CN106770141A - Edible oil quality detection method, equipment and system - Google Patents
Edible oil quality detection method, equipment and system Download PDFInfo
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- CN106770141A CN106770141A CN201710110085.2A CN201710110085A CN106770141A CN 106770141 A CN106770141 A CN 106770141A CN 201710110085 A CN201710110085 A CN 201710110085A CN 106770141 A CN106770141 A CN 106770141A
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- edible oil
- oil
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- edible
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/62—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light
- G01N21/63—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light optically excited
- G01N21/64—Fluorescence; Phosphorescence
Abstract
A kind of method for detecting edible oil quality is disclosed, it includes：Detect the risks and assumptions of edible oil；Detect the health factor of edible oil；Risks and assumptions and health factor based on the edible oil for being detected, determine the oil product scoring of edible oil；And scored according to the oil product of identified edible oil, determine the quality of edible oil.Also disclose that the equipment and system for detecting edible oil quality in this way.
Description
Technical field
The invention belongs to technical field of food detection, in particular it relates to a kind of edible oil quality detection method, equipment and be
System.
Background technology
Edible oil is that resident uses most common flavouring, while being again the medium for heating raw material, has seasoning and heat transfer concurrently
Effect.Edible oil as needed by human body one of important nutrient, be our daily life indispensable requisites.But
It is that edible oil quality problem constantly threatens the health of people in recent years, even waste oil is returned the report of dining table and seen repeatly not
It is fresh：There are some bad retailers that reusable edible oil returned into dining table again by simple process, and the food of Reusability
With oil significant threat is constituted for health.
Differentiate method primary chemical detection method, large-scale instrument method, fluorescence method, the Rapid Screening method of poor oil at present.Chemistry
The method of detection is usually to need to be extracted with organic reagent, separate etc. just be tested after pre-treatment step, preceding place
Reason process operation is complicated and can use to poisonous organic reagent；The existing method by detecting acid value and peroxide value is only
Can simply judge whether edible oil is expired, and edible oil quality cannot be identified, coverage rate is narrow.And some reported on the market
Precision instrument is for example then needed to purchase very expensive large-scale instrument using methods such as nuclear magnetic resonance, mass spectrums, and instrument is deposited
Put environment and very harsh to the requirement of the professional technique of operating personnel, it is impossible to realize live real-time detection；Wherein, using fluorescence
Detection technique needs also exist for using chemical extraction pre-treatment the method that differentiates poor oil, and instrument used is also costly such as
The sepectrophotofluorometer of Shimadzu Corporation, and some use the method for three-dimensional fluorescence to also need to substantial amounts of follow-up data treatment.
The method that the method for quick discriminating poor oil detects polar compound such as the electrical conductivity of German moral figure on the market at present, be at present with this
Immediate technical scheme is invented, but it can only judge the quality of frying oil, and detection temperature needs control at 40-200 DEG C
Between, also periodically instrument is corrected in addition, program is cumbersome.And, with the quick screening method of electrical conductivity principle
One index of polar compound can be detected, so being only capable of detecting the poor oil that polar compound is exceeded, is surpassed for adulterated, peroxide value
Mark, the poor oil for spending the shelf-life etc., even waste oil, this kind of rapid screening method cannot be detected.
It is therefore desirable to developing a kind of relatively simple easy-to-use method and its equipment, system is used to detect the quality of edible oil.
It is desirable that desirable to provide a kind of quick, simple, easily edible oil scene real-time detection method, it can be used to supervise law enforcement, meal
Shop and oil enterprise check oneself, or even the regular self-inspection of family's oil product.And, it is desirable that the method can be used for detecting that the overwhelming majority is common
Vegetable oil, such as peanut oil, olive oil, various ready-mixed oils, rapeseed oil, sunflower oil, corn oil, soybean oil, linseed oil, mountain
Tea oil and Rice oil, etc..
