Summary of the invention
The object of this invention is to provide a kind ofly to extract rapidly, precision is high, solvent load the is few method extracting Hesperidin from lenitive pill.
Technical scheme provided by the invention is: a kind of method extracting Hesperidin from lenitive pill, comprises the following steps:
Step 1: mix with diatomite after lenitive pill is pulverized; Wherein, in the lenitive pill after pulverizing, powder and diatomaceous weight ratio are 1:1;
Step 2: adopt ASE extraction process extraction Hesperidin, collect extraction liquid, wherein, the extraction solvent that ASE extraction process adopts is methyl alcohol;
Step 3: will filter after extraction liquid constant volume and obtain the extraction liquid containing Hesperidin.
Extract from above-mentioned lenitive pill in the method for Hesperidin, in described step 2, extraction temperature is 90-120 DEG C.
Extract from above-mentioned lenitive pill in the method for Hesperidin, in described step 2, extraction time is 5-10min.
Extract from above-mentioned lenitive pill in the method for Hesperidin, in described step 2, the flush volume of ASE extraction process is more than or equal to the volume of 100% abstraction pool.
Extract from above-mentioned lenitive pill in the method for Hesperidin, in described step 2, extraction cycle number of times is more than or equal to 2 times.
Extract from above-mentioned lenitive pill in the method for Hesperidin, in described step 2, adopt ASE350 type accelerated solvent extraction to carry out the operation of ASE extraction process, the system pressure of setting ASE350 type accelerated solvent extraction is 1700psi, and the nitrogen purging time is 60s.
Extract from above-mentioned lenitive pill in the method for Hesperidin, in described step 3, extraction liquid is settled to 25ml, shakes up rear filtration and namely obtains extraction liquid containing Hesperidin.
The present invention is after employing technique scheme, and its beneficial effect had is:
The present invention adopts and accelerates the extraction efficiency that abstraction technique effectively can improve Hesperidin in lenitive pill, and ensures higher accuracy rate, reduce extraction solvent consumption, and this extracting method can not produce any detrimentally affect to detection below.
Embodiment
Below in conjunction with embodiment, technical scheme of the present invention is described in further detail, but does not form any limitation of the invention.
Embodiment 1:
Instrument used by the present embodiment and consumptive material are: pulverizer, electronic analytical balance (XA205DU): sensibility reciprocal 0.001g, accelerated solvent extraction model: ASE-350 (10ml abstraction pool, 50ml receiving flask), volumetric flask: 25ml.
The present embodiment lenitive pill used has been Foshan Feng sex medicine company limited produces, lot number: 140001.
Add diatomite 1.0g in abstraction pool, precision takes powder in lenitive pill (140001) and is about 0.5g, adds diatom 0.5g and mixes in rearmounted 5ml abstraction pool; The selection of Accelerate solvent extraction condition: temperature: 120 DEG C, flush volume: 100%, static extracting time: 5 minutes, cycle index: 2 times.Solvent: methyl alcohol, after extraction terminates, is transferred in 25ml volumetric flask by extraction liquid, be settled to scale, shake up with methanol dilution, filters, gets subsequent filtrate, to obtain final product.
The preparation of standard
Precision takes Hesperidin reference substance 19.45mg, be placed in 250ml measuring bottle, be diluted to scale with dissolve with methanol (if desired supersound process), shake up (namely Hesperidin concentration is 74.14 μ g/ml), precision measures 5ml, puts in 10ml measuring bottle, is diluted to scale by moving phase, shake up, obtain (every 1ml is containing Hesperidin 37.07 μ g).
Comparative example 1
This comparative example is the method for pharmacopeia record, be specially: get lenitive pill (140001), shred, mixing, get about 2.5g, accurately weighed, add diatomite appropriate, grind well, be placed in apparatus,Soxhlet's, add sherwood oil (60 DEG C-90 DEG C) 80ml, reflux 2-3 hour, discard sherwood oil, the dregs of a decoction volatilize, add methyl alcohol 80ml, reflux is to extracting liquid colourless, let cool, filter, filtrate is put in 100ml measuring bottle, with a small amount of methyl alcohol gradation washing container, washing lotion is filtered in same measuring bottle, add methyl alcohol to scale, shake up, add moving phase to scale, shake up, obtain.
