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CN107884480A - A kind of detection method of the peaceful preparation of colon - Google Patents

A kind of detection method of the peaceful preparation of colon Download PDF

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Publication number
CN107884480A
CN107884480A CN201610870711.3A CN201610870711A CN107884480A CN 107884480 A CN107884480 A CN 107884480A CN 201610870711 A CN201610870711 A CN 201610870711A CN 107884480 A CN107884480 A CN 107884480A
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Prior art keywords
preparation
colon
peaceful
reference substance
solution
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Inventor
邓芸
叶惠煊
谢安
谭真鲁鲁
谷陟欣
袁莉
刘淑妦
朱丽
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Jiuzhitang Co Ltd
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Jiuzhitang Co Ltd
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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N30/00Investigating or analysing materials by separation into components using adsorption, absorption or similar phenomena or using ion-exchange, e.g. chromatography or field flow fractionation
    • G01N30/02Column chromatography
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N30/00Investigating or analysing materials by separation into components using adsorption, absorption or similar phenomena or using ion-exchange, e.g. chromatography or field flow fractionation
    • G01N30/02Column chromatography
    • G01N30/04Preparation or injection of sample to be analysed
    • G01N30/06Preparation
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N30/00Investigating or analysing materials by separation into components using adsorption, absorption or similar phenomena or using ion-exchange, e.g. chromatography or field flow fractionation
    • G01N30/02Column chromatography
    • G01N30/04Preparation or injection of sample to be analysed
    • G01N2030/042Standards
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N30/00Investigating or analysing materials by separation into components using adsorption, absorption or similar phenomena or using ion-exchange, e.g. chromatography or field flow fractionation
    • G01N30/02Column chromatography
    • G01N30/04Preparation or injection of sample to be analysed
    • G01N30/06Preparation
    • G01N2030/062Preparation extracting sample from raw material

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  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Investigating Or Analysing Biological Materials (AREA)
  • Investigating Or Analysing Materials By The Use Of Chemical Reactions (AREA)

Abstract

The invention discloses a kind of detection method of the peaceful preparation of colon.Method includes:1) preparation of reference substance solution;2) preparation of need testing solution;3) HPLC is detected.The inventive method precision is high, favorable reproducibility, and the rate of recovery is high, and measurement result is accurate, improves colon peaceful quality controllability and stability, it is ensured that the security and validity of people's medication.

Description

A kind of detection method of the peaceful preparation of colon
Technical field
The invention belongs to drug measurement techniques field, the secondary metabolite of cattail pollen more particularly in the measure peaceful preparation of colon Content.
Background technology
The peaceful preparation of colon has the effect of promoting blood circulation and removing blood stasis, gut purge antidiarrheal, is treatment chronic colitis, colitis, exedens The characteristic enema of colitis, bacillary dysentery.Reach a conclusion after weighing a matter since city, its quality standard is being lifted always.The peaceful preparation of colon be by Cattail pollen and the taste medicine of false loosestrife two composition prescription preparation, at present enterprises standard be mainly to its cattail pollen, false loosestrife it is qualitative The quantitative discriminating of gallic acid in discriminating and false loosestrife;But in prescription, cattail pollen dosage is the several times of false loosestrife, as materials Most raw materials, its quantitative approach are always the emphasis problem of the peaceful preparation detection of colon.
The content of the invention
The object of the invention is directed to the missing for the appropriate method that the peaceful preparation of colon controls for the content of cattail pollen at present and developed Detection method.The method comprises the following steps:
(1) preparation of reference substance solution:
Isorhamnetin reference substance is weighed, is placed in volumetric flask, adds 25%~75% ethanol or methanol, ultrasonic dissolution and constant volume To scale, shake up, reference substance solution is made;
(2) preparation of need testing solution:
The preparation of the peaceful need testing solution of colon:The peaceful sample of colon is taken to be placed in volumetric flask, it is accurately weighed, add 25%~75% Ethanol or methanol, 30~90min of ultrasound, are cooled to room temperature, are settled to scale, filtering;Precision measures subsequent filtrate and is evaporated, and adds water-soluble Solution is transferred in 100ml triangular pyramidal bottles, adds 1ml hydrochloric acid;It is placed in water-bath and is heated to reflux 30~60min, is cooled to room temperature Afterwards n-butanol or chloroform or ethyl acetate extraction are closed so that water is full;Transfer is settled in volumetric flask after extract is evaporated, and is produced.
