Carambola is a fruit grown in tropical and subtropical regions of the world. Natural antioxidants including vitamin C, carotenoids, certain phenolic substances are abundant carambola fruit. As support health by acting as nutraceutical functional food additives, they help preserve preventing oxidation processes. The various organic or inorganic substrates hydrogen peroxide peroxides terminal oxi...

Human pyrimidine nucleoside monophosphate kinase is a polymorphic enzyme having two allelic gene products, UMPK 1 and UMPK 2, in several populations. A procedure is described for the partial purification of this enzyme from human red blood cells resulting in a 1500-fold purification of the enzyme for UMPK 1 and 583-fold for UMPK 2. The purified enzyme preparation catalyzed the phosphorylation o...

the human erythrocyte is a rich raw material for the purification of cu-zn superoxide dismutase (sod). we applied a simple and rapid procedure for the purification of sod from human erythrocytes by ion exchange chromatography. the purified sod had a specific activity of 2285.6 u/mg protein and gave a single band on polyacrylamide gel electrophoresis in the presence of sodium dodecyl sulfate (sd...

The endopeptidase, post-proline cleaving enzyme, has been purified 10,500-fold in an overall yield of 18% from lamb kidney. The enzyme possesses a specific activity of 45 ~mol/mg/min as tested with the substrate Z-Gly-Pro-Leu-Gly (K,,, = 6.0 x 10m5), has a molecular weight of 115,000, is comprised of two subunits with a molecular weight of 57,000, and exhibits maximal activity at pH 7.5 to 8.0....

In this study, Aspergillus niger lipase after extraction of medium culture was precipitated with different percentages of acetone and purified by ion exchange chromatography using SP-sepharose HP and Q-sepharose HP. The process of purification of the anzyme was studied by electrophoresis and the molecular weight was detected and determined by Zymography using overlying containing phenol red and...

This chapter aims to highlight the difficulties encountered during the purification of native cellular and membrane-bound enzymes from whole cell extracts. There are many reasons for wanting to purify enzymes, such as to fully characterize them or to mass produce them for commercial purposes. Regardless of the reason for wanting to purify an enzyme, the general extraction and purification proce...

Benzyl Alcohol Dehydrogenase (BADH) is an important enzyme for hydrocarbon degradation, which can oxidize benzyl alcohols to aldehydes, while being capable of catalyzing a reversible reaction by reducing benzaldehyde. BADH is a member of medium chain alcohol dehydrogenases, in which zinc and NAD are essential for enzyme activity. This paper describes the expression, purification, and characteri...