The content of the invention
It is an object of the present invention to provide a kind of edible oil quality detection method, the method includes：Detection is described edible
The risks and assumptions y of oil1；Detect the health factor y of the edible oil2；Risks and assumptions y based on the edible oil for being detected1With
Health factor y2, determine the oil product scoring z of the edible oil；And according to the oil product of the identified edible oil score z, really
The quality of the fixed edible oil.
It is a further object to provide a kind of equipment for detecting edible oil quality, the equipment includes：Excitation source,
Light for sending from specific wavelength to the edible oil；Fluorescence signal acceptance division, for receiving the edible oil described specific
The fluorescence signal sent under the exciting of the light of wavelength；And signal processing part, at the fluorescence signal to the reception
Reason, to obtain the data signal of the intensity for characterizing the fluorescence signal.
A further object of the present invention is to provide a kind of system for detecting edible oil quality, and the system includes：Foregoing sets
It is standby, as detection induction end；And the data control terminal communicated with the detection induction end by communication；
Wherein, the data control terminal is received from the detection induction end by communication and characterizes edible oil in specific wavelength
The intensity that excites the fluorescence signal produced under light irradiation data signal, and the edible oil is determined according to foregoing method
Quality.
Brief description of the drawings
Fig. 1 is the flow chart of the method for the detection edible oil quality according to an embodiment of the invention.
Fig. 2 is the schematic diagram of the fluorescence detector according to an embodiment of the invention.
Fig. 3 is the schematic diagram according to the treatment of the fluorescence signal of an embodiment of the invention.
Fig. 4 shows a kind of excitation source mould of the fluorescence detector that can be used for an implementation method of the invention
Block.
Fig. 5 shows a kind of opto-electronic conversion, the I/V of the fluorescence detector that can be used for an implementation method of the invention
Modular converter.
Fig. 6 shows a kind of voltage follower of the fluorescence detector that can be used for an implementation method of the invention.
Fig. 7 shows a kind of amplifier module of the fluorescence detector that can be used for an implementation method of the invention.
Fig. 8 shows a kind of bandpass filter of the fluorescence detector that can be used for an implementation method of the invention.
Specific embodiment
To make those skilled in the art more fully understand technical scheme, below in conjunction with the accompanying drawings and specific embodiment party
The invention will be further described for formula.
In the present invention, the principle of fluorescence can be produced under the exciting of the exciting light of specific wavelength according to edible oil, with spy
Standing wave light long excites edible oil, and gathers the fluorescence signal that the edible oil sends in the case where the light of above-mentioned specific wavelength is excited.It
Afterwards, the data signal for characterizing above-mentioned fluorescence signal intensity is obtained.For example, by a series of conversions, by fluorogram curve, (it is horizontal
Axle is wavelength, and the longitudinal axis is fluorescence signal intensity) in aforementioned fluorescent signal peak area (i.e. its longitudinal axis value more than baseline part institute
The area of covering) corresponding data signal is converted to, the data signal is the data signal of the intensity for characterizing the fluorescence signal.
Additionally, those skilled in the art can also be changed the longitudinal axis value (fluorescence of fluorogram curve highest peak position by a series of
Top intensity level) corresponding data signal is converted to, the data signal also can be used as the number of the intensity for characterizing the fluorescence signal
Word signal.
In the present invention, after above-mentioned data signal is obtained, using characterizing these data signals and indicate edible oil quality
Quantized value between linear relationship predetermined formula, try to achieve the quantized value of the instruction edible oil quality, and according to the quantized value
Judge which kind of grade is the quality of edible oil be in.
