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CN106579331A - Low-bitterness L-menthol, preparation method and application - Google Patents

Low-bitterness L-menthol, preparation method and application Download PDF

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Publication number
CN106579331A
CN106579331A CN201611182333.6A CN201611182333A CN106579331A CN 106579331 A CN106579331 A CN 106579331A CN 201611182333 A CN201611182333 A CN 201611182333A CN 106579331 A CN106579331 A CN 106579331A
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CN
China
Prior art keywords
bitterness
menthol
low
levorotatory menthol
preparation
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201611182333.6A
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Chinese (zh)
Inventor
刘锐锋
郑俊峰
文汉
李敏
张雪梅
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Anhui Ever-Developing Perfume And Chemical Co Ltd
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Anhui Ever-Developing Perfume And Chemical Co Ltd
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Priority to CN201611182333.6A priority Critical patent/CN106579331A/en
Publication of CN106579331A publication Critical patent/CN106579331A/en
Pending legal-status Critical Current

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  • Cosmetics (AREA)

Abstract

The invention discloses low-bitterness L-menthol, a preparation method and application. The preparation method comprises the following steps: adding L-menthol crystals into an ethanol solution to be dissolved, adding fumed silica and activated carbon powder at the same time, and carrying out ultrasonic oscillation, so as to obtain a mixed solution A; carrying out refrigerated centrifugation on the mixed solution A, taking filtrate at the upper layer, and carrying out reduced pressure distillation for removing low-boiling-point substances, so as to obtain a fraction B; adding a sweetening agent into a propylene glycol solution to be dissolved, so as to obtain a mixed solution C; and adding the mixed solution C into the fraction B, heating and uniformly stirring, carrying out gradient cooling, and crystallizing to obtain the low-bitterness L-menthol. The preparation method disclosed by the invention has the advantages that the fumed silica and activated carbon powder are used for treating L-menthol, a compound sweetening agent is used as a bitterness masking agent, gradient cooling and crystallization are carried out for preparing the low-bitterness L-menthol crystals, and the purity of the L-menthol is also improved to some extent; and the low-bitterness L-menthol can obviously reduce the bitterness of the L-menthol crystals when entering the mouth and can be used for replacing a synthetic cooling agent in food and candy.

