CN102539796B - Automatic analysis meter and method for amylose - Google Patents
Automatic analysis meter and method for amylose Download PDFInfo
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- CN102539796B CN102539796B CN 201010615186 CN201010615186A CN102539796B CN 102539796 B CN102539796 B CN 102539796B CN 201010615186 CN201010615186 CN 201010615186 CN 201010615186 A CN201010615186 A CN 201010615186A CN 102539796 B CN102539796 B CN 102539796B
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Abstract
The invention discloses an automatic analysis meter for amylose in food. The automatic analysis meter is characterized in that: an automatic sample introduction device (1), an online processing assembly and a flow cell (22) in a detector (23) are sequentially connected by capillary connection pipes; and the detector (23) is connected with a computer processing system (25) through a signal wire (24). The automatic analysis meter has the advantages that: a sample can be continuously and automatically tested according to a principle of combining flow injection and spectrophotometry, and test speed is high; and high test sensitivity, accuracy and repeatability are achieved.
Description
Technical field
The present invention relates to a kind of full-automatic flow injection analyzer, relate in particular to the using method of automatic analyzer and the automatic analyzer of amylose in a kind of food.
Background technology
The analysis of amylose in the food utilizes starch to form the iodine-starch compound with iodine, and has special color principle among the national standard method GB5006-85.Wherein amylopectin and iodine generate the brownish red compound, and amylose and iodine generate the mazarine compound.Under starch total amount permanence condition, these two kinds of starch dispersion liquids are pressed different proportion to be mixed, under certain wavelength and acidity condition with the iodine effect, generation by purplish red to dark blue a series of colors, represent its different amyloses and amylopectin content ratio, linear according to absorbance and amylose concentration, available spectrophotometric determination.The mensuration of amylose mainly relies on manual operations at present, its complex steps, and personal error is larger, and precision is poor, and test speed is slow
Summary of the invention
For overcoming above-mentioned deficiency, the invention provides a kind of automatic analyzer and assay method thereof of measuring amylose in the food.
Simple, convenient with it for Flow Injection Analysis, easily realize robotization and the characteristics that can carry out online pre-treatment to sample being widely used at present (Ruzicka J, Hansen E H in the chemical analysis, Flow Injection Analysis, Wiley, NewYork, 1981; Fang Zhaolun, flow injection analysis, Beijing: Science Press, 1999).
Summary of the invention
For addressing the above problem, the purpose of this invention is to provide and a kind ofly continuously and automatically sample is tested, test the fully-automatic analyzer of amylose in the food quickly and accurately.
The automatic analyzer of amylose in a kind of food, wherein, the flow cell in automatic sampling apparatus, online processing components, the detecting device connects with the capillary connecting pipe successively, and detecting device is connected with computer processing system by signal wire; Automatic sampling apparatus comprises sample introduction needle, sample disc, sample introduction needle service sink, pipeline-cleaning pond; Online processing components comprises two peristaltic pumps, the multiport valve that has six valve ports at least, two knitting reactor, sampling ring, two threeways, waste liquid tank, two back pressure regulators, pump line and capillary connecting pipe, the first peristaltic pump is provided with the first pump line, the sample introduction needle of automatic sampling apparatus is connected with the F port of multiport valve by the first pump line, the A port of multiport valve is connected with waste liquid tank through the first back pressure regulator, the second peristaltic pump is provided with the second pump line, the 3rd pump line, the 4th pump line, the two ends of sampling ring are connected to B port and the E port of multiport valve, the D port of multiport valve is connected by the second pump line with the current-carrying solution bottle, the C port of multiport valve successively with the first threeway the first entrance, the first threeway outlet, the first knitting reactor, the second threeway the first entrance, the second threeway outlet, the second knitting reactor, flow cell links to each other by the capillary connecting pipe; The first threeway the second entrance, the 3rd pump line link to each other by the capillary connecting pipe with the acetic acid solution bottle, the second threeway the second entrance, the 4th pump line link to each other by the capillary connecting pipe with the Wagner's reagent bottle, and flow cell, the second back pressure regulator are connected by the capillary connecting pipe with waste liquid tank.
The automatic analyzer of amylose in the food of the present invention, wherein the first peristaltic pump, the second peristaltic pump bore are 0.38～1.85mm, pump speed is 15～60 rev/mins.
The automatic analyzer of amylose in the food of the present invention, wherein the first knitting reactor capillary pipe length is 0.5～1.5m; The second knitting reactor capillary pipe length is 2～5m; The capillary pipe length of sampling ring 16 is 1～4m.
