CN107543848A - A kind of milk objectionable impurities detection means based on electronic tongues - Google Patents
A kind of milk objectionable impurities detection means based on electronic tongues Download PDFInfo
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- CN107543848A CN107543848A CN201710518080.3A CN201710518080A CN107543848A CN 107543848 A CN107543848 A CN 107543848A CN 201710518080 A CN201710518080 A CN 201710518080A CN 107543848 A CN107543848 A CN 107543848A
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Abstract
The present invention provides a kind of milk objectionable impurities detection means based on electronic tongues, including electronic tongues module, analysis and processing module, display module；The electronic tongues module includes electrode unit and signal conditioning unit；The electrode unit includes aflatoxin detecting electrode, antibiotic detecting electrode, melamine detecting electrode, temperature detection electrode；The signal conditioning unit includes signal amplification circuit, filtering and noise reduction circuit, A/D change-over circuits；The analysis and processing module includes receiving unit, pretreatment unit, computing unit, temperature compensation unit；The electronic tongues module is electrically connected with the analysis and processing module, and the analysis and processing module electrically connects display module.The objectionable impurities that the possibility of milk contains can quickly be detected by the present apparatus, effectively shorten detection cycle, reduce testing cost, accuracy, the reliability of detection are high.
Description
Technical field
The present invention relates to field of detection of food safety, and in particular to a kind of milk objectionable impurities detection dress based on electronic tongues
Put.
Background technology
Milk is one of most ancient natural drink, is described as " white blood ", the importance of human body is well imagined.Ox
Milk contains abundant mineral matter, calcium, phosphorus, iron, zinc, copper, manganese, and milk is the best source of human calcium, and calcium phosphorus ration is non-
Often it is adapted to, beneficial to the absorption of calcium.With the rapid development of dairy industry, the Dairy Enterprise in China also specify the purchase of raw milk
Standard, the survey to the butterfat percnetage of raw milk, protein ratio, total solids, microbial count, antibiotic content, adulterated material etc.
It is set for the judgment criteria for raw milk.But some illegal businessmans are by the trend of interests, mixed in milk water, starch, thin rice gruel,
The materials such as dextrin, melamine.More also due to mouldy feed feeding milk cow, or in the process of manufacture of milk
Degerming technique is leaky, causes substantial amounts of aflatoxin to enter in milk.Antibiotic etc is widely used in preventing and treating disease
Disease or as feed addictive, inevitably result in residual of the antibiotic in milk.The antibiotic meeting of Residues in Milk
The health of drinking person is endangered, antibody-resistant bacterium is produced in induction human body, is excreted in environment and causes environmental pollution, it is also possible to deposit
In certain toxic side effect.The antibiotic medicine mainly remained in milk at present has chloramphenicol.Furantoin etc..
Generally use physical and chemical inspection method, instrumental method and PCA detect to milk quality；But manage
Changing method of inspection and instrumental method has the deficiencies of time-consuming, cost is high, trivial operations, and inspector is typically both needed to through specialty
Training；Therefore, how fast and accurately to detect milk quality is the problem for needing to solve at present.
The content of the invention
It is an object of the invention to provide a kind of milk objectionable impurities detection means based on electronic tongues, prior art is overcome
Time-consuming for middle detection method, cost is high, is difficult to the deficiency of one-time detection many kinds of substance.
The present invention provides a kind of milk objectionable impurities detection means based on electronic tongues, including at electronic tongues module, analysis
Manage module, display module；The electronic tongues module be used for acquisition testing sample electric signal, the analysis and processing module be used for pair
The electric signal is analyzed, handled, and the display module is used to show described testing result.
Further, the electronic tongues module includes electrode unit and signal conditioning unit；The electrode unit is used to obtain
Electric signal corresponding to the testing sample intermediate ion concentration is taken, the signal conditioning unit is used for the telecommunications to the electrode unit
Number carry out processing regulation.
Further, the electrode unit includes aflatoxin detecting electrode, using the modification of PdAu nanocubes
Glass-carbon electrode is working electrode, and saturated calomel electrode is reference electrode, and platinum electrode is in milk to the three-electrode system of electrode
Aflatoxin is detected.
Further, the electrode unit includes antibiotic detecting electrode, uses with vertical orderly cetyl trimethyl
The micelle modified glass-carbon electrode of ammonium bromide is working electrode, and platinum electrode and silver/silver chlorate are right respectively to electrode and reference electrode
Antibiotic is used for quickly detecting in milk.
Further, the electrode unit includes melamine detecting electrode, using Au/DTT/Au@Ag CS NPs/L-
Cys modified electrodes are working electrode, and platinum electrode is to electrode, and saturated calomel electrode is the three-electrode system of reference electrode to milk
Middle melamine is detected.
Further, the electrode unit also includes temperature detection electrode.
Further, the signal conditioning unit includes signal amplification circuit, filtering and noise reduction circuit, A/D change-over circuits.
Further, the analysis and processing module includes receiving unit, pretreatment unit, computing unit, temperature-compensating list
Member.
