CN105713732A - Extraction method of star anise oil - Google Patents
Extraction method of star anise oil Download PDFInfo
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- CN105713732A CN105713732A CN201610285530.4A CN201610285530A CN105713732A CN 105713732 A CN105713732 A CN 105713732A CN 201610285530 A CN201610285530 A CN 201610285530A CN 105713732 A CN105713732 A CN 105713732A
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- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11B—PRODUCING, e.g. BY PRESSING RAW MATERIALS OR BY EXTRACTION FROM WASTE MATERIALS, REFINING OR PRESERVING FATS, FATTY SUBSTANCES, e.g. LANOLIN, FATTY OILS OR WAXES; ESSENTIAL OILS; PERFUMES
- C11B9/00—Essential oils; Perfumes
- C11B9/02—Recovery or refining of essential oils from raw materials
- C11B9/027—Recovery of volatiles by distillation or stripping
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- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11B—PRODUCING, e.g. BY PRESSING RAW MATERIALS OR BY EXTRACTION FROM WASTE MATERIALS, REFINING OR PRESERVING FATS, FATTY SUBSTANCES, e.g. LANOLIN, FATTY OILS OR WAXES; ESSENTIAL OILS; PERFUMES
- C11B9/00—Essential oils; Perfumes
- C11B9/02—Recovery or refining of essential oils from raw materials
- C11B9/025—Recovery by solvent extraction
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- Organic Chemistry (AREA)
- Fats And Perfumes (AREA)
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Abstract
The invention provides an extraction method of star anise oil. In the invention, a steam distillation method is adopted before an ethanol extraction method; through the method, residual anise oil in the star anise after steam distillation is extracted by the ethanol extraction method to realize secondary extraction and utilization of active ingredients of star anise; and meanwhile, impurities in the star anise can be effectively removed by steam distillation, so that the purity of the anise oil obtained by ethanol extraction in the later period is increased, and the inherent defects of organic solvent extraction are overcome. The method can remarkably increase the yield of star anise oil and obtain anise oil with relatively good quality; and meanwhile, the method is low in cost, convenient to implement and suitable for industrial large-scale production.
Description
Technical field
The invention belongs to technical field of natural product extraction, particularly relate to the extracting method of a kind of Oleum Anisi Stellati.
Background technology
Recording in Compendium of Material Medica, anise be the dry mature fruit of Magnoliacea plant anise, having dispels the wind regulates the flow of vital energy, in stomach function regulating tune, effect of warming YANG to expel cold, regulating QI to relieve pain, the traditional Chinese medical science is usually used in gastrofrigid vomiting, lumbago due to renal deficiency and colic of cold type stomachache etc..Can extracting from its dry fruit and branch and leaf and obtain Oleum Anisi Stellati, in Oleum Anisi Stellati, most important effective ingredient is trans-anethole, also known as anethole, molecular formula C10H12O, for water white transparency or weak yellow liquid, in Fructus Foeniculi sample fragrance and sweet taste, it is widely used to the food production manufacture fields such as confection, beverage, drinks essence, and scientific investigations showed that it also has spectrum antibacterial activity, and can effectively remove DPPH-free radical, also there is the medical values such as promotion enterogastric peristalsis, the cough that alleviation tracheitis causes simultaneously.
At present, having a lot to the extracting method of Oleum Anisi Stellati, traditional extraction process has steam distillation, Simultaneous distillation, organic solvent extractionprocess etc., and the new methods of development in recent years then has microwave extraction method, supercritical CO2Extraction etc..But in general, steam distillation, because its good stability, extraction cost are cheap, simple and convenient extraction, remain currently used most commonly used extracting method, but the method yield is relatively low；Simultaneous distillation is the volatile oil is drawn new technique grown up in the sixties in 20th century, its outstanding feature is the steam distillation of sample and two steps of solvent extraction of fraction to be united two into one, extraction step is few, but the method needs to design special equipment special, baroque；Although and organic solvent extractionprocess can improve the productivity of Oleum Anisi Stellati to a certain extent, but extract obtained impurity is more, it is not easy to separate purification.Microwave extraction method emerging in recent years and supercritical CO2Extract rule equipment requirements is high, although improve yield and the purity of Oleum Anisi Stellati to a certain extent, but apparatus expensive, it is not appropriate for large scale industry and produces.Therefore how finding a kind of with low cost, enforcement convenience, the extraction process with higher Oleum Anisi Stellati yield and purity becomes a pendulum difficult problem in face of vast researcher.There is this process synthesis simultaneously and compare various extracting method, and technological process has been done a degree of improvement and combination, after adopting first steam distillation, the technique of ethanolic extraction method is operated, and explore optimum process condition, although 95% ethanol price is of a relatively high, but ethanol can reclaim and recycled herein, the composition of production can't be increased, therefore it is that one is namely convenient to implement, extraction efficiency can be significantly improved again, and the technique of various active component in anise can be made full use of.
