CN103558286A - Salted egg white salt detection method based on mutual voltage principle - Google Patents
Salted egg white salt detection method based on mutual voltage principle Download PDFInfo
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Abstract
The invention relates to a salted egg white salt detection method based on a mutual voltage principle. The method adopts a device comprising a signal generator, a coil winding, an annular silicon steel iron core, a glass communicating vessel, a pair of platinum electrodes, a digital alternating-current millivoltmeter and a glass spring. The detection method comprises the following steps: injecting salted egg white to be detected in the glass communicating vessel, placing the platinum electrodes in the salted egg white to be detected, starting the signal generator to send out a sinusoidal alternating-current signal with the frequency of 600-614 kHz and the excitation voltage effective value of 5-7 V, exciting the coil winding to generate an alternating flux, generating an induced ion voltage U in the salted egg white to be detected in the glass spring, detecting through the platinum electrodes by the digital alternating-current millivoltmeter, and calculating the salt content of the salted egg white to be detected through a formula. The method disclosed by the invention can be used for quickly detecting the salt content of the salted egg white without any chemical reagent and is simple and convenient in operation, high in precision and high in repeatability.
Description
Technical field
The present invention relates to the detection method of salted egg albumen salinity, be specifically related to a kind of salted egg albumen salinity method for quick based on induction ion voltage, belong to food physico-chemical examination technique field, belong to Food Science and electromagnetics cross-application field.
Background technology
Salted egg is one of Chinese traditional food, because of the soft loose sand of its quality, edible tasty, nutritious and liked by consumer.Wherein salted egg is except directly eating, preserved egg yellow also adds in the products such as moon cake, pyramid-shaped dumpling as raw-food material, and salted egg albumen also can be used as other food auxiliary materials, applied, as added in dumpling wrapper, steamed bun skin making, food and drink condiments or bakery product, improved mouthfeel and the quality of product.Salted egg albumen is the important component part of salted egg, containing human body institute must eight kinds of essential amino acids, multivitamin and the mineral matters such as iron, phosphorus, VA, VB1, VB2 can be provided, be the food source of a class high-quality, cheapness; Moreover, salted egg albumen is similar to freshly-slaughtered poultry egg white, has several functions character, as gelling, emulsibility, retentiveness etc., therefore salted egg albumen consumption increases year by year.
At present, the common method that detects salted egg's egg white salinity is silver nitrate chemical titration, and its operation is comparatively loaded down with trivial details, and reagent consumption is large, and cost is high, is unfavorable for fast detecting.
Summary of the invention
The above-mentioned defect existing for existing salted egg albumen salinity detection method, the object of the present invention is to provide a kind of salted egg albumen salinity detection method based on mutual voltage principle.The inventive method can fast detecting go out salted egg albumen salt content, and without using any chemical reagent, easy and simple to handle, degree of accuracy is high, repeatable strong.
Technical scheme of the present invention is as follows:
A salted egg albumen salinity detection method for mutual voltage principle, the method adopts device to comprise signal generator, coil winding, annular silicon steel iron core, glass linker, a pair of platinum electrode, Digital AC Millivoltmeter and glass spring; Described signal generator is communicated with coil winding, and described coil winding is around in described annular silicon steel iron core one end, and described glass linker bottom is communicated with by one section of glass spring, and this glass spring forms winding open circuit and is around in the described annular silicon steel iron core other end; Described Digital AC Millivoltmeter detects induction ion voltage by described platinum electrode;
This detection method is as follows: salted egg albumen to be checked is injected in described glass linker, and be full of described glass spring to form open-circuit condition, described platinum electrode is put into this salted egg albumen to be checked, start signal generator makes it to send frequency 600～614kHz, the sinusoidal ac signal of driving voltage effective value 5～7V, encourage described coil winding to produce alternating flux, because containing a large amount of strong electrolyte negative ions in salted egg albumen, to produce in induction ion voltage U(and salted egg albumen salt content linear), and detected by described platinum electrode by described Digital AC Millivoltmeter,
This salted egg albumen salt content to be checked is calculated by following formula: salinity (%)=(0.00095U-0.18) * 100, and described formula unit is mV, salinity sensing range is 0～18%.
Its further technical scheme is:
The described coil winding number of turn is 250 circles.
The thickness of described annular silicon steel iron core is 2.5cm, and the length of magnetic path is 60～75cm.
Described glass spring cross-sectional area 8cm
2, umber of turn is 20 circles, its internal diameter 5mm, external diameter 7mm, length 15cm.
The useful technique effect of invention is as follows:
The invention provides a kind of based on mutual voltage principle fast, the device and method of efficient detection salted egg albumen salt content, first by signal generator, send the sinusoidal signal of certain frequency and driving voltage, encourage the coil winding of annular silicon steel core one end to produce alternating flux, and then make to be full of in glass spring in the salted egg albumen of a large amount of strong electrolyte negative ions and produce induction ion voltage, by Digital AC Millivoltmeter, by a pair of platinum electrode, can be measured, this magnitude of voltage and salt content are linear, therefore can convert this voltage tester value to salt content in salted egg albumen.
