Summary of the invention
The object of the invention is to provide a kind of gold fruit to drink oral liquor.
Purpose of the present invention is exactly in order to provide a kind of gold fruit to drink oral liquor.Solve Hesperidin and extract inadequate problem, improve the rate of transform of medical material effective ingredient.Utilize certain density ethanol to extract the effective ingredient of Hesperidin in the Pericarpium Citri Reticulatae medical material as solvent, clear paste adds aqueous slkali again and transfers PH to certain scope, has namely solved the Hesperidin solubility, has solved the clarity problem of this kind again.
The invention provides the preparation method that a kind of gold fruit drinks oral liquid, wherein the extracting method of Pericarpium Citri Reticulatae glycosides also is applicable to other oral formulations that contain Pericarpium Citri Reticulatae.
The present invention seeks to be achieved through the following technical solutions.
[prescription]: Radix Rehmanniae 73g Radix Scrophulariae 55g FRUCTUS TERMINALIAE IMMATURUS 18g
Periostracum Cicadae 27g 55g Radix Ophiopogonis Semen Sterculiae Lychnophorae 18g
Radix Adenophorae 55g Radix Pseudostellariae 55g Pericarpium Citri Reticulatae 36g
Oleum menthae 0.5ml
[preparation method]:
Step 1, the Radix Rehmanniae, Radix Scrophulariae decocting boil three times, and all the other medical materials (except Pericarpium Citri Reticulatae) decocting boils 2 times, and medicinal liquid merges, and concentrate to add ethanol and leave standstill, and get supernatant and reclaim ethanol to obtain clear paste not standby to having the alcohol flavor, concentrating.
Step 2, get the Pericarpium Citri Reticulatae medical material, add alcohol reflux, the extracting solution concentrating under reduced pressure reclaims ethanol to there not being the alcohol flavor, adds NaOH solution and transfers PH all to dissolve to Hesperidin, and clear paste is standby.
Step 3, merging 1,2 clear paste are dissolved in water and are mixed with oral liquid.
Preferred preparation method of the present invention is as follows:
Step 1, the Radix Rehmanniae, Radix Scrophulariae add 8 times of water gagings and decoct three times, and each 2 hours, merging filtrate filtered; All the other medical materials (except Pericarpium Citri Reticulatae) add 8 times of water gagings and decoct 2 times, each 30 minutes, filter, filtrate and the Radix Rehmanniae, Radix Scrophulariae medicinal liquid merge, be concentrated into relative density 1.15 (60 ℃ of surveys), clear paste adds 7 times of amounts and reclaims ethanol (from minuent to height), makes to contain the alcohol amount and reach 60%, left standstill 72 hours, get the supernatant decompression recycling ethanol to there not being the alcohol flavor, reconcentration is received cream to relative density 1.30 (80 ℃ of surveys), cross 200 order filter clothes, it is standby to receive cream.
Step 2, get the Pericarpium Citri Reticulatae medical material, add 60% alcoholic solution reflux, extract, three times, each 1.5h, add for the first time 8 times of amount 60% ethanol, 60% ethanol of 6 times of amount preparations of second and third time usefulness, concentrating under reduced pressure reclaims ethanol to there not being the alcohol flavor, and clear paste adds 20%NaOH solution and transfers PH to 12.0 all to dissolve to Hesperidin, and clear paste is standby.
Step 3, merging 1,2 clear paste are put and are boiled 10-15 minute (pressure 0.2MPa), add 7 times of water gagings and sodium benzoate (using earlier water dissolution), precipitate 48 hours, get supernatant liquid filtering.
Step 4, filtrate add sucrose 200g, citric acid 1g,, boiling sterilization 30 minutes is put cold, adjusting total amount with purified water is 1000ml, puts coldly, adds Oleum menthae (using earlier dissolve with ethanol), stirs, filter with the rustless steel sheet frame, fill, sterilization, packing, that is, 15ml/ props up.
Method of the present invention obtains through screening, and screening process is as follows:
Method one,
1, the Radix Rehmanniae, Radix Scrophulariae add 8 times of water gagings decoctions three times, and each 2 hours, merging filtrate filtered; All the other medical materials (except Pericarpium Citri Reticulatae) add 8 times of water gagings and decoct 2 times, each 30 minutes, filter, filtrate and the Radix Rehmanniae, Radix Scrophulariae medicinal liquid merge, be concentrated into relative density 1.15 (60 ℃ of surveys), clear paste adds 7 times of amounts and reclaims ethanol (from minuent to height), makes to contain the alcohol amount and reach 60%, left standstill 72 hours, get the supernatant decompression recycling ethanol to there not being the alcohol flavor, reconcentration is received cream to relative density 1.30 (80 ℃ of surveys), cross 200 order filter clothes, it is standby to receive cream.