(3) HPLC is detected:
Isorhamnetin reference substance solution and the peaceful preparation need testing solution of colon obtained by aspiration step (1) and (2) respectively, point It Zhu Ru be measured in high performance liquid chromatograph;
Wherein, chromatographic condition is:Chromatographic column is C18Reverse-phase chromatographic column;UV-detector;Column temperature is 30~35 DEG C;Detect ripple A length of 350~370nm;Mobile phase A is acetonitrile, and Mobile phase B is 0.1~1% phosphoric acid solution, and flow velocity is 0.8~1.2ml/min; 30 minutes analysis times;Isocratic elution, mobile phase A:Volume ratio=45~55 of Mobile phase B:55~45.
The preparation of step (1) need testing solution is preferably that following methods are carried out:
Weigh Isorhamnetin reference substance 5mg to be placed in volumetric flask, add 25~75% ethanol or methanol, ultrasonic dissolution and constant volume To scale, shake up, reference substance solution is made.
The preparation of step (2) need testing solution is preferably that following methods are carried out:
The peaceful sample of colon about 1~5g is taken to be placed in 50ml volumetric flasks, it is accurately weighed, add 30~70% methanol or ethanol 45mL, 30~90min of ultrasound, is cooled to room temperature, is settled to 50ml, filtering;Precision measures 10~30ml of subsequent filtrate and is evaporated, and adds water 20ml solution transfers add 1ml hydrochloric acid into 100ml triangular pyramidal bottles;It is placed in water-bath and is heated to reflux 30~90min, cools down Extracting n-butyl alcohol is closed so that water is full 1~5 time, every time 10~30ml after to room temperature;Transfer is settled to 10ml appearances after extract is evaporated Measuring bottle, produce.
The C that the preferred column length of chromatographic column in the step (3) is 250mm18Reverse-phase chromatographic column.
Detection wavelength is preferably 370nm in the step (3).
Mobile phase B is preferably 1% phosphoric acid solution in the step (3).
Flow velocity is preferably 1ml/min in the step (3).
Ethanol or methanol concentration are preferably 50% in the step (1) and (2).
Mobile phase A in the step (3):The volume ratio of Mobile phase B is preferably 53:47.
Sonication treatment time is preferably 30 minutes in the step (2).
Return time is 60 minutes in the step (2).
In the step (2) extracting n-butyl alcohol is closed so that water is full.
Preferably to show the essence of the present invention, by the methodological study of the present invention, details are as follows:
1 instrument and reagent
Instrument:Waters e2695-2998 type high performance liquid chromatographs, AR220 assay balances, BS2202D balances, CP225D balances, KQ300DE types numerical control ultrasonic cleaner, Kromasil 100-5 C18 (250mm × 4.6mm, 5 μm), Inertsil ODS-2 C18(250mm×4.6mm,5μm)、Hypersil ODS2 C18(250mm×4.6mm,5μm)、DZKW Type electric-heated thermostatic water bath etc..
Reagent:Colon peaceful (5g/ branch, lot number 20150401,20150402,20150403, by the nine limited public affairs of sesame hall share Department provides);Isorhamnetin (110860-201109, National Institute for Food and Drugs Control).
Reagent:Methanol (AR/ chromatographically pures), ethanol (AR), glacial acetic acid (AR), phosphoric acid (AR), acetonitrile (chromatographically pure), water is super Pure water.
