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Method for detecting freshness of grass carp by using electronic nose

A freshness, electronic nose technology, applied in the direction of material resistance, etc., can solve the problems of sensor baseline drift, cumbersome process, long time consumption, etc., to achieve the effect of short detection time, simple analysis process, and simplified detection operation process

Inactive Publication Date: 2012-07-18
ZHEJIANG GONGSHANG UNIVERSITY
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0006] The purpose of the present invention is to provide a simple, fast and effective method for detecting the freshness of grass carp using an electro

Method used

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  • Method for detecting freshness of grass carp by using electronic nose
  • Method for detecting freshness of grass carp by using electronic nose
  • Method for detecting freshness of grass carp by using electronic nose

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Embodiment Construction

[0048] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0049] Such as figure 1 The illustrated embodiment is a method for detecting the freshness of grass carp using an electronic nose. The electronic nose system mainly includes a data acquisition, conditioning and transmission unit, a sensor array, an air chamber, and an air supply power device. It is equipped with Air filter with activated carbon. The core device of the data acquisition, conditioning and transmission unit adopts an embedded microcontroller, which can realize functions such as sensor array signal acquisition and transmission, and pump valve opening control. The gas supply power unit includes gas sampling pump, cleaning pump, solenoid valve and other components. When the electronic nose test system is tested, the air chamber cleaning pump sends the pure air generated by the filter into the sensor air chamber to calibrate the sens...

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Abstract

The invention discloses a method for detecting freshness of grass carp by using an electronic nose. The method comprises the following steps of: putting a grass carp sample to be detected into a sample container, and standing for 30 minutes; inserting a sample introduction needle of the electronic nose into the sample container at normal temperature, simultaneously inserting an air filter filled with active carbon into the sample container to balance air pressure, and starting the electronic nose to suck the gas emitted by the stood sample into an electronic nose gas chamber; detecting the gas emitted by the sample through a gas sensor array in the electronic nose gas chamber for 50 seconds; and acquiring data acquired by the gas sensor array, processing the acquired data, and assessing the freshness of the grass carp according to the data processing result. The method has the advantages of being simple in analysis process, low in sample consumption, accurate and low in cost, and easy to popularize.

Description

technical field [0001] The invention relates to the field of detection of fish freshness, and more specifically relates to a method for detecting the freshness of grass carp by using an electronic nose based on a gas sensor array. Background technique [0002] Grass carp (Grass carp) is one of the four major species of freshwater farmed fish in China. Grass carp meat is sweet, warm, non-toxic, and has the effect of warming the stomach and harmonizing the stomach. The meat is fat and tender, delicious, and has high nutritional value. [0003] Freshness is an important indicator of the quality of fish or fish products and is very important for the final quality of the product. A series of indicators and methods have been developed to evaluate the freshness of fish meat, such as sensory evaluation methods, microbiological methods, physical and chemical methods, etc., but the above detection methods are difficult to meet the requirements of accurate and rapid detection. There ...

Claims

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Application Information

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IPC IPC(8): G01N27/04
Inventor 惠国华王绿野磨艳红张凌霞
Owner ZHEJIANG GONGSHANG UNIVERSITY
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