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Method for preparing terpeneless dementholized peppermint oil through azeotropic distillation

A technology of peppermint oil and azeotropic distillation, applied in the direction of essential oil/spice, fat oil/fat refining, fat production, etc., can solve the problems of azeotropic distillation research literature and patents, etc., and achieve rich specifications and low system requirements , to avoid the effect of high energy consumption

Active Publication Date: 2014-12-03
ANHUI FENGLE PERFUME
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] Although there are many patents related to azeotropic distillation at home and abroad, and the technology is relatively mature, there are few research documents and patents related to azeotropic distillation in the peppermint industry. Therefore, the present invention attempts to carry out detailed and in-depth research in this specific field. Research

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  • Method for preparing terpeneless dementholized peppermint oil through azeotropic distillation
  • Method for preparing terpeneless dementholized peppermint oil through azeotropic distillation
  • Method for preparing terpeneless dementholized peppermint oil through azeotropic distillation

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Embodiment 1

[0021] This embodiment relates to a method for preparing terpene-free peppermint oil by azeotropic distillation, comprising the following steps:

[0022] Step (1), under 0.095MPa, pump 200kg of peppermint oil into a rectification still equipped with a stainless steel θ ring rectification column (column diameter 0.25m, height 2m), the theoretical tray of the packing is 80, add a total of Boiling agent ethylene glycol 10kg, under the condition of temperature 40°C and reflux ratio of 1:1, receive cuts in sections (the main components of each cut are shown in Table 1), and stop rectification when basically no cuts flow out;

[0023] Step (2), after the fraction is washed with water to separate the entrainer, select a suitable fraction for deployment (the fraction used to prepare the terpene-free oil is shown in Table 2), and obtain the terpene-free mint oil (the content of its main components is shown in Table 3. shown).

[0024] Table 1 Main components of azeotropic distillation...

Embodiment 2

[0031] This embodiment relates to a method for preparing terpene-free peppermint oil by azeotropic distillation, comprising the following steps:

[0032] Step (1), under 0.04MPa, pump 200kg of mint oil into a rectification still equipped with a glass packing rectification column (column diameter 0.25m, height 0.4m), the theoretical plate of the packing is 10, add Entrainer ethanol 100kg, at temperature 75 DEG C, reflux ratio is 3:1 condition, section receives cut (the main component of each cut is as shown in Table 4), when substantially no cut flows out, stop rectification;

[0033] Step (2), after the fraction is washed with water to separate the entrainer, select a suitable fraction for deployment (the fraction used to prepare the terpene-free oil is shown in Table 5), and obtain the terpene-free mint oil (the content of its main components is shown in Table 6) shown).

[0034] Table 4 Main components of azeotropic distillation fraction

[0035]

[0036] Table 5 is use...

Embodiment 3

[0041] This embodiment relates to a method for preparing terpene-free peppermint oil by azeotropic distillation, comprising the following steps:

[0042] Step (1), under 0.065MPa, 200kg of mint oil is pumped into the rectification still equipped with triangular spiral packing rectification column (column diameter 0.25m, high 4m), the theoretical plate of packing is 50, add a total of Boiling agent glycerin 50kg, propylene glycol 50kg, under the condition of temperature being 110 DEG C, reflux ratio 20:1, receiving cuts in sections (the main components of each cut are shown in Table 7), when basically no cuts flow out, stop the rectification;

[0043] Step (2), after the fraction is washed with water to separate the entrainer, select a suitable fraction for deployment (the fraction used to prepare the terpene-free oil is shown in Table 8) to obtain the terpene-free mint oil (the content of its main components is shown in Table 9) shown).

[0044] Table 7 Main components of aze...

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Abstract

The invention discloses a method for preparing terpeneless dementholized peppermint oil through azeotropic distillation. The method comprises the following concrete steps of pumping dementholized peppermint oil into a rectifying tower filled with a packed rectifying column under negative pressure, then, adding an entrainer, then, reflowing, and fractionally collecting fractions; and separating the entrainer under normal pressure to obtain fractions, and selecting the fractions to be blended according to the content of the fractions to obtain the terpeneless dementholized peppermint oil. By using the method disclosed by the invention, the defects that the traditional rectifying method is high in energy consumption, the requirement for vacuum degree of a system is high, a distilled substrate is easily carbonized at high temperature, the loss of raw materials is relatively high, and the distilled substance has burnt flavor can be effectively avoided; on one hand, the dementholized peppermint oil prepared by using the method has low requirements for the system, and the prepared finished product has no burnt flavor and is pure in fragrance, and on the other hand, the terpeneless dementholized peppermint oil can be prepared by blending, so that the specification of the product is enriched, and different requirements are met; in addition, the method is simple and convenient to operate and suitable for large-scale production and application in industry.

Description

technical field [0001] The invention relates to the technical field of simple separation and preparation of plant volatile oil components, in particular to the simple separation and preparation of peppermint oil components. Background technique [0002] Menthin oil is the volatile oil obtained from the fresh stems and leaves of Mentha haplocalyx Briq. after steam distillation, freezing, and partial debraining. Its components are complex, mainly containing menthol, followed by menthone, mint Isoketones, terpenes and other components. Its main components are widely used, especially menthol, which is a common product in chemical, pharmaceutical, food, daily chemical and other industries. With the deepening of the application of peppermint oil, different industries put forward different requirements for its main components, forming different customer customization requirements. In order to improve the comprehensive utilization value of vegetable oil, simple separation and prepa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C11B9/02C11B3/12
Inventor 赵国平金劲松刘卫东朱俊峰张翼轸王广强赵彬郭希凯吴妍路花
Owner ANHUI FENGLE PERFUME
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