0.209 | 0.349 | 0.246 | 0.202 | 0.0726 | |
| Zhejiang farming 113 on May 29 | 0.416 | 0.332 | 0.198 | 0.138 | 0.369 | 0.259 | 0.208 | 0.141 | 0.073 |
| May 19 easypro tea early | 0.448 | 0.359 | 0.198 | 0.179 | 0.414 | 0.309 | 0.213 | 0.182 | 0.012 |
| Mays 30 Ri Wuniu early | 0.406 | 0.307 | 0.198 | 0.178 | 0.392 | 0.268 | 0.215 | 0.011 | |
| May 30 Fuyun No.6 | 0.471 | 0.396 | 0.245 | 0.193 | 0.415 | 0.297 | 0.225 | 0.178 | 0.013 |
| June 3 Folium Ilicis | 0.436 | 0.364 | 0.268 | 0.195 | 0.456 | 0.343 | 0.239 | 0.204 | 0.012 |
| June 3, Mount Huang was early special | 0.640 | 0.445 | 0.309 | 0.269 | 0.509 | 0.350 | 0.250 | 0.209 | 0.147 |
| June 3 state of riding | 0.528 | 0.359 | 0.241 | 0.207 | 0.432 | 0.327 | 0.260 | 0.219 | 0.011 |
There is tangible corresponding relation in data between quality of fresh tea leaf raw material and the quality of fresh tea leaf raw material coefficient as can be seen from table, and quality of fresh tea leaf raw material is high more, and quality coefficient is big more.To a bud four leaves, leaf quality descends gradually from a bud one leaf, and quality coefficient also obviously reduces; From first leaf to the, four leaves, arrive stalk again, the raw material quality reduces gradually, and quality coefficient also obviously descends.In addition, it is generally acknowledged that the intact bud-leaf quality of same degree of ripeness is higher than monolithic and stalk, in quality coefficient, also obtained good embodiment.
For same tea tree breed, same tea was plucked more early in season, and quality is high more.Farming on May 20 is anti-in the table early compares with the anti-raw material early of farming on May 26, and quality coefficient is obviously higher; Different tea are newly sprouted the raw material that the tender tip quality that will be higher than a later stage in tea season harvesting in season, and the special raw material quality coefficient early in Mount Huang on June 3 summer tea initial stage is higher than the special morning of Mount Huang on May 20 of spring tea later stage harvesting, fits like a glove with actual conditions.
Embodiment
The method that quality of fresh tea leaf raw material is estimated: filter out in the fresh tea leaf raw material three inclusions indexs of total nitrogen content, water percentage, total fiber content with tea leaf quality height correlation by chemical method, as the evaluation basis of tea leaf quality.
Multiply by bright leaf water percentage with bright leaf total nitrogen content, remove bright leaf total fiber content, promptly get the coefficient that quality of fresh tea leaf raw material is estimated.
The quality of fresh tea leaf raw material coefficient is big more, and quality grade is high more.
According to the size of survey quality of fresh tea leaf raw material evaluation coefficient, can determine the quality of the bright leaf of tea, divide the grade of the bright leaf of tea; The reference mass coefficient can be determined suitable system product type and specification; Processing enterprise behind the coefficient that proposes to fix a price, can purchase the foundation of price according to raw material supply situation then and takeover time as fresh tea leaf raw material.
Claims (1)
1, the method estimated of a kind of quality of fresh tea leaf raw material is characterized in that: with in the fresh tea leaf raw material with three inclusions indexs of water percentage, total fiber content, total nitrogen content of tea leaf quality height correlation evaluation basis as the tea leaf quality; The coefficient of establishing the quality of fresh tea leaf raw material evaluation is: the product of bright leaf total nitrogen content and bright leaf water percentage is divided by bright leaf total fiber content.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102507495A (en) * | 2011-11-23 | 2012-06-20 | 浙江大学 | Method for rapidly and nondestructively detecting green tea water content based on wavelet transformation |
| CN106706559A (en) * | 2017-03-03 | 2017-05-24 | 上海事凡物联网科技有限公司 | Method, system and server for measuring moisture content of fallen leaves |
| CN112014132A (en) * | 2020-03-20 | 2020-12-01 | 日照市农业机械化技术推广服务站 | Test evaluation method of northern tea leaf picking machine |
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2009
- 2009-03-26 CN CNA2009101164154A patent/CN101598714A/en active Pending
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| CN102507495A (en) * | 2011-11-23 | 2012-06-20 | 浙江大学 | Method for rapidly and nondestructively detecting green tea water content based on wavelet transformation |
| CN102507495B (en) * | 2011-11-23 | 2013-10-23 | 浙江大学 | Method for rapidly and nondestructively detecting green tea water content based on wavelet transformation |
| CN106706559A (en) * | 2017-03-03 | 2017-05-24 | 上海事凡物联网科技有限公司 | Method, system and server for measuring moisture content of fallen leaves |
| CN106706559B (en) * | 2017-03-03 | 2019-06-18 | 上海事凡物联网科技有限公司 | Measurement method, system and the server of fallen leaves moisture content |
| CN112014132A (en) * | 2020-03-20 | 2020-12-01 | 日照市农业机械化技术推广服务站 | Test evaluation method of northern tea leaf picking machine |
| CN112014132B (en) * | 2020-03-20 | 2022-05-17 | 日照市农业机械化技术推广服务站 | Test evaluation method of northern tea leaf picking machine |
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Application publication date: 20091209 |