CN104680314A - Method for carrying out sensory evaluation on style characteristic of tobacco leaf - Google Patents

Abstract

The invention relates to a method for carrying out sensory evaluation on a style characteristic of a tobacco leaf. According to the method, indexes for style characteristic sensory evaluation and smoking comprise the fragrance characteristic, the fragrance, the taste style and the miscellaneous smell characteristic, and an evaluation and smoking requirement and a test method are ruled; sensory evaluation and smoking data are quantitatively described by a 9-score method; an evaluation and smoking result is that an evaluation smoker counts whether scores are given to all the indexes or not so as to count the score proportions of all the indexes; the evaluation and smoking index with the score proportion over 50 percent is subjected to single average score calculation to obtain a final evaluation result; the evaluation and smoking result is represented by a skeleton map. The method for carrying out sensory evaluation and judgment on the style characteristic of the tobacco leaf has the advantages of being simple, convenient, accurate and high in operability.

Description

The method of a kind of tobacco style feature sensory evaluation

Technical field

The present invention relates to tobacco leaf sensory evaluation technique field.

Background technology

Tobacco leaf is as the basis of cigarette industry, and the quality of its quality is the key determining cigarette quality.Quality of tobacco mainly comprises tobacco leaf presentation quality, physical features, chemical composition and aesthetic quality four part.Wherein, aesthetic quality is the important component part of cigarette product quality, is basis and the core of product quality.The aesthetic quality of broad sense refers to the comprehensive impression that the main flume that cigarette produces in combustion produces human body, as the quality and quantity of fragrance, the comfort level etc. of mouthfeel; Also comprise the factor of representative products style and features, as tobacco style type, note feature etc.Style and features is the core component of tobacco leaf characteristic, reflects the difference characteristic of the horizontal tobacco leaf of equal in quality, is more and more subject to the attention of tobacco business in recent years.Grasp the style and features of raw tobacco material, can be different-style cigarette and provide science reference on raw tobacco material choice for use.Tobacco sensory quality and style characteristic are two kinds of forms of expression of tabacum sensory, not only they closely related but also have any different, quality represents the quality of tobacco leaf, is the degree that tobacco leaf inherent characteristic meets industrial requirements, is the differentiation of quality index testing result to the every legal or agreement of tobacco leaf; The style characteristic of tobacco leaf is then the qualitative characteristics that a kind of tobacco leaf is different from other tobacco leaf.

That the style of tobacco leaf repeats when typically referring to tobacco leaf suction, metastable, can the sense organ personal characteristics that other tobacco leaf is different from of perception and approval.It is the appearance features determined by the inherent material base of tobacco leaf, and the style of tobacco leaf plays leading role to the formation of cigarette product style, therefore one of the style characteristic key factor that can be described as quality of tobacco of tobacco leaf, has vital role to the formation of cigarette product style.Therefore, the foundation being applicable to the sensory evaluation method of tobacco style characteristic just seems particularly important.

Cigarette industry is monitored style characteristic as important quality index.Along with the proposition of China's " on cigarette level " development strategy, the development research of characteristic sound tobacco, the importance of tobacco style feature sensory evaluation promotes day by day, but very few for the technique study of tobacco style feature sensory evaluation.At present, the standard that tobacco business relates generally to flue-cured tobacco sensory evaluation has: GB/T5606.4-2005 " cigarette the 4th part: sense organ technical requirement ", GB/T 10221-1998 " organoleptic analysis's term " (idt ISO5492:1992), YC/T 138-1998 " tobacco and tobacco product sensory evaluation method ".These methods mainly lay particular emphasis on the aesthetic quality of tobacco leaf, and the evaluation method that aesthetic quality and style being smoked panel test of research in recent years combines is then comparatively complicated, and technical requirement is high, and operability is not strong.So, study the problem that a kind of tobacco style characteristic sensory evaluation method that is easy, accurate, strong operability has become these those skilled in the art concern.

On the basis with reference to flue-cured tobacco sensory evaluation method, use for reference tobacco sensory quality assessment method (5 points of systems, 9 points of systems, 100 points of systems, symbolic notations etc.), (as all trickleer in tobacco style feature odor type, note, mouthfeel style according to the feature of tobacco style feature, seizure difficulty is large), in conjunction with experience, explore and establish a kind of sensory evaluation method of applicable tobacco style feature.