Summary of the invention
Not enough for above-mentioned prior art, the present invention provides a kind of method that vapor distillation and organic solvent extraction are used in combination to extract Oleum Anisi Stellati.This method is remarkably improved Oleum Anisi Stellati yield, and obtains the good Oleum Anisi Stellati of quality, and this extracting method is with low cost simultaneously, it is convenient to implement, and is suitable for industrial-scale production.
To achieve these goals, the present invention adopts the following technical scheme that
The extracting method of a kind of Oleum Anisi Stellati, comprises the following steps:
(1) anise baking is dried to water content at 2%-7%, then smashes into the powder of 60-70 order；
(2) add water mixing by step (1) gained anise powder, is added water and the mass ratio of anistree powder is 8-12:1；
(3) adopting steam distillation that step (2) gained anise powder water mixed liquid is distilled, vapo(u)rizing temperature is 80-120 DEG C, when distillation time is 2-5, removes the impurity of distillation, collects distillation；
(4) in gained distillation in step (3), add analytical pure sodium chloride to distillation and white solid sodium chloride occurs, collect upper strata oil reservoir after promoting profit layering and obtain fennel essential oil；
(5) being collected by the anistree powder extracted through vapor distillation in step (3), after after drying, carry out soxhlet type using ethanol as solvent, extraction temperature is 60 DEG C-90 DEG C, and extraction times is 4-6 hour, obtains extract；
(6) ethanol in recycling step (5) extract obtains Fructus Foeniculi extract oil.
Preferably, anise baking is dried to water content 3%-5% by step (1).
Preferably, step (2) is added water and the mass ratio of anistree powder is 9-11:1.
Preferably, in step (3), vapo(u)rizing temperature is 90-110 DEG C, and distillation time is 3-4 hour.
Preferably, in step (5), extraction temperature is 70-80 DEG C, and extraction times is 3-5 hour.
Preferably, concentration of alcohol described in step (5) is 75%-95%.
Preferably, the extracting method of above-mentioned Oleum Anisi Stellati, comprise the following steps:
(1) anise baking is dried to water content 4%, then smashes into the powder of 60 orders；
(2) add water mixing by step (1) gained anise powder, is added water and the mass ratio of anistree powder is 10:1；
(3) adopting steam distillation that step (2) gained anise powder water mixed liquid is distilled, vapo(u)rizing temperature is 105 DEG C, and distillation time is 4 hours, removes the impurity of distillation, collects distillation；
(4) in gained distillation in step (3), add analytical pure sodium chloride to distillation and white solid sodium chloride occurs, collect upper strata oil reservoir after promoting profit layering and obtain fennel essential oil；
(5) being collected by the anistree powder extracted through vapor distillation in step (3), after after drying, carry out soxhlet type using 95% ethanol as solvent, extraction temperature is 78 DEG C, and extraction times is 4.5 hours, obtains extract；
(6) ethanol in recycling step (5) extract obtains Fructus Foeniculi extract oil.
Compared with prior art it has the great advantage that the present invention
(1) after the present invention adopts first steam distillation, the technique of ethanolic extraction method is operated, and technique is simple, convenient implements, it is not necessary to expensive device.
(2) present invention relatively traditional extraction process yield significantly improves, and the Oleum Anisi Stellati remained in after vapor distillation in anise is extracted through ethanolic extraction method, it is achieved to anistree effective ingredient second extraction and utilization；Meanwhile, vapor distillation can effectively remove the impurity in anise so that the Oleum Anisi Stellati purity that the later stage obtains through ethanolic extraction is significantly improved.
(3) present invention does not add any poisonous and harmful solvent, prevent the pollution to environment in harmful chemical residual and the course of processing, the ethanol simultaneously used in ethanolic extraction method can reclaim and recycled, economize on resources and effectively reduce production cost, being suitable to industrial mass production application.