The automatic analyzer of amylose in the food of the present invention, wherein the internal diameter of capillary connecting pipe is 0.5～1.0mm.
The automatic analyzer of amylose in the food of the present invention, wherein multiport valve is the multiport valve with 6～24 ports.
Use the method for the automatic analyzer of amylose in the food of the present invention, wherein, may further comprise the steps:
(1) after filtering sample from sample hose under the effect of automatic sampling apparatus at peristaltic pump by the first pump line, enter the sampling ring that connects on the multiport valve, after sample was full of sampling ring, unnecessary sample entered waste liquid bottle through the direct waste discharge of the first back pressure regulator;
(2) multiport valve turns to the state shown in the dotted line among the figure, multiport valve D port and E port, F port and A port, the B port links to each other with the C port, peristaltic pump pumps into multiport valve with current-carrying solution, sample in the sampling ring is released to enter in the first threeway and is converged with acetic acid buffer solution, in the first knitting reactor, mix afterwards, mixed solution converges with Wagner's reagent in the second threeway, in the second knitting reactor, react afterwards, the reacted solution pond that circulates is carried out colorimetric estimation by detecting device at 600～700nm place, and the liquid that flows out directly enters waste liquid bottle through the second back pressure regulator;
(3) absorbance peak height value or the peak area value of computer processing system record sample, computer processing system absorbance peak height value or peak area value per sample calculates the content of amylose in the sample at typical curve.
The present invention uses the method for the automatic analyzer of amylose in the food, and wherein, the light path of flow cell is 10～50mm.
The method of the automatic analyzer of amylose in the bright use food of this law, wherein current-carrying is NaOH, its concentration is 1～10g/L; In the acetic acid solution, the concentration of acetic acid is 1.8～7.2% (v/v); The concentration of iodine is that the concentration of 1～10g/L, potassium iodide is 10～100g/L in the Wagner's reagent.
The automatic analyzer of amylose in use in the food of the present invention, standard solution and sample are poured into respectively in the sample hose of automatic sampling apparatus, get final product automatic analysis, absorbance peak height or peak area according to the standard solution that records are done typical curve, absorbance peak height value per sample or peak area value can calculate the content of amylose in the sample on typical curve, therefore the present invention can test sample continuously and automatically, and test accurately fast.
Advantage of the present invention:
The automatic analyzer of amylose in a kind of food is provided, and the principle that adopts flow injection to be combined with spectrophotometric method can be tested sample continuously and automatically, and test speed is fast; That tests is highly sensitive, and accuracy is good, and precision is high, good reproducibility.
Description of drawings
Fig. 1 is the structural representation of the automatic analyzer of amylose in the food of the present invention.
Embodiment
Embodiment 1
Be described further below in conjunction with the automatic analyzer of Figure of description to amylose of the present invention.
Referring to Fig. 1, the automatic analyzer of amylose in a kind of food, the flow cell 22 in automatic sampling apparatus 1, online processing components, the detecting device 23 connects with the capillary connecting pipe successively, and detecting device 23 is connected with computer processing system 25 by signal wire 24; Described automatic sampling apparatus comprises sample introduction needle 5, sample disc 4, sample introduction needle service sink 2, pipeline-cleaning pond 3; Described online processing components comprises two peristaltic pumps, the multiport valve 17 that has six valve ports at least, two knitting reactor, sampling ring, two threeways, waste liquid tank, two back pressure regulators, pump line and capillary connecting pipe, the first peristaltic pump 10 is provided with the first pump line 12, the sample introduction needle 5 of described automatic sampling apparatus is connected with the F port of multiport valve 17 by the first pump line, the A port of multiport valve 17 is connected connection through the first back pressure regulator 26 with waste liquid tank, the second peristaltic pump 11 is provided with the second pump line 13, the 3rd pump line 14, the 4th pump line 15, the two ends of sampling ring 16 are connected to B port and the E port of described multiport valve 17, the D port of described multiport valve 17 is connected by described the second pump line 13 with current-carrying solution bottle 7, the C port of described multiport valve 17 successively with the first threeway 18 first entrances, the first threeway 18 outlets, the first knitting reactor 9, the second threeway 20 first entrances, the second threeway 20 outlets, the second knitting reactor 21, flow cell 22 links to each other by the capillary connecting pipe; Described the first threeway 18 second entrances, the 3rd pump line 14 link to each other by the capillary connecting pipe with acetic acid solution bottle 8, described the second threeway 20 second entrances, the 4th pump line 15 link to each other by the capillary connecting pipe with Wagner's reagent bottle 9, and described flow cell 22, the second back pressure regulator 27 are connected by the capillary connecting pipe with waste liquid tank 28.
