Journal
BIOSENSORS & BIOELECTRONICS
Volume 16, Issue 4-5, Pages 313-317Publisher
ELSEVIER ADVANCED TECHNOLOGY
DOI: 10.1016/S0956-5663(01)00129-4
Keywords
porous silicon; triglycerides; potentiometric sensor; biosensor; immobilisation; lipase; enzymatic hydrolysis
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A novel method for estimating triglycerides is reported. Porous silicon, prepared from p-type (100) crystalline silicon was thermally oxidized and used to immobilise lipase, an enzyme, which hydrolyses triglycerides resulting in the formation of fatty acids. This causes a change in the pH of the solution. Enzyme solution-oxidized porous silicon-crystalline silicon structure was used to detect changes in pH during the hydrolysis of tributyrin as a shift in the capacitance-voltage (C-V) characteristics. Detailed calibration of the sensor is included. (C) 2001 Elsevier Science B.V. All rights reserved.
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