Dual fluorescent aptasensor for simultanous and quantitative detection of sulfadimethoxine and oxytetracycin residues in animal-derived foods tissues based on mesoporous silica

• Published in: Frontiers in nutrition (Lausanne) Vol. 9; p. 1077893
• Main Authors: Tang, Jiaming, Zheng, Xiaoling, Jiang, Shuang, Cao, Mingdong, Wang, Sixian, Zhou, Zhaoyang, Nie, Xunqing, Fang, Yu, Le, Tao
• Format: Journal Article
• Language: English
• Published: Switzerland Frontiers Media S.A 21.12.2022
• Subjects: fluorescent aptasensor; Nutrition; oxytetracycline; quantitative detection; silica nanoparticles; sulfadimethoxine; sulfadimethoxine; fluorescent aptasensor; oxytetracycline; quantitative detection; silica nanoparticles

Herein, we developed a dual fluorescent aptasensor based on mesoporous silica to simultaneously detect sulfadimethoxine (SDM) and oxytetracycline (OTC) in animal-derived foods. We immobilized two types of aptamers modified with FAM and CY5 on the silica surface by base complementary pairing reaction...