Production of peracids using an enzyme having perhydrolysis activity
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
C12P-007/40
C12N-009/14
C12N-009/18
C12N-015/00
C12N-001/21
출원번호
UP-0538565
(2009-08-10)
등록번호
US-7807425
(2010-10-26)
발명자
/ 주소
DiCosimo, Robert
Gavagan, John Edward
Payne, Mark
출원인 / 주소
E.I. du Pont de Nemours and Company
인용정보
피인용 횟수 :
7인용 특허 :
22
초록▼
A process is provided for producing peroxycarboxylic acids from carboxylic acid esters. More specifically, carboxylic acid esters are reacted with an inorganic peroxide, such as hydrogen peroxide, in the presence of an enzyme catalyst having perhydrolysis activity. The present perhydrolase catalysts
A process is provided for producing peroxycarboxylic acids from carboxylic acid esters. More specifically, carboxylic acid esters are reacted with an inorganic peroxide, such as hydrogen peroxide, in the presence of an enzyme catalyst having perhydrolysis activity. The present perhydrolase catalysts are classified as members of the carbohydrate esterase family 7 (CE-7) based on the conserved structural features. Further, disinfectant formulations comprising the peracids produced by the processes described herein are provided.
대표청구항▼
What is claimed is: 1. A process for producing a peroxycarboxylic acid comprising: a) providing a set of reaction components, said components comprising: A) at least one substrate selected from the group consisting of: i) esters having the structure [X]mR5 wherein X=an ester group of the formu
What is claimed is: 1. A process for producing a peroxycarboxylic acid comprising: a) providing a set of reaction components, said components comprising: A) at least one substrate selected from the group consisting of: i) esters having the structure [X]mR5 wherein X=an ester group of the formula R6C(O)O; R6=a C1 to C7 linear, branched or cyclic hydrocarbyl moiety, optionally substituted with hydroxyl groups or C1 to C4 alkoxy groups, wherein R6 optionally comprises one or more ether linkages for R6=C2 to C7; R5=a C1 to C6 linear, branched, or cyclic hydrocarbyl moiety optionally substituted with hydroxyl groups, wherein each carbon atom in R5 individually comprises no more than one hydroxyl group or no more than one ester group; wherein R5 optionally comprises one or more ether linkages; m=1 to the number of carbon atoms in R5; and wherein said esters have a solubility in water of at least 5 ppm at 25° C.; ii) glycerides having the structure wherein R1═C1 to C7 straight chain or branched chain alkyl; said C1 to C7 straight chain or branched chain alkyl being optionally substituted with an hydroxyl or a C1 to C4 alkoxy group and R3 and R4 are individually H or R1C(O); and iii) acetylated saccharides selected from the group consisting of acetylated monosaccharides, acetylated disaccharides, and acetylated polysaccharides; B) a source of peroxygen; and C) an enzyme catalyst comprising an enzyme, wherein said enzyme has perhydrolase activity and comprises a polypeptide having at least 95% sequence identity to the amino acid sequence set forth in SEQ ID NO:106; and b) combining said reaction components under suitable reaction conditions whereby a peroxycarboxylic acid is produced. 2. The process of claim 1 wherein the enzyme having perhydrolase activity comprises the amino acid sequence set forth in SEQ ID NO:106. 3. The process of claim 1 wherein the substrate is selected from the group consisting of: monoacetin; diacetin; triacetin; monopropionin; dipropionin; tripropionin; monobutyrin; dibutyrin; tributyrin; glucose pentaacetate; xylose tetraacetate; acetylated xylan; acetylated xylan fragments; β-D-ribofuranose-1,2,3,5-tetraacetate; tri-O-acetyl-D-galactal; tri-O-acetyl-glucal; monoesters or diesters of 1,2-ethanediol, 1,2-propanediol, 1,3-propanediol, 1,2-butanediol, 1,3-butanediol, 2,3-butanediol, 1,4-butanediol, 1,2-pentanediol, 2,5-pentanediol, 1,6-pentanediol, 1,2-hexanediol, 2,5-hexanediol, 1,6-hexanediol; and mixtures thereof. 4. The process of claim 1 wherein said enzyme is encoded by a nucleic acid molecule that hybridizes to the polynucleotide of SEQ ID NO: 101, SEQ ID NO: 104, or SEQ ID NO: 105 under the following conditions: 0.1×SSC, 0.1% SDS at 65° C. and washed with 2×SSC, 0.1% SDS at 65° C., followed by second wash with 0.1×SSC, 0.1% SDS at 65° C. 5. The process of claim 1 wherein the peroxycarboxylic acid is produced at a concentration of at least 20 ppm within about 5 minutes to about 2 hours of combining the reaction components. 6. The process of claim 1 wherein the peroxycarboxylic acid produced is peracetic acid, perpropionic acid, perbutyric acid, perlactic acid, perglycolic acid, permethoxyacetic acid, per-β-hydroxybutyric acid, or mixtures thereof. 7. The process of claim 1 wherein the peroxycarboxylic acid produced is peracetic acid. 8. The process of claim 1 wherein the enzyme catalyst is in the form of a microbial cell, a permeabilized microbial cell, a microbial cell extract, a partially purified enzyme, or a purified enzyme. 9. The process of claim 1 wherein the enzyme catalyst lacks catalase activity.
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