NDLI: Optimization of the multienzyme system for sucrose biosensor by response surface methodology

Content Provider	Springer Nature Link
Author	Gouda, M.D. Thakur, M.S. Karanth, N.G.
Copyright Year	2001
Abstract	An immobilized multienzyme- and cathodic amperometry-based biosensor for sucrose was constructed for the analysis of food and fermentation samples. The multienzyme system, comprising invertase, mutarotase and glucose oxidase (GOD), was immobilized by using glutaraldehyde as cross-linking agent. Operating parameters of the biosensor for the estimation of sucrose in the range 1–10% were standardized. Response surface methodology (RSM) based on three-factor, three-variable design was used to evaluate the effect of important variables (concentration of enzymes, (varied in the range invertase (10–50 IU), mutarotase (5–105 IU) and GOD (1–9 IU)) on the response of biosensor. In the range of parameters studied, response time decreased with decrease in the invertase and with increase in mutarotase and GOD. Mutarotase concentration above 75 IU was found to result in an increased response time due to inhibition of mutarotase by its product β-D-glucose. The optimal conditions achieved for the analysis of sucrose were: invertase 10 IU, mutarotase 40 IU, and GOD 9 IU. With these conditions, the predicted and actual experimental response time values were 2.26 and 2.35 min respectively, showing good agreement.
Starting Page	595
Ending Page	600
Page Count	6
File Format	PDF
ISSN	09593993
Journal	World Journal of Microbiology and Biotechnology
Volume Number	17
Issue Number	6
e-ISSN	15730972
Language	English
Publisher	Kluwer Academic Publishers
Publisher Date	2001-01-01
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Chemistry/Food Science Biochemistry Microbiology Animal Anatomy Morphology Histology Environmental Biotechnology
Content Type	Text
Resource Type	Article
Subject	Physiology Medicine Applied Microbiology and Biotechnology Biotechnology

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