2 methods and result
Selection, mobile phase, extracting mode, Extraction solvent, the selection of extraction time, extractant of 2.1 Detection wavelengths.
Full wavelength scanner (see accompanying drawing 1) has been carried out to sample using SPD-M20A detectors, has selected 370nm to detect ripple It is long.
The elution effect of the flowing relative sample such as methanol-phosphoric acid solution, acetonitrile-phosphoric acid solution of different proportion has been investigated, Consider the results such as collection of illustrative plates separating degree, post effect, symmetrical factor, it is mobile phase finally to select the phosphoric acid of acetonitrile -1%.Again according to sample The testing result (see accompanying drawing 2 to Fig. 3) of product, Isorhamnetin chromatographic peak whole appearances within detection 30min are found, so that it is determined that Detection time is 30min.
The peaceful 3g of colon is weighed, respectively with ultrasound, backflow 30 minutes, is as a result shown, difference is little, but ultrasound is easy It is easy, so choosing ultrasound is used as extracting method.Secondly, methanol recovery rate is found using methanol, ethanol as Extraction solvent respectively It is higher, so use methanol;Simultaneously respectively with 30% methanol, 50% methanol, 70% methanol, methanol ultrasonic extraction, as a result show 50% methanol recovery rate highest, 50% methanol is also finally selected as optimum extraction solvent.Subsequent ultrasonic time is to recovery rate Influenceing, ultrasound 30,60,90 minutes, it is found that its recovery rate at 30 minutes is larger respectively, so it is super to select optimal ultrasonic time Sound 30 minutes.And then return time is investigated for acid-hydrolyzed influence, is flowed back 30,60,90 minutes respectively, is found it at 60 points The recovery rate of clock is higher, therefore it is 60 minutes to choose optimal return time.Influence of the extractant to extraction effect is finally investigated, The full conjunction n-butanol of chloroform, ethyl acetate, water is respectively adopted, as a result shows that the full conjunction n-butanol of water and chloroform recovery efficiency are higher, though The right chloroform n-butanol that closes fuller than water is higher, but based on the management that malicious reagent is easily made in enterprise, selection water is full to close butanol solution As optimal extractant.
By being investigated to Extraction solvent, method, volume, time, the extracting method is finally determined.
Each step of the Research on Methods of table 1 result containing survey and relative deviation data
Isorhamnetin symmetrical factor and appearance time under 2 each mobile phase of table
2.2 chromatographic condition:
By investigating detector, flow visualizing, Detection wavelength, chromatographic column, column temperature and flow velocity, by optimizing repeatedly, obtain It is to optimal chromatographic condition:UV-detector, the phosphoric acid of acetonitrile -1% (57:43) isocratic elution, Hypersil ODS2C-18 colors Post (4.6 × 250mm, 5 μm) is composed, column temperature is 35 DEG C, flow velocity 1ml/min, and sample size is 10 μ l, Detection wavelength 370nm, is examined Survey time 30min.
It is prepared by 2.3 test liquids:
By investigating the investigation of extraction time, Extraction solvent, extracting mode, determine that test liquid preparation method is:Take this product 3g, it is accurately weighed, put in 50ml volumetric flasks, add 50% methanol 45ml, be ultrasonically treated (250W, frequency 20KHz) 30 minutes, put It is cold, add methanol to shake up to scale, filter, precision measures subsequent filtrate 25ml, is evaporated, and residue adds water 20ml to dissolve, and adds hydrochloric acid 1ml, Backflow 60 minutes, lets cool, is transferred to separatory funnel, with water-saturated n-butanol shaking extraction 3 times, each 20ml, merges water saturation N-butanol extracting liquid, it is evaporated, residue is dissolved with methanol, is transferred in 10ml measuring bottles, adds methanol to shake up, produce for examination to scale Product solution.
2.4 specificities are investigated
The negative sample for lacking cattail pollen is prepared with method with the peaceful technique of colon, test sample, reference substance solution prepares and assay method Ibid, negative sample is noiseless.See accompanying drawing 10.
