Stability of enzyme preparations on radiosterilization.

Effects of Enzyme - Preparations upon Penicillin

Influence of a Novel Magnetic Recoverable Support on Kinetic, Stability and Activity of Beta-amylase Enzyme

In this paper, covalent immobilization of beta amylase enzyme on the surface of modified magnetic nano particles (ZnFe2O4@SiO2-NH2) is reported. For doing so, at first, the magnetic nanoparticles of ZnFe2O4 were synthesized by chemical co-precipitation method and then tetraethyl orthosilicate (TEOS) and 3-aminopropyltriethoxy sil...

Transamination with Purified Enzyme Preparations (transaminase)

Braunstein and Kritzmann (1) have reported that with pigeon breast muscle any a-amino acid, with the possible exception of glycine, is active in transamination with either a-ketoglutaric or oxaloacetic acid. On the other hand, the author (2) found that transamination in pigeon breast muscle is limited to the following reactions. a (1) Z(+)-Glutamic acid + oxaloacetic acid e a-ketoglutaric acid ...

The measurement of the cytochrome oxidase activity of enzyme preparations.

containing 1 ml. 15 % glycerol solution, 1-0 ml. 0-1 M-sodium acetate, 0-5 ml. 0-3 M-bicarbonate solution and 0 5 ml. of the enzyme solution. Occurrence of the back reaction would have given rise to an uptake of C02 from the system, but in fact no such uptake was observed. Under these conditions, therefore, no back reaction takes place, so that the incompleteness ofthe de-esterification cannot ...

Oxidation of Ascorbic Acid by Enzyme Preparations from Orange

Many of the flavor compounds in citrus fruit are synthesized by oxidation-reduction reactions mediated by enzymes in the fruit. The oxidant in some of these reactions is the coenzyme, NADP. One possible way to regenerate this coenzyme to the active oxidized form is through the enzymic oxidation-reduction reactions involving glutathione and ascorbic acid. A system which degrades ascorbic acid in...