Description

A kind of low bitterness levorotatory menthol, preparation method and application
Technical field
The present invention relates to a kind of method for reducing levorotatory menthol bitterness, more particularly to a kind of left-handed Herba Menthae of low bitterness Alcohol, preparation method and application.
Background technology
Levorotatory menthol is the white needle-like crystals extracted in leaf and stem by lips and teeth section plant Herba Menthae, with Herba Menthae Characteristic perfume and fragrance, are modal natural coolant agents.
Levorotatory menthol selectively to the temperature sensor generation effect of human body, and can be given people cool by cold sensor Feel, but while can also stimulate the sensation and burning sensation of the taste bud generation bitterness of people.Therefore, in the use process of end product In, the consumption of levorotatory menthol is greatly limited.And thus caused a series of contradiction:In levorotatory menthol consumption Bitterness is had when big, and consumption hour is then without obvious cool feeling.For these defects of levorotatory menthol, many synthesis coolant agent quilts Develop, at present WS-23, WS-3, menthyl lactate etc. are had by the synthesis coolant agent of successful commercialization, but these coolant agents Prevailing price is higher, and for consumers, natural coolant agent has higher traction.Therefore, with the cool taste of synthesis Agent is compared, and the levorotatory menthol of low bitterness has bigger market value and the higher market competitiveness.
Want to remove or reduce the bitterness in levorotatory menthol, it is necessary to first understand the mechanism that bitterness is produced.Bitterness is by containing The liquid for having chemical substance stimulates the sensation for causing, its formation mechenism to be distributed across the hardship in taste bud on the microvilluss of taste corpuscle top Taste receptors albumen is combined postactivated with dissolving amaroid in the liquid phase, through intracellular signal transduction, removes gustatory cell film Polarization, causes neurocyte postsynaptic excitation, excitatory signal to enter oblongata along nervus facialiss, nervus glossopharyngeus or vagus nerve then Nucleus solitariuss, change neuron to thalamus, the taste centre of brain postcentral gyruss foot are finally projected, through neural Integrate the final bitterness that produces to perceive.In short, bitterness is external factor produces stimulation to taste bud, and project the one of brain generation Plant and feel.
The bitterness of levorotatory menthol derives from two aspects, is on the one hand, because it generates stimulation to taste bud, and to allow people The sensation of " hardship " is generated, this sensation cannot be eliminated, on the other hand, the bitterness of levorotatory menthol is by its own impurity content Affect.Levorotatory menthol is extracted by Oleum menthae crystallization, except containing also having menthone, different Herba Menthae in addition to levorotatory menthol in Oleum menthae About 50 kinds of other compositions such as ketone, acetic acid peppermint ester, limonenes, limonene, pinene, cineole, wherein most of materials without cool feeling or Cool feeling degree is far below levorotatory menthol, but equally has bitterness.At present, active substance content is most in commercially available levorotatory menthol 99% or so.
The content of the invention
It is an object of the invention to overcome the deficiencies in the prior art, there is provided a kind of low bitterness levorotatory menthol, preparation side Method and application, can effectively reduce the bitterness of levorotatory menthol.
The present invention is achieved by the following technical solutions, and the present invention is comprised the following steps:
(1) levorotatory menthol crystal is added to into solution in ethanol solution, while adding aerosil and activated carbon Powder, obtains mixed solution A after ultrasonic vibration;
(2) by mixed solution A frozen centrifugation, take upper strata filtrate decompression distillation and remove low-boiling point material, obtain fraction B;
(3) sweeting agent is added in propylene glycol solution and is dissolved, obtain mixed solution C;
(4) mixed solution C is added in fraction B, heated and stirred is uniform, gradient cooling crystallization obtains the left-handed of low bitterness Menthol.
In the step (1), aerosil is 1 with the mass ratio of activated carbon powder:10~1:30, activated carbon powder is gentle The quality sum of aerosil is 1 with the mass ratio of levorotatory menthol crystal:20~1:30, levorotatory menthol crystal and ethanol The mass ratio of solution is 1:1~1:3.
In the step (1), the frequency of ultrasonic vibration is 10~20KHz, and ultrasonic time is 1~5h, and temperature is 30~50 ℃。
In the step (2), the rotating speed of frozen centrifugation is 10000~15000rpm, and centrifuging temperature is -10~0 DEG C.
In the step (2), the pressure of vacuum distillation is -0.09~-0.1Mpa, and temperature is 40~60 DEG C, removes low boiling Gained fraction B is the liquid levorotatory menthol after purification after point material ethanol.
In the step (3), it is 1 that sweeting agent is sucralose, saccharin sodium, Sorbitol in mass ratio:(1~5):(1~ 3) mix.
In the step (3), by mass, the total addition level of sweeting agent is 2~8% in the propylene glycol solution.
In the step (4), mixed solution C is 1 with the mass ratio of fraction B:4~1:7, heating-up temperature is 40~65 DEG C, Gradient cooling speed is 0.1~0.5 DEG C/h.
Low bitterness levorotatory menthol obtained in a kind of preparation method using the low bitterness levorotatory menthol.
A kind of application of low bitterness levorotatory menthol in coolant agent.
The present invention has compared to existing technology advantages below:The present invention is using aerosil and activated carbon powder to left-handed Menthol is processed, can adsorbing contaminant, purified crystals, while using compound sweetener as bitterness screening agent, gradient drop Temperature crystallization prepares low bitterness levorotatory menthol crystal, and the purity of levorotatory menthol also increases.With traditional Herba Menthae alcohol crystals phase Than, bitterness during levorotatory menthol crystal entrance can be significantly reduced, synthesis coolant agent can be substituted in food, confection and is used.
