Method for measuring lignin of reconstituted tobacco by paper-making process by virtue of near infrared reflectance spectroscopy technique

A technology of near-infrared spectroscopy and reconstituted tobacco leaves, which is applied in the direction of measuring devices, material analysis through optical means, instruments, etc., to achieve the effect of low analysis cost, reduced cost and fast analysis speed

Inactive Publication Date: 2015-05-06
CHINA TOBACCO YUNNAN IND
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Problems solved by technology

After the near-infrared diffuse reflection light enters the sample, it undergoes countless reflections, refraction, diffraction, and absorption, and then returns to the incident surface. This kind of analysis light loads the structure and composition information of the sample, and is a fast and environmentally friendly method. De

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  • Method for measuring lignin of reconstituted tobacco by paper-making process by virtue of near infrared reflectance spectroscopy technique
  • Method for measuring lignin of reconstituted tobacco by paper-making process by virtue of near infrared reflectance spectroscopy technique
  • Method for measuring lignin of reconstituted tobacco by paper-making process by virtue of near infrared reflectance spectroscopy technique

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[0040] The present invention will be further described in detail below in conjunction with the examples. Those skilled in the art will understand that the following examples are only for illustrating the present invention and should not be considered as limiting the scope of the present invention. If no specific technique or condition is indicated in the examples, it shall be carried out according to the technique or condition described in the literature in this field or according to the product specification. The reagents or instruments used were not indicated by the manufacturer, and they were all conventional products that could be purchased.

[0041] Step (1), collection of samples: collect a batch of 150-200 representative papermaking reconstituted tobacco products;

[0042] Step (2), collect the original spectrum: take three parallel samples of the reconstituted tobacco leaf products collected in step (1), and put the mixed solid powder of each parallel sample into the ...

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Abstract

The invention discloses a method for measuring lignin of a reconstituted tobacco by a paper-making process by virtue of a near infrared reflectance spectroscopy technique. The method comprises the following steps: (1) collecting and preparing a representative sample; (2) collecting an original spectrum; (3) selecting a correcting sample set and a verifying sample set; (4) measuring a reference value of the sample; (5) carrying out pretreatment on spectrum; (6) establishing a PLC model; (7) verifying the model; and (8) measuring the lignin. The method disclosed by the invention is simple, feasible and fast. By adopting a near infrared spectrum nondestructive detection technology, not only can the analytical efficiency be enhanced and the cost be lowered, but also the method has obvious practicality for accurately measuring the lignin of the reconstituted tobacco, improving the detection efficiency and objectively reflecting the product quality. The method disclosed by the invention has the advantages of high detection speed, no pollution, greenness and environmental protection, high accuracy, good repeatability and the like, and is suitable for on-site analysis and fast detection of the lignin as well as online monitoring of fluctuation of product quality.

Description

technical field [0001] The invention relates to a method for measuring lignin in reconstituted tobacco leaves by a papermaking method by using near-infrared diffuse reflectance spectroscopy, and belongs to the field of reconstituted tobacco leaves by a papermaking method. Background technique [0002] Reconstituted tobacco leaves are made from discarded tobacco stems, tobacco leaf fragments, tobacco dust, etc. through a series of processes, and are used as cigarette fillers and reused in cigarette production. Among the many components of reconstituted tobacco, lignin is a relatively stable component, which will not change greatly during the production and processing of reconstituted tobacco. Under the conditions of cigarette smoking, lignin will be cracked to produce catechol and alkyl catechol, causing astringent taste. Studies have shown that the higher the lignin content in tobacco, the more irritating tobacco will be, and the heavier the woody gas will be. Therefore, t...

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Application Information

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IPC IPC(8): G01N21/3563G01N21/359
Inventor 吴丽君张建华白晓莉王保兴段如敏王家俊和智君李忠刘恩芬
Owner CHINA TOBACCO YUNNAN IND
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