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Olive oil quality identification device and method based on three-dimensional fluorescence characteristic peak

A three-dimensional fluorescence and quality identification technology is applied in the field of olive oil quality identification devices based on three-dimensional fluorescence characteristic peaks, and achieves the effect of low requirements and favorable for popularization and application.

Active Publication Date: 2021-03-16
NINGBO UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a device and method for identifying olive oil quality based on three-dimensional fluorescence characteristic peaks, so as to solve the problem of rapid identification of olive oil quality;

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  • Olive oil quality identification device and method based on three-dimensional fluorescence characteristic peak
  • Olive oil quality identification device and method based on three-dimensional fluorescence characteristic peak
  • Olive oil quality identification device and method based on three-dimensional fluorescence characteristic peak

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Embodiment 1

[0035] Such as figure 1 Shown, a kind of olive oil quality appraisal device based on three-dimensional fluorescence characteristic peak of the present invention comprises:

[0036] Sample cell for placing preset olive oil samples;

[0037] light source for exciting the fluorescence of the preset olive oil sample;

[0038] A filter wheel, wherein filters of a plurality of preset wavelengths are arranged for filtering the fluorescence generated by the preset olive oil sample into fluorescence of different wavelength ranges;

[0039] A lens is arranged between the filter wheel and the sample pool, and the lens is used to converge the fluorescence generated by the preset olive oil sample;

[0040] The photodetector is used to collect filtered fluorescent spectra in different wavelength ranges, and convert the collected fluorescent spectra into electrical signals;

[0041] The signal processing module is used to perform preset processing on the electrical signal converted by the...

Embodiment 2

[0055] Such as image 3 Shown, a kind of olive oil quality identification method based on three-dimensional fluorescence characteristic peak of the present invention comprises steps:

[0056] S1, using a light source to excite the fluorescence of the preset olive oil sample;

[0057] S2. Filtering the fluorescence generated by the preset olive oil sample into fluorescence in a preset wavelength range through a filter;

[0058] S3. Collecting a filtered fluorescence spectrum in a predetermined wavelength range from a direction perpendicular to the light source through a photodetector;

[0059] S4. Calculate the quality factor of the preset olive oil sample through the preset fluorescence integral ratio algorithm according to the collected fluorescence spectrum;

[0060] The formula for calculating the olive oil quality factor N according to the preset fluorescence integral ratio algorithm is:

[0061]

[0062] Among them, λ i , lambda h , lambda j , lambda k , lambda ...

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Abstract

The invention belongs to the technical field of edible oil detection, and provides an olive oil quality identification device based on a three-dimensional fluorescence characteristic peak. The devicecomprises a light source, an optical filter wheel, a photoelectric detector and a microprocessor, wherein the light source is used for exciting fluorescence of a preset olive oil sample; a plurality of optical filters with preset wavelengths are arranged in the optical filter wheel, and the optical filter wheel is used for filtering fluorescence generated by the preset olive oil sample into fluorescence with different wavelengths; the photoelectric detector is used for collecting the filtered fluorescence spectra with different wavelengths and converting the collected fluorescence spectra intoelectric signals; and the microprocessor is used for calculating an olive oil quality factor of the processed electric signals according to a preset fluorescence integral ratio algorithm. Compared with other algorithms combining three-dimensional fluorescence spectra with chemometrics, the olive oil quality identification device has the advantages of being high in correlation, low in analysis algorithm complexity, and low in requirements for optical devices and electronic devices for instrument research and development and software algorithms, the low-cost olive oil quality identification device is more conducive to popularization and application, and great benefits are brought to a huge market supervision gap.

Description

technical field [0001] The invention relates to the technical field of edible oil detection, in particular to an olive oil quality identification device and method based on three-dimensional fluorescent characteristic peaks. Background technique [0002] At present, there is a huge amount of extra virgin olive oil consumed in the world, and various olive oils of different qualities are labeled as extra virgin olive oil and sold in the market, seriously infringing on the interests of consumers. [0003] However, the traditional olive oil detection method requires pretreatment of the oil sample and various imported large-scale biochemical instruments to complete the detection of various indicators in the national standard of olive oil. The detection threshold, economic cost, and time cost are very high. Only a few qualified food testing centers have the ability to complete the relevant testing, which seriously restricts the supervision of the olive oil market. From the compar...

Claims

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Application Information

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IPC IPC(8): G01N21/64
CPCG01N21/6402
Inventor 丁志群
Owner NINGBO UNIVERSITY OF TECHNOLOGY