Fig. 1 shows the flow chart of the method for the detection edible oil quality of an implementation method of the invention.Such as Fig. 1
Shown, the method includes, in step ST1, (risks and assumptions are used for comprehensive test edible oil to the risks and assumptions of detection edible oil
Aldehyde, ketone, peroxide, acrylamide, BaP because processing, preserving improper or produced during high temperature frying etc. has
Risk of the evil material to health)；Then, in step ST2, (health factor is used for the health factor of detection edible oil
The level of the nutritional ingredients such as the leukotrienes, linoleic acid, oleic acid, vitamin E, the flavonoids that are included in comprehensive evaluating edible oil)；It
Afterwards, in step ST3, risks and assumptions and health factor based on the edible oil for being detected determine the oil product scoring of edible oil；Most
Afterwards, in step ST4, the oil product scoring according to identified edible oil determines the quality of edible oil.The method of the present invention need not
It is limited to above-mentioned execution sequence.In fact, those skilled in the art will appreciate that in the method according to the invention, step ST2
Can be performed prior to step ST1, it is also possible to step ST1 executed in parallel.
Wherein, detect that the risks and assumptions of edible oil include, the edible oil is calculated using following predetermined formula
Risks and assumptions：
y1=3.786x1+5.211x2+5.269x3-54.676(R2=0.947)
Wherein：x1Now sent by the sign edible oil obtained when exciting light irradiation edible oil with 400nm wavelength
Fluorescence signal intensity data signal, x2It is to be eaten with the sign obtained when exciting light irradiation edible oil of 480nm wavelength
The data signal of the intensity of the fluorescence signal now sent with oil, x3It is with 560nm wavelength when exciting light irradiation edible oil
The data signal of the intensity of the fluorescence signal that the sign edible oil for being obtained now is sent, R is coefficient correlation.More specifically,
Coefficient R represents and is actually used in the risks and assumptions numerical value of fitting (numerical value for being actually used in the risks and assumptions of fitting here is real
The content total amount of border polar compound, acid value, peroxide value etc., is by other laboratory facilities such as titration, dry type test paper, colorimetric
What method etc. drew) correlation with the risks and assumptions calculated by formula, it is not a part for formula.It is also just
Say, R2For assessing through the good and bad degree of the formula obtained by over-fitting, R2Closer to 1, linear fit must be better.
In order to determine above-mentioned edible oil risks and assumptions computing formula, the exciting light of 400nm, 480nm and 560nm can be used
Source excitation contains aldehyde, ketone, peroxide, acrylamide, the edible oil of BaP of various concentrations, as it was previously stated, available
400nm, 480nm and 560nm excite the fluorescence signal obtained under light irradiation, and obtain corresponding according to these fluorescence signals
Data signal.By measure different brands, variety classes (such as ready-mixed oil, corn oil etc.) aldehyde containing various concentrations,
Ketone, peroxide, acrylamide, the edible oil of BaP, a large amount of 400nm, 480nm and 560nm for obtaining are excited under light irradiation
The data signal for being obtained, by mathematical modeling (such as linear fit, for example, can be by a large amount of different (y1, x1, x2, x3)
Point input excel or other statistical softwares, you can call the correlation function therein to carry out linear fit) above-mentioned public affairs can be obtained
Formula.
On the other hand, detect that the health factor of edible oil includes, this is calculated using following predetermined formula and is eaten
The health factor of oil：
y2=8.421x1+7.757x4+0.578x2+0.688x3-95.759(R2=0.947)
Wherein：x1Now sent by the sign edible oil obtained when exciting light irradiation edible oil with 400nm wavelength
Fluorescence signal intensity data signal, x2It is to be eaten with the sign obtained when exciting light irradiation edible oil of 480nm wavelength
The data signal of the intensity of the fluorescence signal now sent with oil, x3It is with 560nm wavelength when exciting light irradiation edible oil
The data signal of the intensity of the fluorescence signal that the sign edible oil for being obtained now is sent, x4It is exciting with 440nm wavelength
The data signal of the intensity of the fluorescence signal that the sign edible oil obtained during light irradiation edible oil is now sent, R is correlation
Coefficient, its implication is similar with the implication of the coefficient correlation of above-mentioned risks and assumptions formula, i.e. its expression is actually used in the health of fitting
(numerical value for being actually used in the health factor of fitting here is actual leukotrienes, oleic acid, vitamins, flavonoids to factor value
Equal size total amount, by other laboratory facilities as colorimetric method, gas chromatography etc. draw) calculated with by formula
The correlation of health factor.
