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Method for rapidly identifying flue-cured tobacco cinnabar tobacco leaves

A technology of tobacco leaves and cinnabar, which is applied in the field of flue-cured tobacco identification, can solve the problems of greater influence of subjective factors and unguaranteed accuracy, and achieve the effect of intuitive and simple discrimination criteria, high accuracy and strong operability

Inactive Publication Date: 2020-07-07
HONGTA TOBACCO GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the identification of cinnabar tobacco is mainly based on the judgment of its surface color by the naked eye, relying on the empirical identification methods such as visual observation and hand touch, etc. The technical and experience requirements of tobacco leaf quality inspectors are relatively high, and subjective factors have a greater influence , accuracy cannot be guaranteed

Method used

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  • Method for rapidly identifying flue-cured tobacco cinnabar tobacco leaves
  • Method for rapidly identifying flue-cured tobacco cinnabar tobacco leaves
  • Method for rapidly identifying flue-cured tobacco cinnabar tobacco leaves

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] 1. Implementation materials: the proven upper orange tobacco leaves (BF), upper lemon tobacco leaves (BL), middle orange tobacco leaves (CF), middle lemon tobacco leaves (CL), lower orange tobacco leaves (XF), and lower lemon tobacco leaves (XL), red brown tobacco leaves (BR) and cinnabar tobacco leaves (ZS) were used as implementation materials.

[0023] 2. The identification steps are as follows: select 2 symmetrical points (totally 6 points, respectively) at the main vein and the middle part of the leaf edge at 1 / 3, 1 / 2, and 1 / 3 from the leaf base of the flue-cured tobacco leaf. The selected measurement points should avoid leaf veins, damage and disease spots as far as possible), and measure the tobacco leaf surface color parameters {lightness (L*), redness (a*), yellowness (b*), saturation (C*) and hue Angle (H 0 )} and the reflectance spectrum to calculate the first-order reciprocal of the color reflectance spectrum. Calculate the first-order reciprocal of the co...

Embodiment 2

[0032] The confirmed cinnabar tobacco leaf was randomly selected as the implementation material, and 20 detection points were randomly selected from 200 detection points for data analysis.

[0033] The identification steps are as follows: select 2 symmetrical points (a total of 6 points, the selected The measurement points should avoid leaf veins, damage and disease spots as much as possible), measure the color parameters and reflection spectrum of the tobacco leaf surface, and calculate the first-order reciprocal of the color reflection spectrum. Calculate the first-order reciprocal of the color reflection spectrum, as follows: divide the difference between two adjacent spectra by the spectral interval value of 10nm, which is the first-order reciprocal value of the first point. Randomly select 20 test point data as verification.

Embodiment 3

[0035] The confirmed upper cinnabar tobacco leaves (5 samples) were randomly selected as implementation materials.

[0036] The identification steps are as follows: select 2 symmetrical points (a total of 6 points, the selected The measurement points should avoid leaf veins, damage and disease spots as much as possible), measure the color parameters and reflection spectrum of the tobacco leaf surface, and calculate the first-order reciprocal of the color reflection spectrum. Calculate the first-order reciprocal of the color reflection spectrum, as follows: divide the difference between two adjacent spectra by the spectral interval value of 10nm, which is the first-order reciprocal value of the first point.

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Abstract

The invention relates to a method for rapidly identifying flue-cured tobacco cinnabar tobacco leaves, and belongs to the technical field of flue-cured tobacco identification. The method comprises thefollowing steps: respectively selecting two symmetrical points (avoiding veins and residual wounds as much as possible) at the positions 1 / 3 and 1 / 2 away from leaf tips and the middle parts of main veins and leaf edges at the positions 1 / 3 away from leaf bases of flue-cured tobacco leaves, measuring surface color parameters and reflectance spectra of tobacco leaves, and calculating first-order reciprocal of color reflectance spectra, wherein the color parameters corresponding to the cinnabar tobacco leaves are as follows: the brightness (L*), the redness (a*), the yellowness (b*) and the saturation (C*) range from 44.58 to 60.24, from 20.89 to 26.89, from 35.46 to 49.85 and from 41.78 to 54.3; the spectral reflection first-order reciprocal spectrogram shows that the first high point is at530 nm, the first-order reciprocal value at 530 nm is between 0.2 and 0.3, and the spectral reflection first-order reciprocal spectrogram has uniqueness compared with tobacco leaves of other color cells and can be used as a basis for identifying cinnabar tobacco leaves. The method disclosed by the invention is high in determination speed, simple and clear in judgment standard and high in applicability and accuracy, and can be used as a basis for quickly identifying the cinnabar tobacco leaves.

Description

technical field [0001] The invention belongs to the technical field of flue-cured tobacco identification, and in particular relates to a method for quickly identifying flue-cured tobacco cinnabar leaves. Background technique [0002] Flue-cured cinnabar tobacco leaves, also known as cherry red tobacco leaves, are characterized by the appearance of cinnabar-colored plaques with strong chroma on the surface of the tobacco leaves, with obvious small granular objects on the plaques, and a prominent smell. Studies on the formation mechanism of cinnabar tobacco leaves have shown that flue-cured tobacco cinnabar tobacco leaves are induced by the environment in conventional flue-cured tobacco varieties, resulting in mutations in genes that control nicotine synthesis and transformation in tobacco plants, resulting in the metabolic transformation of nicotine in tobacco leaves to demethylnicotine. The high content of demethylnicotine in tobacco leaves is linked to the "cherry red" hue ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/25
CPCG01N21/25
Inventor 田阳阳刘魁赵文军徐益群杨继周王正旭常立杜向东卢茂禄梅玲丽陈超胡保文姚江美文振山王军伟孙蒙猛傅皓冯佳薇
Owner HONGTA TOBACCO GRP