US4614718A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Synthesis of sugar or sugar-alcohol fatty acid esters
Assignee: DKS Co Ltd
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Filing: 1984-08-14
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Granted: 1986-09-30
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Expires: 2004-08-14
Abstract
Abstract Sugar or sugar-alcohol fatty acid esters such as sucrose fatty acid esters are synthesized by incubating an aqueous mixture of a sugar or sugar-alcohol, a fatty acid and a catalytically active amount of a lipolytic enzyme, and recovering the resulting ester from the mixture.
Inventors
- 👤 Hajime Seino
- 👤 Tsuyoshi Uchibori
- 👤 Sachiko Inamasu
- 👤 Toshiyuki Nishitani
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 19:30
CPC Classifications
C; C07; C07H; C07H13/00; C07H13/02; C07H13/04; C07H13/06; C12; C12P; C12P19/00; C12P19/44; C12P7/00; C12P7/62; Y; Y10; Y10S; Y10S435/00; Y10S435/8215; Y10S435/822; Y10S435/911; Y10S435/921; Y10S435/931
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
86 words
A method for producing a sugar or sugar alcohol ester of a higher fatty acid which comprises the steps of incubating an aqueous mixture of a C 8 -C 22 fatty acid, a sugar or sugar alcohol and a catalytically active amount of a lipolytic enyme derived from the genus Pseudomonus, Enterobacterium, Chromobacterium, Mucor or Candida at a temperature from about 20° C. to about 60° C. for a sufficient time to reach an equilibrium to produce said ester, and recovering said ester from the mixture.
Claim 2
Independent Claim
86 words
A method for producing a sugar or sugar alcohol ester of a higher fatty acid which comprises the steps of incubating an aqueous mixture of a C 8 -C 22 fatty acid, a sugar or sugar alcohol and a catalytically active amount of a lipolytic enyme derived from the genus Pseudomonus, Enterobacterium, Chromobacterium, Mucor or Candida at a temperature from about 20° C. to about 60° C. for a sufficient time to reach an equilibrium to produce said ester, and recovering said ester from the mixture.
Claim 3
Dependent Claim
26 words
The method according to claim 1, wherein said fatty acid is capric, lauric, myristic, palmitic, stearic, oleic linoleic, linolenic acid or a mixture of these acids.
Claim 4
Dependent Claim
17 words
The method according to claim 1, wherein said sugar is a mono-, di-, tri-, tetra- or polysaccharide.
Claim 5
Dependent Claim
14 words
The method according to claim 3, wherein said sugar is glucose, fructose or sucrose.
Claim 6
Dependent Claim
18 words
The method according to claim 3, wherein said sugar alcohol is sorbitol, sorbitan, mannitol, xylitol, arabitol or dulcitol.
Claim 7
Dependent Claim
22 words
The method according to claim 1, wherein said incubation is carried out in a buffer having a pH from 4 to 9.
Claim 8
Dependent Claim
25 words
The method according to claim 6, wherein the molar ratio of said fatty acid to said sugar or sugar alcohol is from 1:1 to 1:6.
Claim 9
Dependent Claim
25 words
The method of claim 7, wherein the amount of said enzyme is from 10% to 200% by weight relative to said sugar or sugar alcohol.
Claim 10
Dependent Claim
34 words
The method of claim 8, wherein said fatty acid, said sugar or sugar alcohol and said enzyme are present in total at a concentration from 1 to 30 wt./vol. % in said aqueous mixture.
Claim 11
Dependent Claim
25 words
The method of claim 9, wherein said pH is from 5 to 8, and said temperature is from about 30° C. to about 50° C.
Claim 12
Dependent Claim
10 words
The method of claim 1, wherein said enzyme is immobolized.
References Cited (Backward Citations)
US3909356A
Cited
US4451565A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-09-29 | 1990-03-31 | 1990-09-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-09-29 | 1994-03-31 | 1994-09-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-09-29 | 1998-03-31 | 1998-09-30 | $7700.00 | Window Closed / Lapsed |