CN101526471B - Method for detecting essence for tobacco - Google Patents
Method for detecting essence for tobacco Download PDFInfo
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- CN101526471B CN101526471B CN2009100590309A CN200910059030A CN101526471B CN 101526471 B CN101526471 B CN 101526471B CN 2009100590309 A CN2009100590309 A CN 2009100590309A CN 200910059030 A CN200910059030 A CN 200910059030A CN 101526471 B CN101526471 B CN 101526471B
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Abstract
The invention discloses a method for detecting essence for tobacco. The method comprises the following steps: collecting an ultraviolet absorption spectrogram of an essence sample for tobacco to be detected; reconstructing an ultraviolet finger print by S-G smooth combined first derivative; establishing a main ingredient analysis model of the ultraviolet finger print of the essence sample for tobacco to be detected; selecting the upper control limit UCL which is the maximum value of Mahalanobis distance among the ultraviolet finger print main ingredient analysis model no less than 5 qualifiedessence sample for tobacco; comparing the sample to be detected with the value of the upper control limit UCL to determine whether the essence sample for tobacco is qualified or not. The method overcomes the defects of more detecting instruments, complicated detecting steps and field quick detection unavailability in the prior art, provides the method for detecting the essence for tobacco which reflects the whole character of the essence for tobacco, uses fewer detecting instruments, has simple method, can perform field quick detection, and can be widely applied to tobacco manufacture industry.
Description
Technical field
The present invention relates to the detection method of auxiliary element, be specifically related to the detection method of flavouring essence for tobacco.
Background technology
Flavouring essence for tobacco is a kind of multicomponent chemical system of complexity, and is formulated by plurality of raw materials and an amount of solvent mediation, is subjected to multiple factor affecting such as raw material, processing technology, processing environment, only is difficult to its inherent quality is effectively supervised from its physical index.Essence in the cigarette produces special influence to the cigarette smell, is an important indicator of smoker's evaluation cigarette.Common way is to measure physical and chemical indexs such as acid number, relative density, refraction index and molten mixed degree to come quality monitoring according to YC/T 145-1998 industry series standard method at present.This way exists and adopts limited physical and chemical index to characterize quality, uses detecting instrument many, detects problems such as step is loaded down with trivial details, can't realize field quick detection.
Summary of the invention
The present invention has overcome the deficiencies in the prior art, and the detection method of the integral body formation that solves the reflection flavouring essence for tobacco is provided.
For solving above-mentioned technical matters, the present invention by the following technical solutions:
The detection method of flavouring essence for tobacco is characterized in that according to following steps:
(1) sets up the ultraviolet fingerprint principal component analysis model of essence sample for tobacco to be measured
Step 1 is gathered the uv absorption spectra of essence sample for tobacco to be measured;
The ultraviolet spectrogram of the essence sample for tobacco to be measured that step 2 will collect adopts S-G smoothly to be reconstructed ultraviolet fingerprint in conjunction with first order derivative;
Step 3 is set up the ultraviolet fingerprint principal component analysis model of essence sample for tobacco to be measured with the Principal Component Analysis Method in the Chemical Measurement multivariable analysis;
(2) prepare qualified data
Step 4 selects to be no less than 5 qualified after testing essence sample for tobacco;
It is the maximal value of the mahalanobis distance Mi between the ultraviolet fingerprint principal component analysis model of all qualified essence sample for tobacco that step 5 is selected upper control limit UCL;
(3) judge relatively
Mahalanobis distance Mi between the ultraviolet fingerprint principal component analysis model of step 6 calculating essence sample for tobacco to be measured and the ultraviolet fingerprint principal component analysis model of qualified essence sample for tobacco, then this essence sample for tobacco to be measured is defective greater than upper control limit UCL as if Mi, otherwise this essence sample for tobacco to be measured is qualified.
UV scanning wavelength coverage when further technical scheme is gathered the uv absorption spectra of essence sample for tobacco to be measured: 190～450nm, wavelength interval 1nm; Quartz colorimetric utensil light path: 0.1cm; Each sample scanning 15 times.
Further technical scheme steps 5 upper control limit UCL directly obtain from database.
Further after the technical scheme steps 6, the mahalanobis distance Mi value between the ultraviolet fingerprint principal component analysis model of the essence sample for tobacco to be measured of test passes is joined in the database.
