Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Application and detecting method of 3,2'-diaminobenzidine (DAB) and quinoxaline analogues thereof on diacetyl detection

A technology of diaminobenzidine and analogs, applied in the field of diacetyl detection, can solve the problem of only seeing selenium in application

Active Publication Date: 2016-12-07
NORTHWEST UNIV
View PDF3 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, in countries with developed aerospace and military industries, DAB has been focused on research and used as a monomer for the preparation of high-grade polymer materials, mainly for the synthesis of heat-resistant polymer resins and synthetic fibers, but it is used as a color developer in analytical chemistry. The field of application is only found in the photometric determination of selenium

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
  • Application and detecting method of 3,2'-diaminobenzidine (DAB) and quinoxaline analogues thereof on diacetyl detection
  • Application and detecting method of 3,2'-diaminobenzidine (DAB) and quinoxaline analogues thereof on diacetyl detection
  • Application and detecting method of 3,2'-diaminobenzidine (DAB) and quinoxaline analogues thereof on diacetyl detection

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0042] 1. Preparation of DAB analogs II-IV

[0043] 1. Preparation of DAB analog II: The reaction is as follows, taking diacetyl as an example for compound A.

[0044]

[0045]The specific process is: weigh 3,3'-diaminobenzidine tetrahydrochloride (DAB-4HCl) (108mg, 0.3mmol), add it to a 25mL round bottom flask, add 10mL distilled water, and stir gently at room temperature to make DAB fully dissolve. After about 10-20 minutes, add diacetyl (35mg, 0.4mmol), continue stirring at room temperature for half an hour, filter the reaction solution, wash the insoluble matter with distilled water three times (5mL×3), and combine the washing solution with the previous filtrate , extracted with chloroform (20mL×5), combined the 3rd to 5th extracts, anhydrous MgSO 4 After drying for 2 hours, the desiccant was removed by filtration, and the filtrate was concentrated under reduced pressure to obtain a dark red powder (65.2 mg, 82.3%). 1 H-NMR (D 2 O, 400MHz): 7.51 (1H, brs), 7.41 (1H,...

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 discloses an application and a detecting method of 3,2'-diaminobenzidine (DAB) and quinoxaline analogues thereof on diacetyl detection and provides a method for detecting content of diacetyl (2,3-butanedione, C4H6O2) in liquid samples by adopting a precolumn derivatization-HPLC (high performance liquid chromatograph) method. The DAB and the quinoxaline analogues thereof are taken as a derivatization reagent to detect the content of the diacetyl in the liquid samples, reaction can be completely performed for 5 minutes at the indoor temperature, and PH (potential of hydrogen) value of the reaction system does not need to be strictly controlled. Compared with an existing precolumn-derivatization-HPLC method, the detecting method has the advantages of moderate derivatization reaction conditions, easiness in operation, rapidness and the like.

Description

technical field [0001] The invention relates to a diacetyl detection method. Background technique [0002] 2,3-Butanedione, also known as diacetyl, is a light yellow to yellow-green liquid at room temperature, with a benzoquinone smell, and a creamy smell in dilute solutions. It exists in fennel oil and cream, is soluble in water, and can be mixed with ethanol, Miscible with ether. [0003] Diacetyl is a degradation product of many components in food such as fatty acids (triglycerides), carbohydrates (sugars), proteins, and nucleic acids. As a natural product in the fermentation process, it exists in fermented dairy products and beverages; An important flavor substance, it is widely used in the production of creamy microwave popcorn, candy, chocolate, baked goods, etc. But when its concentration exceeds a certain range, it will have a negative impact on the flavor of food and has potential hazards to human health. A large number of studies on the negative impact of diacet...

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
IPC IPC(8): G01N30/02G01N30/06C07D241/12C07D241/46
CPCC07D241/12C07D241/46G01N30/02G01N30/06
Inventor 高文运王继宇李恒惠先甘泉
Owner NORTHWEST UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com