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035 _a.b1231027x
099 _aAIT Thesis no.FB-18-05
100 1 _aGunawardena, Samaratunga Don Niroshan Chinthaka
245 1 0 _aDetection of 3-monochloropropane-1, 2-diol (3-MCPD) using molecularly imprinted Poly(3-aminophenylboronic acid)
260 _aPathum Thani, Thailand :
_bAsian Institute of Technology,
_c2018
300 _a74 leaves :
_bill. +
_e1 online resource
490 1 _aThesis ;
_vno.FB-18-05
500 _aA thesis submitted in partial fulfillment of the requirements for the degree of Master of Engineering in Food Engineering & Bioprocess Technology, School of Environment, Resources and Development
502 _aThesis (M. Sc.) - Asian Institute of Technology, 2018
520 _aScreen printed sensor development is a remarkable sector of present - day electroanalysis. Molecularly imprinted polymers (MIP) enable highly selective and sensitive sensing approaches. Combining these two applications, a selective sensor was developed for t he detection of 3 - monochloropropane - 1,2 - diol (3 - MCPD) which is a process induced food contaminant. A screen printed carbon electrode (SPCE) modified with multiwalled carbon nanotubes (MWCNT), gold nanoparticles (AuNP) and molecularly imprinted poly(3 - amino phenylboronic acid) was used as the sensing platform. Morphological and electrochemical characterizations of the sensor were done using FE - SEM/EDX and potentiometry respectively. In comparison to the non - imprinted sensor, the MIP sensor demonstrated a stat istically significant ( p < .05 ) response towards 3 - MCPD. Fabrication and measurement conditions were optimized for selected parameters. The optimized sensor showed a linear range at 300 to 1500 oM and the sensitivity was 0.011 mV/oM. The LOD and LOQ of the sensor were ascertained to be 192.53 oM and 583.42 oM respectively. The sensor exhibited rather a good selectivity against 1,3 - DCP, 1,2 - propanediol, glycerol , and D - glucose. The pot entiometric response of the sensor was moderately reproducible with a n RSD of <15%. High stability of the sensor was depicted by the non - significant change ( p > .05) in response over 20 days of storage at room temperature. Applicability of the developed sen sor for soy sauce analysis was occluded by the complexities of the food matrix. Further studies are necessary to accomplish real sample application and to ameliorate the sensitivity of the developed sensor.
650 0 _aMolecular imprinting
650 0 _aElectrochemical sensors
700 1 _aLoc Thai Nguyen,
_eChairperson
700 1 _aAnal, Anil Kumar,
_eExamination Committee
700 1 _aSalin, Krishna R.,
_eExamination Committee
700 1 _aSadiq, Muhammad Bilal,
_eExamination committee
710 2 _aAsian Institute of Technology Fellowship,
_eScholarship donor
810 2 _aAsian Institute of Technology.
_tThesis ;
_vno.FB-18-05
856 _3Full-Text
_uhttp://203.159.5.9/ait-thesis/detail.php?q=B02869
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