2.5 linear investigations
Isorhamnetin reference substance 11.81mg is taken, precision is weighed, and dissolving is settled in 100ml volumetric flasks, produces mother liquor.Take 59.05,47.24,23.62,11.81,4.724,2.362 μ g/ml reference substance solution is respectively prepared in mother liquor, accurate respectively to draw Each 10 μ l injections liquid chromatograph of Isorhamnetin reference substance solution of above-mentioned various concentrations, measure, using peak area as ordinate, enters Sample amount (μ g) is abscissa, draws standard curve.Its regression equation is:Y=0.0002x+3.4937, R2=0.9994.Thus Understand, Isorhamnetin content is linear in 23.62~590.5 μ g ranges.See accompanying drawing 11.
The linear relationship result of the test of table 3
2.6 test limits are investigated with quantitative limit
2.6.1 test limit dilutes 4 times, obtained using the linear middle μ g/ml of concentration 2.362 reference substance solution as mother liquor 0.5905 μ g/ml, sample introduction 3 μ l, s/n are about 3 or so, therefore calculate to detect and be limited to 1.7715ng, as a result see accompanying drawing 12.
2.6.2 quantitative limit dilutes 4 times, obtained using the linear middle μ g/ml of concentration 2.362 reference substance solution as mother liquor 0.5905 μ g/ml, sample introduction 7 μ l, s/n are about 10 or so.Therefore calculate to detect and be limited to 4.1335ng.METHOD FOR CONTINUOUS DETERMINATION 6 times, Qi Feng faces Product integrated value RSD is 2.57%, the results are shown in Table 4, accompanying drawing 13.
The quantitative limit result of table 4
2.7 precision, repeatability and stability experiment
Reference substance solution is taken to calculate Isorhamnetin peak area RSD% in repeating sample introduction continuous sample introduction in same 1d 6 times, investigate Instrument withinday precision.It the results are shown in Table 5.
It is 20150402 samples to take lot number, prepares 6 parts respectively, is measured, and calculates content and its RSD%, investigates method Reappearance.It the results are shown in Table 6.
Same need testing solution is measured 0,6,12,18,24h respectively, records peak area, calculates relative reservation Time and relative peak area RSD%, to investigate the stability of sample.As a result show, Isorhamnetin had stable in 24 hours Property.It the results are shown in Table 7.
The precision result of table 5
6 repeated data of table
The stability data of table 7
2.8 average recovery
Precision weighs 6 parts of the test sample (Isorhamnetin content is 93.50 μ g/g) of known content, accurate respectively to add necessarily The Isorhamnetin reference substance of amount, according to recovery test liquid is prepared under 2.3, determine in accordance with the law, calculate the rate of recovery, the results are shown in Table 8.
The method recovery test result (n=6) of table 8
As a result show, colon is rather good with Isorhamnetin weight calculation renaturation.
2.9 durabilities are investigated
Using the method drafted, using different chromatographic columns, using the chromatographic column of 3 models to three batches of samples (20150402,20150403,20150501) are measured, and the results are shown in Table 9,10.As a result show, this method good tolerance.
The chromatogram column type number of table 9
The Isorhamnetin serviceability test result of table 10
2.10 10 batches of sample assays:
Add up 20 assay data in 10 batches of samples.It the results are shown in Table 11.
11 10 batches of sample assay data accumulations of table
This product (C in terms of Isorhamnetin16H12O7), 69mg/g must not be less than.
Quality control composition of the cattail pollen in Chinese Pharmacopoeia is typhaneoside and Isorhamnetin-3-O-neohespeidoside, the two Belong to flavonoid glycoside composition;There is water decoction process in the peaceful technique of colon, have certain destruction to the constituents in heating process, with The method of pharmacopeia detects to it, and as a result the two most content of total content of display is relatively low or is free of, and sees accompanying drawing 6~9.In not shadow On the premise of ringing the peaceful preparation oeverall quality of colon, establishing a kind of suitable detection method makes detected composition more protrude very It is necessary.
