Poultry egg freshness comprehensive index detection method based on visible/near-infrared spectroscopy

A near-infrared spectrum and comprehensive index technology, which is applied in the field of optics and agricultural product detection, can solve the problems of increasing workload and calculation, overlapping information, and affecting statistical analysis results, etc.

Inactive Publication Date: 2018-12-14
CHINA AGRI UNIV
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

The single-index detection of multiple poultry egg freshness will increase the workload and calculation, and ...

Method used

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  • Poultry egg freshness comprehensive index detection method based on visible/near-infrared spectroscopy
  • Poultry egg freshness comprehensive index detection method based on visible/near-infrared spectroscopy
  • Poultry egg freshness comprehensive index detection method based on visible/near-infrared spectroscopy

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Embodiment 1

[0055] Embodiment 1. Egg freshness comprehensive indicator detection device based on visible / near-infrared spectrum

[0056] 1. Egg freshness comprehensive indicator detection device based on visible / near-infrared spectroscopy

[0057] Such as figure 1 As shown, the egg freshness comprehensive index detection device based on visible / near-infrared spectrum in the present embodiment is composed of the following components:

[0058]The spectrum acquisition unit includes an optical fiber 1 , a light source 4 and a spectrometer 8 . The optical fiber 1 is placed under the sample to be tested, one end of the optical fiber 1 is fixed on the probe bracket 2 for collecting spectral information, and the other end is connected to the spectrometer 8 to transmit the optical signal to the spectrometer 8; the model of the spectrometer 8 is USB2000+ (Ocean Optics), its The detection band is 330nm-1100nm, one end of which is connected to the optical fiber 1, and the other end is connected to ...

Embodiment 2

[0070] Embodiment 2, egg freshness comprehensive index detection method based on visible / near-infrared spectrum

[0071] 1 Sample preparation

[0072] Take 91 fresh eggs of the same variety within 24 hours postpartum, place them in the same environment, divide them into 13 groups, and perform spectra on days 0, 1, 3, 5, 7, 8, 10, 12, 13, 16, 1, 19 and 21 Detection and physical and chemical testing of freshness.

[0073] 2 Collection of sample spectral information

[0074] Egg spectrum acquisition adopts the transmission method. The egg is placed horizontally on the circular hole in the middle of the sample stage, and the rotation angle is 0°, 60°, 120°. After standing still, the spectral information of the sample is collected, and the spectrum is saved in the spectrum acquisition software. , and finally take the average value of the three spectral information as the spectral information value of the sample.

[0075] 3 Calculation of comprehensive index of egg freshness

[...

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Abstract

The invention provides a poultry egg freshness comprehensive index detection method based on the visible/near-infrared spectroscopy, which comprises the steps of: R1, sample preparation; R2, spectralinformation acquisition; R3, poultry egg freshness comprehensive index calculation; R4, establishment of a discrimination model; and R5, determination of an optimal prediction model. The invention further provides a poultry egg freshness comprehensive index detection method based on the visible/near-infrared spectroscopy, which is used for implementing the method. Experiments prove that accordingto the poultry egg freshness comprehensive index detection method and device based on the visible/near-infrared spectroscopy, which are provided by the invention, a related coefficient predicted by the determined optimal model can reach 0.868.

Description

technical field [0001] The invention relates to the field of optics and agricultural product detection, in particular to a method for detecting comprehensive indicators of poultry egg freshness based on visible / near-infrared spectrum. Background technique [0002] Poultry eggs can provide rich protein, fat, minerals, phospholipids and vitamins for the human body, and are an ideal animal protein food. During the storage process, poultry eggs exchange gas with the outside world through the pores of the eggshell, and the egg white and egg yolk migrate water and minerals. Both the physical and chemical composition and nutritional composition of poultry eggs change: the volatilization of water inside and outside the eggshell causes the egg weight to decrease and the air chamber to increase, the water exchange between the egg white and the egg yolk causes the yolk coefficient to decrease, and the change of ovomucin makes the egg white thinner. The rate of deterioration of poultry...

Claims

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Application Information

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IPC IPC(8): G01N21/359G01N21/31
CPCG01N21/31G01N21/359
Inventor 汤修映董晓光董俊鲁兵
Owner CHINA AGRI UNIV
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