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

Method for rapidly and qualitatively detecting freshness of peanuts without damage

A technology for freshness and peanuts, which is applied in the field of qualitative and non-destructive rapid detection of peanut freshness, can solve the problems of difficult cleaning of the instrument, difficulty in forming a unified standard, high operating requirements, etc., and achieve the effect of non-destructive testing

Active Publication Date: 2014-06-11
ZHEJIANG UNIV
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when using the above methods for freshness detection, there are some problems: the results of sensory evaluation are greatly affected by personal and environmental factors, and it is difficult to form a unified standard; while the determination of acid value and peroxide value takes a long time and requires high operation. And the instrument is not easy to clean

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 rapidly and qualitatively detecting freshness of peanuts without damage
  • Method for rapidly and qualitatively detecting freshness of peanuts without damage
  • Method for rapidly and qualitatively detecting freshness of peanuts without damage

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] The invention is suitable for detecting the freshness of peanuts. In the example of the present invention, the processed fresh peanuts, the untreated fresh peanuts and the aged peanuts of the previous year are used as detection samples, and the FOX4000 electronic nose of the French AlphaMOS company is used as a detection instrument to describe in detail. The electronic nose system is composed of 18 metal oxide sensors, whose models and response characteristics are shown in Table 1:

[0019] Table 1 Response characteristics of each sensor of FOX4000

[0020]

[0021] Wash the surface of the fresh peanuts of the current year and the aged peanuts of the previous year with distilled water, dry the water and place them in a cool place. After the water evaporates completely, select the fresh peanuts of the current year and the aged peanuts of the previous year Reserve peanuts.

[0022] Wash the surface of the untreated fresh peanuts of the year with distilled water, dry ...

Embodiment 2

[0050] Embodiments of the present invention are not specifically described, and are the same as Embodiment 1. Wash the surface of the untreated fresh peanuts of the year with distilled water, dry the water and place it in a cool place. After the water evaporates completely, select the fresh peanuts of the year with the shell intact and undamaged, and perform the electronic nose test according to the following steps: Take 20g ( 7 pieces) Fresh peanuts were placed in a 200ml beaker, sealed with a parafilm at room temperature and left to stand for 45 minutes, then 2ml of headspace gas was extracted, manually injected, and the detection time was set to 150 seconds. The maximum value of each sensor response value was selected as the fresh peanut module. According to the same steps, the electronic nose is used to detect the aged peanuts of the previous year, and the maximum value of the response value of each sensor is selected as the aged peanut module.

[0051] Separately take th...

Embodiment 3

[0054] Embodiments of the present invention are not specifically described, and are the same as Embodiment 1. Take 30g (11 pieces) of fresh peanuts and put them in a 200ml beaker, seal it with a parafilm at room temperature and let it stand for 30 minutes, extract 2ml of headspace gas, manually inject the sample, and set the detection time to 180 seconds. The maximum value of each sensor response value was selected as the fresh peanut module. According to the same steps, the electronic nose is used to detect the aged peanuts of the previous year, and the maximum value of the response value of each sensor is selected as the aged peanut module.

[0055] Separately take the fresh peanuts of the current year and the aged peanuts of the previous year as samples to be tested. The specific operation steps are as follows: take 4 fresh peanuts of the current year, numbered 1 to 4; take 4 aged peanuts of the previous year, numbered 5 to 8; Take 2 fresh peanuts of the year and place the...

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 a method for rapidly and qualitatively detecting the freshness of peanuts without damage. The method comprises the steps of selecting clean peanuts with complete and undamaged case as samples, detecting the generated top air by using an electronic nose; selecting the maximum value of response values of sensors as initial data, defining the original data of the response value of fresh peanuts as a fresh peanut module, defining the initial data of the response values of matured peanuts as a matured peanut module, and defining the initial data of the response values of peanuts to be detected as an unknown module; analyzing the fresh peanut module and the matured peanut module by data processing software, and judging the freshness of the peanuts to be detected in the unknown module by combining the analysis result. According to the method, the smell of the peanuts with cases can be detected, so that the rapid, convenient and undamaged detection of the freshness of the peanuts can be realized truly for the first time.

Description

technical field [0001] The invention relates to a method for qualitative, non-destructive and rapid detection of peanut freshness. Background technique [0002] Fresh peanuts taste sweet and are rich in fat and protein. As time goes by, the taste and nutritional value of peanuts begin to decrease gradually, and peanuts with low freshness will also appear rancid and deteriorated. Peanuts with different degrees of freshness can hardly be distinguished with the naked eye under the condition of shelling; while under the condition of shelling, although the two groups of peanuts can be distinguished by comparing the color depth of the shell, the actual operation is more difficult. At present, scholars at home and abroad generally use sensory evaluation or comprehensive determination of acid value and peroxide value when testing the freshness of peanuts. However, when using the above methods for freshness detection, there are some problems: the results of sensory evaluation are gr...

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 Patents(China)
IPC IPC(8): G01N33/02
Inventor 王俊叶蔺霜
Owner ZHEJIANG 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