CN103245618B - A kind of fast non-destructive detection method of organic cured tobacco leaf degree of ripeness - Google Patents
A kind of fast non-destructive detection method of organic cured tobacco leaf degree of ripeness Download PDFInfo
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Abstract
A kind of fast non-destructive detection method of organic cured tobacco leaf degree of ripeness, the method is before organic tobacco leaf normal mature is gathered, Stochastic choice 10 ~ 20 strain cigarette from the vega that transplanting time is consistent with cultivation management measure, middle part (from the bottom up) 1 ~ 3 tobacco leaf L*a*b* is measured respectively or/and L*C*h* color value, according to this value determination Maturity of Tobacco Leaf with portable colour difference meter.Method of the present invention solves a difficult problem for never clear and definite index and assay method in the ripe recovery process of organic flue-cured tobacco.The method index is clear and definite, has objective judge index, can quantize mature indicator, can reduce the error that vision causes, and easily operation and grasp.Adopt the method to judge organic Maturity of Tobacco Leaf, tobacco leaf color uniformity after picking and roasting, Quality advance, colourity is good, fragrance foot.Be applicable to tobacco planting and processing industry.
Description
Technical field
The present invention relates to the method by utilizing color to change detection material, the particularly detection method of organic cured tobacco leaf maturity.
Background technology
First early 1990s proposes the concept of organic tobacco leaf abroad.At present, organic leaf tobacco production is mainly distributed in U.S., Canada, Brazil, De Deng state.2008, Yunnan, Guizhou started to attempt the organic tobacco leaf of plantation; 2009, part organic tobacco leaf planting area in Yunnan-Guizhou obtained Organic certification; Within 2010, " organic tobacco leaf " provincial standard is issued in Yunnan.At present, domestic and international organic tobacco is produced in nursery and facility (CN101779593A, a kind of method for culturing seedlings of organic tobacco seedling, China; CN202197608U, organic floating plate for growing seedlings of tobacco, China), field planting management (CN102812832A, a kind of cultural method of organic flue-cured tobacco, China; CN102093095A, a kind of biological organic fertilizer special for organic tobacco leaves and preparation method thereof, China; CN102630478A, a kind of organic tobacco field planting and field management method, China; US74750809A, ANTAGONISTICBACTERIAFORPREVENTINGANDELIMINATINGTHEBACTER IALWILTOFCONTINUOUSCROPPINGTOBACCOANDTHEIRMICROBIALORGAN ICFERTILIZER, the U.S.), baking (CN102640977A, effectively can keep a baking method for organic quality of tobacco, China; CN102823933A, a kind of baking of flue-cured tobacco method of organic tobacco leaf, China) etc. aspect all have corresponding operating specification.
Degree of ripeness is the central factor of quality of tobacco, and field harvest maturity is the basis of cured tobacco leaf degree of ripeness, is that baking process and Cigarette processing technological measure cannot make up.But current domestic and international organic tobacco leaf maturation is gathered and is still based upon in conventional tobacco harvesting standard, does not have clear and definite quantizating index and detection method.The patent relating to the detection of tobacco leaf maturity in Chinese patent database only has No. CN202110131U " device for testing tobacco maturity " and No. CN102323221A " Maturity of Tobacco Leaf detection method and pick-up unit " two pieces, disclosed detection method and device, it is the image that collecting unit obtains tobacco leaf to be detected, and the image setting up or be converted to hsv color pattern is processed to this image, and obtain H, S color component value of image; The degree of ripeness grade MD of tobacco leaf to be detected is gone out according to given calculated with mathematical model.Be not difficult to find out, this method needs to draw great amount of images, and workload is large, and still has the collimation error.Leaf color is one of important indicator judging tobacco leaf mature characteristic, but is subject to the impact of people's subjective factor.Therefore, only rely on the visual determination Maturity of Tobacco Leaf of people, there is instability problem to a certain extent.
Summary of the invention
The object of the present invention is to provide a kind of fast non-destructive detection method of organic cured tobacco leaf degree of ripeness, adopt portable colour difference meter, detect land for growing field crops organic flue-cured tobacco ripening period tobacco leaf color value change, according to the variation range of differing maturity tobacco leaf color value, quantize tobacco leaf picking degree of ripeness.
