Identification method for nitrogen-containing compound in Biluochun green tea

A nitrogen compound and identification method technology, applied in the field of analysis and detection, can solve the problems of inaccurate composition and concentration of nitrogen-containing compounds, and achieve the effect of meeting the needs of rapid detection in production, wide applicability, and simple operation

Inactive Publication Date: 2016-12-14
SHANGHAI INST OF TECH
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] For the above-mentioned technical problems in the prior art, the invention provides a kind of identification method of nitrogen-containing compound in Biluochun green tea, describ

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
  • Identification method for nitrogen-containing compound in Biluochun green tea
  • Identification method for nitrogen-containing compound in Biluochun green tea
  • Identification method for nitrogen-containing compound in Biluochun green tea

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] This method mainly uses headspace solid-phase microextraction combined with gas chromatography-nitrogen and phosphorus detector-mass spectrometry to quickly detect and qualitatively quantify nitrogen-containing compounds in Biluochun green tea. The specific steps are as follows:

[0021] 1) Extract nitrogen-containing compounds in Biluochun green tea: 1) Weigh 80g of deionized water into a 250ml Erlenmeyer flask, heat the deionized water to 80°C for later use; 2) Accurately weigh 80g of commercially available Biluochun green tea, pour the tea sample into into the deionized water prepared in step 1), shake well and soak. 3) Soaking takes 10 minutes in total, and the conical flask needs to be shaken every 2 minutes during the process to shake the tea leaves evenly. 4) After soaking is completed, filter through a sieve, and then rapidly cool the filtered tea soup to room temperature. 5) Take 5g of cooled tea soup, add 1g of sodium chloride and 20μL of 2-methoxy-3-methylpy...

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 provides an identification method for a nitrogen-containing compound in Biluochun green tea and belongs to the technical field of analysis and detection. The method comprises the steps of extracting the nitrogen-containing compound in Biluochun green tea; detecting and analyzing the nitrogen-containing compound in the Biluochun green tea by means of the gas chromatography-nitrogen-phosphorus detector-mass spectrum combined technology, and performing qualitative analysis. Headspace solid phase microextraction is adopted for being combined with the gas chromatography-nitrogen-phosphorus detector-mass spectrum combined technology for analyzing the nitrogen-containing compound in a Biluochun green tea sample, and the qualitative and quantitative analysis method for the nitrogen-containing compound in the Biluochun green tea is simple and easy to implement and wide in application range.

Description

technical field [0001] The invention belongs to the technical field of analysis and detection, and in particular relates to a method for analyzing nitrogenous compounds in tea leaves, in particular to a method for detecting nitrogenous compounds in Biluochun green tea. Background technique [0002] Biluochun green tea is a traditional famous tea in my country. It has a history of more than 1,000 years. Its technological process is divided into four steps: fresh leaves, greening, rolling and drying. It has the characteristics of slender cords, curled into snails, covered with hairs, silvery white and emerald green, rich aroma, fresh and mellow taste, clear green soup, bright green and bright leaves at the bottom, and special floral and fruity fragrance, which is deeply loved by people. Consumer favorite. [0003] Nitrogen-containing compounds in Biluochun green tea, like other substances, are important factors that constitute Biluochun green tea, and determine the flavor and...

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): G01N30/02G01N30/06
CPCG01N30/02G01N30/06G01N2030/062
Inventor 肖作兵吴曲阳牛云蔚朱建才
Owner SHANGHAI INST OF TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap