CN104792708A - Method used for detecting dextrin content of health food via mid-infrared spectrum technology - Google Patents
Method used for detecting dextrin content of health food via mid-infrared spectrum technology Download PDFInfo
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- CN104792708A CN104792708A CN201410027469.4A CN201410027469A CN104792708A CN 104792708 A CN104792708 A CN 104792708A CN 201410027469 A CN201410027469 A CN 201410027469A CN 104792708 A CN104792708 A CN 104792708A
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Abstract
The invention discloses a method used for detecting dextrin content of health food via mid-infrared spectrum technology. The method comprises following steps: (1) tabletting and scanning of potassium bromide blank tablets are carried out so as to obtain a standard bland spectrogram; (2) tabletting and scanning of a dextrin standard sample are carried out so as to obtain a dextrin standard sample spectrogram; (3) tabletting and scanning of dextrin standard samples with different concentration are carried out so as to obtain spectrograms of dextrin standard samples of different concentration; (4) tabletting and scanning of samples to be detected are carried out so as to obtain a spectrogram of the samples to be detected; and (5) the spectrogram of the samples to be detected and the spectrograms of the dextrin standard samples of different concentration are subjected to similarity comparison using Fourier infrared spectrometer compare software so as to determine dextrin mass content of the samples to be detected. No strict requirement on state of the samples to be detected is made; the method can be applied on samples in gaseous state, liquid state, and solid state; the method is simple and rapid; only simple processing, such as physical smashing and tabletting, of the samples is needed; the samples can be subjected to direct testing without tedious separation process; universal equipment is used; and measuring operation is simple.
Description
Technical field
The present invention relates to the method for dextrin content in a kind of middle infrared spectrum technology for detection health food.
Background technology
Due to the phenomenon of adding that management and control is loose, processing technology is extensive, measuring means is backwards etc. of auxiliary material in health food, auxiliary material interpolation in product can be caused to exceed standard be even all the situation of dextrin.Therefore the method for dextrin content in a kind of quick detection health food is needed badly.
The fundamental basis of mid-infrared light spectral technology is that middle infrared spectrum has fingerprint.Their microcosmic fingerprint becomes common recognition already.The molecular spectrum various groups reflected existing for intramolecule of pure compound have the vibration frequency spectrum of fingerprint characteristic.It becomes one of method of the qualification (not) of simplification compound or Western medicine.For this mixture system of health food, then peak position in its molecular spectrum, peak shape, peak intensity then represent the superposition at the spectrum peak of contained corresponding various group in system, the change of potpourri composition, by causing the change of the overall spectrogram of molecular spectrum, therefore just forms the macroscopic fingerprint of spectrogram.But, at present, still do not utilize the various technology of molecular spectrum and computer technology to combine and can measure the report that in health food, dextrin adds rapidly.
Summary of the invention
The object of this invention is to provide a kind of method that mid-infrared light spectral technology differentiates that in health food, dextrin adds.
Technical scheme of the present invention is summarized as follows:
In middle infrared spectrum technology for detection health food, the method for dextrin content, is characterized in that comprising the steps:
(1) compressing tablet of potassium bromide blank and scanning: precision takes dry potassium bromide fine powder 200mg; Be placed in agate mortar and be fully ground to obtain potassium bromide fine powder, by potassium bromide fine powder dislocation in the pressing mold of diameter 13mm, paving cloth is even, is forced into 0.8Gpa, and keep 1min, the potassium bromide blank made, visual examination homogeneous transparent, without obvious particle; Potassium bromide blank is put into Fourier infrared spectrograph scanning room scan, the blank spectrogram of the standard that obtains;
(2) compressing tablet of dextrin standard model and scanning: precision takes dextrin 3mg through pulverizing 80 mesh sieves and accurately takes dry potassium bromide fine powder 200mg, be placed in agate mortar and be fully ground to obtain fine powder, by fine powder dislocation in the pressing mold of diameter 13mm, paving cloth is even, be forced into 0.8Gpa, keep 1min, make dextrin standard model sheet, visual examination is even, without obvious particle; Dextrin standard model sheet is put into Fourier infrared spectrograph scanning room scan, obtain dextrin standard model spectrogram;
(3) compressing tablet of the dextrin standard model of different content and scanning: preparation dextrin mass content is respectively 0%, 10%, 20%, 30%, 40%, 50%, the dextrin of 60% and health food mix the sample 1, sample 2, sample 3, sample 4, sample 5, sample 6 and the sample 7 that obtain, the accurate sample 1 taken through pulverizing 80 mesh sieves respectively, sample 2, sample 3, sample 4, sample 5, sample 6 and each 3mg of sample 7, be placed in agate mortar, and in each agate mortar, add the potassium bromide fine powder 200mg of the drying that precision takes respectively, fully be ground to obtain sample fine powder 1, sample fine powder 2, sample fine powder 3, sample fine powder 4, sample fine powder 5, sample fine powder 6 and sample fine powder 7, by each sample fine powder difference dislocation in the pressing mold of diameter 13mm, paving cloth is even, be forced into 0.8Gpa, keep 1min, make sample strip 1, sample strip 2, sample strip 3, sample strip 4, sample strip 5, sample strip 6 and sample strip 7, visual examination is even, without obvious particle, the sample strip 1 pressed, sample strip 2, sample strip 3, sample strip 4, sample strip 5, sample strip 6 and sample strip 7 are put into Fourier infrared spectrograph scanning room and carries out Sample Scan, obtain the dextrin standard model spectrogram of different content,
(4) compressing tablet of testing sample and scanning: precision takes testing sample 3mg through pulverizing 80 mesh sieves and accurately takes dry potassium bromide fine powder 200mg, be placed in agate mortar and be fully ground to obtain fine powder, by fine powder dislocation in the pressing mold of diameter 13mm, paving cloth is even, be forced into 0.8Gpa, keep 1min, make testing sample sheet, visual examination is even, without obvious particle; Testing sample sheet is put into Fourier infrared spectrograph scanning room scan, obtain testing sample spectrogram;
(5) utilize Fourier infrared spectrograph Compare software to carry out similarity-rough set the dextrin standard model spectrogram of testing sample spectrogram and different content, utilize similarity to judge the mass content of dextrin in testing sample.
Advantage of the present invention:
1. the state of pair tested sample is without overcritical, gaseous state, liquid and solid-stately all can.Therefore can accomplish not lose property originally for the various form of health food and the measurement of preparation, non-destructive.
2. easy, quick, sample only being done to the simple process such as physical crushing compressing tablet, can directly test without the need to doing very loaded down with trivial details detachment process.
3. instrument is comparatively general, measures easy and simple to handle, is easy to apply.
Accompanying drawing explanation
Fig. 1 is the health food infrared spectrum of different auxiliary material consumption;
Fig. 2 is the partial enlarged drawing of Fig. 1;
Fig. 3 is the working curve of auxiliary material (dextrin) in sky lion nutritious rich-calcium electuary health food.
Fig. 4 is testing sample spectrogram.
Embodiment
The following examples can make those skilled in the art more fully understand the present invention, but do not limit the present invention in any way.Below in conjunction with specific embodiment, the invention will be further described.
Embodiment 1
In middle infrared spectrum technology for detection health food, the method for dextrin content, comprises the steps:
(1) compressing tablet of potassium bromide blank and scanning: precision takes dry potassium bromide fine powder 200mg; Be placed in agate mortar and be fully ground to obtain potassium bromide fine powder, by potassium bromide fine powder dislocation in the pressing mold of diameter 13mm, paving cloth is even, is forced into 0.8Gpa, and keep 1min, the potassium bromide blank made, visual examination homogeneous transparent, without obvious particle; Potassium bromide blank is put into Fourier infrared spectrograph scanning room scan, the blank spectrogram of the standard that obtains;
(2) compressing tablet of dextrin standard model and scanning: precision takes dextrin 3mg through pulverizing 80 mesh sieves and accurately takes dry potassium bromide fine powder 200mg, be placed in agate mortar and be fully ground to obtain fine powder, by fine powder dislocation in the pressing mold of diameter 13mm, paving cloth is even, be forced into 0.8Gpa, keep 1min, make dextrin standard model sheet, visual examination is even, without obvious particle; Dextrin standard model sheet is put into Fourier infrared spectrograph scanning room scan, obtain dextrin standard model spectrogram, see the h of Fig. 1;
(3) compressing tablet of the dextrin standard model of different content and scanning: preparation dextrin mass content is respectively 0%, 10%, 20%, 30%, 40%, 50%, the dextrin of 60% and health food mix the sample 1, sample 2, sample 3, sample 4, sample 5, sample 6 and the sample 7 that obtain, the accurate sample 1 taken through pulverizing 80 mesh sieves respectively, sample 2, sample 3, sample 4, sample 5, sample 6 and each 3mg of sample 7, be placed in agate mortar, and in each agate mortar, add the potassium bromide fine powder 200mg of the drying that precision takes respectively, fully be ground to obtain sample fine powder 1, sample fine powder 2, sample fine powder 3, sample fine powder 4, sample fine powder 5, sample fine powder 6 and sample fine powder 7, by each sample fine powder difference dislocation in the pressing mold of diameter 13mm, paving cloth is even, be forced into 0.8Gpa, keep 1min, make sample strip 1, sample strip 2, sample strip 3, sample strip 4, sample strip 5, sample strip 6 and sample strip 7, visual examination is even, without obvious particle, the sample strip 1 pressed, sample strip 2, sample strip 3, sample strip 4, sample strip 5, sample strip 6 and sample strip 7 are put into Fourier infrared spectrograph scanning room and carries out Sample Scan, obtain the dextrin standard model spectrogram of different content, see Fig. 1, wherein: sample strip 1, sample strip 2, sample strip 3, sample strip 4, sample strip 5, sample strip 6 and sample strip 7 spectrogram are followed successively by a, b, c, d, e, f and g,
(4) compressing tablet of testing sample and scanning: precision takes testing sample (sky lion nutritious rich-calcium electuary health food) 3mg through pulverizing 80 mesh sieves and accurately takes dry potassium bromide fine powder 200mg, be placed in agate mortar and be fully ground to obtain fine powder, by fine powder dislocation in the pressing mold of diameter 13mm, paving cloth is even, be forced into 0.8Gpa, keep 1min, make testing sample sheet, visual examination is even, without obvious particle; Testing sample sheet is put into Fourier infrared spectrograph scanning room scan, obtain testing sample spectrogram, see Fig. 4;
(5) the dextrin standard model spectrogram of testing sample spectrogram and different content is compared, see Fig. 2, as can be seen from Fig. 2, the characteristic peak of dextrin strengthens from top to bottom successively, a is the former spectrogram not adding dextrin, there is no the characteristic peak of dextrin, (in see figure g), the strong peak 1021cm of the master of spectrogram when dextrin content reaches 60%
-1with the characteristic peak 1016cm of dextrin
-1only poor 5cm
-1.Therefore the relative intensity at the strong peak of dextrin master is relied on to carry out quality Identification fast.
Utilize Fourier infrared spectrograph Compare software to carry out similarity-rough set, obtain related coefficient in table 1 and Fig. 3;
Table 1 certain health food related coefficient containing different proportion dextrin
Can find out from correlation coefficient value, along with the increase of the addition of dextrin, its correlation coefficient value just clearly must increase, and is have certain regularity.This experimental result illustrates, because the repeatability of mid-infrared light spectrogram and fingerprint are comparatively strong, therefore middle infrared spectrum has objectively reflected the otherness on the auxiliary material content that adds in health food.
Claims (1)
1. the method for dextrin content in middle infrared spectrum technology for detection health food, is characterized in that comprising the steps:
(1) compressing tablet of potassium bromide blank and scanning: precision takes dry potassium bromide fine powder 200mg; Be placed in agate mortar and be fully ground to obtain potassium bromide fine powder, by potassium bromide fine powder dislocation in the pressing mold of diameter 13mm, paving cloth is even, is forced into 0.8Gpa, and keep 1min, the potassium bromide blank made, visual examination homogeneous transparent, without obvious particle; Potassium bromide blank is put into Fourier infrared spectrograph scanning room scan, the blank spectrogram of the standard that obtains;
(2) compressing tablet of dextrin standard model and scanning: precision takes dextrin 3mg through pulverizing 80 mesh sieves and accurately takes dry potassium bromide fine powder 200mg, be placed in agate mortar and be fully ground to obtain fine powder, by fine powder dislocation in the pressing mold of diameter 13mm, paving cloth is even, be forced into 0.8Gpa, keep 1min, make dextrin standard model sheet, visual examination is even, without obvious particle; Dextrin standard model sheet is put into Fourier infrared spectrograph scanning room scan, obtain dextrin standard model spectrogram;
(3) compressing tablet of the dextrin standard model of different content and scanning: preparation dextrin mass content is respectively 0%, 10%, 20%, 30%, 40%, 50%, the dextrin of 60% and health food mix the sample 1, sample 2, sample 3, sample 4, sample 5, sample 6 and the sample 7 that obtain, the accurate sample 1 taken through pulverizing 80 mesh sieves respectively, sample 2, sample 3, sample 4, sample 5, sample 6 and each 3mg of sample 7, be placed in agate mortar, and in each agate mortar, add the potassium bromide fine powder 200mg of the drying that precision takes respectively, fully be ground to obtain sample fine powder 1, sample fine powder 2, sample fine powder 3, sample fine powder 4, sample fine powder 5, sample fine powder 6 and sample fine powder 7, by each sample fine powder difference dislocation in the pressing mold of diameter 13mm, paving cloth is even, be forced into 0.8Gpa, keep 1min, make sample strip 1, sample strip 2, sample strip 3, sample strip 4, sample strip 5, sample strip 6 and sample strip 7, visual examination is even, without obvious particle, the sample strip 1 pressed, sample strip 2, sample strip 3, sample strip 4, sample strip 5, sample strip 6 and sample strip 7 are put into Fourier infrared spectrograph scanning room and carries out Sample Scan, obtain the dextrin standard model spectrogram of different content,
(4) compressing tablet of testing sample and scanning: precision takes testing sample 3mg through pulverizing 80 mesh sieves and accurately takes dry potassium bromide fine powder 200mg, be placed in agate mortar and be fully ground to obtain fine powder, by fine powder dislocation in the pressing mold of diameter 13mm, paving cloth is even, be forced into 0.8Gpa, keep 1min, make testing sample sheet, visual examination is even, without obvious particle; Testing sample sheet is put into Fourier infrared spectrograph scanning room scan, obtain testing sample spectrogram;
(5) utilize Fourier infrared spectrograph Compare software to carry out similarity-rough set the dextrin standard model spectrogram of testing sample spectrogram and different content, utilize similarity to judge the mass content of dextrin in testing sample.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106596765A (en) * | 2016-12-13 | 2017-04-26 | 完美（中国）有限公司 | Method for detecting addition amount of maltodextrin in food materials |
| CN107091815A (en) * | 2017-05-05 | 2017-08-25 | 张方达 | A kind of method for identifying rosewood |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1447109A (en) * | 2003-04-26 | 2003-10-08 | 清华大学 | Multistage macroscopical fingerprint method for identifying non-separated extracted infrared spectrum of granule of formula of Chinese traditional medicine |
| CN103018199A (en) * | 2012-12-21 | 2013-04-03 | 天津优标技术检测服务有限公司 | Method for quickly detecting quality of extract of green tea |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1447109A (en) * | 2003-04-26 | 2003-10-08 | 清华大学 | Multistage macroscopical fingerprint method for identifying non-separated extracted infrared spectrum of granule of formula of Chinese traditional medicine |
| CN103018199A (en) * | 2012-12-21 | 2013-04-03 | 天津优标技术检测服务有限公司 | Method for quickly detecting quality of extract of green tea |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106596765A (en) * | 2016-12-13 | 2017-04-26 | 完美（中国）有限公司 | Method for detecting addition amount of maltodextrin in food materials |
| CN106596765B (en) * | 2016-12-13 | 2019-06-11 | 完美（中国）有限公司 | The detection method of maltodextrin additive amount in a kind of raw-food material |
| CN107091815A (en) * | 2017-05-05 | 2017-08-25 | 张方达 | A kind of method for identifying rosewood |
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