The first peristaltic pump 10, the second peristaltic pump 11 pump line internal diameters are 0.38～1.85mm, and pump speed is 15～60 rev/mins.The first knitting reactor 19 capillary pipe lengths are 0.5～1.5m; The second knitting reactor 20 capillary pipe lengths are 2～5m.Internal diameter capillaceous is 0.5～1.0mm, and multiport valve is the multiport valve with 6～24 ports, and the light path of flow cell is 10～50mm, and the detection wavelength of detecting device is 600～700nm.
Current-carrying 7 is NaOH, and its concentration is 1-10g/L; Acetic acid solution: use the concentration (v/v) of 36% acetic acid to be made into the acetic acid solution that ultimate density is 1.8～7.2% (v/v); The concentration of iodine is that the concentration of 1～10g/L, potassium iodide is 10-100g/L in the Wagner's reagent 9.
Referring to Fig. 1, the course of work of the automatic analyzer of amylose is as follows in the food of the present invention: may further comprise the steps:
(1) after filtering sample from sample hose 6 through automatic sampling apparatus 1 under the effect of peristaltic pump 10 by the first pump line 12, enter the sampling ring 16 that connects on the multiport valve 17, after sample was full of sampling ring 16, unnecessary sample entered waste liquid bottle 28 through the 26 direct waste discharges of the first back pressure regulator;
(2) multiport valve 17 turns to the state shown in the dotted line among the figure, multiport valve 17D port and E port, F port and A port, the B port links to each other with the C port, peristaltic pump 11 pumps into multiport valve 17 with current-carrying solution, sample in the sampling ring 16 is released to enter in the first threeway 18 and is converged with acetic acid buffer solution 8, in the first knitting reactor 19, mix afterwards, mixed solution converges with Wagner's reagent 9 in the second threeway 20, afterwards reaction in the second knitting reactor 21, the reacted solution pond 22 that circulates is carried out colorimetric estimation by detecting device 23 at 600～700nm place, and the liquid that flows out directly enters waste liquid bottle 28 through the second back pressure regulator 27;
(3) absorbance peak height value or the peak area value of computer processing system 25 record samples, computer processing system 25 absorbance peak height value or peak area value per sample calculates the content of amylose in the sample at typical curve.
Embodiment 2
Such as embodiment 1, in the situation that other condition is constant, change the internal diameter of capillary connecting pipe, measuring amylose concentration is the titer of 10% (m/m), 20% (m/m), and the different absorbance that obtains.Amylose concentration is defined as: the ratio of the weight of amylose and whole starch weight, the compound method of titer is according to national standard (GB5006-85 " the thick amylometric method of cereal kernel ".
Absorbance data under the table 1 different inner diameters capillary connecting line
| The pipeline internal diameter | 0.4mm | 0.6mm | 0.8mm | 1.0 |
| 10％(m/m) | 11.90 | 15.90 | 10.36 | 8.82 |
| 20％(m/m) | 16.75 | 22.78 | 17.45 | 15.21 |
As known from Table 1, when choosing the 0.6mm caliber, automatic analyzer sensitivity and the determination efficiency of amylose is the highest in the food of the present invention.
Embodiment 3
Such as embodiment 1, in the situation that other condition is constant, change the length of reaction pipeline, measure amylose concentration and be 10% (m/m), 20% titer, and the different absorbance that obtains.
Absorbance data under the different woollen yarn knitting reaction of table 2 length of pipe
| The first knitting reactor | 50cm | 50cm | 50cm | 100cm | 100cm |
| The second knitting reactor | 200cm | 400cm | 500cm | 200cm | 400cm |
| 25％(m/m) | 26.50 | 27.81 | 27.39 | 24.77 | 23.01 |
As known from Table 2, choose the knitting reactor length under the second set condition, automatic analyzer sensitivity and the determination efficiency of amylose is best in the food of the present invention.
Embodiment 4
Such as embodiment 1, in the situation that other condition is constant, under the different light paths, mensuration amylose concentration is 10%, 20% titer, and the different absorbance that obtains the results are shown in Table 3.
Absorbance data under the table 3 detecting device different wave length
| Wavelength | 540nm | | 620nm | 580nm | |
| 10％(m/m) | 1.17 | 4.68 | 15.46 | 6.86 | |
| 20％(m/m) | 5.54 | 12.10 | 22.96 | 14.01 | |
| 30％(m/m) | 6.79 | 18.04 | 29.98 | 19.95 |
As known from Table 3, absorbance was maximum when detecting device was chosen 620nm, and the automatic analyzer of amylose is highly sensitive in the food of the present invention.