The present invention compares with traditional silver nitrate chemical titration, and without adopting any chemical reagent, easy and simple to handle, minute is short, convenient and swift, and degree of accuracy is high, repeatable strong, easy to utilize.
Accompanying drawing explanation
Fig. 1 is the pick-up unit schematic diagram that the present invention is based on the salted egg albumen salinity detection method of mutual voltage principle, wherein: 1. signal generator, 2. coil winding, 3. annular silicon steel iron core, 4. glass linker, 5. platinum electrode, 6. Digital AC Millivoltmeter, 7. glass spring, 8. salted egg albumen to be checked, 9. magnetic circuit.
Embodiment
Carry out by the following examples further to explain the present invention, the following example is for illustration purpose but not for limiting the scope of the invention.
As shown in Figure 1, salted egg albumen salinity detection method of the present invention is based on carrying out with lower device, and this device is comprised of signal generator 1, coil winding 2, annular silicon steel iron core 3, glass linker 4, platinum electrode 5, Digital AC Millivoltmeter 6 and glass spring 7; Signal generator 1 is communicated with coil winding 2, coil winding 2 is around in annular silicon steel iron core 3 one end, glass linker bottom is communicated with by one section of glass spring 7, this glass spring 7 forms winding open circuit and is around in annular silicon steel iron core 3 other ends, and Digital AC Millivoltmeter 6 detects induction ion voltage by a pair of platinum electrode 5; Coil winding 2 numbers of turn are 250 circles; Annular silicon steel iron core 3 thickness are 2.5cm, and its length of magnetic path 9 is 70cm; Glass spring 7 cross-sectional areas are 8cm
2, umber of turn is 20 circles, its internal diameter 5mm, external diameter 7mm, length 15cm.
Get commercially available three parts of salted egg albumen samples (salted egg albumen sample 1～salted egg albumen sample 3), adopt respectively said apparatus to detect salinity.
Get salted egg albumen sample 1 250ml altogether, by its slow implantation glass linker 4, and be full of glass spring 7 to form open-circuit condition, then a pair of platinum electrode 5 is put into salted egg albumen 8 to be checked; Start signal generator 1 makes it to send frequency 614kHz, driving voltage is that the sine of 5V is handed over signal, drive coil winding 2 produces alternating flux, in annular silicon steel iron core 3, form magnetic circuit 9, in salted egg albumen to be checked 8 in glass spring 7, produce induction ion voltage U, and detected by platinum electrode 5 by Digital AC Millivoltmeter 6, recording magnitude of voltage (responding to ion voltage U) is 302.1mV, by following formula, calculate: salinity (%)=(0.00095U-0.18) * 100, the salt content that obtains salted egg albumen sample 1 is 10.7%.
Get salted egg albumen sample 2 250ml altogether, by its slow implantation glass linker 4, and be full of glass spring 7 to form open-circuit condition, then a pair of platinum electrode 5 is put into salted egg albumen 8 to be checked; Start signal generator 1 makes it to send frequency 605kHz, driving voltage is that the sine of 6V is handed over signal, drive coil winding 2 produces alternating flux, in annular silicon steel iron core 3, form magnetic circuit 9, in salted egg albumen to be checked 8 in glass spring 7, produce induction ion voltage U, and detected by platinum electrode 5 by Digital AC Millivoltmeter 6, recording magnitude of voltage (responding to ion voltage U) is 275.8mV, by formula, calculating the salt content that (with embodiment 1) calculate salted egg albumen sample 2 is 8.2%.
Embodiment 3
Get salted egg albumen sample 3 250ml altogether, by its slow implantation glass linker 4, and be full of glass spring 7 to form open-circuit condition, then a pair of platinum electrode 5 is put into salted egg albumen 8 to be checked; Start signal generator 1 makes it to send frequency 610kHz, driving voltage is that the sine of 7V is handed over signal, drive coil winding 2 produces alternating flux, in annular silicon steel iron core 3, form magnetic circuit 9, in salted egg albumen to be checked 8 in glass spring 7, produce induction ion voltage U, and detected by platinum electrode 5 by Digital AC Millivoltmeter 6, recording magnitude of voltage (responding to ion voltage U) is 269.5mV, by formula, calculating the salt content that (with embodiment 1) calculate salted egg albumen sample 2 is 7.6%.
Reference examples 1～reference examples 3
Get respectively in embodiment 1～embodiment 3 salted egg albumen sample 1～salted egg albumen sample 3 according to silver nitrate chemical titration, according to the mensuration > > of sodium chloride in GB GB/T12457-2008 < < food, carry out salt content detection, measurement result is: salted egg albumen sample 1 is 10.5 ± 0.3%, salted egg albumen sample 2 is 8.0 ± 0.2%, salted egg albumen sample 3 is 7.9 ± 0.3%, proves that assay method of the present invention has higher accuracy.