To achieve these goals, the method that inventor provides is before organic tobacco leaf normal mature is gathered, Stochastic choice 10 ~ 20 strain cigarette from the vega that transplanting time is consistent with cultivation management measure, use portable colour difference meter, measure the L*a*b* of middle leaf 1 ~ 3 tobacco leaf from the bottom up or/and L*C*h* color value, according to color value determination Maturity of Tobacco Leaf; Specific practice is:
L*a*b* color value is used to judge organic Maturity of Tobacco Leaf: first, by correction plate correcting chromatic aberration meter, the indexs of correlation such as colour measurement L*a*b* to be set, then to measure tobacco leaf; When 1 ~ 3 organic tobacco leaf color value L* measured is between 62 ~ 74, a* value, between-7 ~ 0, when b* value is between 50 ~ 62, is then defined as detection tobacco leaf ripe, can a picking and roasting;
L*C*h* color value is used to judge organic Maturity of Tobacco Leaf: first, to be rectified an instrument by correction plate, the indexs of correlation such as colour measurement L*C*h* are set, then measure tobacco leaf; When 1 ~ 3 organic tobacco leaf color value L* measured is between 62 ~ 74, C* value, between 50 ~ 62, when h* value is between 85 ~ 100, is then defined as detection tobacco leaf ripe, can a picking and roasting;
In described L*a*b* color value, L* is brightness value: from black in vain, represent brightness, 0 ~ 100; A* is red scale value: from green to red ,-A ~+A; B* is yellow value degree: from indigo plant to Huang ,-B ~+B; In described L*C*h* color value, L* is brightness value: from black in vain, represent brightness, 0 ~ 100; C* represents chroma; H* represents hue angle.
The model of above-mentioned portable colour difference meter is CR-410.
In said determination operation, every leaf should select detection 6 points, and namely the leaf tip of master pulse both sides central vane, middle part and leaf base, avoid the main offshoot of blade as far as possible, then get its mean value.
Inventor points out: above-mentioned L*a*b* and L*C*h* color value can judge organic Maturity of Tobacco Leaf simultaneously, also singlely can carry out detection and judge; The color value of above-mentioned Mature Tobacco Leaves is through the empirical value of several expert's long-term practice.
Method of the present invention solves a difficult problem for never clear and definite index and assay method in the ripe recovery process of organic flue-cured tobacco.The method index is clear and definite, has objective judge index, can quantize mature indicator, can reduce the error that vision causes, and easily operation and grasp.Adopt the method to judge organic Maturity of Tobacco Leaf, tobacco leaf color uniformity after picking and roasting, Quality advance, colourity is good, fragrance foot.Be applicable to tobacco planting and processing industry.
Accompanying drawing explanation
Fig. 1 is that colour difference meter measures organic tobacco leaf site schematic diagram, and wherein stain is test point.
Fig. 2 is L*a*b* color value and organic tobacco leaf maturity graph of a relation.
Fig. 3 is L*C*h* color value and organic tobacco leaf maturity graph of a relation.
Embodiment
embodiment1
2011-2012 has carried out the ripe picking and roasting test of first time organic flue-cured tobacco in Fuquan baking of flue-cured tobacco test base, Guizhou Province Tabacco Science and Technology Institute.In order to accurately determine organic tobacco leaf maturity, specifying tobacco leaf ripeness standard, Stochastic choice 20 strain cigarette in the vega that transplanting time is consistent with cultivation management measure, measuring middle part (from the bottom up) 1 ~ 3 tobacco leaf L*a*b* color value with portable colour difference meter.Every leaf should select detection 6 points, and namely the leaf tip of master pulse both sides central vane, middle part and leaf base, avoid the main offshoot of blade as far as possible, then get its mean value.The L*a*b* mean value of the 1st leaf is respectively: 67.57 ,-4.64,57.08; The L*a*b* mean value of the 2nd leaf is respectively: 67.22 ,-5.24,56.76; The L*a*b* mean value of the 3rd leaf is respectively: 67.12 ,-5.31,56.72, all within optimum range, shows to detect tobacco leaf ripe, can a picking and roasting.Now, 1 ~ 3 leaf of gathering toasts.Adopt bake mode in contrast with the organic Maturity of Tobacco Leaf of routine, result shows, adopts the method to carry out organic tobacco leaf of picking and roasting, and the first-class cigarette of cured tobacco leaf increases by 8.24%, and average price improves 1.32 yuan/kg, and tobacco incense is jealous to be significantly improved.
embodiment2
2011-2012 has carried out the ripe picking and roasting test of the organic flue-cured tobacco of second time in Fuquan flue-cured tobacco test base, Guizhou Province Tabacco Science and Technology Institute.In order to accurately judge organic tobacco leaf maturity, specifying tobacco leaf ripeness standard, Stochastic choice 20 strain cigarette in the vega that transplanting time is consistent with cultivation management measure, measuring middle part (from the bottom up) 1 ~ 3 tobacco leaf L*C*h* color value with portable colour difference meter.Every leaf should select detection 6 points, and namely the leaf tip of master pulse both sides central vane, middle part and leaf base, avoid the main offshoot of blade as far as possible, then get its mean value.The L*C*h* mean value of the 1st leaf is respectively: 67.81,57.32,96.74; The L*C*h* mean value of the 2nd leaf is respectively: 66.25,56.75,94.8; The L*C*h* mean value of the 3rd leaf is respectively: 65.63,56.15,92.87, all within optimum range, shows to detect tobacco leaf ripe, can a picking and roasting.Now, adopt bake mode in contrast with the organic Maturity of Tobacco Leaf of routine, result shows, adopts the method to carry out organic tobacco leaf of picking and roasting, and the first-class cigarette of cured tobacco leaf increases by 5.18%, and average price improves 0.62 yuan/kg, and tobacco incense is jealous to be significantly improved.