Beneficial effects of the present invention:To its index composition, (cattail is new different from cattail pollen in pharmacopeia for the inventive method Glycosides and Isorhamnetin-3-O-neohespeidoside) carry out Content evaluation, and to the acid hydrolysis products of its index composition (Isorhamnetin- Acid hydrolysis products-Isorhamnetin of 3-O- neohesperidins) quantify so as to carry out it indirect content control.This method ensures The peaceful preparation of colon controls quality, filled up in the peaceful preparation of colon to Pu well in the case where original effectively technique is constant Xanthate material carries out the blank of quality control.The detection method of the peaceful middle cattail pollen of colon of the present invention, it both can be used for control colon peaceful Quality, other prescriptions for being possible to be destroyed to its index composition can be boiled containing cattail pollen and progress decocting for controlling again And the control of preparation.The easy to operate of the inventive method, the degree of accuracy is high, specificity is good, precision is higher, reappearance is good, has Beneficial to the steady quality and clinical efficacy for ensureing the peaceful preparation of colon.
Brief description of the drawings
Fig. 1 is Detection wavelength full wavelength scanner figure;
Fig. 2 is the HPLC chromatogram of the Isorhamnetin reference substance of embodiment 1;
Fig. 3 is the peaceful HPLC chromatogram of the colon of embodiment 1;
Fig. 4 is the HPLC chromatogram of the Isorhamnetin reference substance of comparative example 1;
Fig. 5 is the peaceful HPLC chromatogram of the colon of comparative example 1;
Fig. 6 is the typhaneoside reference substance HPLC chromatogram of comparative example 2;
Fig. 7 is the Isorhamnetin-3-O-neohespeidoside reference substance HPLC chromatogram of comparative example 2;
Fig. 8 is the peaceful HPLC chromatogram of the colon of comparative example 2;
Fig. 9 is that the colon of comparative example 2 rather contrasts HPLC chromatogram with reference substance.
Figure 10 is specificity HPLC chromatogram;
Figure 11 is Isorhamnetin reference substance canonical plotting;
Figure 12 is Isorhamnetin test limit;
Figure 13 is Isorhamnetin quantitative limit.
Embodiment
Embodiment 1
1st, the detection method of the peaceful preparation of a kind of colon, comprises the following steps:
(1) preparation of reference substance solution:
Isorhamnetin reference substance 5mg is weighed, is placed in volumetric flask, adds 50% methanol, ultrasonic dissolution is simultaneously settled to scale, shaken It is even, reference substance solution is made.
(2) preparation of need testing solution:
Colon peaceful sample 3g is taken, it is accurately weighed, put in 50ml volumetric flasks, add 50% methanol 45ml, be ultrasonically treated (250W, Frequency 20KHz) 30 minutes, let cool, add 50% methanol to shake up, filter, precision measures subsequent filtrate 25ml, is evaporated, residue to scale Add water 20ml to be transferred in 100ml triangular pyramidal bottles, add 1ml hydrochloric acid.It is placed in water-bath and is heated to reflux 60min, is cooled to room Extracting n-butyl alcohol 3 times, each 20ml is closed so that water is full after temperature, combining extraction liquid, is shifted after extract is evaporated and is settled to 10ml appearances Measuring bottle, produce.
(3) HPLC is detected:
Reference substance solution and the peaceful preparation need testing solution of colon obtained by aspiration step (1) and (2) respectively, is injected separately into height It is measured in effect liquid phase chromatogram instrument;Wherein, chromatographic condition is:
UV-detector, the phosphoric acid of acetonitrile -1% (57:43) isocratic elution, ODS2C-18 chromatographic columns (4.6 × 250mm, 5 μ M), column temperature is 35 DEG C, flow velocity 1ml/min, and sample size is 10 μ l, Detection wavelength 370nm, detection time 30min.
