Glucose Transforming Enzymes

Effects of glucose oxidase on the growth performance, serum parameters and faecal microflora of piglets

“…It catalyses the oxidation of β-D-glucose to gluconic acid by utilizing molecular oxygen as an electron acceptor with simultaneous production of H 2 O 2 (Hatzinikolaou & Macris, 1995). Two products of GOD hydrolysis are H 2 O 2 and gluconic acid, which may act as a bacteriocide (Crueger & Crueger, 1990;Rasiah et al, 2005;Costa et al, 2013) and acidity regulator (Nakao et al, 1997;Klein et al, 2002) to reduce the gastric pH, inhibit harmful bacteria and promote the growth of beneficial bacteria. Biagi et al (2006) reported that feeding gluconic acid can improve the growth performance of piglets after weaning.…”

Constitutive production of extracellular glucose isomerase by an osmophillic Aspergillus sp. under submerged conditions

“…5.3.1.5), commonly referred to as glucose isomerase (GI), is one of the three highest tonnage value enzymes (Bhosale et al 1990). It catalyzes the equilibrium reversible isomerization of D-glucose and D-xylose to D-fructose and D-xylulose (Crueger and Crueger 1992). Isomerization of glucose to fructose catalyzed by GI is commercially important for the production of High Fructose Corn Syrup [HFCS] (Crueger and Crueger 1992;Gaikwad and Deshpande 1992).…”

“…It catalyzes the equilibrium reversible isomerization of D-glucose and D-xylose to D-fructose and D-xylulose (Crueger and Crueger 1992). Isomerization of glucose to fructose catalyzed by GI is commercially important for the production of High Fructose Corn Syrup [HFCS] (Crueger and Crueger 1992;Gaikwad and Deshpande 1992). Application of GI for the production of fructose and HFCS has long been a goal of corn refining industry (Frost and Moss 1987), since this process converts glucose into a mixture, which is as sweet as sucrose (Lee et al 1972).…”

“…Most of the GI producing organisms have obligate requirement of D-xylose to induce enzyme production. However, xylose is expensive for use on commercial scale (Crueger and Crueger 1992). Extracellular production of GI from Aspergillus sp.…”

Partition of glucose oxidase from Aspergillus niger in aqueous two-phase systems based on salt and polyethylene glycol

“…The D-glucolactone hydrolyses spontaneously to gluconic acid (Gibson et al, 1964;Duke et al, 1969., Barker and Shirley, 1980;Doppner and Hartmeir, 1984;Crueger and Crueger, 1990). GOx is an intracellular and extracellular and is produced on industrial scale from Aspergillus and Penicillium genus.…”