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Method for detecting lactic acid and butyric acid in tobacco feed liquid and feed liquid dewatering device

A technology of tobacco and feed liquid, which is applied in the field of analytical chemistry, can solve the problems of incomplete methylation reaction, affect the test results, affect the methylation effect, etc., achieve complete methylation reaction, reduce costs, and improve product safety Effect

Pending Publication Date: 2017-11-24
CHINA TOBACCO YUNNAN IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the high moisture content of most tobacco feed liquids will affect the methylation effect, resulting in incomplete methylation reaction and affecting the test results

Method used

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  • Method for detecting lactic acid and butyric acid in tobacco feed liquid and feed liquid dewatering device
  • Method for detecting lactic acid and butyric acid in tobacco feed liquid and feed liquid dewatering device
  • Method for detecting lactic acid and butyric acid in tobacco feed liquid and feed liquid dewatering device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] A solid-phase extraction column for effectively removing moisture from tobacco material liquid, including a column cavity and a column cap, four sieve plates are arranged in the column cavity, and an independent space is formed between two adjacent sieve plates to separate the column cavity It is divided into three relatively independent packing chambers, and each packing chamber is filled with different packing materials, from top to bottom: polyacrylic acid superabsorbent resin, anhydrous sodium sulfate and color-changing silica gel. The volume occupied by polyacrylic acid superabsorbent resin, anhydrous sodium sulfate, and color-changing silica gel packing in the column cavity is approximately 2 / 5, 2 / 5 and 1 / 5. The two ports of the column cavity are threaded, and the column cap is a screw cap with corresponding threads. The two are connected by threads and compress the filler in the column cavity. The polyacrylic acid superabsorbent resin in the first layer is an org...

Embodiment 2

[0038] The measured sample is cigarette lining, take 4.0g of the material liquid, dilute it with 6.0mL of methanol, and pass the diluent through the solid-phase extraction column described in Example 1 at a flow rate of 15mL / min, and then use 12mL of methanol Elute the solid-phase extraction column; combine the tobacco material liquid sample and methanol eluate after passing the column into a glass bottle. Add 1.6 mL of concentrated sulfuric acid to the combined solution, and seal the esterification reaction in a water bath at 70°C for 35 min. Take 1.0mL of methyl esterified solution to a liquid-liquid extraction device, add 1.0mL of dichloromethane, shake fully, then add 1.0mL of water to shake for 2-4min, and let stand for 20-40min. Then push down the piston rod of the liquid-liquid extraction device, stratify at the capillary mouth, then suck out (or pour out) the upper layer, and the lower layer (dichloromethane layer) is filtered with a 0.45 μm organic filter membrane, an...

Embodiment 3

[0042] The measured sample is the Rosa roxburghii extract, 4.0g of the feed liquid is diluted with 6.0mL of methanol, and the diluted solution passes through the solid-phase extraction column described in Example 1 at a flow rate of 15mL / min, and after passing the column, use 4mL of Methanol eluted solid-phase extraction column; combined the tobacco material liquid sample and methanol eluate after passing through the column into a glass bottle. Add 1.6 mL of concentrated sulfuric acid to the combined solution, and seal the esterification reaction in a water bath at 70°C for 35 min. Take 1.0mL of methyl esterified solution to a liquid-liquid extraction device, add 1.0mL of dichloromethane, shake fully, then add 1.0mL of water to shake for 2-4min, and let stand for 20-40min. Then push down the piston rod of the liquid-liquid extraction device, stratify at the capillary mouth, then suck out (or pour out) the upper layer, and the lower layer (dichloromethane layer) is filtered wit...

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Abstract

The invention discloses a method for detecting lactic acid and butyric acid in tobacco feed liquid and a feed liquid dewatering device. Sieve plates are used for dividing a column chamber of a solid phase extraction column into three filling chambers; the filling chambers are respectively used for filling polyacrylate super-absorbent resin, anhydrous sodium sulfate and allochroic silica gel; a tobacco feed liquid sample is dewatered by the solid phase extraction column, the dewatered sample is methyl-esterified by sulfuric methanol, the generated methyl lactate and methyl butyrate are extracted with methylene dichloride and then the gas chromatography-mass spectrum is adopted for determining the content of lactic acid and butyric acid. The solid phase extraction column of the feed liquid dewatering device has a simple structure; the filling is convenient; the device is reusable and is capable of saving cost and lowering cost. The detecting method is simple in operation; the detecting result is accurate; the metamorphic condition of the tobacco feed liquid can be judged according to the content change of the lactic acid and butyric acid; a new reliable method is supplied for early warning for the metamorphic risk of the tobacco feed liquid.

Description

technical field [0001] The invention belongs to the technical field of analytical chemistry, in particular to a method for accurately measuring the contents of lactic acid and butyric acid in tobacco material liquid. At the same time, the invention also relates to a device capable of rapidly and effectively dehydrating tobacco material liquid. Background technique [0002] Tobacco liquid is an important auxiliary material in the production process of cigarette enterprises, an important factor in the style of cigarette brands, and can play a role in improving the smoke quality of cigarette products and improving the quality of cigarette products. The consistency of tobacco liquid quality is closely related to the quality and stability of cigarette products. There are many reasons affecting the quality of tobacco feed liquid, among which microbial contamination is an important and main factor. This is mainly because the feed liquid has the characteristics of high moisture and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N30/02G01N30/06G01N30/60
CPCG01N30/02G01N30/06G01N30/6052G01N2030/062
Inventor 李晶刘欣李雪梅米其利杨叶昆孔维松陈建华耿永勤张承明徐济仓杨光宇
Owner CHINA TOBACCO YUNNAN IND
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