Related each raw material of following examples is commercial goods, and described each test method is this area conventional method if no special instructions, and related each experimental instrument and equipment is this area conventional equipment.
Claims (4)
1. the salted egg albumen salinity detection method based on mutual voltage principle, is characterized in that:
The method adopts device to comprise signal generator, coil winding, annular silicon steel iron core, glass linker, a pair of platinum electrode, Digital AC Millivoltmeter and glass spring; Described signal generator is communicated with coil winding, and described coil winding is around in described annular silicon steel iron core one end, and described glass linker bottom is communicated with by one section of glass spring, and this glass spring forms winding open circuit and is around in the described annular silicon steel iron core other end; Described Digital AC Millivoltmeter detects induction ion voltage by described platinum electrode;
This detection method is as follows: salted egg albumen to be checked is injected in described glass linker, and be full of described glass spring to form open-circuit condition, described platinum electrode is put into this salted egg albumen to be checked, start signal generator makes it to send frequency 600～614kHz, the sinusoidal ac signal of driving voltage effective value 5～7V, encourage described coil winding to produce alternating flux, in salted egg albumen to be checked in described glass spring, produce induction ion voltage U, and detected by described platinum electrode by described Digital AC Millivoltmeter; This salted egg albumen salt content to be checked is calculated by following formula: salinity (%)=(0.00095U-0.18) * 100, and described formula unit is mV, salinity sensing range is 0～18%.
2. the salted egg albumen salinity detection method based on mutual voltage principle according to claim 1, is characterized in that: the described coil winding number of turn is 250 circles.
3. the salted egg albumen salinity detection method based on mutual voltage principle according to claim 1, is characterized in that: the thickness of described annular silicon steel iron core is 2.5cm, and the length of magnetic path is 60～75cm.
4. the salted egg albumen salinity detection method based on mutual voltage principle according to claim 1, is characterized in that: described glass spring cross-sectional area 8cm
2, umber of turn is 20 circles, its internal diameter 5mm, external diameter 7mm, length 15cm.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103940857A (en) * | 2014-05-05 | 2014-07-23 | 江南大学 | Device and detection method for rapidly detecting oil yield of salted egg in nondestructive manner |
| CN111965244A (en) * | 2020-08-30 | 2020-11-20 | 广东利诚检测技术有限公司 | Method for detecting sodium metabisulfite in rice flour based on excitation equipotential equipment |
| CN111983011A (en) * | 2020-08-30 | 2020-11-24 | 广东利诚检测技术有限公司 | Method for detecting sodium cyclamate in steamed bread based on four-way equal-difference induced potentials with different phases |
| CN111983012A (en) * | 2020-08-30 | 2020-11-24 | 广东利诚检测技术有限公司 | Method for detecting potassium sorbate in steamed bread by using out-of-phase equal-difference three-way induced potential |
| CN111983010A (en) * | 2020-08-30 | 2020-11-24 | 广东利诚检测技术有限公司 | Method for detecting sunset yellow in bread based on out-of-phase equal-difference three-way induced potential |
| CN111982976A (en) * | 2020-08-30 | 2020-11-24 | 广东利诚检测技术有限公司 | Method for detecting alum content in sweet potato powder based on heterogeneous equal-difference induced potential |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103940857A (en) * | 2014-05-05 | 2014-07-23 | 江南大学 | Device and detection method for rapidly detecting oil yield of salted egg in nondestructive manner |
| CN111965244A (en) * | 2020-08-30 | 2020-11-20 | 广东利诚检测技术有限公司 | Method for detecting sodium metabisulfite in rice flour based on excitation equipotential equipment |
| CN111983011A (en) * | 2020-08-30 | 2020-11-24 | 广东利诚检测技术有限公司 | Method for detecting sodium cyclamate in steamed bread based on four-way equal-difference induced potentials with different phases |
| CN111983012A (en) * | 2020-08-30 | 2020-11-24 | 广东利诚检测技术有限公司 | Method for detecting potassium sorbate in steamed bread by using out-of-phase equal-difference three-way induced potential |
| CN111983010A (en) * | 2020-08-30 | 2020-11-24 | 广东利诚检测技术有限公司 | Method for detecting sunset yellow in bread based on out-of-phase equal-difference three-way induced potential |
| CN111982976A (en) * | 2020-08-30 | 2020-11-24 | 广东利诚检测技术有限公司 | Method for detecting alum content in sweet potato powder based on heterogeneous equal-difference induced potential |
| CN111965244B (en) * | 2020-08-30 | 2022-04-05 | 广东利诚检测技术有限公司 | Method for detecting sodium metabisulfite in rice flour based on excitation equipotential equipment |
| CN111982976B (en) * | 2020-08-30 | 2022-04-08 | 广东利诚检测技术有限公司 | Method for detecting alum content in sweet potato powder based on heterogeneous equal-difference induced potential |
| CN111983010B (en) * | 2020-08-30 | 2022-04-08 | 广东利诚检测技术有限公司 | Method for detecting sunset yellow in bread based on out-of-phase equal-difference three-way induced potential |
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