Invertase


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invertase

[′in·vər‚tās]
(biochemistry)

Invertase

 

(also saccharase, (β-fructofuranosidase), an enzyme of the hydrolase class, contained in plants, microorganisms, and the digestive juices of animals. It catalyzes the splitting of the β-fructofuranose radical from oligosaccharides and polysaccharides, and it catalyzes the conversion of sucrose into glucose and fructose. The latter reaction is called inversion. The name “invertase” derives from the circumstance that the reaction is accompanied by a change in the sign of optical rotation, with D-sucrose converting to invert sugar, a mixture of L-glucose and L-fructose. Invertase is especially active in yeast, from which it is extracted in the form of refined enzyme preparations. It also effects the transfer of the fructofuranose radical in-certain cases.

References in periodicals archive ?
Fungal invertase as an aid for fermentation of cane molasses into ethanol.
Because yeast use levels of glucose, not sucrose, as a way to control how much invertase is produced, colonies of purely enzyme-producing yeast make a lot of invertase and quickly burn through their food supply, ultimately limiting growth.
Dogan, "Immobilization of Invertase within Calcium Alginate Gel Capsules," Proc.
Figure 1 Enzyme Type Aids Digestion of Plant Source ECC Units Alpha- raffinose, Aspergillus GalU Galactosidase sugars niger Amylase starch, glucose Aspergillus DU (alpha-) oryzae Bromelain proteins, poly- Ananas PU peptides cosmous Cellulase cellulose Trichoderma CU (fibers) longbrachiatum Glucoamylase starch, glucose Aspergillus AGU niger Hemicellulase hemicellulose Aspergillus HCU fiber niger Invertase sucrose (sugar) Saccharocmyces IAU or (Sucrase) cerevisiae SU* Lactase lactose (milk Aspergillus ALU sugar) oryzae Lipase fats Aspergillus LU niger Malt Diastase starch, glucose Hordeum DP (Maltase) vulgare Papain proteins, poly- Carica papaya PU peptides Peptidase proteins, poly- Aspergillus HUT peptides oryzae Phytase phytic acid Aspergillus FTU niger Protease 3.
Comparison of salt and drought stress effects on maize growth and yield formation with regard to acid invertase activity in the kernels.
Gene Profiling for Invertase Activity: Assessment of Potato Varieties for Resistance towards Cold Induced Sweetening.
Despite that immobilized enzymes have been used for large-scale industrial processes in the food industries such as invertase or glucose isomerase for production of fructose corn syrup (107 tons per annum) [2,3,42], great efforts have been done to use NBC in large scale industrial processes.
Soil enzymes in reaction to old field succession, amylase, invertase, cellulase, dehydrogenase and urease.
Previous studies demonstrated that fruits contained a variety of sugar- and acid-metabolizing enzymes including soluble acid invertase, sucrose synthase (SS) in the synthetic or cleavage direction, sucrose phosphate synthase (SPS) (HASHIZUME et al.
In this work optimization parameters for maximum production of invertase by Penicillium notatum IBGE 03 in submerged fermentation were studied.