Further the primary data in the technical scheme database is to select at least 5 batches of qualified essence sample for tobacco for use, carries out according to following steps:
Step 7 is gathered the uv absorption spectra of qualified essence sample for tobacco;
The spectrogram that step 8 will collect qualified essence sample for tobacco adopts S-G smoothly to be reconstructed ultraviolet fingerprint in conjunction with first order derivative;
Step 9 is set up the ultraviolet fingerprint principal component analysis model of qualified essence sample for tobacco with the Principal Component Analysis Method in the Chemical Measurement multivariable analysis;
Mahalanobis distance Mi between the ultraviolet fingerprint principal component analysis model of the qualified essence sample for tobacco of step 10 calculating;
Step 11 deposits the mahalanobis distance Mi between each qualified samples in database.
Further technical scheme steps 5 upper control limit UCL obtain according to step from qualified sample:
Step 12 is gathered the uv absorption spectra of at least 5 batches of qualified essence sample for tobacco;
The spectrogram that step 13 will collect qualified essence sample for tobacco adopts S-G smoothly to be reconstructed ultraviolet fingerprint in conjunction with first order derivative;
Step 14 is set up the finger-print principal component analysis model of qualified essence sample for tobacco with the Principal Component Analysis Method in the Chemical Measurement multivariable analysis;
Mahalanobis distance Mi between the ultraviolet fingerprint principal component analysis model of the qualified essence sample for tobacco of step 15 calculating.
Compared with prior art, the invention has the beneficial effects as follows and detect the global feature that has reflected flavouring essence for tobacco that the detecting instrument of use is few, method is simple, can field quick detection.
Embodiment
Below the present invention is further elaborated.
Select for use 6 different batches to set up standard database through the essence sample for tobacco of the sample that is up to the standards, calculate according to step 7 to step 11, obtain the mahalanobis distance Mi of the ultraviolet fingerprint principal component analysis model of all qualified essence sample for tobacco, result of calculation sees Table 1:
| The sample sequence number | S1 | S2 | S3 | S4 | S5 | S6 |
| Mahalanobis distance | 0.921 | 2.563 | 1.864 | 3.013 | 1.286 | 2.754 |
Table 1
In the selection maximal value 3.013 of all mahalanobis distance Mi as upper control limit UCL.
With 4 batches of essence sample for tobacco 1#～4# to be measured, measure according to step 1 to step 3, obtain the ultraviolet fingerprint principal component analysis model of essence sample for tobacco, the mahalanobis distance Mi of the ultraviolet fingerprint principal component analysis model of all samples in according to step 6 calculating and database, result of calculation sees Table 2:
| The sample sequence number | 1# | 2# | 3# | 4# |
| Mahalanobis distance | 2.732 | 1.923 | 0.763 | 5.012 |
Table 2
Adjudicate according to step 6, the mahalanobis distance of 1#～3# sample is all less than upper control limit UCL3.013, and the essence of 1#～3# is qualified.The mahalanobis distance of 4# is greater than upper control limit UCL3.013, and the flavouring essence for tobacco of 4# sample is defective.
The ultraviolet fingerprint principal component analysis The model calculation data of 1#～3# essence sample for tobacco are deposited into database, finish new database, use when being used for detecting from now on, new database sees Table 3:
| The sample sequence number | S1 | S2 | S3 | S4 | S5 | S6 | S7 | S8 | S9 |
| Mahalanobis distance | 0.921 | 2.563 | 1.864 | 3.013 | 1.286 | 2.754 | 2.732 | 1.923 | 0.763 |
Table 3
Claims (5)
1. the detection method of a flavouring essence for tobacco is characterized in that according to following steps:
(1) sets up the ultraviolet fingerprint principal component analysis model of essence sample for tobacco to be measured
Step 1 is gathered the uv absorption spectra of essence sample for tobacco to be measured;
The ultraviolet spectrogram of the essence sample for tobacco to be measured that step 2 will collect adopts S-G smoothly to be reconstructed ultraviolet fingerprint in conjunction with first order derivative;
Step 3 is set up the ultraviolet fingerprint principal component analysis model of essence sample for tobacco to be measured with the Principal Component Analysis Method in the Chemical Measurement multivariable analysis;
(2) prepare qualified data
Step 4 is selected to be no less than 5 qualified after testing essence sample for tobacco and is set up standard database;
It is the maximal value of the mahalanobis distance Mi between the ultraviolet fingerprint principal component analysis model of all qualified essence sample for tobacco that step 5 is selected upper control limit UCL;
(3) judge relatively
Mahalanobis distance Mi between the ultraviolet fingerprint principal component analysis model of step 6 calculating essence sample for tobacco to be measured and the ultraviolet fingerprint principal component analysis model of qualified essence sample for tobacco, then this essence sample for tobacco to be measured is defective greater than upper control limit UCL as if Mi, otherwise this essence sample for tobacco to be measured is qualified;
UV scanning wavelength coverage during the uv absorption spectra of described collection essence sample for tobacco to be measured: 190～450nm, wavelength interval 1nm; Quartz colorimetric utensil light path: 0.1cm; Each sample scanning 15 times.