2, get the Pericarpium Citri Reticulatae medical material, add 60 alcoholic solution reflux, extract, three times, each 1.5h adds 8 times of amount 60% ethanol for the first time, and 60% ethanol of 6 times of amount preparations of second and third time usefulness, concentrating under reduced pressure reclaim ethanol to there not being the alcohol flavor, and clear paste is standby.
3, merging 1,2 clear paste are put and are boiled 10-15 minute (pressure 0.2MPa), add 7 times of water gagings and sodium benzoate (using earlier water dissolution), precipitate 48 hours, get supernatant liquid filtering.
4, filtrate adds sucrose 200g, citric acid 1g,, boiling sterilization 30 minutes; Put coldly, adjusting total amount with purified water is 1000ml, puts coldly, adds Oleum menthae (use earlier dissolve with ethanol), stirs, and with the filtration of rustless steel sheet frame, fill, sterilization, packing, that is, 15ml/ props up.
Method two,
1, the Radix Rehmanniae, Radix Scrophulariae add 8 times of water gagings decoctions three times, and each 2 hours, merging filtrate filtered; All the other medical materials add 8 times of water gagings and decoct 2 times, each 30 minutes, filter, filtrate and the Radix Rehmanniae, Radix Scrophulariae medicinal liquid merge, be concentrated into relative density 1.15 (60 ℃ of surveys), clear paste adds 7 times of amounts and reclaims ethanol (from minuent to height), makes to contain the alcohol amount and reach 60%, left standstill 72 hours, get the supernatant decompression recycling ethanol to there not being the alcohol flavor, reconcentration is received cream to relative density 1.30 (80 ℃ of surveys), cross 200 order filter clothes, it is standby to receive cream.
2, get the Pericarpium Citri Reticulatae medical material, add 80% alcoholic solution reflux, extract, three times, each 1.5h adds 8 times of amount 60% ethanol for the first time, and 60% ethanol of 6 times of amount preparations of second and third time usefulness, concentrating under reduced pressure reclaim ethanol to there not being the alcohol flavor, and clear paste is standby.
3, merging 1,2 clear paste are put and are boiled 10-15 minute (pressure 0.2MPa), add 7 times of water gagings and sodium benzoate (using earlier water dissolution), precipitate 48 hours, get supernatant liquid filtering.
4, filtrate adds sucrose 200g, citric acid 1g,, boiling sterilization 30 minutes; Put coldly, adjusting total amount with purified water is 1000ml, puts coldly, adds Oleum menthae (use earlier dissolve with ethanol), stirs, and with the filtration of rustless steel sheet frame, fill, sterilization, packing, that is, 15ml/ props up.
Method three,
1, the Radix Rehmanniae, Radix Scrophulariae add 8 times of water gagings decoctions three times, and each 2 hours, merging filtrate filtered; All the other medical materials add 8 times of water gagings and decoct 2 times, each 30 minutes, filter, filtrate and the Radix Rehmanniae, Radix Scrophulariae medicinal liquid merge, be concentrated into relative density 1.15 (60 ℃ of surveys), clear paste adds 7 times of amounts and reclaims ethanol (from minuent to height), makes to contain the alcohol amount and reach 60%, left standstill 72 hours, get the supernatant decompression recycling ethanol to there not being the alcohol flavor, reconcentration is received cream to relative density 1.30 (80 ℃ of surveys), cross 200 order filter clothes, clear paste is standby.
2, get the Pericarpium Citri Reticulatae medical material, add 60% alcoholic solution percolation, left standstill 24 hours, with the speed of 3ml/kg/min percolation slowly, collect percolate heating evaporation ethanol, being concentrated into proportion is 1.30, crosses 200 order filter clothes, and clear paste is standby.
3, merging 1,2 clear paste are put and are boiled 10-15 minute (pressure 0.2MPa), add 7 times of water gagings and sodium benzoate (using earlier water dissolution), precipitate 48 hours, get supernatant liquid filtering.
