IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0245383
(2002-09-18)
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등록번호 |
US-7267835
(2007-09-11)
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우선권정보 |
JP-2001-289166(2001-09-21) |
발명자
/ 주소 |
- Kitazume,Masato
- Katabami,Tadashi
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출원인 / 주소 |
- Dainippon Ink and Chemicals, Inc.
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대리인 / 주소 |
Edwards Angell Palmer & Dodge LLP
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인용정보 |
피인용 횟수 :
35 인용 특허 :
1 |
초록
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The present invention provides a sweetener which has mild sweetness like sugar while maintaining a high sweetness intensity of a Stevia sweetener and also has a sharp head-taste of sweetness, a sharp after-taste of sweetness, as well as reduction of the bitterness and astringency of after-taste pecu
The present invention provides a sweetener which has mild sweetness like sugar while maintaining a high sweetness intensity of a Stevia sweetener and also has a sharp head-taste of sweetness, a sharp after-taste of sweetness, as well as reduction of the bitterness and astringency of after-taste peculiar to the Stevia sweetener, and a process for producing the same. The sweetener contains steviol glucosides comprising β-1,4-galactosyl rebaudioside A having one to three β-1,4-bonded galactosyl groups in a molecule and rebaudioside A, wherein the following expressions (1) and (2) are satisfied: description="In-line Formulae" end="lead"[(GRA+RA)/(X)]≧0.4 (1)description="In-line Formulae" end="tail" description="In-line Formulae" end="lead"[(GRA)/(RA)]≧1.0 (2)description="In-line Formulae" end="tail" wherein GRA represents the weight percentage of the β-1,4-galactosyl rebaudioside A having one to three β-1,4-bonded galactosyl groups in a molecule, RA represents the weight percentage of the rebaudioside A, and X represents the weight percentage of the steviol glucosides.
대표청구항
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What is claimed is: 1. A sweetener which contains steviol glucosides comprising β-1,4-galactosyl rebaudioside A having one to three β-1,4-bonded galactosyl groups in a molecule and rebaudioside A, wherein the following expressions (1) and (2) are satisfied: description="In-line Formulae
What is claimed is: 1. A sweetener which contains steviol glucosides comprising β-1,4-galactosyl rebaudioside A having one to three β-1,4-bonded galactosyl groups in a molecule and rebaudioside A, wherein the following expressions (1) and (2) are satisfied: description="In-line Formulae" end="lead"[(GRA+RA)/(X)]≧0.4 (1)description="In-line Formulae" end="tail" description="In-line Formulae" end="lead"[(GRA)/(RA)]≧1.0 (2)description="In-line Formulae" end="tail" wherein GRA represents the weight percentage of the β-1,4-galactosyl rebaudioside A having one to three β-1,4-bonded galactosyl groups in a molecule, RA represents the weight percentage of the rebaudioside A, and X represents the weight percentage of the steviol glucosides; and at least one of the β-1,4-bonded galactosyl groups is bonded to the 13-G1 glucose residue of rebaudioside A, or is bonded to at least one of the 13-G2 and 13-G3 glucose residues, of rebaudioside A. 2. A sweetener according to claim 1, wherein the following expressions (3) and (4) are satisfied: description="In-line Formulae" end="lead"0.95≧[(GRA+RA)/(X)] ≧0.5 (3)description="In-line Formulae" end="tail" description="In-line Formulae" end="lead"10.0≧[(GRA)/(RA)] ≧1.1 (4).description="In-line Formulae" end="tail" 3. The sweetener according to claim 1 or 2, wherein the steviol glucosides further comprise β-1,4-galactosyl stevioside having one to two β-1,4-bonded galactosyl groups in a molecule and stevioside, and the following expression (5) is satisfied: description="In-line Formulae" end="lead"[(GRA+RA)/(GST+ST)]≧1.0 (5)description="In-line Formulae" end="tail" wherein GST represents the weight percentage of the β-1,4-galactosyl stevioside having one to two β-1,4-bonded galactosyl groups in a molecule, and ST represents the weight percentage of the stevioside. 4. A sweetener according to claim 1, wherein the steviol glucosides further comprise β-1,4-galactosyl stevioside having one to two β-1,4-bonded galactosyl groups in a molecule and stevioside, and the following expressions (3), (6) and (7) are satisfied: description="In-line Formulae" end="lead"0.95≧[(GRA+RA)/(X)] ≧0.5 (3)description="In-line Formulae" end="tail" description="In-line Formulae" end="lead"5.0≧[(GRA)/(RA)] ≧1.1 (6)description="In-line Formulae" end="tail" description="In-line Formulae" end="lead"[(GRA+RA)/(GST+ST)]≧1.5 (7)description="In-line Formulae" end="tail" wherein GST represents the weight percentage of the β-1,4-galactosyl stevioside having one to two β-1,4-bonded galactosyl groups in a molecule, and ST represents the weight percentage of the stevioside. 5. A sweetener according to claim 1, wherein the β-1,4-galactosyl rebaudioside A includes two or three β-1,4-bonded galactosyl groups. 