By literature search, the open report identical with the present invention is had no.

Summary of the invention

The object of the invention is to the shortage for above-mentioned existing methodical deficiency and the sensory evaluation of current domestic tobacco style feature, the sensory evaluation method of custom-designed a kind of tobacco style feature, the sensory evaluation for tobacco style feature provides a kind of sensory evaluation method of easy, accurate, strong operability.

The object of the invention is to be achieved through the following technical solutions:

A method for tobacco style feature sensory evaluation, the method defines the index being suitable for tobacco style feature aesthetic quality and smokeing panel test, and by mathematical operation, whether provides score value add up for indices member of smoking, adds up each index marking ratio Y _j, and its individual event average is calculated to the Sensory quality index that the ratio captured is greater than 50% the index that statistics ratio is less than 50% is invalid index, adopts each Sensory quality index average mark of profile diagram to effective evaluation to evaluate; Concrete steps are as follows:

(1) index of regulation style and features sensory evaluation comprises odor type feature, note, mouthfeel style and assorted gas feature; Described odor type feature comprises delicate fragrance type, flat-flavor, Luzhou-flavor; Described note comprises hay perfume (or spice), fresh and sweet perfume (or spice), just fragrant and sweet, burnt fragrant and sweet, delicate fragrance, the banksia rose, burnt odor, fruital, beans perfume, nutty, Xin Xiang, the fragrance of a flower; Described mouthfeel style comprises fragrance state, mellow and full sense, dry sensation; Described assorted gas feature comprises: blue foreign smell, raw blue or green gas, withered and burnt smell, xylon gas, the smell of soil, rosin gas;

(2) each index is classified and scale value, 9 points of systems are adopted to score, be specially and scale value is divided into 9-8, 7-6, 5-4, 3-2, 1-0, corresponding index classification carries out scale, odor type is 9-8 significantly, be 7-6 more significantly, be 5-4 still significantly, that slightly aobvious is 3-2, micro-is 1-0 to nothing, note is significantly 9-8, be significantly 7-6, be slightly significantly 5-4, that slightly aobvious is 3-2, micro-is 1-0 to nothing, that fragrance state is good is 9-8, be 7-6 preferably, that moderate is 5-4, that slightly poor is 3-2, poor to very poor be 1-0, that mellow and full sense is mellow and full is 9-8, that more mellow and fuller is 7-6, that still mellow and full is 5-4, that slightly crude is 3-2, more crude to crude be 1-0, that dry sensation Jin Run is 9-8, compared with Jin Run is 7-6, that Shang Jinrun is 5-4, that slightly dry is 3-2, that be comparatively dried to drying is 1-0, that assorted gas feature is heavy is 9-8, that heavier is 7-6, that have is 5-4, slightly be 3-2, micro-is 1-0 to nothing,

(3) quantitative description sensory evaluation data, be specially the regulation personnel that smoke panel test and be no less than 7 people, the scoring ratio of statistics member of smoking, whether scoring is provided according to member of smoking, the index that ratio is greater than 50% is designated as effective score value, the index being less than 50% ratio is designated as invalid value, and namely a point Data-Statistics for this index is zero;

(4) calculate the mean value of each effective score value, result remains to two-decimal, is specially:

Calculate tobacco style index by formula (a) to smoke panel test each individual event result of determination percentage of personnel ratios, be accurate to 0.1%:

$Y_j=\frac{K_j}{n}\×100\%...\left(a\right);$

In formula: K _j---all there is the number of score value in certain individual event Judging index,

N---participate in number of smokeing panel test,

Y _j---certain individual event Judging index judges ratio;

After completing above statistics, the index that judgement ratio is greater than 50% carries out a point Data-Statistics, carries out individual event average mark statistics by formula (b) mode:

${\stackrel{\‾}{X}}_i=\frac{\mathrm{\Σ}{X}_i}{n}...\left(b\right);$

In formula: Σ X _i---certain individual event organoleptic indicator score add and,

The number of smokeing panel test of marking is carried out in n---certain individual event,

---certain individual event average;

(5) ratio Y is added up _jwith individual event average for the sensory evaluation of tobacco style feature, statistics ratio Y _jbe worth larger index, show that this index feature of tobacco leaf is easy to catch;

(6) to statistics ratio Y _jthe index being greater than 50% carries out individual event average calculate, individual event average larger, show this index feature more obvious.