In order to determine above-mentioned edible oil health factor computing formula, 400nm, 440nm, 480nm and 560nm can be used
Excitation source excites the leukotrienes containing various concentrations, linoleic acid, oleic acid, vitamin E, flavonoids edible oil, obtain 400nm,
440nm, 480nm and 560nm excite the fluorescence signal obtained under light irradiation, and obtain corresponding according to these fluorescence signals
Data signal.By measuring different brands, the flax of variety classes (such as ready-mixed oil, corn oil etc.) containing various concentrations
Acid, linoleic acid, oleic acid, vitamin E, the edible oil of flavonoids, a large amount of 400nm, 440nm, 480nm and 560nm for obtaining are excited
The data signal obtained under light irradiation, by mathematical modeling (such as linear fit, for example, can be by a large amount of different (y2, x1,
x2, x3, x4) point input excel or other statistical softwares, you can call the correlation function therein to carry out linear fit) can obtain
To above-mentioned formula.
After the risks and assumptions and health factor of detection edible oil, in this embodiment, can be according to following public affairs
Formula come calculate oil product scoring：
Oil product scoring=9.81 × health factor -5.32 × risks and assumptions
The oil product score calculation formula can by the following method be determined：Detect substantial amounts of different brands, different types of
Oil and its frying oil, obtain the numerical value of substantial amounts of health factor, risks and assumptions；Different oil products is sorted out, such as peroxide
The exceeded oil product of some Testing index such as change value is exceeded, Acid value over national standard is divided into a class, and all indexs are normal all in national standard
In the range of oil product be divided into a class；If z (oil product scoring)=a × y2 (health factor)-b × y1 (risks and assumptions), using mathematics
Modeling method, looks for out suitable a, b value so that Testing index it is exceeded this class oil oil product scoring z numerical value 60 with
Under, and cause the numerical value of the oily oil product scoring z that all indexs all comply with the national standard requirements more than 60.Finally draw, oil
=9.81 × health factor -5.32 × risks and assumptions are judged point, the formula can evaluate in the market overwhelming majority edible oils.
Finally, can be evaluated according to the oil product scoring being calculated according to above formula, the quality to edible oil.Tool
Body ground, in this embodiment, can evaluate the quality of edible oil according to following standard：
1. the oil product scoring such as edible oil falls among interval [85,100], it is believed that the oil quality is " high-quality "；
2. as the oil product scoring of edible oil fall it is interval [65,85) among, it is believed that the oil quality is " qualified "；
3. as the oil product scoring of edible oil fall it is interval [55,65) among, it is believed that the oil quality is "abnormal"；
4. as the oil product scoring of edible oil fall it is interval [0,55) among, it is believed that the oil quality is " poor quality ".
The detection of fluorescence signal
More than detection edible oil quality method in, using it is predetermined sign fluorescence intensity data signal with
Linear relationship between edible oil risks and assumptions, health factor tries to achieve the risks and assumptions and health factor of edible oil.Then,
The oil product scoring of edible oil is determined using the risks and assumptions and health factor.And described data signal is obtained, need first
Detect the fluorescence signal that edible oil sends under the exciting of the exciting light of specific wavelength.
Fig. 2 shows the schematic diagram of the fluorescence detector of an implementation method of the invention.As shown in Figure 2, should
Fluorescence detector mainly includes USB interface lid 1, upper casing 2, main circuit board 3, battery 4, support 1, support 26, sealing ring 7, spy
First 8, photocell support 9, photocell 10, convex lens 11, plano lens 12, lamp plate 13, lower cover 14, M2*6 tapping screws 15, M2.3*
6 tapping screws 16, touch switch 17, light-guiding pillar 1, light-guiding pillar 2 19.
