Unlock instant, AI-driven research and patent intelligence for your innovation.

Mixed catalyst and application thereof in protein content determination

A technology of mixing catalysts and catalytic assistants, which is applied in the detection field, can solve the problems of long sample digestion time, environmental pollution, and detection efficiency reduction, and achieve the effects of short sample digestion processing time, improved catalytic efficiency, and reduced detection costs

Pending Publication Date: 2022-03-22
CHONGQING CHINA TOBACCO IND CO LTD
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, most of the detection of protein in the tobacco industry uses red mercuric oxide as a catalyst in the digestion reaction, and red mercuric oxide is a highly toxic chemical. Its storage, use and waste liquid treatment require strict supervision and management. Not only It requires a lot of extra manpower for management, and it is easy to cause environmental pollution. In addition, when red mercury oxide is used as a catalyst, the sample digestion time is also longer, resulting in a greatly reduced detection efficiency

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Mixed catalyst and application thereof in protein content determination

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] The preparation of embodiment one catalyst 1

[0031] Preparation of catalyst promoter

[0032] Pretreatment: Measure methacryloxysilane and add it dropwise to 1wt% acetic acid aqueous solution, while stirring until the solution is clear and transparent, to obtain methacryloxysilane with a mass fraction of methacryloxysilane of 2wt%. Hydrolyzate, spare; take carbon airgel powder and add it to a ball mill, spray and add methacryloxysilane hydrolyzate, add agate balls, carbon airgel powder and solid-liquid of methacryloxysilane hydrolyzate The ratio is 1:5, the mass ratio of carbon airgel powder and agate ball is 1:20, and the ball milling is carried out for 16h under the condition of 150r / min at a rotating speed. Dry.

[0033] Loading: Take 1.0g ferrous ammonium sulfate and dissolve it in 10ml hydrazine hydrate to obtain ferrous ammonium sulfate solution, add 0.25g pretreated carbon airgel powder to 15ml ethylene glycol, after ultrasonic dispersion, add ferrous sulfate...

Embodiment 2

[0036] The preparation of embodiment two catalyst 2

[0037] Preparation of catalyst promoter

[0038] Pretreatment: Measure methacryloxysilane and add it dropwise to 1wt% acetic acid aqueous solution, while stirring until the solution is clear and transparent, to obtain methacryloxysilane with a mass fraction of 1wt% methacryloxysilane Hydrolyzate, spare; take carbon airgel powder and add it to a ball mill, spray and add methacryloxysilane hydrolyzate, add agate balls, carbon airgel powder and solid-liquid of methacryloxysilane hydrolyzate Ratio is 1:20, the mass ratio of carbon airgel powder and agate ball is 1:50, under the condition that rotating speed is 180r / min, carry out ball milling 15h, after ball milling finishes, filter and obtain carbon airgel powder, dry after washing Dry.

[0039] Loading: Take 1.2g ferrous ammonium sulfate and dissolve it in 10ml hydrazine hydrate to obtain ferrous ammonium sulfate solution, add 0.2g pretreated carbon airgel powder to 15ml et...

Embodiment 3

[0042] The preparation of embodiment three catalysts 3

[0043] Preparation of catalyst promoter

[0044] Pretreatment: Measure methacryloyloxysilane and add it dropwise to 1wt% acetic acid aqueous solution, while stirring until the solution is clear and transparent, to obtain methacryloyloxysilane with a mass fraction of methacryloyloxysilane of 1.5wt%. Silane hydrolyzate, standby; take carbon airgel powder and add in ball mill, spray and add methacryloxysilane hydrolyzate, add agate balls, carbon airgel powder and methacryloxysilane hydrolyzate The liquid ratio is 1:12, the mass ratio of carbon airgel powder and agate ball is 1:35, and the ball milling is carried out for 15h under the condition of 200r / min at a rotating speed, and the carbon airgel powder is obtained by filtering after the ball milling is completed. After washing drying.

[0045] Loading: Take 2.0g ferrous ammonium sulfate and dissolve it in 15ml of hydrazine hydrate to obtain ferrous ammonium sulfate solu...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to the technical field of detection, in particular to a mixed catalyst and application thereof in protein content determination. The mixed catalyst comprises copper sulfate, selenium powder and a catalytic promoter, the catalytic promoter is prepared by taking carbon aerogel as a carrier, loading nano ferroferric oxide on the carrier and then grafting lactic acid, and the mass ratio of the copper sulfate to the selenium powder to the catalytic promoter is (10-15): 1: (0.1-0.2). According to the mixed catalyst and the application thereof in protein content determination, the catalytic activity of the mixed catalyst can be improved through the added catalytic promoter, so that the digestion time is shortened, and the detection efficiency is improved.

Description

technical field [0001] The invention relates to the technical field of detection, in particular to a mixed catalyst and its application in protein content determination. Background technique [0002] The protein in tobacco is one of the compounds that have an important impact on the quality of tobacco leaves. Firstly, during the growth and development of tobacco plants, protein is the material basis for ensuring the vitality of the body. Secondly, after the tobacco leaves are picked, the protein will interact with other chemical substances during the curing and aging process. The substance undergoes a series of chemical reactions. On the one hand, it will generate aroma components that improve the smoking quality of tobacco leaves, etc., and increase the use value of tobacco leaves. On the other hand, it will also generate irritating and spicy substances, such as ammonia. Therefore, the protein content in the tobacco leaves should be controlled within a certain range. [00...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/055B01J21/18B01J31/04B01J31/28G01N31/10G01N1/28
CPCB01J27/055B01J21/18B01J31/04B01J31/28G01N31/10G01N1/28
Inventor 王鹏许嘉东吕祥敏唐杰陈云璨孙兰茜黎洪利周浩秦子娴何春莉
Owner CHONGQING CHINA TOBACCO IND CO LTD