Detect
Adopt U-3000 liquid chromatograph to detect, detect parameters is:
Chromatographic column: kinete x2.6 μ XB-C18100A 100 × 4.60mm post, moving phase: methyl alcohol-7% acetic acid (37:63), flow velocity: 0.7ml/min, column temperature: 40 DEG C, determined wavelength: 283nm, sample size: 5 μ l.
Following Fig. 1 and Fig. 2 of detected result of embodiment 1 and standard.Fig. 3 is the spectrogram that comparative example 1 obtains, and the sample of present method resulting separation can obtain collection of illustrative plates complete clearly, and the sample test spectrogram obtained with the separation method of comparative example 1 has height repeatability.
Embodiment 2
The present embodiment is identical with the step of embodiment 1, and different places is, has investigated extraction efficiency in the scope of 85-120 DEG C.Concrete outcome sees the following form table 1.
Table 1 temperature affects extraction yield result table
Embodiment 3
The present embodiment is identical with the step of embodiment 1, and different places is, in the scope of the cycle index of 1-4 time, investigated extraction efficiency.Concrete outcome sees the following form table 2.
Table 2 cycle index affect table
Classification |
1 time |
2 times |
3 times |
4 times |
Content/(mg/ ball) |
3.20 |
18.31 |
20.51 |
20.51 |
Embodiment 4
The present embodiment is identical with the step of embodiment 1, and different places is, in the scope of the static extracting time of 3-10min, investigated extraction efficiency.Concrete outcome sees the following form table 3.
The table 3 static extracting time affect table
Time |
3min |
5min |
7min |
10min |
Content/(mg/ ball) |
5.45 |
18.28 |
20.51 |
20.51 |
Embodiment 5
The present embodiment is identical with the step of embodiment 1, and different places is, in the scope being equivalent to the flush volume of abstraction pool volume of 0-150%, investigated extraction efficiency.Concrete outcome sees the following form table 3.
Table 4 flush volume affect table
Flush volume |
0 |
40% |
80% |
100% |
120% |
150% |
Content/(mg/ ball) |
18.01 |
18.18 |
18.29 |
18.31 |
18.31 |
18.31 |
Can be found out by embodiment 2-5, consider from operating time and cost angle, the optimized parameter of ASE extraction process of the present invention is as embodiment 1.
The impact that other experiment conditions detect HPLC
1, the investigation of linearity range
Draw above-mentioned standard solution (concentration: 74.14 μ g/ml) respectively, be diluted to 3.707 μ g/ml, 18.535 μ g/ml, 37.070 μ g/ml, 55.605 μ g/ml, 74.140 μ g/ml respectively, inject HPLC instrument to measure, with reference substance concentration for X-coordinate, take peak area as ordinate zou, drawing standard curve, carries out linear regression.Hesperidin concentration is good with peak area linear relationship within the scope of 3.707 ~ 74.14 μ g/ml, and regression equation is: Y=14.421X-7.4373, R
2=0.9998.
2, solvent is on the impact of experiment
Get the negative control sample of scarce lenitive pill, negative controls solution is prepared by the method for embodiment 1, and carry out measurement result by the chromatographic condition of above-mentioned detection method and to show in negative control on the position identical with Hesperidin, without absorption peak, to show that solvent is to the negative interference of this product assay.
3, circulation ratio test
Get same sample lots, by the method described in embodiment 1, prepare 6 parts of need testing solutions, carry out measurement result by the chromatographic condition of above-mentioned detection method, the RSD calculating Hesperidin is 1.0%.As shown in table 5, result shows, this test method circulation ratio is good.
Table 5 reproducible test results
Present method separation accuracy is high, reproducible, and the used time is short, is conducive to the operation of Simplified analysis personnel.
Above-describedly be only preferred embodiment of the present invention, all do within the scope of the spirit and principles in the present invention any amendment, equivalently to replace and improvement etc., all should be included within protection scope of the present invention.