4, filtrate adds sucrose 200g, citric acid 1g,, boiling sterilization 30 minutes; Put coldly, adjusting total amount with purified water is 1000ml, puts coldly, adds Oleum menthae (use earlier dissolve with ethanol), stirs, and with the filtration of rustless steel sheet frame, fill, sterilization, packing, that is, 15ml/ props up.
Method four,
1, the Radix Rehmanniae, Radix Scrophulariae add 8 times of water gagings decoctions three times, and each 2 hours, merging filtrate filtered; All the other medical materials add 8 times of water gagings and decoct 2 times, each 30 minutes, filter, filtrate and the Radix Rehmanniae, Radix Scrophulariae medicinal liquid merge, be concentrated into relative density 1.15 (60 ℃ of surveys), clear paste adds 7 times of amounts and reclaims ethanol (from minuent to height), makes to contain the alcohol amount and reach 60%, left standstill 72 hours, get the supernatant decompression recycling ethanol to there not being the alcohol flavor, reconcentration is received cream to relative density 1.30 (80 ℃ of surveys), cross 200 order filter clothes, clear paste is standby.
2, get the Pericarpium Citri Reticulatae medical material, add 80% alcoholic solution percolation, left standstill 24 hours, with the speed of 3ml/kg/min percolation slowly, collect percolate heating evaporation ethanol, being concentrated into proportion is 1.30, crosses 200 order filter clothes, and clear paste is standby.
3, merging 1,2 clear paste are put and are boiled 10-15 minute (pressure 0.2MPa), add 7 times of water gagings and sodium benzoate (using earlier water dissolution), precipitate 48 hours, get supernatant liquid filtering.
4, filtrate adds sucrose 200g, citric acid 1g,, boiling sterilization 30 minutes; Put coldly, adjusting total amount with purified water is 1000ml, puts coldly, adds Oleum menthae (use earlier dissolve with ethanol), stirs, and with the filtration of rustless steel sheet frame, fill, sterilization, packing, that is, 15ml/ props up.
Method five,
1, the Radix Rehmanniae, Radix Scrophulariae add 8 times of water gagings decoctions three times, and each 2 hours, merging filtrate filtered; All the other medical materials (except Pericarpium Citri Reticulatae) add 8 times of water gagings and decoct 2 times, each 30 minutes, filter, filtrate and the Radix Rehmanniae, Radix Scrophulariae medicinal liquid merge, be concentrated into relative density 1.15 (60 ℃ of surveys), clear paste adds 7 times of amounts and reclaims ethanol (from minuent to height), makes to contain the alcohol amount and reach 60%, left standstill 72 hours, get the supernatant decompression recycling ethanol to there not being the alcohol flavor, reconcentration is received cream to relative density 1.30 (80 ℃ of surveys), cross 200 order filter clothes, it is standby to receive cream.
2, get the Pericarpium Citri Reticulatae medical material, add 60% alcoholic solution reflux, extract, three times, each 1.5h, add for the first time 8 times of amount 60% ethanol, 60% ethanol of 6 times of amount preparations of second and third time usefulness, concentrating under reduced pressure reclaims ethanol to there not being the alcohol flavor, and clear paste adds 20%NaOH solution and transfers PH to 12.0 all to dissolve to Hesperidin, and clear paste is standby.
3, merging 1,2 clear paste are put and are boiled 10-15 minute (pressure 0.2MPa), add 7 times of water gagings and sodium benzoate (using earlier water dissolution), precipitate 48 hours, get supernatant liquid filtering.
4, filtrate adds sucrose 200g, citric acid 1g,, boiling sterilization 30 minutes is put cold, adjusting total amount with purified water is 1000ml, puts coldly, adds Oleum menthae (using earlier dissolve with ethanol), stirs, filter with the rustless steel sheet frame, fill, sterilization, packing, that is, 15ml/ props up.
Method six,
1, the Radix Rehmanniae, Radix Scrophulariae add 8 times of water gagings decoctions three times, and each 2 hours, merging filtrate filtered; All the other medical materials add 8 times of water gagings and decoct 2 times, each 30 minutes, filter, filtrate and the Radix Rehmanniae, Radix Scrophulariae medicinal liquid merge, be concentrated into relative density 1.15 (60 ℃ of surveys), clear paste adds 7 times of amounts and reclaims ethanol (from minuent to height), makes to contain the alcohol amount and reach 60%, left standstill 72 hours, get the supernatant decompression recycling ethanol to there not being the alcohol flavor, reconcentration is received cream to relative density 1.30 (80 ℃ of surveys), cross 200 order filter clothes, clear paste is standby.
