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475194 occurrences (No.33 in the rank) during 5 years in the PubMed. [no cache] 500 found

9) Subsequently, the remaining coupling activity of Cov was measured.

--- ABSTRACT ---

PMID:23554404 DOI:10.1002/btpr.1737

2015 Biotechnology progress

* Effect of enzyme dehydration on alcalase-catalyzed dipeptide synthesis in near-anhydrous organic media.

- The effect of enzyme dehydration by molecular sieves on the coupling of phenylalanine amide and the carbamoylmethyl ester of N-protected phenylalanine in near-anhydrous tetrahydrofuran was investigated. This coupling was catalyzed by Alcalase covalently immobilized onto macroporous acrylic beads (Cov); these immobilized enzymes were hydrated prior to use. The dehydration kinetics of Cov by molecular sieve powder were determined by incubating Cov with different amounts of molecular sieve powder for different periods of time (0-80 h). Subsequently, the remaining coupling activity of Cov was measured. Dehydration-induced inactivation of Cov by molecular sieve powder was found to occur in three phases: (1) an initial, rapid, major dehydration-induced inactivation that takes place during the first activity measurement, (2) a phase of first-order inactivation, and (3) a plateau phase in activity. These dehydration kinetics were incorporated into a previously found reaction kinetics model. The resulting model was then used to fit progress curve data of the coupling in the presence of different amounts of molecular sieve powder. Upon establishment of parameter values, the model was used to predict independent data sets and found to work well.

--- ABSTRACT END ---

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(1)70 of	(13)6 patterns	(25)3 but	(37)2 functional
(2)54 null	(14)5 may	(26)3 changes	(38)2 increased
(3)49 and	(15)5 using	(27)3 for	(39)2 induces
(4)45 in	(16)5 with	(28)3 measured	(40)2 level
(5)17 was	(17)4 at	(29)3 through	(41)2 or
(6)11 against	(18)4 levels	(30)2 Questionnaire	(42)2 over
(7)10 during	(19)4 on	(31)2 after	(43)2 promotion
(8)9 (PA)	(20)4 which	(32)2 between	(44)2 resumption
(9)8 is	(21)4 while	(33)2 calcium	(45)2 than
(10)7 to	(22)3 among	(34)2 compared	(46)2 that
(11)7 were	(23)3 are	(35)2 decreased	(47)2 via
(12)6 by	(24)3 as	(36)2 diary	(48)2 when

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--- WordNet output for activity --- =>活動, 活躍, 働き, 動き, 活気 Overview of noun activity The noun activity has 6 senses (first 3 from tagged texts) 1. (43) activity -- (any specific behavior; "they avoided all recreational activity") 2. (36) action, activity, activeness -- (the state of being active; "his sphere of activity"; "he is out of action") 3. (13) bodily process, body process, bodily function, activity -- (an organic process that takes place in the body; "respiratory activity") 4. activity -- ((chemistry) the capacity of a substance to take part in a chemical reaction; "catalytic activity") 5. natural process, natural action, action, activity -- (a process existing in or produced by nature (rather than by the intent of human beings); "the action of natural forces"; "volcanic activity") 6. activeness, activity -- (the trait of being active; moving or acting rapidly and energetically; "the level of activity declines with age") --- WordNet end ---