The electronic tongues module is electrically connected with the analysis and processing module, and the analysis and processing module electrical connection shows mould
Block；Aflatoxin detecting electrode, antibiotic detecting electrode, melamine detection in the electronic tongues module in electrode unit
The signal amplification circuit in signal conditioning unit, the signal amplification circuit electricity is electrically connected in electrode, temperature detection electrode
Connect filtering and noise reduction circuit, filtering and noise reduction circuit electrical connection A/D modular converters, the A/D modular converters electrical connection analysis
Processing module, the analysis and processing module electrical connection display module carry out result and shown.
The beneficial effects of the present invention are：The present invention provides a kind of milk objectionable impurities detection means based on electronic tongues,
The objectionable impurities that the possibility of milk contains can be quickly detected, effectively shortens detection cycle, reduce testing cost, detection
Accuracy, reliability are high.
Brief description of the drawings
Fig. 1 is a kind of milk objectionable impurities detection means schematic diagram based on electronic tongues of the present invention；
Fig. 2 is a kind of electronic tongues module composition signal of milk objectionable impurities detection means based on electronic tongues of the present invention
Figure；
Fig. 3 is a kind of component connection diagram of the milk objectionable impurities detection means based on electronic tongues of the present invention.
Embodiment
In order that the purpose of the present invention, technical scheme are clearer, below in conjunction with the accompanying drawings and embodiment, the present invention is carried out
Detailed description.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, it is not used to limit this hair
It is bright.
The present invention provides a kind of milk objectionable impurities detection means based on electronic tongues, as shown in figure 1, including electronic tongues mould
Block, analysis and processing module, display module；The electronic tongues module is used for the electric signal of acquisition testing sample, the analyzing and processing
Module is used to analyze the electric signal, handle, and the display module is used to show described testing result.
Fig. 2 is that a kind of embodiment device of the milk objectionable impurities detection means based on electronic tongues provided by the invention shows
It is intended to.
As shown in Fig. 2 a kind of milk objectionable impurities detection means based on electronic tongues, the electronic tongues module include
Electrode unit and signal conditioning unit；The electrode unit is used to obtain telecommunications corresponding to the testing sample intermediate ion concentration
Number, the signal conditioning unit is used to carry out processing regulation to the electric signal of the electrode unit.The analysis and processing module bag
Include receiving unit, pretreatment unit, computing unit, temperature compensation unit.
Electrode unit includes aflatoxin detecting electrode, antibiotic detecting electrode, melamine detecting electrode, temperature inspection
Electrode is surveyed, the aflatoxin in milk sample to be measured, antibiotic, melamine, temperature are detected.
Aflatoxin detecting electrode, using the glass-carbon electrode that PdAu nanocubes are modified, saturation is sweet for working electrode
Mercury electrode is reference electrode, and platinum electrode is to electrode.The aflatoxin detecting electrode aflatoxin content 0.1~
There is good linear relationship, linear equation is ρ (μ g/L)=8.41-2.33I (μ A), correlation coefficient r in the range of 12 μ g/L2=
0.982。
Antibiotic detecting electrode, use using it is vertical in order the micelle modified glass-carbon electrode of cetyl trimethylammonium bromide as
Working electrode, platinum electrode and silver/silver chlorate are respectively that the detection range is 0.4~50ppm to electrode and reference electrode.
Melamine detecting electrode, Au/DTT/Au@Ag CS NPs/L-Cys modified electrodes are used as working electrode, platinum electricity
Extremely to electrode, saturated calomel electrode is reference electrode, and melamine concentration is 1.0 × 10-7~1.0 × 10-2Mol/L scopes
When interior, impedance value is linear with log concentration, and its linear equation is c (mol/L)=1049.7+56.75Z (Ω), linearly
Coefficient correlation is 0.9976.
The temperature of temperature detection electrode pair detection milk sample is detected, and by temperature data to aspergillus flavus poison
Element, antibiotic, the detection data of melamine carry out temperature-compensating correction.
The signal conditioning unit includes signal amplification circuit, filtering and noise reduction circuit, A/D change-over circuits.Signal amplification electricity
Road is used to be amplified the signal of electrode outflow, reaches signal acquisition demand, generally 1000 times of amplification；Filtering and eliminating noise acoustic-electric
Road, the signal after amplification is filtered except noise processed, makes its more stable, filtered in the present embodiment using 8 rank Chebyshevs
Device is handled.A/D change-over circuits are used to filtered analog signal carrying out A/D conversion process, become data signal.
Receiving unit is used for the electric signal for receiving the collection of electronic tongues module in analysis and processing module；Pretreatment unit be used for pair
The electric signal of reception carries out preliminary treatment, the mould established between aflatoxin, antibiotic, the concentration of melamine and electric signal
Type；Computing unit is used for the model established by above-mentioned pretreatment unit and the aflatoxin of detection, antibiotic, three is calculated
The concentration of poly cyanamid；Temperature compensation unit is carried out to the concentration of the above-mentioned aflatoxin being calculated, antibiotic, melamine
Temperature-compensating correction, the aflatoxin finally detected, antibiotic, the concentration of melamine.
