CN100451617C - Method for detecting tobacco leaf chemical ingredient adopting near infrared light - Google Patents
Method for detecting tobacco leaf chemical ingredient adopting near infrared light Download PDFInfo
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- CN100451617C CN100451617C CNB2006100433997A CN200610043399A CN100451617C CN 100451617 C CN100451617 C CN 100451617C CN B2006100433997 A CNB2006100433997 A CN B2006100433997A CN 200610043399 A CN200610043399 A CN 200610043399A CN 100451617 C CN100451617 C CN 100451617C
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Abstract
The present invention discloses a method for detecting the chemical ingredients of tobacco leaves by adopting near infrared light, which solves the problems of high cost, long period, etc. in the analysis of the chemical ingredients of tobacco leaves in the prior art. The present invention has the advantages of simplicity, feasibility, quickness, convenience and effective analysis of the chemical ingredients of tobacco leaves. The method comprises the following steps: a, an entire tobacco leaf is taken and unfolded flat; b, at least two points on the tobacco leaf are selected for detection with a near infrared device so as to obtain the near infrared charts of the ingredients of the tobacco leaf; c, corresponding mathematical models of the near infrared chart of each ingredient and the result of each ingredient obtained through conventional chemical analysis are respectively established, and then, the mathematical models of the near infrared analysis of the tobacco leaf are formed and stored in a memory; d, an entire tobacco leaf unfolded flat is detected according to the positions mentioned in step b by using the near infrared device on a purchasing site, and the detection results are compared with the mathematical models of the near infrared analysis of the tobacco leaf, which are stored in the memory, to determine the quality of the tobacco leaf.
Description
Technical field
The present invention relates to the method that a kind of tobacco leaf chemical composition detects, relate in particular to a kind of method that adopts near infrared light to detect tobacco leaf chemical ingredient.
Background technology
As everyone knows, the stable control of cigarette quality is the focus of tobacco enterprise.Tobacco leaf is to influence the stay-in-grade key factor of cigarette product, facts have proved, strengthen tobacco leaf chemical composition and detect frequency and analysis dynamics, improve tobacco leaf chemical composition stability, and be to guarantee the stable effective way of quality of tobacco.Tobacco leaf chemical composition detects the ALPKEM of employing fully-automatic analyzers more at present, and speed is slower, and expense is higher, is difficult to satisfy the needs of express-analysis.
Near infrared (NIRS) only refer between visible light and in electromagnetic wave between infrared, its wavelength coverage is 780-2526nm.Molecule mainly is made up of with the frequency multiplication absorption the sum of fundamental frequencies absorption of groups such as C-H, O-H, N-H, C-O in the absorption of near-infrared region, can obtain organic bulk information, is fit to the analysis of complicated natural products.Along with the progress of stoichiometric chemistry and the fast development of instrument hardware and computer hardware, near-infrared spectrum technique develops independently analytical technology of Cheng Yimen rapidly.
In recent years, the main method that near infrared technology is applied to the tobacco component analysis is: earlier tobacco leaf drying is ground to form 40 orders or 60 order offals, get spectrogram with near-infrared analyzer scanning offal, simultaneously this offal is done chemical analysis, set up model according to a plurality of tobacco sample spectrograms and chemical constitution, the offal of other tobacco leaves computerized near infrared scan that just can pass through is obtained spectrogram then, by Model Calculation sample chemical component content.But the preparation of powder is more time-consuming at present, and a sample is pulverized and ground through oven dry, makes 40 orders or 60 order samples, approximately needs 3 hours, can not satisfy the on-the-spot needs that detect of tobacco leaf buying, can not give full play to the NIR technology advantage.
Summary of the invention
Purpose of the present invention is exactly in order to solve problems such as the cost height, the cycle that exist when existing tobacco leaf chemical ingredient is analyzed be long, provide a kind of simple and easy to do, efficient and convenient, the employing near infrared light that can effectively analyze tobacco leaf chemical ingredient detects the method for tobacco leaf chemical ingredient.