embodiment3
2011-2012 has carried out the ripe picking and roasting test of third time organic flue-cured tobacco in Fuquan flue-cured tobacco test base, Guizhou Province Tabacco Science and Technology Institute.In order to accurately determine organic tobacco leaf maturity, specifying tobacco leaf ripeness standard, Stochastic choice 20 strain cigarette in the vega that transplanting time is consistent with cultivation management measure, measuring middle part (from the bottom up) 1 ~ 3 tobacco leaf L*a*b*C*h* color value with portable colour difference meter.Every leaf should select detection 6 points, and namely the leaf tip of master pulse both sides central vane, middle part and leaf base, avoid the main offshoot of blade as far as possible, then get its mean value.The L*a*b*C*h* mean value of the 1st leaf is respectively: 73.59 ,-0.45,61.15,61.19,90.15; The L*a*b*C*h* mean value of the 2nd leaf is respectively: 72.45 ,-2.11,58.73,58.81,97.19; The L*a*b*C*h* mean value of the 3rd leaf is respectively: 70.13 ,-0.14,51.81,51.81,99.95, all within optimum range, shows to detect tobacco leaf ripe, can a picking and roasting.Now, adopt bake mode in contrast with the organic Maturity of Tobacco Leaf of routine, result shows, adopts the method to carry out organic tobacco leaf of picking and roasting, and the first-class cigarette of cured tobacco leaf increases by 3.26%, and average price improves 0.48 yuan/kg, and tobacco incense is jealous to be significantly improved.
Claims (3)
1. the fast non-destructive detection method of an organic cured tobacco leaf degree of ripeness, it is characterized in that before organic tobacco leaf normal mature is gathered, Stochastic choice 10 ~ 20 strain cigarette from the vega that transplanting time is consistent with cultivation management measure, utilize portable colour difference meter, in the middle part of measuring from the bottom up, the L*a*b* of 1 ~ 3 tobacco leaf is or/and L*C*h* color value, according to color value determination Maturity of Tobacco Leaf; Specific practice is:
L*a*b* color value is used to judge organic Maturity of Tobacco Leaf: first, by correction plate correcting chromatic aberration meter, colour measurement L*a*b* index of correlation to be set, then to measure tobacco leaf; When 1 ~ 3 organic tobacco leaf color value L* measured is between 62 ~ 74, a* value, between-7 ~ 0, when b* value is between 50 ~ 62, is then defined as detection tobacco leaf ripe, can a picking and roasting;
L*C*h* color value is used to judge organic Maturity of Tobacco Leaf: first, to be rectified an instrument by correction plate, the index of correlation of colour measurement L*C*h* is set, then measures tobacco leaf; When 1 ~ 3 organic tobacco leaf color value L* measured is between 62 ~ 74, C* value, between 50 ~ 62, when h* value is between 85 ~ 100, is then defined as detection tobacco leaf ripe, can a picking and roasting;
In described L*a*b* color value, L* is brightness value: from black in vain, represent brightness, 0 ~ 100; A* is red scale value: from green to red ,-A ~+A; B* is yellow value degree: from indigo plant to Huang ,-B ~+B; In described L*C*h* color value, L* is brightness value: from black in vain, represent brightness, 0 ~ 100; C* represents chroma; H* represents hue angle.
2. the method for claim 1, is characterized in that the model of described portable colour difference meter is CR-410.
3. the method for claim 1, is characterized in that in described measurement operation, and every leaf should select detection 6 points, and namely the leaf tip of master pulse both sides central vane, middle part and leaf base, avoid the main offshoot of blade, then get its mean value.
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| CN103499526A (en) * | 2013-09-29 | 2014-01-08 | 贵州省烟草科学研究院 | Method for judging tobacco leaf yellowing degree and baking progress in tobacco backing and yellowing stage |
| CN103777524A (en) * | 2014-01-20 | 2014-05-07 | 江苏大学 | Method and device for controlling black tea moderate fermentation based on visible spectrum technology |
| CN108120802B (en) * | 2017-12-19 | 2020-12-08 | 广西中烟工业有限责任公司 | Quantitative prediction method for flue-cured tobacco maturity field investigation for determining appropriate harvesting period of tobacco leaves |
| CN109540894A (en) * | 2018-12-17 | 2019-03-29 | 云南省烟草公司红河州公司 | A kind of lossless rapid detection method of cured tobacco leaf maturity |
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| CN101482493A (en) * | 2009-02-17 | 2009-07-15 | 云南昆船瑞升科技有限公司 | Appearance color detection method for reconstituted tobacco by papermaking method |
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| CN101482493A (en) * | 2009-02-17 | 2009-07-15 | 云南昆船瑞升科技有限公司 | Appearance color detection method for reconstituted tobacco by papermaking method |
| CN102323221A (en) * | 2011-05-31 | 2012-01-18 | 河南农业大学 | Tobacco maturity detection method and device |
| JP2013068457A (en) * | 2011-09-21 | 2013-04-18 | Jsv Co Ltd | Rgb skin color analyzer for animal or plant |
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