The inventive method can also be described other organoleptic features captured.

The present invention is on the basis of the sensory evaluation method with reference to flue-cured tobacco, use for reference tobacco sensory quality assessment method (5 points of systems, 9 points of systems, 100 points of systems, symbolic notations etc.), (according to the feature of tobacco style feature style and features index odor type, note as inherent trickle in tobacco leaf, style etc. can be felt exist and be difficult to catch, the features such as odor type, note evaluation are comparatively fine and smooth), in conjunction with scientific research experience, create a kind of method being suitable for the sensory evaluation of tobacco style feature, the inventive method be easy, accurate, strong operability.

Accompanying drawing explanation

Fig. 1 is the sensory evaluation characteristic pattern of embodiment.

Embodiment

The method particular content of a kind of tobacco style feature provided by the invention sensory evaluation is as follows:

1) sensory evaluating smoking requires:

In member of smoking's requirement, environmental requirement of smokeing panel test, process of smokeing panel test oral cavity remain the removing of smoke, sample cigarette take and prepare all by YC/T 138-1998 4 General Requirements carry out;

2) sensory evaluating smoking's key element (index):

Sensory evaluating smoking's index: odor type feature (comprising: delicate fragrance type, flat-flavor, Luzhou-flavor), note (comprising: hay perfume, fresh and sweet perfume (or spice), just fragrant and sweet, burnt fragrant and sweet, delicate fragrance, the banksia rose, burnt odor, fruital, beans perfume, nutty, Xin Xiang, the fragrance of a flower), mouthfeel style (comprising: fragrance state, mellow and full sense, dry sensation) and assorted gas feature (comprising: blue foreign smell, raw blue or green gas, withered and burnt smell, xylon gas, the smell of soil, rosin gas).

3) test method

A. the extraction of tobacco sample is undertaken by GB/T 5606.1-2004 standard;

B. to smoke panel test sample moisture by GB/T 16447-2004 standard adjustment before smokeing panel test;

C. tobacco style feature sensory evaluation marking is undertaken by table 1 rule;

D. sample encoded of smokeing panel test is carried out according to random coded;

E. sensory evaluation adopts and secretly comments scoring system, and the personnel that smoke panel test of participation are no less than 7 people and for odd number at every turn, also can adopt according to actual needs brightly to comment mode.Score sheet is in table 2;

F. provide encoded sample and table 1 and table 2 to the personnel that smoke panel test, require that member of smoking scores to indices according to the requirement in table;

The classification of table 1 tobacco style characteristic scale and each scale value meaning

Table 2 tobacco leaf sense organ style characteristic check table

4) requirement is evaluated

A. sensory evaluation is scored employing 9 points system, and highest score is 9 points;

B. projects are all divided into 1 unit of scoring;

C. when scoring to odor type feature, note feature, mouthfeel style and assorted gas feature indices, each project quality reaches the requirement of respective item, then correspondingly score;

D. to other tobacco style features not being listed in table and capture, carry out comprehensive description evaluation, evaluation result inserts " other feature interpretation " hurdle of table 2.

5) result statistics

Feature due to the sensory evaluation of tobacco style feature catches the inherent trickle style and features index of tobacco leaf, usually there is the phenomenon that some characteristic index fails to catch.To this, in the invention of tobacco style feature sensory evaluation, first whether this method should provide score value for indices member of smoking is added up, the index that member of smoking only more than more than 50% provides score value can be designated as effective statistical study, the index that the member of smoking being less than less than 50% provides score value is not designated as effective statistical study index, namely this index is all added up is that zero (as: 7 members of smoking smoke panel test, there are 4 personal feelings to be flat-flavor to tobacco leaf or there is hay note, accounting is more than 50%, then score value charges to statistics; If only have 3 personal feelings to arrive, lower than 50%, then this index divides Data-Statistics to be zero, and be not averaged a point statistics).

