CN104931601A - Method for simultaneously detecting multiple chemical medicines illegally added into liquid health-care food - Google Patents

Abstract

The invention discloses a method for simultaneously detecting multiple chemical medicines illegally added into a liquid health-care food and aims to provide the method which is simple, convenient, accurate and quick in operation, can simultaneously analyze 17 illegally added chemicals, and can be used for aiding qualitative screening and quantitative detection on the illegally added chemical medicines in a memory-improving health-care food. The technical scheme is that the method sequentially comprises the following steps of (1) preparing a standard solution; (2) making a standard work curve; (3) pre-treating a sample; (4) performing purification. The invention belongs to the technical field of medicine detection.

Description

The method of the illegal number of chemical medicine added in Simultaneously test health-care liquid food

Technical field

The present invention relates to the mensuration that a kind of medicine illegally adds product, specifically, relate to the method for the illegal number of chemical medicine added in a kind of Simultaneously test health-care liquid food, belong to medical detection technique field.

Background technology

The health care of the health food of current China approved has fat-reducing, alleviating physical fatigue, auxiliary antilipemic, aided blood pressure-lowering, auxiliary hyperglycemic, auxiliary improvement of memory power etc. 27 kinds, in recent years, along with the continuous increase of social competition's pressure and the expansion of astogeny society, auxiliary improvement of memory power class health products are just stepping in the study of people, work and life, and common function is improved memory, supplements brain nutrition etc.The health care of " auxiliary improvement of memory " normally runs necessary material mainly through supplementary brain, increase brain cell to the utilization of oxygen, the effects such as the material that can promote that brain metabolism is discharged are provided.But illegal businessman is in order to make health products rapid-action, to reach object of pushing up sales, in health products, illegally can add chemicals, but the spinoff of chemicals often has a strong impact on the healthy of people.

The screening method illegally added for auxiliary improvement of memory power class health food is at present less, and the method simultaneously detecting multiple illegal interpolation medicine is few especially.Therefore, for potential in this type of health food, may add chemicals set up one effectively, detection method accurately, the adverse events caused after prevention auxiliary improvement of memory class health food comes into the market occurs, and guarantees its security.This research by setting up HPLC analytical method to 17 kinds of short intelligence class chemicalss (donepezil, huperzine, Edaravone, Betahistine, Retilian Simplex, Piracetam, galanthamine, caffeine, aniracetam, Flumazenil, estriol, flunarizine, naproxen, diethylstilbestrol, Nimodipine, almitrine, C14H10Cl2NNaO2), is applied to the illegal examination adding chemicals in Improving memory power class health food according to related invention.

Summary of the invention

For the problems referred to above, the object of this invention is to provide the method for the illegal number of chemical medicine added in a kind of Simultaneously test health-care liquid food, the method is easy and simple to handle, accurate, Fast Measurement health-care liquid food 17 kinds illegally adds chemicals, can be used for the qualitatively screening of undeclared prescription drugs in auxiliary improvement of memory class health food and quantitatively detects.

Technical scheme provided by the invention is such:

In Simultaneously test health-care liquid food, a method for the illegal number of chemical medicine added, comprises the steps: successively

1) preparation of standard solution

To take 17 kinds of standard substances appropriate for precision respectively, and adding 60% methanol aqueous solution, to make into concentration be 0.2mg/mL, detects 17 kinds of chemicals list mark chromatograms and mixedly mark chromatogram;

2) standard working curve

Get standard solution and add 60% methanol aqueous solution in right amount, be mixed with 40 μ g/mL, 80 μ g/mL, 100 μ g/mL, 200 μ g/mL, 400 μ g/mL respectively, molten as standard working curve;

3) sample pre-treatments

Get and be equivalent to an oral dose, be placed in 50mL volumetric flask, add 20mL 60% methanol aqueous solution, ultrasonic process 30 minutes, is settled to scale with 60% methanol-water solution, shakes up, and filter, filtrate is stand-by;

Take and be equivalent to an oral dose, be placed in 100mL conical flask, precision adds 50mL 60% methanol aqueous solution, claims its weight, ultrasonic extraction 30 minutes, and cooling, supplies weight with 60% methanol-water solution, and filter, filtrate is stand-by;

4) purify

Precision measures above-mentioned filtrate 2mL with about 1mL/min flow velocity by C18-SPE post, with 3mL 60% methanol-water wash-out, merges efflux and eluent, namely obtains testing sample with 0.22 μm of organic membrane filtration;

