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Preparation method of oak extracting solution

A technology for extracting liquid and oak, applied in the field of winemaking, can solve the problems of decomposition energy consumption, large loss of organic solvent, aroma loss of heat-sensitive aroma components, etc., and achieve the effects of improving stability, realizing recycling, and reducing the loss of aroma components

Inactive Publication Date: 2016-01-20
YANTAI CHANGYU GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to overcome above-mentioned deficiencies in the prior art, and provide a kind of preparation method of oak extract; Problems such as high energy consumption and large loss of organic solvents during the concentration process

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Example 1, using American white oak as the oak raw material, slice it to make oak chips with a length of 3 cm, a width of 1.5 cm, and a thickness of 0.7 cm; the oak chips are subjected to infrared baking, the temperature is controlled at 190 ° C, and the baking time 40min; put the baked oak chips in an ultra-high pressure extraction tank, add 60% ethanol 7.5 times the weight of the oak chips, seal, pressurize to 350MPa, keep the pressure for 5.5min, release the pressure to normal pressure, and then filter to remove Slag, collect the filtrate; separate the filtrate with a centrifuge, centrifuge at 5000 rpm for 12.5min, collect the centrifugate, and set aside; use an ultrafiltration membrane with a molecular weight cut-off of 30000 to perform ultrafiltration on the centrifuged supernatant at room temperature , the transmembrane pressure difference is 0.2Mpa; when the permeate accounted for 92.5% of the extract entering the ultrafiltration system, the ultrafiltration was st...

Embodiment 2

[0017] Example 2, using American white oak, sessile oak, and sessile oak as oak raw materials, sliced ​​to make oak chips with a length of 4 cm, a width of 2 cm, and a thickness of 1 cm; the oak chips were infrared-baked, and the temperature was controlled at 220 ° C. , baked for 20 minutes; put the baked oak chips in an ultra-high pressure extraction tank, add 40% ethanol 10 times the weight of the oak chips, seal, pressurize to 600MPa, hold the pressure for 3 minutes, release the pressure to normal pressure, Then filter to remove the slag, collect the filtrate; separate the filtrate with a centrifuge, and centrifuge for 10min under the condition of 6000 rpm, collect the centrifugate for subsequent use; Ultrafiltration, the transmembrane pressure difference is 0.3Mpa; when the permeate accounts for 95% of the extract entering the ultrafiltration system, stop the ultrafiltration; collect the ultrafiltration permeate, and use a nanofiltration membrane with a molecular weight cut...

Embodiment 3

[0019] Example 3, taking Quercus mongolica and Quercus liaotungen as oak raw materials, sliced ​​to make oak chips with a length of 2 cm, a width of 1 cm, and a thickness of 0.5 cm; the oak chips were subjected to infrared baking, the temperature was controlled at 160 ° C, and the baking time was 60 min ;Put the baked oak chips in an ultra-high pressure extraction tank, add 80% ethanol that is 5 times the weight of the oak chips, seal, pressurize to 100MPa, hold the pressure for 8 minutes, release the pressure to normal pressure, and then filter to remove the residue , collect the filtrate; separate the filtrate with a centrifuge, centrifuge at 4000 r / min for 15 minutes, collect the centrifugate, and reserve it; The pressure difference is 0.1Mpa; when the permeate accounts for 90% of the extract entering the ultrafiltration system, the ultrafiltration is stopped; the ultrafiltration permeate is collected, and the nanofiltration membrane with a molecular weight cut-off of 200 is...

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PUM

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Abstract

The invention discloses a preparation method of an oak extracting solution. The method is characterized in that oak wood serves as raw material, obtained brown liquid after the oak wood is sliced and subjected to infrared baking, ultrahigh-pressure extraction, centrifuging, ultrafiltration and nanofiltration is the oak extracting solution, and the oak extracting solution is added into wine or brandy according to a certain proportion when wine or brandy is mixed. Far infrared radiation is used for replacing a traditional firing mode, a resistance heating mode and other baking modes, and the ultrahigh-pressure extraction and membrane separation technology is adopted for extracting and concentrating aroma and flavor producing substances in the oak wood; the preparation method has the advantages that energy consumption is low, the extraction efficiency is high, extraction and concentration are both completed under the normal temperature condition, and extracting solvents can be recycled; the oak extracting solution prepared through the method has full-bodies oak aroma and rich hydrolysable tannin, besides, the production technology is simple, use is convenient, wine or brandy can fast generate the sensory characteristic that the wine or brandy is subjected to oak barrel ageing, the production period is shortened, and product quality is improved.

Description

Technical field: [0001] The invention relates to the technical field of brewing, in particular to a method for preparing oak extract, and is especially suitable for use in wine and brandy. Background technique: [0002] For hundreds of years, oak barrels have been widely used as wine storage containers. Wine and brandy are aged in oak barrels. Due to the combined effects of micro-oxygenation and tannins, volatile aroma components, phenols and other substances in oak, the color stability and rich aroma of wine and brandy during aging in oak barrels Degree, softness of mouthfeel, etc. all show excellent characteristics. Therefore, the wine and brandy industry has a huge demand for oak barrels every year. However, due to the high cost of making and using oak barrels and the need for a long aging period, various types of substitutes such as oak boards, oak chips, oakin, and oak extracts have also appeared on the market to produce oak barrels. Effect. Among them, the oak extra...

Claims

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Application Information

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IPC IPC(8): C11B9/02
Inventor 李记明李兰晓于英沈志毅姜文广赵虎
Owner YANTAI CHANGYU GRP CO LTD
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