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Green preparation method of high-purity tea saponin

A tea saponin, green technology, applied in the field of green preparation of high-purity tea saponin, can solve the problems of low extraction rate and poor purity of the product, and achieve the effects of high product purity, greenness, and less dissolution loss

Active Publication Date: 2018-12-14
QINGDAO INST OF BIOENERGY & BIOPROCESS TECH CHINESE ACADEMY OF SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Aiming at the problems of low extraction rate and poor purity of products existing in the current tea saponin extraction process, the invention provides a green preparation method of high-purity tea saponin, the method comprising the following steps:

Method used

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  • Green preparation method of high-purity tea saponin

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Embodiment 1

[0023] Embodiment 1. below in conjunction with attached figure 1 The green preparation method of high-purity tea saponin described in the present invention is described. The organic solvent described in this implementation is a mixture of two different polar solvents: absolute ethanol and camellia seed oil.

[0024] (1) Raw material pretreatment: take the defatted camellia oleifera seed meal, wherein the residual oil content is 2% of the mass of the camellia oleifera seed meal, grind and sieve after drying, take the camellia oleifera seed meal powder of 50 mesh below 60 mesh, and set aside.

[0025] (2) Take 10 g of Camellia oleifera seed meal powder obtained in step (1), add 95 mL of absolute ethanol and 5 mL of camellia seed oil, and stir evenly.

[0026] (3) Adjust the temperature of the feed solution in step (2) to 80° C., heat preservation and pretreatment for 4 hours, and carry out alcohol extraction.

[0027] (4) Filtrate the feed liquid obtained in step (3) while it i...

Embodiment 2

[0029] Embodiment 2. The green preparation method of high-purity tea saponin.

[0030] Repeat embodiment 1, the difference between this embodiment and embodiment 1 is that the lower layer precipitation described in step (4) in the present embodiment first passes through cold ethanol (cold ethanol refers to the ethanol identical with cooling temperature, refers to 4 here. ℃ of absolute ethanol, the same below), and then the precipitate is vacuum-dried to obtain a white tea saponin product. In this embodiment, by increasing the processing steps of cold ethanol cleaning, the yield of the final product is 82%, and the purity is 96%. .

Embodiment 3

[0031] Embodiment 3. repeat embodiment 1, the difference with embodiment 1 is, the degreased camellia oleifera seed dregs described in step (1) in the present embodiment, wherein residual grease amount is 10% of the camellia oleifera seed dregs quality.

[0032] This example examines that when the camellia oleifera seed meal contains relatively high oil residue, gray-white tea saponin with high yield and purity can still be obtained through the extraction method. The yield of the final product is 85%, and the purity is 90%.

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Abstract

The invention discloses a green preparation method of high-purity tea saponin, and relates to the field of tea saponin extraction. The invention provides the green preparation method for high-purity tea saponin in view of the problems of low extraction rate and poor purity in the current tea saponin extraction process, wherein the preparation method includes the following steps: (1) raw material pretreatment: crushing oil tea seed meal, and allowing to pass through a 20 mesh-80 mesh sieve, to obtain oil tea seed meal powder; (2) adding an organic solvent into the oil tea seed meal powder obtained in the step (1) according to the ratio of material to liquid of (1 g:6 mL)-(1 g:15 mL), and mixing, wherein the organic solvent is a mixed solvent of polar and non-polar solvents; (3) carrying outheat preservation of the material-liquid mixture of the step (2) for 3-6 h at the temperature of 50-100 DEG C; and (4) carrying out solid-liquid separation, and drying a precipitate precipitated after cooling the obtained liquid, to obtain tea saponin. The green preparation method is suitable for extraction and industrialized production of tea saponin.

Description

technical field [0001] The invention relates to the field of tea saponin extraction, in particular to a green preparation method of high-purity tea saponin. Background technique [0002] Camellia oleifera is a unique edible oil tree species in my country. Camellia oleifera seed meal is the residue cake of camellia oleifera seeds after oil extraction, which contains residual oil. The residual oil content varies according to the difference in oil extraction process, generally 0-15%. Camellia oleifera seed meal contains 10%-16% tea saponin, and is also rich in polysaccharides and proteins, so it is an excellent feed. However, due to the bitter and toxic taste of tea saponin, most of the camellia seed cakes cannot be directly eaten by animals, and can only be used as pond clearing agents or fertilizers, or exported to Southeast Asia and other countries and regions at a low price, resulting in a great waste of resources, and even more The most serious thing is that the backlog o...

Claims

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Application Information

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IPC IPC(8): C07J63/00C07H15/256C07H1/08
CPCC07H1/08C07H15/256C07J63/008
Inventor 王建勋侯同刚咸漠荀明月董晴晴
Owner QINGDAO INST OF BIOENERGY & BIOPROCESS TECH CHINESE ACADEMY OF SCI
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