Accompanying drawing explanation
Fig. 1 is the gas chromatogram of the star anise oil that embodiment 1 vapor distillation obtains；
Fig. 2 is the chromatography of gases figure of the Fructus Anisi Stellati extract oil that embodiment 1 soxhlet type obtains；
Fig. 3 is the gas chromatogram of the star anise oil that comparative example 1 vapor distillation obtains；
Fig. 4 is the chromatography of gases figure of the Fructus Anisi Stellati extract oil that comparative example 2 soxhlet type obtains；
Fig. 5 is the chromatography of gases figure of the Fructus Anisi Stellati extract oil that comparative example 3 soxhlet type obtains；
Fig. 6 is the gas chromatogram of the star anise oil that comparative example 3 vapor distillation obtains；
Fig. 7 is the gas chromatogram of the Oleum Anisi Stellati that comparative example 4 Simultaneous distillation obtains.
Detailed description of the invention
The present invention is further illustrated in conjunction with the embodiments, it should explanation, and its content, merely to explain the present invention, is not defined by the description below.
Embodiment 1
Take anistree fruit baking and be dried to water content 2%, size-reduced machine crosses 60 mesh sieves after pulverizing, anistree powder 100g is weighed with electronic scale, add water 1200mL, both are mixed, it is positioned in the steam receiving bottle in vapor distillation device and starts distillation, vapo(u)rizing temperature is 80 DEG C, distillation time is 5h, remove the impurity of distillation, collection slips out liquid, add analytically pure sodium chloride and white solid sodium chloride occurs to aqueous phase, profit is made to be layered, draw upper strata oil reservoir, obtain star anise oil 5.74g, it is positioned in brown bottle and saves backup, yield is 5.74%, discard the aqueous phase in steam receiving bottle in vapor distillation device, collect lower floor's residue and directly pour drying in pallet into, collect residue after drying and obtain 71g, it is positioned in the extraction tube of apparatus,Soxhlet's, add 70% ethanolic extraction to not having siphon, extracting 6h at 60 DEG C, collection slips out liquid, anistree extract oil 13g is obtained after reclaiming ethanol, it is positioned in brown bottle and saves backup, yield is 18.31%.Using chromatography of gases that star anise oil and Fructus Anisi Stellati extract oil are carried out material composition detection, testing result as shown in Figure 1 and Figure 2, containing isoesdragol 82.7% in quintessence oil, contains isoesdragol 31.2% in extract oil.
Embodiment 2
Take anistree fruit baking and be dried to water content 5%, size-reduced machine crosses 60 mesh sieves after pulverizing, anistree powder 200g is weighed with electronic scale, add water 2200mL, both are mixed, it is positioned in the steam receiving bottle in vapor distillation device and starts distillation, vapo(u)rizing temperature is 90 DEG C, distillation time is 3h, remove the impurity of distillation, collection slips out liquid, add analytically pure sodium chloride and white solid sodium chloride occurs to aqueous phase, profit is made to be layered, draw upper strata oil reservoir, obtain star anise oil 11.62g, it is positioned in brown bottle and saves backup, yield is 5.81%, discard the aqueous phase in steam receiving bottle in vapor distillation device, collect lower floor's residue and directly pour drying in pallet into, collect residue after drying and obtain 141g, it is positioned in the extraction tube of apparatus,Soxhlet's, add 80% ethanolic extraction to not having siphon, extracting 5h at 70 DEG C, collection slips out liquid, anistree extract oil 26.4g is obtained after reclaiming ethanol, it is positioned in brown bottle and saves backup, yield is 18.72%.By star anise oil and Fructus Anisi Stellati extract oil gas chromatographic detection material composition, it is known that containing isoesdragol 81.3% in quintessence oil, containing isoesdragol 30.7% in extract oil.
