CN101851553B

CN101851553B - Method for extracting tea seed oil from tea tree seeds

Info

Publication number: CN101851553B
Application number: CN2010102273325A
Authority: CN
Inventors: 刘东波
Original assignee: HUNAN FOUNTAINHEAD CO Ltd
Current assignee: Hunan Fountainhead Co ltd
Priority date: 2010-07-15
Filing date: 2010-07-15
Publication date: 2012-11-14
Anticipated expiration: 2030-07-15
Also published as: CN101851553A

Abstract

The invention relates to a method for extracting tea seed oil from tea tree seeds, which comprises the following steps: (1) crushing: drying the tea tree seeds, crushing to 16-40 meshes and putting in an extraction cylinder; (2) extracting: setting the temperature of an ice chest to be -3 DEG C-3 DEG C, pumping liquefied CO2 into the extraction cylinder by using a high-pressure pump through a purifier II and a preheater I, increasing pressure to 20MPa-40MPa and then extracting for 2h-4h under controlling the temperature of the extraction cylinder to be 35-60 DEG C; (3) separating: CO2 fluid containing grease enters a separating kettle from the extraction cylinder for separation, wherein the pressure of the separating kettle is 6MPa-12MPa, and the temperature thereof is 35-60 DEG C, the pressure of a separating kettle II is balanced with the posterior pressure, and the temperature is 35-55 DEG C. The invention has high extraction efficiency, low energy consumption, no environmental pollution, high product quality, high purity and no solvent residuals.

Description

A kind of method of from the tealeaves tree seeds, extracting tea seed oil

Technical field

The present invention relates to a kind of method of from the tealeaves tree seeds, extracting tea seed oil, especially relate to a kind of employing supercritical CO ₂Abstraction technique extracts the method for tea seed oil from the tealeaves tree seeds.

Background technology

Tea tree (Camellia sinensis) belongs to the Theaceae Camellia, is the perennial evergreen xylophyta.The leaf ovalize of tea tree, there is sawtooth at the edge, opens five lobes between leaf and spends in vain, and fruit is oblate, and is triangular in shape, exposes seed after fruit is drawn up.The tender leaf tea making that can pick tea-leaves when spring, autumn and set, seed can extract oil, and the utility value of tea tree is mainly at tealeaves at present, and the utility value of seed does not obtain exploitation.

At present, from the tealeaves tree seeds, extract the method for tea seed oil, study lessly, and traditional oils process for extracting is generally milling process and organic solvent extraction; These methods are not only extracted long flow path, and energy consumption is high, and yield is low; Serious environment pollution, and the quality product of extracting is relatively poor, at the bottom of the purity; The product that organic solvent extraction obtains also has peculiar smell and harmful dissolvent residual.

Summary of the invention

The object of the present invention is to provide a kind of efficient high, energy consumption is low, good product quality, no solvent residue, the method for from the tealeaves tree seeds, extracting tea seed oil of environmentally safe.

The objective of the invention is to realize through following technical scheme.

It comprises the steps: (1) pulverizing: clean tealeaves tree seeds is dried or dried, be crushed to 16 ~ 40 orders (preferred 20 ~ 30 orders), place the extraction cylinder, install sealing-ring, the plug of screwing; (2) extraction: the ice chest temperature is set to-3 ℃ ~ 3 ℃ (preferred-2 ℃ ~ 2 ℃, more preferably 0 ℃), opens CO ₂Steel cylinder, CO ₂Come out from steel cylinder, get in the ice chest through the gas purifier I and liquefy, squeeze into the extraction cylinder by HPP through cleaner II, preheater I then, boost to 20MPa ~ 40MPa (preferred 25MPa ~ 35MPa), make CO ₂Become supercutical fluid, control extraction cylinder temperature is 35 ℃ ~ 60 ℃, extraction time 2h ~ 4h, and the tea seed oil in the tealeaves tree seeds is extracted into CO ₂In the fluid; (3) separate: the CO that contains tea seed oil ₂Fluid after decompression gets into separation system, separates in separating still from the extraction cylinder, and the pressure of separating still I is 6MPa ~ 12MPa (preferred 8-10MPa; More preferably 9MPa); Temperature is 35 ℃ ~ 60 ℃, and the pressure of separating still II and way of escape balance, temperature are 35 ℃ ~ 55 ℃; With this understanding, grease and CO ₂Realize effectively separating, and emit CO from the separating still bottom ₂Draw from the separating still top, get in the ice chest through the cleaner I and liquefy, recycle.

Advantage of the present invention is: technical process is simple, and extraction efficiency is high, can contained grease in the tea-seed fully be extracted, and environmentally safe, and protected the natural nutrient component in the grease effectively.Gained tea seed oil quality product is pure; Free from extraneous odour, no solvent residue, many beneficiating ingredients such as rich in vitamin E, tea-polyphenol and unsaturated fatty acids; To reduce human blood viscosity, to reduce cardiovascula arteriosclerosis all helpful, has very high nutritive value and pharmaceutical use.

The present invention is to the economic worth of exploitation tealeaves tree seeds, and it is significant to make full use of tealeaves tree seeds resource.

Description of drawings

Fig. 1 is the present invention's technological process apparatus synoptic diagram.

Embodiment

Below in conjunction with accompanying drawing and preferred embodiment the present invention is further described, but and do not mean that the restriction scope of the present invention.