2, get the Pericarpium Citri Reticulatae medical material, add 60% alcoholic solution percolation, left standstill 24 hours, with the speed of 3ml/kg/min percolation slowly, collect percolate heating evaporation ethanol, concentrating under reduced pressure reclaims ethanol to there not being the alcohol flavor, clear paste adds 20%NaOH solution and transfers PH to 12.0 all to dissolve to Hesperidin, and clear paste is standby.
3, merging 1,2 clear paste are put and are boiled 10-15 minute (pressure 0.2MPa), add 7 times of water gagings and sodium benzoate (using earlier water dissolution), precipitate 48 hours, get supernatant liquid filtering.
4, filtrate adds sucrose 200g, citric acid 1g,, boiling sterilization 30 minutes; Put coldly, adjusting total amount with purified water is 1000ml, puts coldly, adds Oleum menthae (use earlier dissolve with ethanol), stirs, and with the filtration of rustless steel sheet frame, fill, sterilization, packing, that is, 15ml/ props up.
Method seven,
1, the Radix Rehmanniae, Radix Scrophulariae add 8 times of water gagings decoctions three times, and each 2 hours, merging filtrate filtered; All the other medical materials (except Pericarpium Citri Reticulatae) add 8 times of water gagings and decoct 2 times, each 30 minutes, filter, filtrate and the Radix Rehmanniae, Radix Scrophulariae medicinal liquid merge, be concentrated into relative density 1.15 (60 ℃ of surveys), clear paste adds 7 times of amounts and reclaims ethanol (from minuent to height), makes to contain the alcohol amount and reach 60%, left standstill 72 hours, get the supernatant decompression recycling ethanol to there not being the alcohol flavor, reconcentration is received cream to relative density 1.30 (80 ℃ of surveys), cross 200 order filter clothes, it is standby to receive cream.
2, get the Pericarpium Citri Reticulatae medical material, add 80% alcoholic solution reflux, extract, three times, each 1.5h, add for the first time 8 times of amount 60% ethanol, 60% ethanol of 6 times of amount preparations of second and third time usefulness, concentrating under reduced pressure reclaims ethanol to there not being the alcohol flavor, and clear paste adds 20%NaOH solution and transfers PH to 12.0 all to dissolve to Hesperidin, and clear paste is standby.
3, merging 1,2 clear paste are put and are boiled 10-15 minute (pressure 0.2MPa), add 7 times of water gagings and sodium benzoate (using earlier water dissolution), precipitate 48 hours, get supernatant liquid filtering.
4, filtrate adds sucrose 200g, citric acid 1g, and boiling sterilization 30 minutes is put coldly, and adjusting total amount with purified water is 1000ml, put coldly, add Oleum menthae (use earlier dissolve with ethanol), stir, filter with the rustless steel sheet frame, fill, sterilization, packing, that is, 15ml/ props up.
The selection of table one, Pericarpium Citri Reticulatae extracting method
Conclusion: investigate the result according to above seven kinds of Pericarpium Citri Reticulatae medicinal material extract methods, method five, six all meets the requirements, and wherein the extraction rate of transform of Pericarpium Citri Reticulatae glycosides is the highest in the method five, and each test item is all up to specification.
The specific embodiment
The following embodiment of the present invention all can reach the effect of above-mentioned experimental example.
Embodiment 1: a kind of gold fruit of the present invention drinks oral liquor
[prescription]: Radix Rehmanniae 73g Radix Scrophulariae 55g FRUCTUS TERMINALIAE IMMATURUS 18g
Periostracum Cicadae 27g 55g Radix Ophiopogonis Semen Sterculiae Lychnophorae 18g
Radix Adenophorae 55g Radix Pseudostellariae 55g Pericarpium Citri Reticulatae 36g
Oleum menthae 0.5ml sucrose 200g citric acid 1g
Sodium benzoate 2g
Above-mentioned raw materials is mixed with oral liquid 1000ml as follows;
[preparation method]:
1, the Radix Rehmanniae, Radix Scrophulariae add 8 times of water gagings decoctions three times, and each 2 hours, merging filtrate filtered; All the other medical materials (except Pericarpium Citri Reticulatae) add 8 times of water gagings and decoct 2 times, each 30 minutes, filter, filtrate and the Radix Rehmanniae, Radix Scrophulariae medicinal liquid merge, be concentrated into relative density 1.15 (60 ℃ of surveys), clear paste adds 7 times of amounts and reclaims ethanol (from minuent to height), makes to contain the alcohol amount and reach 60%, left standstill 72 hours, get the supernatant decompression recycling ethanol to there not being the alcohol flavor, reconcentration is received cream to relative density 1.30 (80 ℃ of surveys), cross 200 order filter clothes, it is standby to receive cream.
