检出限
聚偏氟乙烯
赭曲霉毒素A
纳米纤维
适体
电极
复合数
材料科学
化学
色谱法
化学工程
纳米技术
复合材料
聚合物
工程类
物理化学
生物
真菌毒素
遗传学
食品科学
作者
Adel Mohammed Al‐Dhahebi,Rajan Jose,Mazli Mustapha,Mohamed Shuaib Mohamed Saheed
出处
期刊:Food Chemistry
[Elsevier]
日期:2022-10-01
卷期号:390: 133105-133105
被引量:39
标识
DOI:10.1016/j.foodchem.2022.133105
摘要
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 mL-1 to 1 ng mL-1 with a limit of detection of 2.15 fg mL-1 and quantification limit of 6.52 fg mL-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.
科研通智能强力驱动
Strongly Powered by AbleSci AI