The effective mark of the effective smoking result of same item of each member of smoking is added and, ask its arithmetic mean, result remains to two-decimal; Each single index judges and average mark statistics is added up by formula (a) and (b) method respectively.

Ration statistics: calculate tobacco style index by formula (a) and to smoke panel test each individual event result of determination percentage of personnel ratios, be accurate to 0.1%:

$Y_j=\frac{K_j}{n}\×100\%...\left(a\right);$

In formula:

K _j---all there is the number of score value in certain individual event Judging index;

N---participate in number of smokeing panel test;

Y _j---certain individual event Judging index judges ratio.

Individual event average mark is added up: after completing above statistics, the index that most member of smoking captures then is added up, and requires that the index that judgement ratio is greater than 50% carries out a point Data-Statistics:

When carrying out individual event average indicator-specific statistics, add up by formula (b) mode.

${\stackrel{\‾}{X}}_i=\frac{\mathrm{\Σ}{X}_i}{n}...\left(b\right);$

In formula:

Σ X _i---certain individual event organoleptic indicator score add and;

The number of smokeing panel test of marking is carried out in n---certain individual event;

---certain individual event average.

Using the evaluation of Chongqing tobacco style feature sense organ as instantiation, adopt and secretly comment mode, member of smoking according to table 1 smoke panel test scale regulation, by table 2 to check and correction tobacco leaf (comprising: Luzhou-flavor, flat-flavor and delicate fragrance type) each index smoke panel test and evaluate and proofread bore.Then, the cigarette finishing number is distributed to the personnel that respectively smoke panel test by staff, and member of smoking, with reference to check and correction tobacco sample, smokes panel test to sample of smokeing panel test respectively, the scoring and description result of proofreading tobacco sample and tobacco sample of smokeing panel test is filled in respectively in corresponding table.After having smoked panel test, by staff, each marking table is gathered, arranges, respectively ration statistics and the statistical study of individual event average mark are carried out to the evaluation result of tobacco style feature sense organ by formula (a), (b).

Carried out the sensory evaluation of Chongqing tobacco style feature according to the method described above, its result is as shown in table 3.

To every index passing ratio statistics of 7 experts, rejecting is less than less than 50% statistical indicator, further calculating average mark statistical value, as shown in Table 3, the style odor type feature of Chongqing TC01 tobacco leaf presents obvious flat-flavor tobacco leaf feature, the notes such as it is fresh and sweet perfume (or spice), beans are fragrant, nutty and the fragrance of a flower and the assorted gas such as the smell of soil and rosin gas do not show, and all the other indexs are to be evaluated effectively.

By above statistical study, utilize the indices average of sample, draw sensory evaluation characteristic pattern further, see Fig. 1, from, find out in 1, in the sensory evaluation of Chongqing tobacco style feature, TC01 tobacco sample has flat-flavor and protrudes, and hay is fragrant, just fragrant and sweet, the banksia rose and burnt odor note enrich, and is attended by the notes such as certain Jiao is fragrant and sweet, delicate fragrance, fruital and Xin Xiang, tabacco fragrance state is better, there is mellow and full sense, be attended by certain dry sensation, and tobacco leaf has certain blue foreign smell, raw blue or green gas, withered and burnt smell and xylon gas.The weight that accounts for of tobacco leaf note is higher generally, and fragrance state is taken second place, and shared by assorted gas, weight is less.

Sensory evaluation marking table of the present invention, has fully seeked the opinion of tobacco business expertise, and has utilized this method to carry out the style and features sensory evaluation of Chongqing tobacco sample.By the evaluation result of expert to every index, adopt single index ration statistics and average mark statistical study known, the method is applicable to the sensory evaluation of tobacco style characteristic index, obtains the consistent accreditation of expert.The data result of statistical study is with a high credibility, and data are effective, illustrate that the method has science, validity to the sensory evaluation of tobacco style feature.

Sensory evaluation marking statistical form (TC01 sampling) of table 3 Chongqing tobacco style feature

Note: "-" represents that the index that ration statistics is less than 50% does not carry out the statistical computation of individual event average mark.