2, get the Pericarpium Citri Reticulatae medical material, add 60% alcoholic solution reflux, extract, three times, each 1.5h, add for the first time 8 times of amount 60% ethanol, 60% ethanol of 6 times of amount preparations of second and third time usefulness, concentrating under reduced pressure reclaims ethanol to there not being the alcohol flavor, and clear paste adds 20%NaOH solution and transfers PH to 12.0 all to dissolve to Hesperidin, and clear paste is standby.
3, merging 1,2 clear paste are put and are boiled 10-15 minute (pressure 0.2MPa), add 7 times of water gagings and sodium benzoate (using earlier water dissolution), precipitate 48 hours, get supernatant liquid filtering.
4, filtrate adds sucrose 200g, and boiling sterilization 30 minutes is put coldly, and adjusting total amount with purified water is 1000ml, puts coldly, adds Oleum menthae (use earlier dissolve with ethanol), stirs, and with the filtration of rustless steel sheet frame, fill, sterilization, packing, that is, 15ml/ props up.
Embodiment 2: a kind of gold fruit of the present invention drinks oral liquor
[prescription]: Radix Rehmanniae 73g Radix Scrophulariae 55g FRUCTUS TERMINALIAE IMMATURUS 18g
Periostracum Cicadae 27g 55g Radix Ophiopogonis Semen Sterculiae Lychnophorae 18g
Radix Adenophorae 55g Radix Pseudostellariae 55g Pericarpium Citri Reticulatae 36g
Oleum menthae 0.5ml sucrose 200g citric acid 1g
Sodium benzoate 2g
Above-mentioned raw materials is mixed with oral liquid 1000ml as follows;
[preparation method]:
1, the Radix Rehmanniae, Radix Scrophulariae add 8 times of water gagings decoctions three times, and each 2 hours, merging filtrate filtered; All the other medical materials add 8 times of water gagings and decoct 2 times, each 30 minutes, filter, filtrate and the Radix Rehmanniae, Radix Scrophulariae medicinal liquid merge, be concentrated into relative density 1.15 (60 ℃ of surveys), clear paste adds 7 times of amounts and reclaims ethanol (from minuent to height), makes to contain the alcohol amount and reach 60%, left standstill 72 hours, get the supernatant decompression recycling ethanol to there not being the alcohol flavor, reconcentration is received cream to relative density 1.30 (80 ℃ of surveys), cross 200 order filter clothes, clear paste is standby.
2, get the Pericarpium Citri Reticulatae medical material, add 60% alcoholic solution percolation, left standstill 24 hours, with the speed of 3ml/kg/min percolation slowly, collect percolate heating evaporation ethanol, concentrating under reduced pressure reclaims ethanol to there not being the alcohol flavor, clear paste adds 20%NaOH solution and transfers PH to 12.0 all to dissolve to Hesperidin, and clear paste is standby.
3, merging 1,2 clear paste are put and are boiled 10-15 minute (pressure 0.2MPa), add 7 times of water gagings and sodium benzoate (using earlier water dissolution), precipitate 48 hours, get supernatant liquid filtering.
4, filtrate adds sucrose 200g, boiling sterilization 30 minutes; Put coldly, adjusting total amount with purified water is 1000ml, puts coldly, adds Oleum menthae (use earlier dissolve with ethanol), stirs, and with the filtration of rustless steel sheet frame, fill, sterilization, packing, that is, 15ml/ props up.
