A kind of additive for removing vegetable wax and method for removing vegetable wax

Abstract

The invention provides an additive for removing vegetable wax, which is a polyoxyethylene ether compound R(CH 2 CH 2 O) n H, wherein the group R is a C-containing 12‑18 The aliphatic alcohol group or alkylphenol group of , the polymerization degree n is 1-5. The invention also provides a method for removing vegetable wax, which mainly utilizes subcritical extraction technology, uses butane as an extraction solvent, and adds the additive polyoxyethylene ether compound to remove vegetable wax from plant raw materials. In the present invention, the above-mentioned additives can be used to effectively remove the vegetable wax without affecting the content of the effective components in the plant raw material, and improve the dewaxing efficiency of the subcritical extraction method.

Description

technical field

[0001] The invention belongs to the field of preparation of flavors and fragrances, and in particular relates to an additive for removing vegetable wax and a method for removing vegetable wax. Background technique

[0002] Plant wax is a barrier for plants to protect themselves. Its main components are various lipophilic compounds, which form a hydrophobic layer on its surface, which can limit non-porous water loss, resist ultraviolet radiation, and resist pests and diseases. Plant growth plays an important role. Natural flavors are an irreplaceable and important part of daily flavors. However, in the process of preparing extracts from natural plants, the waxes on the plant surface will inevitably be extracted into the extract, and the waxes in ethanol and water The low solubility will affect the product quality of the obtained extract, causing problems such as suspended solids and poor solubility during use. In addition, when this kind of plant extract con...

Examples

Embodiment 1

[0022] This embodiment provides an additive for removing waxy jujube, which is n-stearyl alcohol tripolyoxyethylene ether.

[0023] This embodiment also provides a method for removing waxy jujube by using the above-mentioned additives, comprising: transferring 400 g of the fully dried jujube particles to a subcritical extraction kettle, and then adding 4000 mL of butane (that is, the ratio of solid to liquid is 1:10) and n-stearyl alcohol tripolyoxyethylene ether accounting for 0.3% of the mass fraction of butane were extracted at 8°C for 3.5 hours, and the extraction pressure was the saturated vapor pressure of butane at this temperature; after the extraction was completed, it was evaporated under reduced pressure, and separated Jujube wax and pretreated jujube granules are obtained. Among them, the wax removal rate of jujube was 1.52%.

[0024] It should be noted that: the removal rate of various plant waxes herein refers to the mass percentage of the plant waxes removed from...

Embodiment 2

[0037] This embodiment provides an additive for removing the waxiness of raisins, which is n-dodecyl alcohol pentapolyoxyethylene ether.

[0038] The present embodiment also provides a method for removing waxy raisins by using the above-mentioned additives, comprising: transferring 500 g of raisins to a subcritical extraction kettle, and then adding 5000 mL of butane (that is, the ratio of solid to liquid is 1:10) and accounting for the mass of butane The fraction of 0.5% n-dodecyl alcohol pentapolyoxyethylene ether was extracted at 5°C for 4 hours, and the extraction pressure was the saturated vapor pressure of butane at this temperature. After the extraction, the wax was evaporated under reduced pressure, and the raisin wax and the pretreated raisin were separated. The total extraction yield was 1.12%, and the wax removal rate of the raisin was 0.98%.

Embodiment 3

[0045] This embodiment provides an additive for removing tea wax, which is 2-octyldecyl alcohol tripolyoxyethylene ether.

[0046] The present embodiment also provides a method for removing waxy tea leaves by using the above-mentioned additives, comprising: transferring 300 g of tea leaves to a subcritical extraction kettle, and then adding 3600 mL of butane (that is, the ratio of solid to liquid is 1:12) and butane 2-octyldecyl alcohol tripolyoxyethylene ether with a mass fraction of 1% alkane was extracted at 10°C for 2.5 hours, and the extraction pressure was the saturated vapor pressure of butane at this temperature. After the extraction is completed, evaporate under reduced pressure to separate and obtain tea wax and pretreated tea leaves. Among them, the removal rate of tea wax was 1.67%.

[0047] The pretreated tea leaves after subcritical butane dewaxing were prepared by a solvent extraction method to prepare tea extracts, using 95% ethanol as a solvent with a solid-t...

technical field

[0001] The invention belongs to the field of preparation of flavors and fragrances, and in particular relates to an additive for removing vegetable wax and a method for removing vegetable wax. Background technique

[0002] Plant wax is a barrier for plants to protect themselves. Its main components are various lipophilic compounds, which form a hydrophobic layer on its surface, which can limit non-porous water loss, resist ultraviolet radiation, and resist pests and diseases. Plant growth plays an important role. Natural flavors are an irreplaceable and important part of daily flavors. However, in the process of preparing extracts from natural plants, the waxes on the plant surface will inevitably be extracted into the extract, and the waxes in ethanol and water The low solubility will affect the product quality of the obtained extract, causing problems such as suspended solids and poor solubility during use. In addition, when this kind of plant extract con...

Examples

Embodiment 1

[0022] This embodiment provides an additive for removing waxy jujube, which is n-stearyl alcohol tripolyoxyethylene ether.

[0023] This embodiment also provides a method for removing waxy jujube by using the above-mentioned additives, comprising: transferring 400 g of the fully dried jujube particles to a subcritical extraction kettle, and then adding 4000 mL of butane (that is, the ratio of solid to liquid is 1:10) and n-stearyl alcohol tripolyoxyethylene ether accounting for 0.3% of the mass fraction of butane were extracted at 8°C for 3.5 hours, and the extraction pressure was the saturated vapor pressure of butane at this temperature; after the extraction was completed, it was evaporated under reduced pressure, and separated Jujube wax and pretreated jujube granules are obtained. Among them, the wax removal rate of jujube was 1.52%.

[0024] It should be noted that: the removal rate of various plant waxes herein refers to the mass percentage of the plant waxes removed from...

Embodiment 2

[0037] This embodiment provides an additive for removing the waxiness of raisins, which is n-dodecyl alcohol pentapolyoxyethylene ether.

[0038] The present embodiment also provides a method for removing waxy raisins by using the above-mentioned additives, comprising: transferring 500 g of raisins to a subcritical extraction kettle, and then adding 5000 mL of butane (that is, the ratio of solid to liquid is 1:10) and accounting for the mass of butane The fraction of 0.5% n-dodecyl alcohol pentapolyoxyethylene ether was extracted at 5°C for 4 hours, and the extraction pressure was the saturated vapor pressure of butane at this temperature. After the extraction, the wax was evaporated under reduced pressure, and the raisin wax and the pretreated raisin were separated. The total extraction yield was 1.12%, and the wax removal rate of the raisin was 0.98%.

Embodiment 3

[0045] This embodiment provides an additive for removing tea wax, which is 2-octyldecyl alcohol tripolyoxyethylene ether.

[0046] The present embodiment also provides a method for removing waxy tea leaves by using the above-mentioned additives, comprising: transferring 300 g of tea leaves to a subcritical extraction kettle, and then adding 3600 mL of butane (that is, the ratio of solid to liquid is 1:12) and butane 2-octyldecyl alcohol tripolyoxyethylene ether with a mass fraction of 1% alkane was extracted at 10°C for 2.5 hours, and the extraction pressure was the saturated vapor pressure of butane at this temperature. After the extraction is completed, evaporate under reduced pressure to separate and obtain tea wax and pretreated tea leaves. Among them, the removal rate of tea wax was 1.67%.

[0047] The pretreated tea leaves after subcritical butane dewaxing were prepared by a solvent extraction method to prepare tea extracts, using 95% ethanol as a solvent with a solid-t...

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