Embodiment 3
Take anistree fruit baking and be dried to water content 4%, size-reduced machine crosses 60 mesh sieves after pulverizing, anistree powder 150g is weighed with electronic scale, add water 1500mL, both are mixed, it is positioned in the steam receiving bottle in vapor distillation device and starts distillation, vapo(u)rizing temperature is 105 DEG C, distillation time is 4h, remove the impurity of distillation, collection slips out liquid, add analytically pure sodium chloride and white solid sodium chloride occurs to aqueous phase, profit is made to be layered, draw upper strata oil reservoir, obtain star anise oil 8.83g, it is positioned in brown bottle and saves backup, yield is 5.89%, discard the aqueous phase in steam receiving bottle in vapor distillation device, collect lower floor's residue and directly pour drying in pallet into, collect residue after drying and obtain 108g, it is positioned in the extraction tube of apparatus,Soxhlet's, add 95% ethanolic extraction to not having siphon, extracting 4.5h at 78 DEG C, collection slips out liquid, anistree extract oil 20.48g is obtained after reclaiming ethanol, it is positioned in brown bottle and saves backup, yield is 18.96%.By star anise oil and Fructus Anisi Stellati extract oil gas chromatographic detection material composition, it is known that containing isoesdragol 82.9% in quintessence oil, containing isoesdragol 30.6% in extract oil.
Embodiment 4
Take anistree fruit baking and be dried to water content 3%, size-reduced machine crosses 70 mesh sieves after pulverizing, anistree powder 100g is weighed with electronic scale, add water 900mL, both are mixed, it is positioned in the steam receiving bottle in vapor distillation device and starts distillation, vapo(u)rizing temperature is 120 DEG C, distillation time is 2h, remove the impurity of distillation, collection slips out liquid, add analytically pure sodium chloride and white solid sodium chloride occurs to aqueous phase, profit is made to be layered, draw upper strata oil reservoir, obtain star anise oil 5.92g, it is positioned in brown bottle and saves backup, yield is 5.92%, discard the aqueous phase in steam receiving bottle in vapor distillation device, collect lower floor's residue and directly pour drying in pallet into, collect residue after drying and obtain 72g, it is positioned in the extraction tube of apparatus,Soxhlet's, add 75% ethanolic extraction to not having siphon, extracting 5h at 80 DEG C, collection slips out liquid, anistree extract oil 13.62g is obtained after reclaiming ethanol, it is positioned in brown bottle and saves backup, yield is 18.92%.By star anise oil and Fructus Anisi Stellati extract oil gas chromatographic detection material composition, it is known that containing isoesdragol 82.9% in quintessence oil, containing isoesdragol 30.9% in extract oil.
Embodiment 5
Take anistree fruit baking and be dried to water content 7%, size-reduced machine crosses 70 mesh sieves after pulverizing, anistree powder 200g is weighed with electronic scale, add water 1600mL, both are mixed, it is positioned in the steam receiving bottle in vapor distillation device and starts distillation, vapo(u)rizing temperature is 100 DEG C, distillation time is 3.5h, remove the impurity of distillation, collection slips out liquid, add analytically pure sodium chloride and white solid sodium chloride occurs to aqueous phase, profit is made to be layered, draw upper strata oil reservoir, obtain star anise oil 11.52g, it is positioned in brown bottle and saves backup, yield is 5.76%, discard the aqueous phase in steam receiving bottle in vapor distillation device, collect lower floor's residue and directly pour drying in pallet into, collect residue after drying and obtain 143g, it is positioned in the extraction tube of apparatus,Soxhlet's, add 70% ethanolic extraction to not having siphon, extracting 4h at 90 DEG C, collection slips out liquid, anistree extract oil 26.75g is obtained after reclaiming ethanol, it is positioned in brown bottle and saves backup, yield is 18.75%.By star anise oil and Fructus Anisi Stellati extract oil gas chromatographic detection material composition, it is known that containing isoesdragol 82.4% in quintessence oil, containing isoesdragol 31.3% in extract oil.
Comparative example 1
Take anistree fruit baking and be dried to water content 2%, size-reduced machine crosses 60 mesh sieves after pulverizing, anistree powder 100g is weighed with electronic scale, add water 1200mL, both are mixed, it is positioned in the steam receiving bottle in vapor distillation device and starts distillation, vapo(u)rizing temperature is 80 DEG C, distillation time is 5h, remove the impurity of distillation, collection slips out liquid, add analytically pure sodium chloride and white solid sodium chloride occurs to aqueous phase, profit is made to be layered, draw upper strata oil reservoir, obtain star anise oil 5.72g, it is positioned in brown bottle and saves backup, yield is 5.72%, star anise oil is used gas chromatographic detection material composition, testing result is as shown in Figure 3, containing isoesdragol 82.2% in quintessence oil.