USB interface lid 1 plays water proof and dust proof for the used time not to cover interface in USB interface, while being also used for keeping
Outward appearance it is consistent attractive in appearance.Upper casing 2 is used to aid in fixing main circuit board 3.Computing communicating circuit is provided with main circuit board 3, is passed through
M2.3*6 tapping screws 16 and be fixed on support 1.Battery 4 is powered to fluorescence detector, and it is bonded by 3M adhesive
On main circuit board 3.The support main circuit board 3 of support 1 and battery 4, and play the role of positioning.Support 26 is plated item, plays decoration
Effect, its upper end is connected by ultrasonic welding technique with upper casing 2, and support 1 is by 3 tapping screws 15 of M2*6 and branch
Frame 26 is fixed.These three parts complete the fixation and sealing of upper cavity.Probe 8 is connected by screw thread with the lower end of support 26
Connect.Sealing ring 7 seals.Photocell support 9 is used for fixing lamp plate 13, photocell 10 and convex lens 11.Lamp plate 13 is provided
Light source needed for detection.Convex lens 11 collect detection light.Photocell 10 converts optical signals to electric signal.Plano lens 12 passes through glue
Water is bonded on probe 8, separates detected material and instrument internal component.Lower cover 14 can plug, it pulls up and exposes when test
Probe 8, then to cover holding not attractive in appearance and protect probe 8 used time.Touch switch 17 plays switching on and shutting down.Light-guiding pillar 1 is by annular
Indicator lamp directs into the corresponding annular loophole of upper casing 2 exactly, and plays fixed touch switch 17；Light-guiding pillar 2 19 will
Spot light is converted into area source, and is directed to the bar shaped loophole of upper casing 2.
In practice, the fluorescence detector is used to be sent to edible oil as follows light and the detection of specific wavelength
The fluorescence signal that the edible oil sends under the light irradiation of specific wavelength：
Microprocessor (such as STM32) produces an alternating current drive signal for CF, is driven by LED drive circuit
LED produces exciting light.After this excites the specific edible oil of light irradiation, the fluorescence planoconvex lens that the latter sends collects detection light
Line, photocell converts optical signals to current signal.
The acquisition of data signal
After above-mentioned fluorescence signal is detected these are characterized, it is necessary to be obtained from these fluorescence signals by a series for the treatment of
The data signal of fluorescence signal intensity.
Fig. 3 is the schematic diagram according to the treatment of the fluorescence signal of the specific embodiment of the present invention.Passing through as previously described
After photoelectric sensor such as photocell obtain current signal, the current signal is converted into voltage signal by I/V converters.The simulation
After voltage signal is exaggerated device amplification, by the bandpass filter of CF, the noise of removal Hz noise and other frequencies.
Afterwards, the AC signal is converted into direct current signal by AC/DC converter, then by after A/D converter sampling, converting
It is data signal, so as to reach the purpose that shielding natural light receives the interference of fluorescence signal to detector.As shown in figure 3, the number
Word signal is transported to above-mentioned microprocessor.
A specific embodiment of the invention, above-mentioned photoelectric sensor, I/V converters, amplifier, bandpass filtering
Device, AC/DC converter, A/D converter, microprocessor, LED drive circuit, LED are arranged at foregoing fluoroscopic examination
On device, more specifically, in addition to LED, these parts are arranged on the main circuit board 3 of foregoing fluorescence detector.Namely
Say, in this embodiment, fluorescence detector completes to characterize the fluorescence to the collection and output of the fluorescence signal of edible oil
The data signal of the intensity of signal.
Below, instantiation will be combined to illustrate some main circuit blocks of composition fluorescence detector.