For achieving the above object, the present invention has adopted following technical scheme: a kind of method that adopts near infrared light to detect tobacco leaf chemical ingredient, its step be, a, round the sheet tobacco leaf and it is launched smooth good; B, employing nir instrument are taken to few two points and detect on tobacco leaf, obtain the near infrared collection of illustrative plates of tobacco leaf ingredient; C, each composition result that each composition near infrared collection of illustrative plates of gained and conventional chemical are analyzed gained set up corresponding mathematical model respectively, the tobacco leaf near-infrared analysis mathematical model of formation, and it is deposited in the storer; D, smooth good full wafer tobacco leaf is detected the position among the b set by step, the tobacco leaf near-infrared analysis mathematical model in the testing result storer is compared, determine quality of tobacco at the on-the-spot near infrared spectrometer that utilizes of purchase.
Among the described step b, nir instrument is got 2 or 3 or 4 or 5 or 6 or 7 or 8 or 9 or 10 or 11 points on tobacco leaf.
Among the described step b, when nir instrument is got some tobacco leaf is divided into leaf tip, leaf central part, three zones of leaf base and detects on tobacco leaf.
Among the described step b, when nir instrument is got in the tobacco leaf upper and lower, count and respectively press triangle when being three and distribute, count when being less than three, determine arbitrarily; When getting at tobacco leaf middle part, respectively press the rhombus distribution when counting, count and to arrange arbitrarily when being less than 4 to 4-5.
Described tobacco leaf ingredient comprises nicotine, total reducing sugar, reducing sugar, total nitrogen, volatilization alkali, potassium and chlorine.
The present invention adopts near infrared spectrometer tobacco leaf powder not being broken under the situation of offal, by tobacco leaf being divided into different zones, then to each zone counting and sample on request respectively, form the near infrared spectrum of each composition, each component target that utilizes conventional method to record then, infrared spectrum is set up mathematical model with it, deposit in the storer then.When detecting at the scene, directly utilize near infrared spectrometer by the sampling rule sampling after, by with storer in mathematical model compare, can determine whether each composition in the tobacco leaf meets the requirements, thereby determine the quality of tobacco situation.
Beneficial effect of the present invention is: method is simple, is suitable for on-the-spot the use, realizes the analysis quick and precisely to tobacco leaf chemical composition, for tobacco leaf buying, Recipe leaf beating, tobacco leaf maintenance and product development and maintenance provide the support of rapid technology data.
Description of drawings
Distribution schematic diagram when Fig. 1 is 11 for collection point of the present invention;
Distribution schematic diagram when Fig. 2 is ten for collection point of the present invention;
Distribution schematic diagram when Fig. 3 is nine for collection point of the present invention;
Distribution schematic diagram when Fig. 4 is eight for collection point of the present invention;
Distribution schematic diagram when Fig. 5 is seven for collection point of the present invention;
Distribution schematic diagram when Fig. 6 is six for collection point of the present invention;
Distribution schematic diagram when Fig. 7 is five for collection point of the present invention;
Distribution schematic diagram when Fig. 8 is four for collection point of the present invention;
Distribution schematic diagram when Fig. 9 is three for collection point of the present invention;
Distribution schematic diagram when Figure 10 is two for collection point of the present invention;
Distribution schematic diagram when Figure 11 is one for collection point of the present invention;
The nicotine data plot of Figure 12 for adopting the inventive method to record;
The total reducing sugar data plot of Figure 13 for adopting the inventive method to record;
The reducing sugar data plot of Figure 14 for adopting the inventive method to record;
The chlorine data plot of Figure 15 for adopting the inventive method to record;
The potassium data plot of Figure 16 for adopting the inventive method to record.
Embodiment
Embodiment one:
At first the tobacco leaf of full wafer is paved, nir instrument is got three points that are in triangular distribution on tobacco leaf top, get three in the tobacco leaf bottom and be in triangular distribution a little, get five points of diamondwise at the tobacco leaf middle part; Nir instrument comprises that with each composition of tobacco leaf that collects nicotine, total reducing sugar, reducing sugar, total nitrogen, volatilization alkali, potassium and chlorine etc. form near infrared spectrum separately; The near infrared spectrum of each composition is set up mathematical model with each composition of tobacco leaf that detects with routine techniques, form tobacco leaf near-infrared analysis mathematical model, and it is deposited in the storer; When purchasing at the scene, utilize near infrared spectrometer to the full wafer tobacco leaf paved by tobacco leaf being divided into three parts, triangularity 3 points are got in its middle and upper part, triangularity 3 points are got in the bottom, diamondwise 5 points are got at the middle part, as shown in Figure 1, the tobacco leaf near-infrared analysis mathematical model in detected near infrared spectrum and the storer is compared, can determine the quality of tobacco leaf.