But comparing with embodiment 1, comparative example 1 only uses steam distillation, then remaining in the Oleum Anisi Stellati in anise cannot be extracted, and total yield is not high.
Comparative example 2
Take anistree fruit baking and be dried to water content 2%, size-reduced machine crosses 60 mesh sieves after pulverizing, anistree powder 100g is weighed with electronic scale, it is positioned in the extraction tube of apparatus,Soxhlet's, adds 70% ethanolic extraction to not having siphon, extracting 6h at 60 DEG C, collection slips out liquid, obtaining anistree extract oil 21.5g after reclaiming ethanol, be positioned in brown bottle and save backup, yield is 21.5%.By Fructus Anisi Stellati extract oil gas chromatographic detection material composition, testing result as shown in Figure 4, contains isoesdragol 36.7% in extract oil.
Compare with embodiment 1, comparative example 2 only uses ethanol as solvent to carry out surname extraction, in its yield and extract oil, contained isoesdragol composition has and improves by a small margin, but total yield is still not as embodiment 1, and uses gas chromatographic detection analysis, and in extract oil, composition is extremely complex, there is a large amount of fubaritic material, this means that its dopant species is many, content is high, and what be highly detrimental to Oleum Anisi Stellati effective ingredient separates purification further.
Comparative example 3
Take anistree fruit baking and be dried to water content 2%, size-reduced machine crosses 60 mesh sieves after pulverizing, anistree powder 100g is weighed with electronic scale, it is positioned in the extraction tube of apparatus,Soxhlet's, adds 70% ethanolic extraction to not having siphon, extracting 6h at 60 DEG C, collection slips out liquid, obtaining anistree extract oil 22.3g after reclaiming ethanol, be positioned in brown bottle and save backup, yield is 22.3%.By Fructus Anisi Stellati extract oil gas chromatographic detection material composition, testing result is as it is shown in figure 5, contain isoesdragol 36.2% in extract oil.Collect anistree residue and directly pour drying in pallet into, collect residue after drying and obtain 59g, add water 708mL, both are mixed, it is positioned in the steam receiving bottle in vapor distillation device and starts distillation, vapo(u)rizing temperature is 80 DEG C, distillation time is 5h, remove the impurity of distillation, collection slips out liquid, add analytically pure sodium chloride and white solid sodium chloride occurs to aqueous phase, profit is made to be layered, draw upper strata oil reservoir, obtain star anise oil 1.03g, it is positioned in brown bottle and saves backup, yield is 1.74%, star anise oil is used gas chromatographic detection material composition, testing result is as shown in Figure 6, containing isoesdragol 72.8% in quintessence oil.
Compare with embodiment 1, first carry out surname extraction with ethanol as solvent, carry out vapor distillation again, then later stage steam distillation Oleum Anisi Stellati yield and purity all significantly reduce, and identical with comparative example 2, owing to early stage does not carry out vapor distillation, it is many to be made directly in surname extraction then extracted volatile oil dopant species, content is high, and what be highly detrimental to Oleum Anisi Stellati effective ingredient separates purification further.
Comparative example 4
Take anistree fruit baking and be dried to water content 2%, size-reduced machine crosses 60 mesh sieves after pulverizing, and weighs anistree powder 100g with electronic scale, and add water 1200mL, one end as Simultaneous distillation-extraction instrument, at the same time the distillation extraction instrument other end adds 70% ethanol, then carry out Simultaneous distillation-extraction 10h, reclaim alcohol solvent, obtain Oleum Anisi Stellati 6.72g, Oleum Anisi Stellati is used gas chromatographic detection material composition, and testing result is as shown in Figure 7, it is known that containing isoesdragol 82.5% in Oleum Anisi Stellati
Comparing with implementing 1, Simultaneous distillation Oleum Anisi Stellati total yield is not high, and purity is also without dramatically increasing.Actually, Simultaneous distillation its essence is that sample only carries out vapor distillation always, the fraction volatilized is dissolved in extractant, specific in this comparative example, namely anise carries out vapor distillation always, Fructus Foeniculi wet goods volatile component is distilled off then evaporating into condensing tube place and is re-dissolved in ethanol to complete extraction process, and raw material is anistree own and is not directly contacted with ethanol, and it is different that this exists essence from the application.
The specific embodiment of the present invention is described although above-mentioned in conjunction with the embodiments; but not limiting the scope of the invention; one of ordinary skill in the art should be understood that; on the basis of technical scheme, those skilled in the art need not pay various amendments or deformation that creative work can make still within protection scope of the present invention.