Fig. 4 shows and can be used for a kind of excitation source module of fluorescence detector of the invention.As shown in Figure 4, this swashs
Lighting source module is by constant-current LED driving chip, adjustable resistance R1 and the light emitting diode D1 of the light for for example sending required wavelength
Composition；Pulse-width signal is loaded on the enable pin (EN) of the driving chip, it is possible to achieve simple brilliance control (light modulation
Function), that is, changing the dutycycle of the pulse-width signal can adjust the size of output current.The driving current of each LED is most
It is high up to 100mA, its currents match precision up to 0.3%, compared with traditional voltage by series resistance drives LED methods,
Its brightness is more stablized, in hgher efficiency.The features such as light source has low-power consumption, efficient, stability is high.Although the implementation in Fig. 4
Mode is the light that required wavelength is sent by LED, it is however not limited to this kind of implementation method, can also be using the light of other forms
Source, such as deuterium lamp and xenon lamp etc. send the light of required wavelength.
Fig. 5 shows and can be used for a kind of opto-electronic conversion, the I/V modular converters of fluorescence detector of the invention.Such as institute in Fig. 5
Show, the module is made up of low biasing high input impedance, the accurate amplifier U3 of high-gain, photodiode D2, resistance R2, R3, R4；
After the opto-electronic conversion that photodiode D2 completes fluorescence signal, the current signal of gained is by I/V modular converters (electric current/electricity
Pressure converter) corresponding voltage signal is converted to, this circuit has different multiplication factors to AC and DC signal, specifically
Ground, its direct current multiplication factor VDC=Iind×(R2+R4)；And its exchange multiplication factor VAC=Iina× R2 (1+R4/R3), wherein
IindRepresent direct current input current, IinaRepresent AC input current.
Fig. 6 shows and can be used for a kind of voltage follower of fluorescence detector of the invention.The voltage follower is by having
Extremely low input offset voltage, extremely low offset voltage, the high precision operating amplifier composition of the very low input of temperature drift.It has
The characteristics of input impedance is high and output impedance is low, can play buffering, isolation, (it is commonly used for centre to improve load capacity
Level, to isolate the influence between front stage).
Fig. 7 shows and can be used for a kind of amplifier module of fluorescence detector of the invention.The amplifier module is by having
In high precision, the operational amplifier composition of low noise, low bias voltage.In addition to enlarging function, the amplifier module also has single order
High-pass filtering and first-order low-pass wave energy so that useful signal is exaggerated, and invalid signals are suppressed.AC modulation can have
Effect ground improves instrument to the adaptability of ambient light, thus instrument can under natural light interference condition normal work so that its
Job stability and antijamming capability amplitude are improved.The same phase multiplication factor Vout/Vin=1+ of the amplifier module
R7/R6。
Fig. 8 shows and can be used for a kind of bandpass filter of fluorescence detector of the invention.As shown in figure 8, the band logical is filtered
Ripple device is made up of low noise, precision operational-amplifier U5 and resistance R11, R12, R13, R14, R15, electric capacity C15, C16.By changing
Become the component parameters of wave filter, the bandpass filter centre frequency can be set, so as to realize transmitting the letter in particular frequency range
Number, and the function of signal beyond this frequency range is blocked, to reach the purpose of selectivity transmission.After after filtering, signal
Low frequency and radio-frequency component be all filtered out, remaining signal is a sine wave signal for smoother.
Edible oil quality detecting system of the invention
A specific embodiment of the invention, edible oil quality detecting system is controlled by detection induction end and data
Terminal is constituted.Now, above-mentioned fluorescence detector is used as the detection induction end, and mobile phone or panel computer are controlled as the data
Terminal, and corresponding edible oil quality detection app is installed on the data control terminal.As it was previously stated, the detection of the system
Induction end gather edible oil specific wavelength excite light irradiation under the fluorescence signal that produces, obtain and characterize these fluorescence signals
The data signal of intensity, and these data signals are sent to the edible oil quality inspection on data control terminal in the way of bluetooth
Survey app.Edible oil quality detection app is based between predetermined data signal and edible oil risks and assumptions and health factor
Linear relationship, try to achieve the corresponding edible oil risks and assumptions of data signal of the intensity for characterizing the fluorescence signal and health because
Son.Finally, oil product scoring is calculated according to risks and assumptions and health factor, for determining that edible oil quality falls four below etc.
