Journal
TOXICOLOGY AND INDUSTRIAL HEALTH
Volume 27, Issue 1, Pages 35-39Publisher
SAGE PUBLICATIONS INC
DOI: 10.1177/0748233710380219
Keywords
Invertase; Rhodotorula glutinis; magnetic field; reducing sugar; fermentation
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Invertase is an important enzyme used in many fields especially in food industry to produce fructose syrups. The current study focused on increasing invertase production by exposing Rhodotorula glutinis to extremely low magnetic fields (ELMF; 0 and 7 mT). For this purpose, the microorganism was allowed to grow in normal magnetic field and ELMF for 72 hours at the same temperature (24 +/- 2 degrees C). The fermentation was carried out in submerged culture for 120 hours. The results showed that invertase production is strongly dependent on the growth conditions of the microorganism. Both of the different magnetic fields applied to R. glutinis increased invertase production ranged from 48%-67% when compared with the control. On the other hand, ELMF treatment increased biomass formation about 14%-28% when compared with the control. As a result, magnetic field treatment could effectively be used in the production of invertase by R. glutinis.
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