biotransformation — Engelska översättning - TechDico
The purified Y93F CGTase was 76.39 kDa based on 10% SDS-PAGE analysis and showed both β-cyclization and starch hydrolysis activities in a zymography assay. before enzyme assay. When required, different salts The half-life of the immobilized enzyme at 95 °C was five times higher than that of the soluble enzyme. The immobilized CGTase maintained 2016-7-20 · for the periplasmic enzyme but without the heat treatment step19.
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Determination of CD concentration The α-CD concentration was assayed by the decrease in absorbance at 507 nm caused by a methyl orange α-CD complex formation. Cyclodextrin glycosyltransferase, CGTase (E.C. 220.127.116.11) is a hydrolytic enzyme used in the starch hydrolysis for the synthesis of cyclodextrins (CDs). Bacterial CGTase often involved in the production of three major types of CDs, namely α-CD, β-CD and γ-CD at different ratio. γ-Cyclodextrin glycosyltransferase (γ-CGTase) catalyzes the biotransformation of low-cost starch into valuable γ-cyclodextrin (γ-CD), which is widely applied in biotechnology, food, and pharmaceutical industries. Assay of enzyme activityThe cyclization activity of CGTase was measured according to the method established by Kaneko et al.
The CGTase activity of the free and immobilized enzyme was measured as the β-CD forming activity in accordance 12 Dec 2012 By means of the cyclizing activity, CGTase is an unique enzyme capable of Enzyme activity was measured at 55°C using the standard assay One unit of CGTase activity was defined as the amount of enzyme releasing one µmol of β-CD per min under the defined assay conditions.
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Key words: Enzyme; Agro-industrial byproducts; Bacteria. Page 2. 38.
Patrick Adlercreutz - Research Outputs - Lund University
Effect of carbon and nitrogen sources: Effect of carbon source s (C) on growth and CGTase production was investigated by substituting soluble starch (1%) in basal medium with different types of CGTase activity was determined by the phenolphthalein assay method described by Goel and Nene (1995) with minor modification.
2013-7-15 · CGTase assay in different temperatures, ranging from 400.C - 900C for 10 min. Then the reaction was done according to the CGTase assay. The pH and thermal stability The pH stability of the recombinant enzyme was measured by incubating 0.1 ml pure enzyme with 0.2 ml of 0.1 M sodium acetate buffer (pH 4-5), 0.1 M sodium phosphate
Enzyme Assay CGTase activity was assayed with potato starch as the substrate by measurement of the decrease in iodine‐staining power; 0.2 mL of 0.26% potato starch in 0.2 mL 0.2 M glycine‐NaOH‐NaCl buffer (pH 8.5) was mixed with 10 µL of the enzyme solution and the …
taken for enzyme assay. In continuous culture A glass column bioreactor (of diameter 2Æ0 cm and 29 cm long) was used. The fermentation was carried out in batch operation, initially for 24 h; then, the continu-ous operation was started by introducing sterile fresh medium from the bottom of the bioreactor.
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Glutathione solution: Add 275 µl of assay buffer (8548a) into each vial (8548d) just before use. One vial is sufficient for 50 assays.
Our RediPlate™ product line includes en- zyme substrates predispensed in 96-well plates for high-throughput applications, along with
Catalase exhibits an unusual kinetic behavior in that it is not possible to saturate the enzyme with H2O2 substrate up to 5M catalase concentartion but there is a rapid inactivation of the enzyme at substrate concentrations above 0.1 M H2O2 . Therefore, the activity assay is typically carried out with 10-50 mM H2O2.
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2017-07-01 2014-12-15 1998-02-05 Cyclodextrin glycosyltransferase (CGTase) is an enzyme able to convert starch and other substrates into cyclodextrins (CDs). 2018-08-03 Enzyme assays can be split into two groups according to their sampling method: continuous assays, where the assay gives a continuous reading of activity, and discontinuous assays, where samples are taken, the reaction stopped and then the concentration of substrates/products determined. Enzyme assays can be split into two groups: Continuous assays, where the assay gives a continuous reading of activity. Discontinuous (Endpoint) assays, where samples are taken, the reaction stopped and then the concentration of substrates/products determined.
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E-BSTAA 21 Oct 2014 Sigma's Universal Protease Activity Assay: Casein as a Substrate Quick Guide to Calculating Enzyme Activity. Mark Temple. Mark Temple.
Patrick Adlercreutz - Forskningsoutput - Lunds universitet
cyclodextrin glycosyltransferase, cyclodextrin glucanotransferase, cyclomaltodextrin glucanotransferase, alpha-cgtase, beta-cgtase, toruzyme, 10 May 2013 glycosyltransferase (CGTase), produced by bacteria of the genera. Bacillus In the pH and thermo stability assays, 50% of enzyme activity was CGTase is an extracellular enzyme identified in a number of bacteria, mainly Bacillus . Assay of outer and inner membrane permeability. Outer membrane 2 Jun 2018 Enzymatic assay for CGTase. The crude CGTase was assayed for cyclization activity performed by following the method as suggested by Shim trypoxylicola SM-02 in the production of CGTase using residual substrates.
28 Nov 2013 Assay of CGTase activity. The CGTase activity of the free and immobilized enzyme was measured as the β-CD forming activity in accordance 12 Dec 2012 By means of the cyclizing activity, CGTase is an unique enzyme capable of Enzyme activity was measured at 55°C using the standard assay One unit of CGTase activity was defined as the amount of enzyme releasing one µmol of β-CD per min under the defined assay conditions.