(4) sample size determines
3 batches of sample assay data.12 are the results are shown in Table, sees accompanying drawing 2,3.
12 3 batches of sample assay data accumulations of table
Comparative example 1
A kind of peaceful detection method of colon, is comprised the following steps:
(1) preparation of reference substance solution:
Isorhamnetin reference substance 5mg is weighed, is placed in volumetric flask, adds methanol ultrasonic dissolution and is settled to scale, shake up, is made Into reference substance solution.
(2) preparation of need testing solution:
Colon peaceful sample 3g is taken, it is accurately weighed, put in 50ml volumetric flasks, add methanol 45ml, be ultrasonically treated (250W, frequency 20KHz) 30 minutes, let cool, add methanol to shake up, filter, precision measures subsequent filtrate 25ml, is evaporated, and residue adds water 20ml to scale It is transferred in 100ml triangular pyramidal bottles, adds 1ml hydrochloric acid.It is placed in water-bath and is heated to reflux 30min, is cooled to after room temperature with chlorine Imitative extraction 3 times, each 20ml, combining extraction liquid, shifted after extract is evaporated and be settled to 10ml volumetric flasks, produced.
(3) HPLC is detected:
Reference substance solution and the peaceful preparation need testing solution of colon obtained by aspiration step (1) and (2) respectively, is injected separately into height It is measured in effect liquid phase chromatogram instrument;Wherein, chromatographic condition is:
UV-detector, methanol:0.4% phosphoric acid (52:48) isocratic elution, ODS2C-18 chromatographic columns (4.6 × 250mm, 5 μ M), column temperature is 35 DEG C, flow velocity 1ml/min, and sample size is 10 μ l, Detection wavelength 370nm, detection time 30min.
Under such an approach, Isorhamnetin is not kept completely separate with other impurity peaks in test sample, can not obtain accurate content As a result, accompanying drawing 4,5 is as a result seen.
Comparative example 2
Colon is rather detected with Chinese Pharmacopoeia cattail pollen content assaying method, comprised the following steps:
(1) preparation of reference substance solution:Take typhaneoside, Isorhamnetin-3-O-neohespeidoside reference substance appropriate, precision claims It is fixed, add methanol that every 1ml is made containing 50;
(2) preparation of need testing solution:This product about 0.5g is taken, it is accurately weighed, put in conical flask with cover, precision adds methanol 50ml, weighed weight, cold soaking is heated to reflux 1 hour after 12 hours, let cool, then weighed weight, and the weight of less loss is supplied with methanol, Shake up, filter, take subsequent filtrate, produce.
(3) HPLC is detected:It is accurate respectively to draw above two reference substance solution and each 10 μ 1 of need testing solution, note people's liquid phase Chromatograph, measure;Testing conditions are:Using octadecylsilane chemically bonded silica as filler;With the phosphoric acid solution of acetonitrile -0.05% (15:85) it is mobile phase;Detection wavelength is 254nm.
(4) sample size determines:3 batches of sample assay data.Three batches are free of typhaneoside and Isorhamnetin -3-O- Neohesperidin, as a result see accompanying drawing 6,7,8,9.