Which grade in level：Inferior, abnormal, qualified, high-quality.All testing results are presented on the app.
Furthermore, it is possible to pass through the app and realize control to detecting induction end and follow-up data storage, transmit and chase after
Track.For example, client can enter app for example, by bluetooth communication with the detection induction end of all fluorescence detectors described above
Row connection.App after successful connection is equivalent to a central control board, and user can click on detection, data on app and look into
The function button such as ask to control the operation of above-mentioned fluorescence detector.By means of the app, user can also complete the number beyond detection
According to the extra function such as storage, data transfer, data-printing, data edition.For example, user can be by testing result in wechat
Share in circle of friends, wechat good friend, QQ good friends.Additionally, the app can also possess historical data search-read function, consult newest
The function such as food security news and relevant food safe knowledge.
Detect the general flow of edible oil quality
An implementation method of the invention, can detect edible oil quality according to following steps：The first step, will examine
Survey among the probe insertion edible oil sample of induction end (such as fluorescence detector)；Second step, installs on data control terminal
The species (such as edible oil, peanut oil, olive oil, sesame oil) of sample is selected on the interface of edible oil quality detection app；3rd
Step, detection is started on the interface of the edible oil quality detection app installed on the data control terminal, then detect induction end from edible
Oil samples obtain relevant data signal, and the data signal is sent into the edible oil installed on data control terminal with bluetooth approach
Quality Detection app, the latter determines oil quality, and the oil quality that will eventually determine by foregoing series of computation
Result is presented on its interface in intuitively form.
The invention has the characteristics that：
1st, processed without any chemical reagent
2nd, detection time is only 20s
3rd, equipment instrument is small, and quality is only 84g, it is easy to carried.
4th, intelligent, it is detection induction end, the food installed on smart mobile phone, panel computer that this product uses fluorescence detector
It is information processing end and testing result output end with oil product quality detection app, it is easy to operate.
It is understood that the embodiment of above principle being intended to be merely illustrative of the present and the exemplary implementation for using
Mode, but the invention is not limited in this.For those skilled in the art, essence of the invention is not being departed from
In the case of god and essence, various changes and modifications can be made therein, and these variations and modifications are also considered as being comprised in of the invention
In protection domain.
Claims (12)
1. a kind of edible oil quality detection method, it is characterised in that the edible oil quality detection method includes：
Detect the risks and assumptions y of the edible oil1；
Detect the health factor y of the edible oil2；
Risks and assumptions y based on the edible oil for being detected1With health factor y2, determine the oil product scoring z of the edible oil；
And
Oil product scoring z according to the identified edible oil, determines the quality of the edible oil.
2. method according to claim 1, it is characterised in that the risks and assumptions y of the edible oil1It is and the edible oil
In the harmful substance such as aldehyde, ketone, peroxide, acrylamide, BaP the corresponding quantized value of contents level.
3. method according to claim 1, it is characterised in that the health factor y of the edible oil2It is and the edible oil
In the benefit materials such as leukotrienes, linoleic acid, oleic acid, vitamin E, flavones ingredient the corresponding quantized value of contents level.
4. method according to claim 1, it is characterised in that the risks and assumptions of the detection edible oil include：
Obtain the data signal of the intensity for exciting the fluorescence signal sent under light irradiation for characterizing the edible oil in 400nm wavelength
x1；
Obtain the data signal of the intensity for exciting the fluorescence signal sent under light irradiation for characterizing the edible oil in 480nm wavelength
x2；
Obtain the data signal of the intensity for exciting the fluorescence signal sent under light irradiation for characterizing the edible oil in 560nm wavelength
x3；And
According to y1=3.786x1+5.211x2+5.269x3-54.676(R2=0.947), determine the risks and assumptions of the edible oil
y1, wherein R is coefficient correlation.