6. A sweetener according to claim 1, wherein the β-1,4-bonded galactosyl groups are a 13-1,4-bonded galactosyl group bonded to a glucose residue bonded at the 13-position of a steviol skeleton of rebaudioside A and a β-1,4-bonded galactosyl group bonded to a glucose residue bonded at the 19-position of a steviol skeleton of rebaudioside A. 7. A process for preparing a sweetener, the process comprising allowing a β-1,4-galactosyl transferase to react on an aqueous solution containing a Stevia extract containing 40% by weight or more of rebaudioside A and a β-1,4-galactosyl sugar compound in a 5-to 20-fold amount based on the solid content of the Stevia extract, wherein the β-1,4-galactosyl transferase is reacted to provide at least one f3-1,4-bonded galactosyl group which is bonded to the 13-G1 glucose residue of rebaudioside A, or is reacted to provide at least one β-1,4-bonded galactosyl group which is bonded to at least one of the 13-G2 and 13-G3 glucose residues of rebaudioside A. 8. A process for preparing a sweetener according to claim 7, wherein the solid content of the Stevia extract containing 40% by weight or more of rebaudioside A in the aqueous solution is from 1 to 5% by weight and the β-1,4-galactosyl transferase is used in an amount of 1 to 1000 units based on 1 g of the solid content of the Stevia extract. 9. A process for preparing a sweetener according to claim 7 or 6, wherein the Stevia extract containing 40% by weight or more of rebaudioside A is a Stevia extract containing rebaudioside A in a 1.5-fold amount or more based on the weight of stevioside. 10. A process for preparing a sweetener according to claim 9, wherein the β-1,4-galactosyl sugar compound is lactose. 11. A process for preparing a sweetener according to claim 9, wherein the β-1,4-galactosyl transferase is an enzyme derived from microorganisms of the genus Bacillus. 12. A process for preparing a sweetener according to claim 7, wherein the sweetener prepared is a sweetener which contains steviol glucosides comprising β-1,4-galactosyl rebaudioside A having one to three β-1,4-bonded galactosyl groups per molecule and rebaudioside A, and the sweetener satisfies the following expressions (1) and (2): description="In-line Formulae" end="lead"[(GRA+RA)/(X)]≧0.4 (1)description="In-line Formulae" end="tail" description="In-line Formulae" end="lead"[(GRA)/(RA)]≧1.0 (2)description="In-line Formulae" end="tail" wherein GRA represents the weight percentage of the β-1,4-galactosyl rebaudioside A having one to three β-1,4-bonded galactosyl groups per molecule, RA represents the weight percentage of the rebaudioside A, and X represents the weight percentage of the steviol glucosides. 13. A process for preparing a sweetener according to claim 7, wherein the Stevia extract contains 50% by weight or more of rebaudioside A. 14. A process for preparing a sweetener according to claim 7, wherein the β-1,4-galactosyl transferase is reacted to provide a β-1,4-bonded galactosyl rebaudio side A wherein two or more β-1,4-bonded galactosyl groups are included. 15. A process for preparing a sweetener according to claim 5, wherein the β-1,4-galactosyl transferase is reacted to provide both groups of: a β-1,4-bonded galactosyl group bonded to a glucose residue bonded at the 13-position of a steviol skeleton of rebaudioside A; and a 13-1,4-bonded galactosyl group bonded to a glucose residue bonded at the 19-position of a steviol skeleton of rebaudioside A. 16. A sweetener which contains steviol glucosides comprising: at least one of β-1,4-galactosyl rebaudioside A having two to three β-1,4-bonded galactosyl groups in a molecule and rebaudioside A, wherein the following expressions (1) and (2) are satisfied: description="In-line Formulae" end="lead"[(GRA+RA)/(X)]≧0.4 (1)description="In-line Formulae" end="tail" description="In-line Formulae" end="lead"[GRA)/(RA)]≧1.0 (2)description="In-line Formulae" end="tail" wherein GRA represents the weight percentage of the β-1,4-galactosyl rebaudioside A having two to three β-1,4-bonded galactosyl groups in a molecule, RA represents the weight percentage of the rebaudioside A, and X represents the weight percentage of the steviol glucosides. 17. A sweetener according to claim 16, wherein the following expressions (3) and (4) are satisfied: description="In-line Formulae" end="lead"0.95≧[(GRA+RA)/(X)] ≧0.5 (3)description="In-line Formulae" end="tail" description="In-line Formulae" end="lead"10.0≧[(GRA)/(RA)] ≧1.1 (4).description="In-line Formulae" end="tail" 18. The sweetener according to claim 16, wherein the steviol glucosides further comprise: β-1,4-galactosyl stevio side having one to two β-1,4-bonded galactosyl groups in a molecule and stevioside, and the following expression (5) is satisfied: description="In-line Formulae" end="lead"[(GRA+RA)/(GST+ST)]≧1.0 (5)description="In-line Formulae" end="tail" wherein GST represents the weight percentage of the β-1,4-galactosyl stevioside having one to two β-1,4-bonded galactosyl groups in a molecule, and ST represents the weight percentage of the stevioside. 19. A sweetener according to claim 16, wherein the steviol glucosides further comprise: β-1,4-galactosyl stevioside having one to two β-1,4-bonded galactosyl groups in a molecule and stevioside, and the following expressions (3), (6) and (7) are satisfied: description="In-line Formulae" end="lead"0.95≧[(GRA+RA)/(X)] ≧0.5 (3)description="In-line Formulae" end="tail" description="In-line Formulae" end="lead"5.0≧[(GRA)/(RA)] ≧1.1 (6)description="In-line Formulae" end="tail" description="In-line Formulae" end="lead"[(GRA+RA)/(GST+ST)]≧1.5 (7)description="In-line Formulae" end="tail" wherein GST represents the weight percentage of the β-1,4-galactosyl stevioside having one to two β-1,4-bonded galactosyl groups in a molecule, and ST represents the weight percentage of the stevioside.
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