Specific embodiment
Embodiments of the invention are elaborated below, the present embodiment is carried out under premised on technical solution of the present invention Implement, give detailed embodiment and specific operating process, but protection scope of the present invention is not limited to following enforcements Example.
Embodiment 1
The present embodiment is comprised the following steps:
(1) levorotatory menthol crystal is added in ethanol solution and is dissolved, in mass ratio 1:10 by aerosil, work Property powdered carbon mixed powder mixing, then by mixed powder and levorotatory menthol crystal with mass ratio 1:20 configurations, levorotatory menthol crystal It is 1 with the mass ratio of ethanol solution:1, processed using numerical control supersonic concussion instrument, supersonic frequency 10KHz, ultrasonic time is 1h, Temperature is 30 DEG C, obtains mixed solution A;
(2) by mixed solution A frozen centrifugation, using Beckman refrigerated centrifuger, centrifuge speed is 10000rpm, centrifugation Temperature is -10 DEG C.Upper strata filtrate is taken in -0.09Mpa, vacuum distillation under the conditions of 40 DEG C removes ethanol, obtains fraction B;
(3) sucralose, saccharin sodium, Sorbitol are pressed into 1:1:1 ratio is mixed to get sweeting agent, and uses Propylene Glycol Solution dissolves, wherein the total addition level of sweeting agent is 2% after mixing, obtains mixed solution C;
(4) by mixed solution C with mass ratio as 1:4 ratio is added in fraction B, and 40 DEG C of heated and stirred are uniform, by 0.1 DEG C/crystallization of h gradient coolings obtains final product the levorotatory menthol of low bitterness.
Embodiment 2
(1) levorotatory menthol crystal is added in ethanol solution and is dissolved, in mass ratio 1:20 by aerosil, work Property powdered carbon mixed powder mixing, then by mixed powder and levorotatory menthol crystal with mass ratio 1:25 configurations, levorotatory menthol crystal It is 1 with the mass ratio of ethanol solution:2, processed using numerical control supersonic concussion instrument, supersonic frequency 15KHz, ultrasonic time is 4h, Temperature is 40 DEG C, obtains mixed solution A;
(2) by mixed solution A frozen centrifugation, using Beckman refrigerated centrifuger, centrifuge speed is 12000rpm, centrifugation Temperature is -5 DEG C.Upper strata filtrate is taken in -0.1Mpa, vacuum distillation under the conditions of 50 DEG C removes ethanol, obtains fraction B;
(3) sucralose, saccharin sodium, Sorbitol are pressed into 1:3:2 ratio is mixed to get sweeting agent, and uses Propylene Glycol Solution dissolves, wherein the total addition level of sweeting agent is 5% after mixing, obtains mixed solution C;
(4) by mixed solution C with mass ratio as 1:5 ratio is added in fraction B, and 50 DEG C of heated and stirred are uniform, by 0.3 DEG C/crystallization of h gradient coolings obtains final product the levorotatory menthol of low bitterness.
Embodiment 3
(1) levorotatory menthol crystal is added in ethanol solution and is dissolved, in mass ratio 1:30 by aerosil, work Property powdered carbon mixed powder mixing, then by mixed powder and levorotatory menthol crystal with mass ratio 1:30 configurations, levorotatory menthol crystal It is 1 with the mass ratio of ethanol solution:3, processed using numerical control supersonic concussion instrument, supersonic frequency 20KHz, ultrasonic time is 5h, Temperature is 50 DEG C, obtains mixed solution A;
(2) by mixed solution A frozen centrifugation, using Beckman refrigerated centrifuger, centrifuge speed is 15000rpm, centrifugation Temperature is 0 DEG C.Upper strata filtrate is taken in -0.1Mpa, vacuum distillation under the conditions of 60 DEG C removes ethanol, obtains fraction B;
(3) sucralose, saccharin sodium, Sorbitol are pressed into 1:5:3 ratio is mixed to get sweeting agent, and uses Propylene Glycol Solution dissolves, wherein the total addition level of sweeting agent is 8% after mixing, obtains mixed solution C;
(4) by mixed solution C with mass ratio as 1:7 ratio is added in fraction B, and 65 DEG C of heated and stirred are uniform, by 0.5 DEG C/crystallization of h gradient coolings obtains final product the levorotatory menthol of low bitterness.
The low bitterness levorotatory menthol that embodiment 1~3 is prepared as coolant agent, in being added on food.
Test by 10 people are selected.Undressed levorotatory menthol (original group), and each enforcement of the invention are attempted respectively Low bitterness levorotatory menthol after example process.Each group is dissolved using Propylene Glycol and Tween 80, quality is then diluted with water to dense Degree 0.01%, 0.02%, 0.05% and 0.1%, provides bitterness judgement.
The bitter sensing test result of 1 four groups of crowds of table
0.01% 0.02% 0.05% 0.1%
Original group There is bitter sense Hardship sense is better than cool feeling Hardship sense is better than cool feeling Hardship sense is strong
Embodiment 1 It is basic to feel without bitter Cool feeling is better than sweet sense Slightly bitter sense Slightly bitter sense
Embodiment 2 It is basic to feel without bitter Cool feeling is better than sweet sense Slightly bitter sense Slightly bitter sense
Embodiment 3 It is basic to feel without bitter Cool feeling is most strong Slightly bitter sense Slightly bitter sense
From upper table 1, the cool feeling of the low bitterness levorotatory menthol after process is higher, and hardship sense is low, can be effectively as Coolant agent is added in food and does not change the characteristic of food.
Presently preferred embodiments of the present invention is the foregoing is only, not to limit the present invention, all essences in the present invention Any modification, equivalent and improvement made within god and principle etc., should be included within the scope of the present invention.