5. method according to claim 4, it is characterised in that the health factor of the detection edible oil includes：
Obtain the data signal of the intensity for exciting the fluorescence signal sent under light irradiation for characterizing the edible oil in 400nm wavelength
x1；
Obtain the data signal of the intensity for exciting the fluorescence signal sent under light irradiation for characterizing the edible oil in 440nm wavelength
x4；
Obtain the data signal of the intensity for exciting the fluorescence signal sent under light irradiation for characterizing the edible oil in 480nm wavelength
x2；
Obtain the data signal of the intensity for exciting the fluorescence signal sent under light irradiation for characterizing the edible oil in 560nm wavelength
x3；And
According to y2=8.421x1+7.757x4+0.578x2+0.688x3-95.759(R2=0.947), determine the edible oil
Health factor y2, wherein R is coefficient correlation.
6. method according to claim 5, it is characterised in that determining the oil product scoring z of the edible oil includes：
According to z=9.81 × y2-5.32×y1, determine the oil product scoring z of the edible oil.
7. method according to claim 6, it is characterised in that the oil product scoring z according to the edible oil, determines the food
Included with the quality of oil：
A. the oil product scoring z of edible oil falls among interval [85,100] as described, it is believed that the oil quality is " high-quality "；
B. as described the oil product scoring z of edible oil fall it is interval [65,85) among, it is believed that the oil quality is " qualified "；
C. as described the oil product scoring z of edible oil fall it is interval [55,65) among, it is believed that the oil quality is "abnormal"；Or
D. as described the oil product scoring z of edible oil fall it is interval [0,55) among, it is believed that the oil quality is " poor quality ".
8. method according to claim 6, it is characterised in that the edible oil is included by peanut oil, olive oil, various tune
One kind in the group constituted with oil, rapeseed oil, sunflower oil, corn oil, soybean oil, linseed oil, camellia oil and Rice oil
Or it is various.
9. it is a kind of detect edible oil quality equipment, it is characterised in that the equipment includes：
Excitation source, the light for sending specific wavelength to the edible oil；
Fluorescence signal acceptance division, for receiving the fluorescence letter that the edible oil sends under the exciting of the light of the specific wavelength
Number；And
Signal processing part, is processed for the fluorescence signal to the reception, and the intensity of the fluorescence signal is characterized to obtain
Data signal.
10. equipment as claimed in claim 6, it is characterised in that the signal processing part includes：
Photoelectric conversion part, for the fluorescence signal of the reception to be converted into corresponding ac signal；
AC-DC conversion portion, for the ac signal to be converted into corresponding DC signal；And
Analog to Digital Converter section, for the DC signal to be converted into corresponding data signal, the corresponding data signal is
To characterize the data signal of the intensity of the fluorescence signal.
11. a kind of systems for detecting edible oil quality, it is characterised in that the system includes：
Equipment according to claim 9, as detection induction end；And
The data control terminal communicated with the detection induction end by communication；
Wherein, the data control terminal is received from the detection induction end by communication and characterizes edible oil specific
The data signal of the intensity for exciting the fluorescence signal produced under light irradiation of wavelength, and according to any one of claim 1 to 8 institute
The method stated determines the quality of the edible oil.
12. systems as claimed in claim 11, it is characterised in that the data control terminal includes smart mobile phone or flat board electricity
Brain.
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| CN108872176A (en) * | 2018-08-01 | 2018-11-23 | 滁州学院 | A kind of edible vegetable oil quality detecting method based on metalloporphyrin probe |
| CN109060741A (en) * | 2018-08-01 | 2018-12-21 | 滁州学院 | A kind of edible vegetable oil storage period oil product detection device and method |
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| CN106908426A (en) | 2017-06-30 |
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