Display module detects above-mentioned through electronic tongues module, and analysis and processing module handles obtained aflatoxin, antibiosis
Element, the concentration information of melamine are shown on a display screen.
As shown in figure 3, when being detected using apparatus of the present invention, electronic tongues module contacts with milk sample to be measured, electricity
Pole unit enters the collection of horizontal electrical signal to milk to be measured, and the signal that signal conditioning unit gathers to electrode unit is amplified, filtered
Ripple denoising, then analog-to-digital conversion is carried out through A/D change-over circuits, data signal is converted to, the data signal being converted to is passed
Pass the receiving unit of analysis and processing module, electric signal is passed to pretreatment unit and establishes aflatoxin, anti-by receiving unit
Aflatoxin, antibiotic, trimerization is calculated in model between raw element, the concentration of melamine and electric signal, computing unit
The concentration of cyanamide, and temperature compensation unit carries out temperature-compensating correction, show that final testing result is shown in display module
On.By the device of the present invention, the aflatoxin, antibiotic, melamine of milk sample to be measured can be quickly and accurately obtained
The concentration and temperature of amine.
Above is the preferable implementation to the present invention is illustrated, but the invention is not limited to the implementation
Example, those skilled in the art can also make a variety of equivalent variations on the premise of without prejudice to spirit of the invention or replace
Change, these equivalent deformations or replacement are all contained in the application claim limited range.
Claims (4)
- A kind of 1. milk objectionable impurities detection means based on electronic tongues, it is characterised in that：Including electronic tongues module, analyzing and processing Module, display module；The electronic tongues module includes electrode unit and signal conditioning unit；The electrode unit includes aspergillus flavus Mycotoxin identification electrode, antibiotic detecting electrode, melamine detecting electrode, temperature detection electrode；The signal conditioning unit bag Include signal amplification circuit, filtering and noise reduction circuit, A/D change-over circuits；The analysis and processing module includes receiving unit, pretreatment list Member, computing unit, temperature compensation unit；The electronic tongues module is electrically connected with the analysis and processing module, and the analysis and processing module electrically connects display module；Institute State aflatoxin detecting electrode in electronic tongues module in electrode unit, antibiotic detecting electrode, melamine detecting electrode, The signal amplification circuit in signal conditioning unit, the signal amplification circuit electrical connection filter is electrically connected in temperature detection electrode Ripple squelch circuit, the filtering and noise reduction circuit electrically connect A/D modular converters, the A/D modular converters electrical connection analyzing and processing mould Receiving unit in block, the receiving unit electrically connect pretreatment unit, and the pretreatment unit electrically connects the computing unit, The computing unit electrically connects temperature compensation unit, and the temperature compensation unit is electrically connected the display module.
- A kind of 2. milk objectionable impurities detection means based on electronic tongues according to claim 1, it is characterised in that：It is described Aflatoxin detecting electrode, using the glass-carbon electrode that PdAu nanocubes are modified, saturated calomel electrode is for working electrode Reference electrode, platinum electrode are to electrode.
- A kind of 3. milk objectionable impurities detection means based on electronic tongues according to claim 1, it is characterised in that：It is described Antibiotic detecting electrode, use using the vertical micelle modified glass-carbon electrode of cetyl trimethylammonium bromide in order as work electricity Pole, platinum electrode and silver/silver chlorate are respectively to electrode and reference electrode.
- A kind of 4. milk objectionable impurities detection means based on electronic tongues according to claim 1, it is characterised in that：It is described Melamine detecting electrode, Au/DTT/Au@Ag CS NPs/L-Cys modified electrodes are used as working electrode, platinum electrode is to electricity Pole, saturated calomel electrode are reference electrode.
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| CN201710518080.3A CN107543848A (en) | 2017-06-29 | 2017-06-29 | A kind of milk objectionable impurities detection means based on electronic tongues |
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| CN201710518080.3A CN107543848A (en) | 2017-06-29 | 2017-06-29 | A kind of milk objectionable impurities detection means based on electronic tongues |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110146575A (en) * | 2019-06-13 | 2019-08-20 | 重庆大学 | Temperature, Concentration Testing and automatic control device based on three electrode chemical systems |
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| CN102507675A (en) * | 2011-10-24 | 2012-06-20 | 长江师范学院 | Electronic tongue-based device for detecting salinity of hot pickled mustard tuber |
| CN102914584A (en) * | 2012-09-29 | 2013-02-06 | 南昌大学 | Rapid detection system and detection method for lactogenesis mixing |
| CN106841346A (en) * | 2016-12-22 | 2017-06-13 | 山东理工大学 | A kind of palm aflatoxin fast detector based on Internet of Things |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110146575A (en) * | 2019-06-13 | 2019-08-20 | 重庆大学 | Temperature, Concentration Testing and automatic control device based on three electrode chemical systems |
| CN110146575B (en) * | 2019-06-13 | 2020-07-14 | 重庆大学 | Temperature and concentration detection and automatic control device based on three-electrode chemical system |
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