Claims (7)
1. the extracting method of an Oleum Anisi Stellati, it is characterised in that comprise the following steps:
(1) anise baking is dried to water content at 2%-7%, then smashes into the powder of 60-70 order；
(2) add water mixing by step (1) gained anise powder, is added water and the mass ratio of anistree powder is 8-12:1；
(3) adopting steam distillation that step (2) gained anise powder water mixed liquid is distilled, vapo(u)rizing temperature is 80-120 DEG C, and distillation time is 2-5 hour, removes the impurity of distillation, collects distillation；
(4) in gained distillation in step (3), add analytical pure sodium chloride to distillation and white solid sodium chloride occurs, collect upper strata oil reservoir after promoting profit layering and obtain fennel essential oil；
(5) being collected by the anistree powder extracted through vapor distillation in step (3), after after drying, carry out soxhlet type using ethanol as solvent, extraction temperature is 60 DEG C-90 DEG C, and extraction times is 4-6 hour, obtains extract；
(6) ethanol in recycling step (5) extract obtains Fructus Foeniculi extract oil.
2. the extracting method of a kind of Oleum Anisi Stellati as claimed in claim 1, it is characterised in that in step (1), anise is bakeed and be dried to water content 3%-5%.
3. the extracting method of a kind of Oleum Anisi Stellati as claimed in claim 1, it is characterised in that added water in step (2) and the mass ratio of anistree powder is 9-11:1.
4. the extracting method of a kind of Oleum Anisi Stellati as claimed in claim 1, it is characterised in that in step (3), vapo(u)rizing temperature is 90-110 DEG C, distillation time is 3-4 hour.
5. the extracting method of a kind of Oleum Anisi Stellati as claimed in claim 1, it is characterised in that in step (5), extraction temperature is 70-80 DEG C, extraction times is 3-5 hour.
6. the extracting method of a kind of Oleum Anisi Stellati as claimed in claim 1, it is characterised in that concentration of alcohol described in step (5) is 75%-95%.
7. the extracting method of a kind of Oleum Anisi Stellati as claimed in claim 1, it is characterised in that the extracting method of above-mentioned Oleum Anisi Stellati, comprises the following steps:
(1) anise baking is dried to water content 4%, then smashes into the powder of 60 orders；
(2) add water mixing by step (1) gained anise powder, is added water and the mass ratio of anistree powder is 10:1；
(3) adopting steam distillation that step (2) gained anise powder water mixed liquid is distilled, vapo(u)rizing temperature is 105 DEG C, and distillation time is 4 hours, removes the impurity of distillation, collects distillation；
(4) in gained distillation in step (3), add analytical pure sodium chloride to distillation and white solid sodium chloride occurs, collect upper strata oil reservoir after promoting profit layering and obtain fennel essential oil；
(5) being collected by the anistree powder extracted through vapor distillation in step (3), after after drying, carry out soxhlet type using 95% ethanol as solvent, extraction temperature is 78 DEG C, and extraction times is 4.5 hours, obtains extract；
(6) ethanol in recycling step (5) extract obtains Fructus Foeniculi extract oil.
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| CN110041178A (en) * | 2019-04-25 | 2019-07-23 | 南宁市和昇香料香精有限公司 | The method of rectifying extraction isoesdragol |
| CN111449274A (en) * | 2020-04-09 | 2020-07-28 | 福建中烟工业有限责任公司 | Ginseng extract and preparation method and application thereof |
| CN111747846A (en) * | 2020-07-01 | 2020-10-09 | 长沙学院 | Comprehensive utilization method of star anise |
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| CN110041178A (en) * | 2019-04-25 | 2019-07-23 | 南宁市和昇香料香精有限公司 | The method of rectifying extraction isoesdragol |
| CN111449274A (en) * | 2020-04-09 | 2020-07-28 | 福建中烟工业有限责任公司 | Ginseng extract and preparation method and application thereof |
| CN111747846A (en) * | 2020-07-01 | 2020-10-09 | 长沙学院 | Comprehensive utilization method of star anise |
| CN113403135A (en) * | 2021-06-03 | 2021-09-17 | 贵州新农汇生态农业发展有限公司 | Comprehensive processing method of dried ginger slices and ginger oil |
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