Claims (10)

1. a kind of preparation method of low bitterness levorotatory menthol, it is characterised in that comprise the following steps:
(1) levorotatory menthol crystal is added to into solution in ethanol solution, while adding aerosil and activated carbon powder, is surpassed Acoustic shock obtains mixed solution A after swinging;
(2) by mixed solution A frozen centrifugation, take upper strata filtrate decompression distillation and remove low-boiling point material, obtain fraction B;
(3) sweeting agent is added in propylene glycol solution and is dissolved, obtain mixed solution C;
(4) mixed solution C is added in fraction B, heated and stirred is uniform, gradient cooling crystallization obtains the left-handed Herba Menthae of low bitterness Alcohol.
2. a kind of preparation method of low bitterness levorotatory menthol according to claim 1, it is characterised in that the step (1) in, aerosil is 1 with the mass ratio of activated carbon powder:10~1:30, the quality of activated carbon powder and aerosil Sum is 1 with the mass ratio of levorotatory menthol crystal:20~1:30, levorotatory menthol crystal is 1 with the mass ratio of ethanol solution: 1~1:3.
3. a kind of preparation method of low bitterness levorotatory menthol according to claim 1, it is characterised in that the step (1) in, the frequency of ultrasonic vibration is 10~20KHz, and ultrasonic time is 1~5h, and temperature is 30~50 DEG C.
4. a kind of preparation method of low bitterness levorotatory menthol according to claim 1, it is characterised in that the step (2) in, the rotating speed of frozen centrifugation is 10000~15000rpm, and centrifuging temperature is -10~0 DEG C.
5. a kind of preparation method of low bitterness levorotatory menthol according to claim 1, it is characterised in that the step (2) in, the pressure of vacuum distillation is -0.09~-0.1Mpa, and temperature is 40~60 DEG C, removes gained after low-boiling point material ethanol Fraction B is the liquid levorotatory menthol after purification.
6. a kind of preparation method of low bitterness levorotatory menthol according to claim 1, it is characterised in that the step (3) in, it is 1 that sweeting agent is sucralose, saccharin sodium, Sorbitol in mass ratio:(1~5):(1~3) mixes.
7. a kind of preparation method of low bitterness levorotatory menthol according to claim 1, it is characterised in that the step (3) in, by mass, the total addition level of sweeting agent is 2~8% in the propylene glycol solution.
8. a kind of preparation method of low bitterness levorotatory menthol according to claim 1, it is characterised in that the step (4) in, mixed solution C is 1 with the mass ratio of fraction B:4~1:7, heating-up temperature is 40~65 DEG C, and gradient cooling speed is 0.1 ~0.5 DEG C/h.
9. a kind of using low bitterness obtained in the preparation method of low bitterness levorotatory menthol as described in any one of claim 1~8 Levorotatory menthol.
10. a kind of application of the low bitterness levorotatory menthol in coolant agent as claimed in claim 9.
CN201611182333.6A 2016-12-20 2016-12-20 Low-bitterness L-menthol, preparation method and application Pending CN106579331A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107950983A (en) * 2017-11-27 2018-04-24 昆山亚香香料股份有限公司 A kind of compounding coolant agent composition based on menthol and preparation method thereof
CN113244854A (en) * 2021-06-10 2021-08-13 黄山友谊南海新材料有限公司 High-purity TGIC system of processing
CN113367313A (en) * 2021-06-23 2021-09-10 安徽银丰药业股份有限公司 Low-bitter levo-menthol and preparation method thereof

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101919960A (en) * 2010-08-30 2010-12-22 海南新中正制药有限公司 Inflammation and heat clearing tablets and preparation method thereof
CN105339333A (en) * 2013-06-18 2016-02-17 日本烟草产业株式会社 Purified natural (L)-menthol, its production method and evaluation method

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101919960A (en) * 2010-08-30 2010-12-22 海南新中正制药有限公司 Inflammation and heat clearing tablets and preparation method thereof
CN105339333A (en) * 2013-06-18 2016-02-17 日本烟草产业株式会社 Purified natural (L)-menthol, its production method and evaluation method

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107950983A (en) * 2017-11-27 2018-04-24 昆山亚香香料股份有限公司 A kind of compounding coolant agent composition based on menthol and preparation method thereof
CN113244854A (en) * 2021-06-10 2021-08-13 黄山友谊南海新材料有限公司 High-purity TGIC system of processing
CN113367313A (en) * 2021-06-23 2021-09-10 安徽银丰药业股份有限公司 Low-bitter levo-menthol and preparation method thereof

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