2. the detection method of flavouring essence for tobacco according to claim 1 is characterized in that described step 5 upper control limit UCL directly obtains from database.
3. the detection method of flavouring essence for tobacco according to claim 2 is characterized in that after the described step 6, and the mahalanobis distance Mi value between the ultraviolet fingerprint principal component analysis model of the essence sample for tobacco to be measured of test passes is joined in the database.
4. the detection method of flavouring essence for tobacco according to claim 3 is characterized in that the primary data in the described database is to select at least 5 batches of qualified essence sample for tobacco for use, carries out according to following steps:
Step 7 is gathered the uv absorption spectra of qualified essence sample for tobacco;
The spectrogram that step 8 will collect qualified essence sample for tobacco adopts S-G smoothly to be reconstructed ultraviolet fingerprint in conjunction with first order derivative;
Step 9 is set up the ultraviolet fingerprint principal component analysis model of qualified essence sample for tobacco with the Principal Component Analysis Method in the Chemical Measurement multivariable analysis;
Mahalanobis distance Mi between the ultraviolet fingerprint principal component analysis model of the qualified essence sample for tobacco of step 10 calculating;
Step 11 deposits the mahalanobis distance Mi between each qualified samples in database.
5. the detection method of flavouring essence for tobacco according to claim 1 is characterized in that described step 5 upper control limit UCL obtains according to step from qualified sample:
Step 12 is gathered the uv absorption spectra of at least 5 batches of qualified essence sample for tobacco;
The spectrogram that step 13 will collect qualified essence sample for tobacco adopts S-G smoothly to be reconstructed ultraviolet fingerprint in conjunction with first order derivative;
Step 14 is set up the finger-print principal component analysis model of qualified essence sample for tobacco with the Principal Component Analysis Method in the Chemical Measurement multivariable analysis;
Mahalanobis distance Mi between the ultraviolet fingerprint principal component analysis model of the qualified essence sample for tobacco of step 15 calculating.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2009100590309A CN101526471B (en) | 2009-04-22 | 2009-04-22 | Method for detecting essence for tobacco |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2009100590309A CN101526471B (en) | 2009-04-22 | 2009-04-22 | Method for detecting essence for tobacco |
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| CN101526471A CN101526471A (en) | 2009-09-09 |
| CN101526471B true CN101526471B (en) | 2011-01-12 |
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| CN2009100590309A Active CN101526471B (en) | 2009-04-22 | 2009-04-22 | Method for detecting essence for tobacco |
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| CN106370609A (en) * | 2016-08-29 | 2017-02-01 | 云南省烟草质量监督检测站 | Method for measuring acid value of tobacco essence |
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Owner name: CHINA TOBACCO CHUANYU INDUSTRIAL CO., LTD. Free format text: FORMER NAME: CHINA TOBACCO CHUANYU INDUSTRIAL CORPORATION |
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Address after: 610017 Jackie Chan Road, Chengdu economic and Technological Development Zone, Longquanyi District, Sichuan, China, No. 2, No. Patentee after: China Tobacco Chuanyu Industrial Co., Ltd. Address before: 610017 Jackie Chan Road, Chengdu economic and Technological Development Zone, Longquanyi District, Sichuan, China, No. 2, No. Patentee before: China Tobacco Chuanyu Industrial Corporation |
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Effective date of registration: 20170109 Address after: Nanping Nan'an District of Chongqing City Road 400060 No. 2 Patentee after: CHONGQING CHINA TOBACCO INDUSTRIAL CO., LTD. Patentee after: CHINA TOBACCO SICHUAN INDUSTRIAL CO., LTD. Address before: 610017 Jackie Chan Road, Chengdu economic and Technological Development Zone, Longquanyi District, Sichuan, China, No. 2, No. Patentee before: China Tobacco Chuanyu Industry Co., Ltd. |