Embodiment 1

With reference to Fig. 1: (1) with the oven dry of 2Kg tealeaves tree seeds, is crushed to the barrel of putting into 5L extraction cylinder 8 behind 20 orders; (2) temperature of ice chest 5 is set to 0 ℃, and the temperature of extraction cylinder 8 is set to 35 ℃, and the temperature of separating still I 10 is set to 55 ℃, and the temperature of separating still II 12 is set to 55 ℃, opens CO ₂Steel cylinder 2, CO ₂Come out from steel cylinder 2, get into liquefaction in the ice chest 5, start HPP 6 then, CO through gas purifier I 3 ₂Through cleaner II 4, preheater I 7 is squeezed into extraction cylinder 8, boosts to 30MPa; Make it to become supercutical fluid and extract, get into separation system again after getting into 9 preheatings of preheater II, in order to realize separating fully of unsaturated fatty acids and non-lipid material; Reduce subsequent disposal work, adopt secondary to separate, the pressure of regulating separating still I 10 is 10MPa; The pressure of separating still II 12 keeps and way of escape balance, unsaturated fatty acids and CO ₂Separate in separating still I 10, and emit from separating still I 10 bottoms, non-lipid material gets into separating still II 12 after 11 preheatings of preheater III, with CO ₂In separating still II 12, separate CO ₂Draw from separating still II 12 tops,, get into ice chest 5 liquefaction, recycle through cleaner I 3 through under meter 1.Extracted 2 hours, and collected grease 248g, percentage extraction is 12.4%.

Warp is 84.2% according to unsaturated fatty acid content in the GC-MS method working sample; According to containing tea-polyphenol 9.4% in the tartrate iron determination of color sample; According to containing vitamin E 1.47mg/g in the determined by ultraviolet spectrophotometry sample.

Embodiment 2

With the oven dry of 2Kg tealeaves tree seeds, be crushed to 30 orders, the pressure of control extraction cylinder is 35MPa; Temperature is set to 40 ℃, and the pressure of separating still I is adjusted to 9MPa, and temperature is set to 55 ℃; The temperature of separating still II is set to 55 ℃, and other extracted 3 hours with embodiment 1; Collect grease 308g, percentage extraction is 15.4%.

Warp is 82.7% according to unsaturated fatty acid content in the GC-MS method working sample; According to containing tea-polyphenol 8.3% in the tartrate iron determination of color sample; According to containing vitamin E 1.34mg/g in the determined by ultraviolet spectrophotometry sample.

Embodiment 3

With the oven dry of 2Kg tealeaves tree seeds, be crushed to 40 orders, the pressure of control extraction cylinder is 25MPa; Temperature is set to 55 ℃, and the pressure of separating still I is adjusted to 8MPa, and temperature is set to 60 ℃; The temperature of separating still II is set to 60 ℃, and other extracted 2.5 hours with embodiment 1; Collect grease 254g, percentage extraction is 12.7%.Warp is 83.4% according to unsaturated fatty acid content in the GC-MS method working sample; According to containing tea-polyphenol 7.9% in the tartrate iron determination of color sample; According to containing vitamin E 1.49mg/g in the determined by ultraviolet spectrophotometry sample.

Claims

1. a method of from the tealeaves tree seeds, extracting tea seed oil is characterized in that, comprises the steps: (1) with the oven dry of 2Kg tealeaves tree seeds, is crushed to the barrel of putting into 5L extraction cylinder behind 20 orders; (2) temperature of ice chest is set to 0 ℃, and the temperature of extraction cylinder is set to 35 ℃, and the temperature of separating still I is set to 55 ℃, and the temperature of separating still II is set to 55 ℃, opens CO ₂Steel cylinder, CO ₂Come out from steel cylinder, get in the ice chest through the gas purifier I and liquefy, start HPP then, CO ₂Through the cleaner II, the preheater I is squeezed into the extraction cylinder, boosts to 30MPa; Making it to become supercutical fluid extracts; Get into separation system again after getting into the preheating of preheater II, adopt secondary to separate, the pressure of regulating the separating still I is 10MPa; The pressure of separating still II keeps and way of escape balance, unsaturated fatty acids and CO ₂Separate in the separating still I, and emit from separating still I bottom, non-lipid material gets into the separating still II after the preheating of preheater III, with CO ₂In the separating still II, separate CO ₂Draw from separating still II top,, get into ice chest liquefaction, recycle through the cleaner I through under meter; Extracted 2 hours.

2. a method of from the tealeaves tree seeds, extracting tea seed oil is characterized in that, (1) with the oven dry of 2Kg tealeaves tree seeds, is crushed to the barrel of putting into 5L extraction cylinder behind 30 orders; (2) temperature of ice chest is set to 0 ℃, and the temperature of extraction cylinder is set to 40 ℃, and the temperature of separating still I is set to 55 ℃, and the temperature of separating still II is set to 55 ℃, opens CO ₂Steel cylinder, CO ₂Come out from steel cylinder, get in the ice chest through the gas purifier I and liquefy, start HPP then, CO ₂Through the cleaner II, the preheater I is squeezed into the extraction cylinder, boosts to 35MPa; Making it to become supercutical fluid extracts; Get into separation system again after getting into the preheating of preheater II, adopt secondary to separate, the pressure of regulating the separating still I is 9MPa; The pressure of separating still II keeps and way of escape balance, unsaturated fatty acids and CO ₂Separate in the separating still I, and emit from separating still I bottom, non-lipid material gets into the separating still II after the preheating of preheater III, with CO ₂In the separating still II, separate CO ₂Draw from separating still II top,, get into ice chest liquefaction, recycle through the cleaner I through under meter; Extracted 3 hours.