Embodiment 3: a kind of gold fruit of the present invention drinks oral liquor
[prescription]: Radix Rehmanniae 73g Radix Scrophulariae 55g FRUCTUS TERMINALIAE IMMATURUS 18g
Periostracum Cicadae 27g 55g Radix Ophiopogonis Semen Sterculiae Lychnophorae 18g
Radix Adenophorae 55g Radix Pseudostellariae 55g Pericarpium Citri Reticulatae 36g
Oleum menthae 1ml steviosin 1g sodium benzoate 2g
Above-mentioned raw materials is mixed with oral liquid 1000ml as follows;
[preparation method]:
1, the Radix Rehmanniae, Radix Scrophulariae add 8 times of water gagings decoctions three times, and each 2 hours, merging filtrate filtered; All the other medical materials (except Pericarpium Citri Reticulatae) add 8 times of water gagings and decoct 2 times, each 30 minutes, filter, filtrate and the Radix Rehmanniae, Radix Scrophulariae medicinal liquid merge, be concentrated into relative density 1.15 (60 ℃ of surveys), clear paste adds 7 times of amounts and reclaims ethanol (from minuent to height), makes to contain the alcohol amount and reach 60%, left standstill 72 hours, get the supernatant decompression recycling ethanol to there not being the alcohol flavor, reconcentration is received cream to relative density 1.30 (80 ℃ of surveys), cross 200 order filter clothes, it is standby to receive cream.
2, get the Pericarpium Citri Reticulatae medical material, add 60% alcoholic solution reflux, extract, three times, each 1.5h, add for the first time 8 times of amount 60% ethanol, 60% ethanol of 6 times of amount preparations of second and third time usefulness, concentrating under reduced pressure reclaims ethanol to there not being the alcohol flavor, and clear paste adds 20%NaOH solution and transfers PH to 12.0 all to dissolve to Hesperidin, and clear paste is standby.
3, merging 1,2 clear paste are put and are boiled 10-15 minute (pressure 0.2MPa), add 7 times of water gagings and sodium benzoate (using earlier water dissolution), precipitate 48 hours, get supernatant liquid filtering.
4, filtrate adds sucrose 200g, and boiling sterilization 30 minutes is put coldly, and adjusting total amount with purified water is 1000ml, puts coldly, adds Oleum menthae (use earlier dissolve with ethanol), stirs, and with the filtration of rustless steel sheet frame, fill, sterilization, packing, that is, 15ml/ props up.
Embodiment 4: a kind of gold fruit of the present invention drinks oral liquor
[prescription]: Radix Rehmanniae 73g Radix Scrophulariae 55g FRUCTUS TERMINALIAE IMMATURUS 18g
Periostracum Cicadae 27g 55g Radix Ophiopogonis Semen Sterculiae Lychnophorae 18g
Radix Adenophorae 55g Radix Pseudostellariae 55g Pericarpium Citri Reticulatae 36g
Oleum menthae 1ml steviosin 1g sodium benzoate 2g
Above-mentioned raw materials is mixed with oral liquid 1000ml as follows;
[preparation method]:
1, the Radix Rehmanniae, Radix Scrophulariae add 8 times of water gagings decoctions three times, and each 2 hours, merging filtrate filtered; All the other medical materials add 8 times of water gagings and decoct 2 times, each 30 minutes, filter, filtrate and the Radix Rehmanniae, Radix Scrophulariae medicinal liquid merge, be concentrated into relative density 1.15 (60 ℃ of surveys), clear paste adds 7 times of amounts and reclaims ethanol (from minuent to height), makes to contain the alcohol amount and reach 60%, left standstill 72 hours, get the supernatant decompression recycling ethanol to there not being the alcohol flavor, reconcentration is received cream to relative density 1.30 (80 ℃ of surveys), cross 200 order filter clothes, clear paste is standby.
2, get the Pericarpium Citri Reticulatae medical material, add 80% alcoholic solution percolation, left standstill 24 hours, with the speed of 3ml/kg/min percolation slowly, collect percolate heating evaporation ethanol, concentrating under reduced pressure reclaims ethanol to there not being the alcohol flavor, clear paste adds 20%NaOH solution and transfers PH to 12.0 all to dissolve to Hesperidin, and clear paste is standby.
3, merging 1,2 clear paste are put and are boiled 10-15 minute (pressure 0.2MPa), add 7 times of water gagings and sodium benzoate (using earlier water dissolution), precipitate 48 hours, get supernatant liquid filtering.
4, filtrate adds steviosin 1g, boiling sterilization 30 minutes; Put coldly, adjusting total amount with purified water is 1000ml, puts coldly, adds Oleum menthae (use earlier dissolve with ethanol), stirs, and with the filtration of rustless steel sheet frame, fill, sterilization, packing, that is, 15ml/ props up.