IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0220173
(2001-03-02)
|
등록번호 |
US-7396549
(2008-07-08)
|
우선권정보 |
BE-2000/0174(2000-03-03) |
국제출원번호 |
PCT/BE01/000033
(2001-03-02)
|
§371/§102 date |
20020828
(20020828)
|
국제공개번호 |
WO01/064830
(2001-09-07)
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발명자
/ 주소 |
|
출원인 / 주소 |
- ETS. Robert Stiernon, S.A.
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대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
0 인용 특허 :
4 |
초록
▼
The invention concerns an enzymatic method for making oenological tannins starting with lumps of wood and an enzymatic method for transforming tannins into tannins for wine-making purposes. The inventive method comprises a step which consists in contacting the lumps of wood or tannins with an aqueou
The invention concerns an enzymatic method for making oenological tannins starting with lumps of wood and an enzymatic method for transforming tannins into tannins for wine-making purposes. The inventive method comprises a step which consists in contacting the lumps of wood or tannins with an aqueous solution comprising a composition containing enzymes of the cellulase class. The invention also concerns an enzymatic composition mainly consisting of enzyme of the cellulase class for making oenological tannins, comprising an endocellulase activity, a xylanase activity a β-mannanase and/or α-amylase activity.
대표청구항
▼
The invention claimed is: 1. A method for producing oenological tannins from lumps of wood, which comprises the steps of bringing the wood into contact with an aqueous enzymatic composition containing one or more cellulase class enzymes; filtering the composition to obtain a liquid extract therefro
The invention claimed is: 1. A method for producing oenological tannins from lumps of wood, which comprises the steps of bringing the wood into contact with an aqueous enzymatic composition containing one or more cellulase class enzymes; filtering the composition to obtain a liquid extract therefrom; and lyophylizing the liquid extract to afford a solid composition comprising oenological tannins; wherein the enzymatic composition comprises one or more enzymes selected from the group consisting of cellobiohydrolases, endoglucanases, β-glucosidases, hemicellulases, α-amylases, xylanases, β-mannanases, endocellulases, and mixtures of these enzymes; wherein the enzymatic composition comprises an endocellulase activity, a xylanase activity, a β-mannanase activity, and an α-amylase activity, and includes one or more enzyme activities selected from the group consisting of: an endocellulase activity between 10��106 and 1��109 ECU per tonne of wood to be treated, a xylanase activity between 6��106 and 0.6��109 BXU per tonne of wood to be treated, a β-mannanase activity between 4��106 and 0.4��109 MNU per tonne of wood to be treated and an α-amylase activity between 10��106 and 1��109 αTU per tonne of wood to be treated. 2. The method of claim 1, wherein the wood is brought into contact with the enzymatic composition by immersion in the composition for a period of time ranging from 5 minutes to 2 weeks. 3. The method of claim 1, wherein the pH of the composition is between 3 and 8. 4. The method of claim 1, wherein the temperature of the composition is between 20 and 90�� C. 5. The method of claim 1, wherein the lumps of wood are in the form of sawdust. 6. The method of claim 1, wherein the lumps of wood are in the form of woodchips. 7. A method for transforming tannins obtained by extraction of wood with solvent to oenological tannins, the method comprising contacting the tannins with an aqueous enzymatic composition containing one or more cellulase class enzymes to form an oenological tannin extract; filtering the tannin extract to obtain a filtrate; and lyophylizing the filtrate to form a solid composition comprising oenological tannins; wherein the enzymatic composition comprises one or more enzymes selected from the group consisting of cellobiohydrolases, endoglucanases, β-glucosidases, hemicellulases, α-amylases, xylanases, β-mannanases, endocellulases, and mixtures of these enzymes; wherein the enzymatic composition comprises an endocellulase activity, a xylanase activity, a β-mannanase activity, and an α-amylase activity, and includes one or more enzyme activities selected from the group consisting of: an endocellulase activity between 10��106 and 1��109 ECU per tonne of wood to be treated, a xylanase activity between 6��106 and 0.6��109 BXU per tonne of wood to be treated, a β-mannanase activity between 4��106 and 0.4��109 MNU per tonne of wood to be treated and an α-amylase activity between 10��106 and 1��109 αTU per tonne of wood to be treated. 8. An enzymatic composition for producing oenological tannins, comprising enzymes of the cellulase class, and which comprises an endocellulase activity, a xylanase activity, a β-mannanase activity, and an α-amylase activity, and includes one or more enzyme activities selected from the group consisting of: an endocellulase activity between 10��106 and 1��109 ECU per tonne of wood to be treated, a xylanase activity between 6��106 and 0.6��109 BXU per tonne of wood to be treated, a β-mannanase activity between 4��106 and 0.4��109 MNU per tonne of wood to be treated and an α-amylase activity between 10��106 and 1��109 αTU per tonne of wood to be treated. 9. The method of claim 1, wherein the wood is chestnut wood. 10. The method of claim 7, wherein the tannins obtained by extraction of wood with a solvent are chestnut wood tannins. 11. The method of claim 1 wherein the wood is oak. 12. The method of claim 1 wherein the wood is chestnut.
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