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Method for detecting freshness of mangos by aid of electronic nose

A freshness, electronic nose technology, applied in the direction of material resistance, can solve the problems of poor reliability of detection results and slow detection speed, and achieve the effect of fast detection speed and good reliability

Inactive Publication Date: 2012-08-01
ZHEJIANG GONGSHANG UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to overcome the shortcomings of the existing mango freshness detection methods, such as slow detection speed and poor reliability of detection results, the present invention provides a method for detecting mango freshness using an electronic nose with fast detection speed and good reliability of detection results

Method used

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  • Method for detecting freshness of mangos by aid of electronic nose
  • Method for detecting freshness of mangos by aid of electronic nose
  • Method for detecting freshness of mangos by aid of electronic nose

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Embodiment Construction

[0024] The present invention will be further described below in conjunction with the accompanying drawings.

[0025] refer to figure 1 and figure 2 , a kind of method utilizing electronic nose to detect the freshness of mango, comprises the following steps:

[0026] (1) Put the mango to be tested in a sealed container and let it stand at room temperature for 30-60 minutes;

[0027] (2) At normal temperature, use the sampling needle of electronic nose to suck the gas in the sealed container, and the suction time is 30-60 seconds, and the gas is detected through the gas sensor array in the electronic nose device; the gas sensor array is composed of sulfide sensor , hydrogen sensor, ammonia sensor, alcohol, toluene, xylene and other sensors, hydrocarbon gas sensor, methane, propane, butane sensor, propane, butane sensor, nitrogen oxide sensor;

[0028] (3) Collect the data collected by the gas sensor array, and detect the signal-to-noise ratio characteristic value SNR of the ...

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Abstract

A method for detecting the freshness of mangos by the aid of an electronic nose includes (1), placing a mango to be detected in a sealed container and allowing the mango to stand at normal temperature for 30 to 60 minutes; (2), sucking gas in the sealed container by a sample feeding needle of the electronic nose at the normal temperature for 30 to 60 seconds, and detecting the gas via a gas sensor array in the electronic nose; and (3), collecting data acquired by the gas sensor array, processing the acquired data, obtaining a freshness detection value and evaluating the freshness grade of themango according to preset corresponding relation of freshness grades and a threshold value range. The method has the advantages that detection speed is fast, and the reliability of detection results is fine.

Description

technical field [0001] The invention relates to a method for detecting the freshness of mangoes. Background technique [0002] Mango is an evergreen tree native to India, with leathery leaves and alternate; warm in nature, small flowers, yellow or light red, terminal panicles, mangoes and inferior light gray wood. Mango fruit contains sugar, protein, and crude fiber. The precursor carotene of vitamin A contained in mango is particularly high, which is rare in all fruits. Secondly, the vitamin C content is not low. Minerals, proteins, fats, sugars, etc. are also its main nutrients. Mango is one of the famous tropical fruits. Because of its delicate flesh and unique flavor, it is deeply loved by people, so it is known as the "king of tropical fruits". [0003] The maturity of mango is often judged by the color of the peel from green to light yellow or purple red, the fruit spots or patterns are obvious, the fruit shoulders are round and full, the flesh changes from white to...

Claims

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Application Information

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IPC IPC(8): G01N27/12
Inventor 惠国华吴玉玲叶丹丹丁文雯
Owner ZHEJIANG GONGSHANG UNIVERSITY
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