Wherein, described chromatographic condition is:

Chromatographic column: Thermo AccliaimTM Mixed-Mode WCX-1 post; Mobile phase: A: water; B:100mmol/L sodium dihydrogen phosphate buffer salt, pH 6.4; C: acetonitrile; Gradient elution program: 0 ~ 10min, 85% ~ 45%A, 10%B, 5% ~ 45%C; 10 ~ 12min, 45%A, 10%B, 45%C; 12 ~ 15min, 45% ~ 31%A, 10% ~ 14%B, 45%C; 15 ~ 15.1min, 31% ~ 0%A, 14% ~ 50%B, 50%C; 15.1 ~ 17min, 0%A, 50%B, 50%C; 17 ~ 17.1min, 0% ~ 85%A, 50% ~ 10%B, 50% ~ 5%C; 17.1 ~ 20min, 85%A, 10%B, 5%C; 3min is balanced under 85%A, 10%B, 5%C.Flow velocity: 0.8mL/min; Column temperature: 40 DEG C; Sample size: 2 μ l; Determined wavelength: 220nm is main determined wavelength; 254nm, 280nm assist qualitative.

Compared with prior art, technical scheme provided by the invention establishes the high-efficient liquid phase method using 17 kinds of chemicals content that may add in same chromatographic condition Simultaneously test auxiliary improvement of memory class health food, complete in 20min and the analysis of each compound is measured, when ensureing degree of separation, achieve high throughput analysis fast and effectively, can be monitoring auxiliary improvement of memory class health food and illegally add medicine strong technical support is provided.

Accompanying drawing explanation

Fig. 1 is 17 kinds of chemicals list mark chromatograms;

Fig. 2 is 17 kinds of chemicalses mixed mark contrast color spectrogram;

Fig. 3 is the chromatogram of formulation samples;

Fig. 4 is reagent blank chromatogram.

Wherein: 1 Piracetam; 2 naproxens; 3 caffeines; 4 Edaravones; 5 diclofenacs; 6 aniracetams; 7 Fo Maxini; 8 Retilian Simplexs; 9 estriol; 10 huperzines; 11 Nimodipines; 12 galanthamines; 13 betahistines; 14 diethylstilbestrols; 15 almitrines; 16; Donepezil; 17, Buddhist cinnarizine; A liquid preparation.

Embodiment

Mode below by embodiment further illustrates the present invention, but does not form any limitation of the invention, and the amendment of anyone limited number of time made in right of the present invention is still in right of the present invention.

Embodiment 1

1 materials and methods

1.1 material

1.1.1 sample source

Auxiliary improvement of memory power class health food derives from market sale sample.

1.1.2 key instrument and reagent

Agilent 1260 high performance liquid chromatograph (diode array detector, U.S. Agilent), XA205DU electronic analytical balance (Mei Tele company of Switzerland), Classic UVF Superpure water machine (ELGA company of Britain), P300H ultrasonic cleaner (German Elma company), Sigma 3K15 supercentrifuge (Sartorius AG), C18-SPE post (60mg/3mL, Tianjin Bonaaijieer Technology Co., Ltd).

Donepezil, huperzine, Edaravone, Betahistine, Retilian Simplex, Piracetam, galanthamine, caffeine, aniracetam, Flumazenil, estriol, flunarizine, naproxen, diethylstilbestrol, Nimodipine, almitrine, C14H10Cl2NNaO2 reference substance are all purchased from National Institute for Food and Drugs Control, and purity all >=98.5%; Methyl alcohol and acetonitrile (liquid quality and grade, B & J), it is pure that other reagent is analysis.Experimental water is the deionized water purifying system's filtration through ELGA PURELAB Classic UVF.

1.2 method

1.2.1 the preparation of standard solution

1.2.1.1 standard solution: to take 17 kinds of standard substances appropriate for precision respectively, adding 60% methanol aqueous solution, to make into concentration be 0.2mg/mL; 17 kinds of chemicals list mark chromatograms are shown in Fig. 1, and mixed mark chromatogram is shown in Fig. 2.

1.2.1.2 standard working curve: get standard solution and add 60% methanol aqueous solution in right amount, is mixed with 40 μ g/mL, 80 μ g/mL, 100 μ g/mL, 200 μ g/mL, 400 μ g/mL, respectively as standard working curve solution.

