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

Method for detecting content of essence in rice product

A product, rice technology, applied in the field of detection of flavor content in rice products, can solve the problems of inaccurate quantification, long detection time, cumbersome processing operations, etc., and achieve the effect of saving manpower and material resources, fewer extraction and purification steps, and better purification effect

Inactive Publication Date: 2019-10-18
SHENZHEN HAIJIXING AGRI PROD TESTING SCI & TECH CENT
View PDF5 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the methods for detecting flavor in rice and cereal products mainly include spectrophotometry, gas chromatography and liquid chromatography. Among them, the detection speed of spectrophotometry is fast but cannot be accurately quantified, while the pretreatment of gas chromatography and liquid chromatography is cumbersome. The detection time is long, and the injection volume is large, which may cause environmental pollution
None of the above methods can meet people's detection requirements for flavor food additives in rice products

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
  • Method for detecting content of essence in rice product
  • Method for detecting content of essence in rice product
  • Method for detecting content of essence in rice product

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0032] The present invention is further described below in conjunction with accompanying drawing and embodiment:

[0033] A method for detecting essence content in rice products, comprising the following steps:

[0034] 1. Sample pretreatment

[0035] The paddy product is pulverized evenly with a mill, and then sieved to remove uncrushed particles to obtain a powdery sample to be tested.

[0036] 2. Extraction

[0037] Add the sample to be tested into the centrifuge tube, add the extraction solvent into the centrifuge tube, then vortex and ultrasonically vibrate.

[0038] Specifically, in this embodiment, accurately weigh 2 g of the sample to be tested, and add it to a 50 mL centrifuge tube, add 5-10 mL of methanol with a concentration of 75% to the centrifuge tube, vortex and mix, and perform ultrasonic oscillation 10-15min.

[0039] Preferably, in this step, 5 ml of methanol solvent with a concentration of 75% can be selected as the extraction solvent.

[0040] 3. Centr...

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

PropertyMeasurementUnit
Particle sizeaaaaaaaaaa
Login to View More

Abstract

The invention discloses a method for detecting content of essence in a rice product in the technical field of agricultural product detection. The method specifically comprises the steps of sample pretreatment, extraction, centrifugation, mixing, purification, filtration, HPLC-MS-MS quantitative determination, and the like, wherein the pH value of a water phase in a liquid chromatographic mobile phase is 2.7. Compared with the traditional liquid chromatographic method, the gas chromatographic method and the like, the method disclosed by the invention is fast, simple and convenient, the extraction and purification steps are few, a large amount of manpower and material resources can be saved, fewer samples and organic extraction solvents can be consumed in the pretreatment process, a better purification effect is achieved, the recovery rate of the method is high, the detection limit is lower, and peaking of 2-acetyl pyrazine in an ion chromatogram is more perfect.

Description

technical field [0001] The invention relates to the technical field of agricultural product detection, in particular to a method for detecting the essence content in rice products. Background technique [0002] Rice products (including rice, wheat, corn, etc.) are the main food of our people. With the improvement of living standards, people have higher and higher requirements for the quality of rice products. People's general welcome. However, the current output of these rice products cannot meet people's daily needs, so some unscrupulous merchants are driven by interests to illegally add flavors to ordinary rice products to pass off these products with geographical indications. [0003] Because the human body takes a large amount of flavor food additives, it will cause symptoms such as dizziness, nausea and vomiting. In severe cases, it will affect the functions of the liver and kidneys, especially for infants and young children who are most sensitive to harmful substances...

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
CPCG01N30/02G01N30/06
Inventor 梁景文苑婷婷姜学涯钟彩丽
Owner SHENZHEN HAIJIXING AGRI PROD TESTING SCI & TECH CENT
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