Embodiment two:
In the present embodiment, when tobacco leaf is got, as shown in Figure 2, get the Atria point according to top, the Atria point is got in the bottom, and the middle part is that the mode on four summits of rhombus is sampled, and all the other methods are identical with embodiment one.
Embodiment three:
In the present embodiment, when tobacco leaf is got, as shown in Figure 3, get the Atria point according to top, the Atria point is got in the bottom, and the middle part is got 3 mode arbitrarily and sampled, and all the other methods are identical with embodiment one.
Embodiment four:
In the present embodiment, when tobacco leaf is got, as shown in Figure 4, get the Atria point according to top, the Atria point is got in the bottom, and the middle part is got 2 mode arbitrarily and sampled, and all the other methods are identical with embodiment one.
Embodiment five:
In the present embodiment, when tobacco leaf is got, as shown in Figure 5, appoint according to top and to get 3 points, the bottom is appointed and is got 3 points, and the middle part is got the mode of any arbitrarily and sampled, and all the other methods are identical with embodiment one.
Embodiment six:
In the present embodiment, when tobacco leaf is got, as shown in Figure 6, appoint according to top and to get 2 points, the bottom is appointed and is got 2 points, and the middle part is got 2 mode arbitrarily and sampled, and all the other methods are identical with embodiment one.
Embodiment seven:
In the present embodiment, when tobacco leaf is got, as shown in Figure 7, appoint according to top and to get 2 points, the bottom is appointed and is got 2 points, and the middle part is got the mode of any arbitrarily and sampled, and all the other methods are identical with embodiment one.
Embodiment eight:
In the present embodiment, when tobacco leaf is got, as shown in Figure 8, appoint according to top and to get a bit, the bottom is appointed and is got a bit, and the middle part is got 2 mode arbitrarily and sampled, and all the other methods are identical with embodiment one.
Embodiment nine:
In the present embodiment, when tobacco leaf is got, as shown in Figure 9, appoint according to top and to get a bit, the bottom is appointed and is got a bit, and the middle part is got the mode of any arbitrarily and sampled, and all the other methods are identical with embodiment one.
Embodiment ten:
In the present embodiment, when tobacco leaf was got, as shown in figure 10, the middle part was got 2 mode arbitrarily and is sampled, and all the other methods are identical with embodiment one.
Embodiment 11:
In the present embodiment, when tobacco leaf was got, as shown in figure 11, the middle part was got the mode of any arbitrarily and is sampled, and all the other methods are identical with embodiment one.
Among Figure 12-16, provided the data profile that adopts the detected nicotine of the inventive method, total reducing sugar, reducing sugar, chlorine and potassium.
Step has and uses near infrared spectrometer twice tobacco leaf is detected among the present invention, is for the first time for setting up tobacco leaf near-infrared analysis mathematical model, set up can be after this mathematical model after detection benchmark is provided; Be when actual detected, tobacco leaf to be got point sampling for the second time.When detecting for this twice sampling count that it doesn't matter, promptly can adopt for the first time any one quantity sampling in 1-10 the point, also be for the second time in 1-10 is put, to choose one arbitrarily to get final product, but counting of the best is 10 check points.Certainly of the present invention counting is not limited to 1-10 sampled point, being below or above these counts and the method that adopts near infrared spectrometer that tobacco leaf chemical composition is analyzed does not all exceed technical scope of the present invention, simultaneously, be not limited to half of blade when getting, can on whole blade, get a little.
Claims (3)
1, a kind of method that adopts near infrared light to detect tobacco leaf chemical ingredient is characterized in that: its step is,
A, round the sheet tobacco leaf and it is launched smooth good;
B, employing nir instrument are got 3 or 4 or 5 or 6 or 7 or 8 or 9 or 10 or 11 points and are detected on tobacco leaf, obtain the near infrared collection of illustrative plates of tobacco leaf ingredient;
When nir instrument is got on tobacco leaf tobacco leaf being divided into leaf tip, leaf central part, three zones of leaf base detects;
C, each composition result that each composition near infrared collection of illustrative plates of gained and conventional chemical are analyzed gained set up corresponding mathematical model respectively, form tobacco leaf near-infrared analysis mathematical model, and it is deposited in the storer;
D, smooth good full wafer tobacco leaf is detected the position among the b set by step, the tobacco leaf near-infrared analysis mathematical model in testing result and the storer is compared, determine quality of tobacco at the on-the-spot near infrared spectrometer that utilizes of purchase.
2, employing near infrared light according to claim 1 detects the method for tobacco leaf chemical ingredient, it is characterized in that: among the described step b, when nir instrument is got in the tobacco leaf upper and lower, count and respectively press triangle when being three and distribute, count when being less than three, determine arbitrarily; When getting at tobacco leaf middle part, respectively press the rhombus distribution when counting, count and to arrange arbitrarily when being less than 4 to 4-5.
3, employing near infrared light according to claim 1 detects the method for tobacco leaf chemical ingredient, and it is characterized in that: described tobacco leaf ingredient comprises nicotine, total reducing sugar, reducing sugar, total nitrogen, volatilization alkali, potassium and chlorine.
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| Application Number | Priority Date | Filing Date | Title |
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| CNB2006100433997A CN100451617C (en) | 2006-03-30 | 2006-03-30 | Method for detecting tobacco leaf chemical ingredient adopting near infrared light |
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| CNB2006100433997A CN100451617C (en) | 2006-03-30 | 2006-03-30 | Method for detecting tobacco leaf chemical ingredient adopting near infrared light |
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| CN1828272A CN1828272A (en) | 2006-09-06 |
| CN100451617C true CN100451617C (en) | 2009-01-14 |
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Families Citing this family (15)
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| CN102313708A (en) * | 2010-06-29 | 2012-01-11 | 北京市农林科学院 | Method for quantitatively detecting capsaicine |
| CN102590211B (en) * | 2011-01-11 | 2014-10-22 | 郑州大学 | Method for utilizing spectral and image characteristics to grade tobacco leaves |
| CN102253192B (en) * | 2011-05-06 | 2013-10-09 | 华环国际烟草有限公司 | Quality detection method for tobacco leaves and application thereof |
| CN103120361B (en) * | 2012-10-16 | 2016-04-13 | 红塔烟草(集团)有限责任公司 | A kind of cutting tobacco leaves method based on Distribution Law of Chemical Composition |
| CN103048290A (en) * | 2013-01-07 | 2013-04-17 | 中国农业科学院烟草研究所 | Method for detecting filling value of cut tobacco |
| CN103622148B (en) * | 2013-12-11 | 2015-11-18 | 山东中烟工业有限责任公司 | The production stock method of a kind of cigarette chemical composition equalization |
| CN104634755A (en) * | 2015-02-17 | 2015-05-20 | 福建省龙岩金叶复烤有限责任公司 | Method for detecting chemical components of smoke box |
| CN104792786A (en) * | 2015-05-18 | 2015-07-22 | 上海烟草集团有限责任公司 | Tobacco raw material quality control method |
| CN105043872A (en) * | 2015-07-14 | 2015-11-11 | 河南科技大学 | Test board for tensile characteristic of flue-cured tobacco leaf |
| CN105974058B (en) * | 2016-05-01 | 2018-08-07 | 上海大学 | The method of quick detection preservative water preperation based on electronic nose-artificial neural network |
| CN106053383A (en) * | 2016-06-27 | 2016-10-26 | 四川威斯派克科技有限公司 | Near-infrared online detection method for tobacco processing process |
| CN106404699A (en) * | 2016-12-02 | 2017-02-15 | 南京农业大学 | Nondestructive measurement method for contents of nitrogen elements of pear tree leaf blades |
| CN106442365B (en) * | 2016-12-02 | 2018-10-19 | 南京农业大学 | A kind of pear tree precise nitrogen application |
| CN107101971A (en) * | 2017-05-22 | 2017-08-29 | 上海创和亿电子科技发展有限公司 | Processing method, system and the electronic equipment of tobacco leaf attribute |
| CN113804644A (en) * | 2021-09-18 | 2021-12-17 | 贵州省烟草科学研究院 | Tobacco leaf curing process chemical index prediction method based on near infrared spectrum |
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Owner name: SHANDONG ZHONGYAN INDUSTRY CO., LTD. Free format text: FORMER OWNER: JIANGJUN TOBACCO GROUP CO. LTD. Effective date: 20070706 |
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Effective date of registration: 20070706 Address after: 250100 Shandong city of Ji'nan Province East Ring Road No. 431 Applicant after: China Tobacco Shandong Industrial Corporation Address before: Licheng District 250100 Shandong city of Ji'nan Province General Road No. 80 Applicant before: Jiangjun Tobacco Group Co., Ltd. |
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