Claims (2)

1. the method for tobacco style feature sensory evaluation, it is characterized in that, the method defines the index being suitable for tobacco style feature aesthetic quality and smokeing panel test, and passes through mathematical operation, whether provide score value for indices member of smoking to add up, add up each index marking ratio Y _j, and its individual event average is calculated to the Sensory quality index that the ratio captured is greater than 50% the index that statistics ratio is less than 50% is invalid index, adopts each Sensory quality index average mark of profile diagram to effective evaluation to evaluate; Concrete steps are as follows:

(1) index of regulation style and features sensory evaluation comprises odor type feature, note, mouthfeel style and assorted gas feature; Described odor type feature comprises delicate fragrance type, flat-flavor, Luzhou-flavor; Described note comprises hay perfume (or spice), fresh and sweet perfume (or spice), just fragrant and sweet, burnt fragrant and sweet, delicate fragrance, the banksia rose, burnt odor, fruital, beans perfume, nutty, Xin Xiang, the fragrance of a flower; Described mouthfeel style comprises fragrance state, mellow and full sense, dry sensation; Described assorted gas feature comprises: blue foreign smell, raw blue or green gas, withered and burnt smell, xylon gas, the smell of soil, rosin gas;

(2) each index is classified and scale value, 9 points of systems are adopted to score, be specially and scale value is divided into 9-8, 7-6, 5-4, 3-2, 1-0, corresponding index classification carries out scale, odor type is 9-8 significantly, be 7-6 more significantly, be 5-4 still significantly, that slightly aobvious is 3-2, micro-is 1-0 to nothing, note is significantly 9-8, be significantly 7-6, be slightly significantly 5-4, that slightly aobvious is 3-2, micro-is 1-0 to nothing, that fragrance state is good is 9-8, be 7-6 preferably, that moderate is 5-4, that slightly poor is 3-2, poor to very poor be 1-0, that mellow and full sense is mellow and full is 9-8, that more mellow and fuller is 7-6, that still mellow and full is 5-4, that slightly crude is 3-2, more crude to crude be 1-0, that dry sensation Jin Run is 9-8, compared with Jin Run is 7-6, that Shang Jinrun is 5-4, that slightly dry is 3-2, that be comparatively dried to drying is 1-0, that assorted gas feature is heavy is 9-8, that heavier is 7-6, that have is 5-4, slightly be 3-2, micro-is 1-0 to nothing,

(3) quantitative description sensory evaluation data, be specially the regulation personnel that smoke panel test and be no less than 7 people, the scoring ratio of statistics member of smoking, whether scoring is provided according to member of smoking, the index that ratio is greater than 50% is designated as effective score value, the index being less than 50% ratio is designated as invalid value, and namely a point Data-Statistics for this index is zero;

(4) calculate the mean value of each effective score value, result remains to two-decimal, is specially:

Calculate tobacco style index by formula (a) to smoke panel test each individual event result of determination percentage of personnel ratios, be accurate to 0.1%:

$Y_j=\frac{K_j}{n}\×100\%...\left(a\right);$

In formula: K _j---all there is the number of score value in certain individual event Judging index,

N---participate in number of smokeing panel test,

Y _j---certain individual event Judging index judges ratio;

After completing above statistics, the index that judgement ratio is greater than 50% carries out a point Data-Statistics, carries out individual event average mark statistics by formula (b) mode:

${\stackrel{\‾}{X}}_i=\frac{\mathrm{\Σ}{X}_i}{n}...\left(b\right);$

In formula: Σ X _i---certain individual event organoleptic indicator score add and,

The number of smokeing panel test of marking is carried out in n---certain individual event,

---certain individual event average;

(5) ratio Y is added up _jwith individual event average for the sensory evaluation of tobacco style feature, statistics ratio Y _jbe worth larger index, show that this index feature of tobacco leaf is easy to catch;

(6) to statistics ratio Y _jthe index being greater than 50% carries out individual event average calculate, individual event average larger, show this index feature more obvious.

2. the method for a kind of tobacco style feature sensory evaluation according to claim 1, is characterized in that, the inventive method can also be described other organoleptic features captured.