1.2.2 sample pre-treatments

Take and be equivalent to an oral dose, be placed in 100mL conical flask, precision adds 50mL 60% methanol aqueous solution, claims its weight, ultrasonic extraction 30 minutes, and cooling, supplies weight with 60% methanol-water solution, and filter, filtrate is stand-by.

1.2.2.4 purify: precision measure above-mentioned filtrate 2mL with about 1mL/min flow velocity by C18-SPE post (respectively with 3mL methyl alcohol before use, water activates), with 3mL 60% methanol-water wash-out, merge efflux and eluent, namely obtain testing sample with 0.22 μm of organic membrane filtration.Sample chromatogram figure and reagent blank chromatogram are shown in Fig. 3, Fig. 4.

1.2.3 chromatographic condition

Chromatographic column: Thermo AccliaimTM Mixed-Mode WCX-1 post (150mm 2.1mm, 3 μm); Mobile phase: A: water; B:100mmol/L sodium dihydrogen phosphate buffer salt, pH 6.4; C: acetonitrile; Gradient elution program: 0 ~ 10min, 85% ~ 45%A, 10%B, 5% ~ 45%C; 10 ~ 12min, 45%A, 10%B, 45%C; 12 ~ 15min, 45% ~ 31%A, 10% ~ 14%B, 45%C; 15 ~ 15.1min, 31% ~ 0%A, 14% ~ 50%B, 50%C; 15.1 ~ 17min, 0%A, 50%B, 50%C; 17 ~ 17.1min, 0% ~ 85%A, 50% ~ 10%B, 50% ~ 5%C; 17.1 ~ 20min, 85%A, 10%B, 5%C; 3min is balanced under 85%A, 10%B, 5%C.Flow velocity: 0.8mL/min; Column temperature: 40 DEG C; Sample size: 2 μ l; Determined wavelength: 220nm is main determined wavelength; 254nm, 280nm assist qualitative; The maximum absorption wavelength (see table 1) of each compound.

2. result and discussion

The selection of 2.1 chromatographic conditions

2.1.1 the selection of chromatographic column

Three kinds of liquid-phase chromatographic columns of Thermo company of the U.S. are selected to compare, be respectively syncronis C18-AQ 4.6 × 250mm, 5 μm), Hilic-10 (2.1 × 150mm, 3 μm) and AcclaimTMMixed-Mode WCX-1 (2.1 × 150mm, 3um), due to 17 kinds of determinands, be mostly alkaline matter, also small part acidic materials are had, C18 chromatographic column and Hilic post fail to realize that 17 kinds of compounds are disposable is separated, and Ar ion mixing type WCX chromatographic column is separated, then can realizes single injected sampling and all substances are separated.

2.1.2 the selection of mobile phase

Because classes of compounds to be analyzed is more, different polarities is larger, while selecting Ar ion mixing type WCX chromatographic column, the change of mobile phase pH directly can affect the appearance time of each material, technical scheme provided by the invention just by the graded wash-out of three kinds of solvents, thus changes pH change when analyzing, and reaches 17 kinds of substances and is separated in WCX chromatographic column, but the pH of buffer salt should be 6.3 ~ 6.5, otherwise Piracetam, naproxen and caffeine are difficult to be separated.

2.1.3 the selection of determined wavelength

Because of 17 kinds of chemicals maximum absorption wavelengths at 210 ~ 280nm not etc., Piracetam is in this scope more without maximum absorption wavelength, therefore the present invention adopts diode array detector, selects 220nm to be main determined wavelength, and 254nm, 280nm assist qualitative; 17 kinds of chemicalses can be detected, 254nm, 280nm wavelength response value and 220nm response only need be ratio versus by result, can realize auxiliary qualitative simultaneously.

2.2 the stability of Standard Stock solutions

To Standard Stock solutions respectively at 0 hour, 1 hour, 8 hours, 12 hours and 24 hours inserting needles, investigate the stability of solution.Research shows, contrast solution is effectively used in had Piracetam in 8 hours, there are galanthamine, Betahistine, diethylstilbestrol, almitrine, donepezil, flunarizine in 12 hours, within 24 hours, have naproxen, caffeine, Edaravone, C14H10Cl2NNaO2, aniracetam, Flumazenil, Retilian Simplex, estriol, huperzine, Nimodipine.

