TY  - JOUR
VL  - 390
UR  - https://www.scopus.com/inward/record.uri?eid=2-s2.0-85130371663&doi=10.1016%2fj.foodchem.2022.133105&partnerID=40&md5=86fc5c616235a8266264b126078d8dda
JF  - Food Chemistry
A1  - Al-Dhahebi, A.M.
A1  - Jose, R.
A1  - Mustapha, M.
A1  - Saheed, M.S.M.
SN  - 03088146
PB  - Elsevier Ltd
Y1  - 2022///
KW  - Charge transfer; Electrochemical electrodes; Fruit juices; Nanofibers
KW  -  Aptasensors; Biosensor design; Electroactive material; Electrospuns; Food samples; Mycotoxin contamination; Nanofiber composites; Ochratoxin A; Piezoelectric sensors; Ultrasensitive
KW  -  Fluorine compounds
KW  -  aldehyde; aptamer; nanofiber; ochratoxin; polyvinylidene fluoride; sodium chloride; titanium carbide; aptamer; fluorocarbon; ochratoxin; polyvinyl derivative; polyvinylidene fluoride
KW  -  Article; electrospinning; food industry; grape juice; limit of detection; limit of quantitation; electrochemical analysis; genetic procedures
KW  -  Aptamers
KW  -  Nucleotide; Biosensing Techniques; Electrochemical Techniques; Fluorocarbon Polymers; Limit of Detection; Nanofibers; Ochratoxins; Polyvinyls
ID  - scholars16351
TI  - Ultrasensitive aptasensor using electrospun MXene/polyvinylidene fluoride nanofiber composite for Ochratoxin A detection
N1  - cited By 23
N2  - Ochratoxin A (OTA) has harmful effects to human and animal health; therefore, sensitive and selective detection of OTA is highly demanded. Herein, an ultrasensitive electrochemical aptasensor electrode comprising electrospun MXene/polyvinylidene fluoride (Ti3C2Tx/PVDF) nanofiber composite is presented. Addition of Ti3C2Tx up to 13 effectively increased the fiber diameter and lowered the β-phase of PVDF nanofibers, consequently lowering the charge transfer resistance. The nanofiber composite is then coated on the screen-printed carbon electrode to chemically functionalized with saline and aldehyde groups for efficient aptamer loading. The optimized aptasensor demonstrated sensitive detection of OTA over the dynamic concentration range from 1 fg mLâ??1 to 1 ng mLâ??1 with a limit of detection of 2.15 fg mLâ??1 and quantification limit of 6.52 fg mLâ??1, with high selectivity. The aptasensor could detect the OTA at femtogram per milliliter concentration in grape juice samples, demonstrating its enormous potential for OTA detection in food industry. © 2022 Elsevier Ltd
AV  - none
ER  -