Claims (10)

1. a kind of detection method of the peaceful preparation of colon, comprises the following steps:
(1) preparation of reference substance solution:
Isorhamnetin reference substance is weighed, is placed in volumetric flask, adds 25~75% ethanol or methanol, ultrasonic dissolution is simultaneously settled to quarter Degree, shakes up, reference substance solution is made;
(2) preparation of need testing solution:
The preparation of the peaceful need testing solution of colon:Take the peaceful sample of colon to be placed in volumetric flask, it is accurately weighed, add 25~75% methanol or Ethanol, 30~90min of ultrasound, is cooled to room temperature, is settled to scale, filtering;Precision measures subsequent filtrate and is evaporated, and be dissolved in water transfer Into 100ml triangular pyramidal bottles, add 1ml hydrochloric acid;It is placed in water-bath and is heated to reflux 30~60min, is cooled to after room temperature with water It is full to close n-butanol or chloroform or ethyl acetate extraction;Transfer is settled in volumetric flask after extract is evaporated, and is produced;
(3) HPLC is detected:
Reference substance solution and the peaceful preparation need testing solution of colon obtained by aspiration step (1) and (2) respectively, is injected separately into efficient liquid It is measured in chromatography;
Wherein, chromatographic condition is:Chromatographic column is C18Reverse-phase chromatographic column;UV-detector;Column temperature is 30~35 DEG C;Detection wavelength is 350~370nm;Mobile phase A is acetonitrile, and Mobile phase B is 0.1~1% phosphoric acid solution, and flow velocity is 0.8~1.2ml/min;Analysis 30 minutes time;Isocratic elution, mobile phase A:Volume ratio=45~55 of Mobile phase B:55~45.
2. according to the method for claim 1, it is characterised in that:The preparation of step (1) reference substance solution is according to following Method is carried out:
Isorhamnetin reference substance 5mg is weighed, is placed in volumetric flask, adds 25~75% ethanol or methanol, ultrasonic dissolution is simultaneously settled to Scale, shake up, reference substance solution is made.
3. according to the method for claim 1, it is characterised in that:The preparation of step (2) need testing solution is according to following Method is carried out:
The preparation of the peaceful need testing solution of colon:
The peaceful sample of colon about 1~5g is taken to be placed in 50ml volumetric flasks, it is accurately weighed, add 30~70% methanol or ethanol 45mL, surpass 30~90min of sound, is cooled to room temperature, is settled to 50ml, filtering;Precision measures 10~30ml of subsequent filtrate and is evaporated, and adds water 20ml molten Solution is transferred in 100ml triangular pyramidal bottles, adds 1ml hydrochloric acid;It is placed in water-bath and is heated to reflux 30~90min;It is cooled to room temperature Extracting n-butyl alcohol is closed so that water is full 1~5 time, every time 10~30ml afterwards;Transfer is settled to 10ml volumetric flasks after extract is evaporated, i.e., .
4. according to the method described in claim 1-3 any claims, it is characterised in that:Chromatographic column in the step (3) It is the C that column length is 250mm18Reverse-phase chromatographic column.
5. according to the method described in claim 1-3 any claims, it is characterised in that:Detection wavelength in the step (3) For 370nm.
6. according to the method described in claim 1-3 any claims, it is characterised in that:Mobile phase B is in the step (3) 1% phosphoric acid solution.
7. according to the method described in claim 1-3 any claims, it is characterised in that:Flow velocity is in the step (3) 1.0ml/min。
8. according to the method described in claim 1-3 any claims, it is characterised in that:Methanol in the step (1) and (2) Or concentration of alcohol is 50%.
9. according to the method described in claim 1-3 any claims, it is characterised in that:Mobile phase A in the step (3): Volume ratio=53 of Mobile phase B:47.
10. according to the method described in claim 1-3 any claims, it is characterised in that:It is ultrasonically treated in the step (2) Time is 30 minutes, and return time is 60 minutes.
CN201610870711.3A 2016-09-30 2016-09-30 A kind of detection method of the peaceful preparation of colon Pending CN107884480A (en)

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CN101279055A (en) * 2008-05-19 2008-10-08 王世锋 Novel therapeutic use of ginseng and astragali pollen preparations and quality control method
EP2258391A1 (en) * 2009-06-05 2010-12-08 Stallergenes S.A. Reduction of in vitro genotoxicity of pollen extracts by removal of flavonoids
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唐光明等: "HPLC法测定蒲黄片中异鼠李素的含量", 《中国药事》 *
文红梅等: "HPLC法测定蒲黄中总黄酮的含量", 《现代中药研究与实践》 *

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Application publication date: 20180406