2.3 linear relationships, detection limit, recovery test

2.3.1 linear relationship, detection limit

Get standard working curve by 1.2 the analysis of chromatographic condition sample introduction, carry out regretional analysis with the concentration X (mg/L) of peak area Y to standard items, calculate detection limit (LOD) according to S/N:3, S/N:10 calculates detection limit (LOQ), the regression equation of 17 kinds of chemicalses, the range of linearity, related coefficient, detection limit and quantitative limit.(see table 1)

Table 1 17 kinds of chemicalses detect data

2.3.2 application of sample recovery test, replica test

Recovery of standard addition test is carried out in the blank sample of the matrix after measured not containing 17 kinds of chemicalses.Test by this method, replicate determination 6 times, calculate the relative standard deviation of replication.The average recovery of standard addition scope obtained is 85% ~ 120%.(see table 2).

Table 2 is 17 kinds of chemicals precision and the recovery

Auxiliary improvement of memory class health food fraction matrix more complicated, suitable purification is necessary.Solid phase extraction techniques is the purification means that application is more at present.The present invention compares C18-SPE post, silica gel SPE post, HLB-SPE post are made comparisons.Result shows, utilizes C18-SPE column purification except tackling except most of impurity, can also be complete to 17 kinds of chemicals wash-outs, all has the good recovery; And silica gel SPE post, although complete wash-out 17 kinds of chemicalses, removal of impurities can not be carried out to impurity; Although HLB-SPE post can tackle impurity, also to 17 kinds of chemicals interceptions, affect its recovery.Therefore the purification condition that the present invention selects is C18-SPE post.

The evaluation of 2.5 different brands high performance liquid chromatographs

This experiment, except selecting the efficient liquid phase instrument of Agilent, has also selected Thermo's 3000 efficient liquid phase instrument, two instruments to the test with a contrast and sample, all without significant difference, thus this method to instrument without particular/special requirement.

The mensuration of 2.6 actual samples

In this experiment, 17 kinds of short intelligence class chemicalses all do not detect.

The present invention establishes the high-efficient liquid phase method using 17 kinds of chemicals content that may add in same chromatographic condition Simultaneously test auxiliary improvement of memory class health food, complete in 20min and the analysis of each compound is measured, when ensureing degree of separation, achieve high throughput analysis fast and effectively, can be monitoring auxiliary improvement of memory class health food and illegally add medicine strong technical support is provided.

Claims (1)

1. a method for the number of chemical medicine illegally added in Simultaneously test health-care liquid food, is characterized in that, comprise the steps: successively

1) preparation of standard solution

To take 17 kinds of standard substances appropriate for precision respectively, and adding 60% methanol aqueous solution, to make into concentration be 0.2mg/mL, detects 17 kinds of chemicals list mark chromatograms and mixedly mark chromatogram;

2) standard working curve

Get standard solution and add 60% methanol aqueous solution in right amount, be mixed with 40 μ g/mL, 80 μ g/mL, 100 μ g/mL, 200 μ g/mL, 400 μ g/mL respectively, molten as standard working curve;

3) sample pre-treatments

Get and be equivalent to an oral dose, be placed in 50mL volumetric flask, add 20mL 60% methanol aqueous solution, ultrasonic process 30 minutes, is settled to scale with 60% methanol-water solution, shakes up, and filter, filtrate is stand-by;

4) purify

Precision measures above-mentioned filtrate 2mL with about 1mL/min flow velocity by C18-SPE post, with 3mL 60% methanol-water wash-out, merges efflux and eluent, namely obtains testing sample with 0.22 μm of organic membrane filtration;

Wherein, described chromatographic condition is:

Chromatographic column: Thermo AccliaimTM Mixed-Mode WCX-1 post; Mobile phase: A: water; B:100mmol/L sodium dihydrogen phosphate buffer salt, pH 6.4; C: acetonitrile; Gradient elution program: 0 ~ 10min, 85% ~ 45%A, 10%B, 5% ~ 45%C; 10 ~ 12min, 45%A, 10%B, 45%C; 12 ~ 15min, 45% ~ 31%A, 10% ~ 14%B, 45%C; 15 ~ 15.1min, 31% ~ 0%A, 14% ~ 50%B, 50%C; 15.1 ~ 17min, 0%A, 50%B, 50%C; 17 ~ 17.1min, 0% ~ 85%A, 50% ~ 10%B, 50% ~ 5%C; 17.1 ~ 20min, 85%A, 10%B, 5%C; 3min is balanced under 85%A, 10%B, 5%C.Flow velocity: 0.8mL/min; Column temperature: 40 DEG C; Sample size: 2 μ l; Determined wavelength: 220nm is main determined wavelength; 254nm, 280nm assist qualitative.