Conclusion: embodiment 2,3,4 can prove, the instrument that this patent is related to by the condition that provides in this patent reaches best detection effect in sample determination.
Embodiment 5
Such as the automatic analyzer of amylose in the food of embodiment 1, the first peristaltic pump (10), upper the first pump line internal diameter of the second peristaltic pump (11) are 1.85mm; The second pump line is 1.52mm, and the 3rd pump line is 0.76mm, and the 4th pump line is 0.76mm, and pump speed is 35 rev/mins, and the first knitting reactor 19 capillary pipe lengths are 0.5m; The second knitting reactor 21 capillary pipe lengths are 4.0m; The capillary pipe length of sampling ring (16) is 2m; The internal diameter of capillary connecting pipe is 0.6mm; Multiport valve is the multiport valve with 6 ports; Carry out colorimetric estimation by detecting device 23 at the 620nm place, the light path of flow cell is 30mm.Current-carrying is NaOH, and its concentration is 5g/L; The concentration of acetic acid is 4.0% (v/v) in the acetic acid solution; The concentration of iodine is that the concentration of 5g/L, potassium iodide is 50g/L in the described Wagner's reagent.From the Flour production process, randomly draw 6 samples, use respectively the automatic analyzer of amylose in the food of the present embodiment automatically to detect and carry out manual inspection according to national standard (GB5006-85 " the thick amylometric method of cereal kernel "), the results are shown in Table 4.
The comparative analysis result (n=6) of table 4 this method and Manual analysis method
Conclusion: adopt this instrumental method measurement result and manual method indifference.
Above embodiment is described preferred implementation of the present invention; be not that scope of the present invention is limited; design under the prerequisite of spirit not breaking away from the present invention; various distortion and improvement that the common engineering technical personnel in this area make technical scheme of the present invention all should fall in the definite protection domain of claims of the present invention.
Claims (8)
1. the automatic analyzer of amylose in the food, it is characterized in that, flow cell (22) in automatic sampling apparatus (1), online processing components, the detecting device (23) connects with the capillary connecting pipe successively, and detecting device (23) is connected with computer processing system (25) by signal wire (24); Described automatic sampling apparatus comprises sample introduction needle (5), sample disc (4), sample introduction needle service sink (2), pipeline-cleaning pond (3); Described online processing components comprises two peristaltic pumps, the multiport valve (17) that has six valve ports at least, two knitting reactor, sampling ring, two threeways, waste liquid tank, two back pressure regulators, pump line and capillary connecting pipe, the first peristaltic pump (10) is provided with the first pump line (12), the sample introduction needle of described automatic sampling apparatus (5) is connected with the F port of multiport valve (17) by the first pump line, the A port of multiport valve (17) is connected 28 through the first back pressure regulator (26) with waste liquid tank) connect, the second peristaltic pump (11) is provided with the second pump line (13), the 3rd pump line (14), the 4th pump line (15), the two ends of sampling ring (16) are connected to B port and the E port of described multiport valve (17), the D port of described multiport valve (17) is connected by described the second pump line (13) with current-carrying solution bottle (7), the C port of described multiport valve (17) successively with the first threeway (18) first entrances, the first threeway (18) outlet, the first knitting reactor (19), the second threeway (20) first entrances, the second threeway (20) outlet, the second knitting reactor (21), flow cell (22) links to each other by the capillary connecting pipe; Described the first threeway (18) second entrances, the 3rd pump line (14) link to each other by the capillary connecting pipe with acetic acid solution bottle (8), described the second threeway (20) second entrances, the 4th pump line (15) link to each other by the capillary connecting pipe with Wagner's reagent bottle (9), and described flow cell (22), the second back pressure regulator (27) are connected by the capillary connecting pipe with waste liquid tank (28).
2. the automatic analyzer of amylose in the food according to claim 1 is characterized in that, the first peristaltic pump (10), the second peristaltic pump (11) pump line internal diameter are 0.38～1.85mm, and pump speed is 15～60 rev/mins.
3. the automatic analyzer of amylose in the food according to claim 2 is characterized in that, the first knitting reactor (19) capillary pipe length is 0.5～1.5m; The second knitting reactor (21) capillary pipe length is 2～5m; The capillary pipe length of sampling ring (16) is 1～4m.
4. the automatic analyzer of amylose in the food according to claim 3 is characterized in that, the internal diameter of capillary connecting pipe is 0.5～1.0mm.
5. the automatic analyzer of amylose in the food according to claim 4 is characterized in that, multiport valve is the multiport valve with 6～24 ports.
6. use as claimed in claim in 1～4 the method for the automatic analyzer of amylose in any one the food, it is characterized in that, may further comprise the steps:
(1) after filtering sample from sample hose (6) through automatic sampling apparatus (1) under the effect of the first peristaltic pump (10) by the first pump line (12), enter the upper sampling ring (16) that connects of multiport valve (17), after sample was full of sampling ring (16), unnecessary sample entered waste liquid tank (28) through the direct waste discharge of the first back pressure regulator (26);
(2) multiport valve (17) turns to the state shown in the dotted line among the figure, multiport valve (17) D port and E port, F port and A port, the B port links to each other with the C port, the second peristaltic pump (11) pumps into multiport valve (17) with current-carrying solution, sample in the sampling ring (16) release enter in the first threeway (18) with acetic acid solution bottle (8) in acetic acid buffer solution converge, in the first knitting reactor (19), mix afterwards, mixed solution in the second threeway (20) with Wagner's reagent bottle (9) in Wagner's reagent converge, afterwards reaction in the second knitting reactor (21), the reacted solution pond (22) that circulates, carry out colorimetric estimation by detecting device (23) at 600～700nm place, the liquid that flows out directly enters waste liquid tank (28) through the second back pressure regulator (27);
(3) absorbance peak height value or the peak area value of computer processing system (25) record sample, computer processing system (25) absorbance peak height value or peak area value per sample calculates the content of amylose in the sample at typical curve.
7. the method for the automatic analyzer of amylose in the described use food according to claim 6 is characterized in that, the light path of flow cell is 10～50mm.
8. the method for the automatic analyzer of amylose in the described use food according to claim 7 is characterized in that, current-carrying is NaOH, and its concentration is 1～10g/L; The concentration of acetic acid is 1.8～7.2%(v/v) in the acetic acid solution; The concentration of iodine is that the concentration of 1～10g/L, potassium iodide is 10～100g/L in the described Wagner's reagent.
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| CN 201010615186 CN102539796B (en) | 2010-12-30 | 2010-12-30 | Automatic analysis meter and method for amylose |
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| CN 201010615186 CN102539796B (en) | 2010-12-30 | 2010-12-30 | Automatic analysis meter and method for amylose |
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| CN102539796B true CN102539796B (en) | 2013-10-16 |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| FI20165270A (en) * | 2016-03-31 | 2017-10-01 | Kemira Oyj | Method and system for determining starch in a sample |
| CN108535498A (en) * | 2018-03-09 | 2018-09-14 | 北京宝德仪器有限公司 | Aluminium automatic analysing apparatus and analysis method in water |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0022654A1 (en) * | 1979-07-13 | 1981-01-21 | Fiatron Systems Inc. | Liquid handling device |
| US5573651A (en) * | 1995-04-17 | 1996-11-12 | The Dow Chemical Company | Apparatus and method for flow injection analysis |
| CN2634481Y (en) * | 2003-05-08 | 2004-08-18 | 山东省科学院中日友好生物技术研究中心 | On-line automatic detector for reduced sugar |
| CN101074924A (en) * | 2007-05-16 | 2007-11-21 | 洪陵成 | Method for fastly analyzing chemical oxygen demand by high-pressure flowing injection |
| CN101320001A (en) * | 2008-07-01 | 2008-12-10 | 洪陵成 | High pressure flow injection rapid analysis system for permanganate index of water quality |
-
2010
- 2010-12-30 CN CN 201010615186 patent/CN102539796B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0022654A1 (en) * | 1979-07-13 | 1981-01-21 | Fiatron Systems Inc. | Liquid handling device |
| US5573651A (en) * | 1995-04-17 | 1996-11-12 | The Dow Chemical Company | Apparatus and method for flow injection analysis |
| CN2634481Y (en) * | 2003-05-08 | 2004-08-18 | 山东省科学院中日友好生物技术研究中心 | On-line automatic detector for reduced sugar |
| CN101074924A (en) * | 2007-05-16 | 2007-11-21 | 洪陵成 | Method for fastly analyzing chemical oxygen demand by high-pressure flowing injection |
| CN101320001A (en) * | 2008-07-01 | 2008-12-10 | 洪陵成 | High pressure flow injection rapid analysis system for permanganate index of water quality |
Non-Patent Citations (1)
| Title |
|---|
| 张巧杰，王一鸣，吴静珠，徐云.基于比色原理的直链淀粉测定仪稳定性分析.《农业机械学报》.2006,第37卷(第2期),160-163. * |
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