浏览全部资源
扫码关注微信
1.安徽师范大学附属中学,安徽 芜湖 241000
2.安徽师范大学 生命科学学院,安徽 芜湖 241000
史永鑫,硕士,高级教师,研究方向:适配体传感器及DNA组装,E-mail:yxins109@sina.com
收稿日期:2024-07-04,
修回日期:2024-08-07,
录用日期:2024-09-09,
纸质出版日期:2025-04-15
移动端阅览
张曦文,史永鑫,季学涛,王宝娟.阳离子交换碲化镉量子点对莱克多巴胺的荧光可视化分析[J].分析测试学报,2025,44(04):682-688.
ZHANG Xi-wen,SHI Yong-xin,JI Xue-tao,WANG Bao-juan.Fluorescence Visualized Analysis of Ractopamine by Cationic Exchange Cadmium Telluride Quantum Dots[J].Journal of Instrumental Analysis,2025,44(04):682-688.
张曦文,史永鑫,季学涛,王宝娟.阳离子交换碲化镉量子点对莱克多巴胺的荧光可视化分析[J].分析测试学报,2025,44(04):682-688. DOI: 10.12452/j.fxcsxb.240704191.
ZHANG Xi-wen,SHI Yong-xin,JI Xue-tao,WANG Bao-juan.Fluorescence Visualized Analysis of Ractopamine by Cationic Exchange Cadmium Telluride Quantum Dots[J].Journal of Instrumental Analysis,2025,44(04):682-688. DOI: 10.12452/j.fxcsxb.240704191.
利用碲化镉量子点(CdTe QDs)和银离子(Ag
+
)之间的阳离子交换反应(CER)以及适配体的特异性识别性质,结合信号放大的无酶催化发夹组装(CHA),建立了一种低成本、高灵敏度的莱克多巴胺(RAC)现场定量检测方法,检出限低至2.3 pmol·L
-1
,远低于食品法典委员会建议的最大残留限量(MRL)。该方法的关键是适配体识别RAC驱动发夹DNA中的胞嘧啶-Ag
+
-胞嘧啶结构释放出Ag
+
,同时通过CHA有效促进多重CER发生,连续诱导CdTe QDs荧光猝灭,为RAC的高灵敏现场定量分析提供基础。验证了该方法的实际可行性,包括稳定性、可重复性以及优于非CHA系统的性能。该方法不仅可以实现不同含量RAC的裸眼区分,而且具有通用性,只需修改体系中识别区域即可用于其他目标物分析。该研究有利于食品安全和环境健康领域的进展,为RAC及其他潜在类似化合物的定量分析提供了一种高效的工具。
The sensitive and rapid detection of clenbuterol ractopamine(RAC) is of great significance for food safety and human health. However,the traditional RAC analysis methods often involve complex instruments and professional operators,and it is difficult to achieve portable field detection. Using the cation exchange reaction(CER) between cadmium telluride quantum dots(CdTe QDs) and silver ion(Ag
+
),and the specific recognition properties of aptamer(Apt),combined with enzyme-free hairpin assembly(CHA) of signal amplification,a low-cost,high-sensitivity field quantitative detection method for ractopamine was proposed. The detection limit was a
s low as 2.3 pmol·L
-1
,significantly lower than the maximum residue limit(MRL) recommended by the Codex Alimentarius Commission. The key of this method was that the aptamer recognizes RAC to drive cytosine-Ag
+
-cytosine structure in hairpin DNA to release Ag
+
,while effectively promoting the occurrence of multiple CERs through CHA and continuously inducing fluorescence quenching of CdTe QDs,which provided a basis for highly sensitive field quantitative analysis of RAC. The practical feasibility of the method was verified,including its stability,repeatability,and performance over non-CHA systems. This method can not only distinguish different contents of RAC with open eyes,but also has universality. It can be used to analyze other target objects only by modifying the identification region in the system. This study is conducive to the advancement of food safety and environmental health,and provides a highly efficient tool for quantitative analysis of RAC and other potentially similar compounds.
He F . Analysis of Ractopamine by Magnetic Separation Immunosensor Based on Signal Amplification Technology . Handan : Hebei University of Engineering (贺锋. 基于信号放大技术的磁分离免疫传感器检测莱克多巴胺的分析方法研究. 邯郸:河北工程大学), 2023 .
He F , Wang H J , Li T F , Du P F , Wang W T , Wang S J , Liu R B , Ma Y L , Hu P , Tan T Y , Han Q . Chin. J. Anal. Chem. (贺锋,王海洁,李腾飞,杜鹏飞,王维婷,王守经,柳尧波,马艳丽,胡鹏,谭天宇,韩晴. 分析化学), 2023 , 51 ( 1 ): 102 - 111 .
Peng C Y , Zhang S W , Feng Y , Wu C L , Zhao X J , Song G D . J. Instrum. Anal. (彭传云,张少文,冯勇,吴春来,赵晓洁,宋根娣. 分析测试学报), 2021 , 40 ( 8 ): 1177 - 1183 .
Wang X Y , Liu Z , Guo R T , Ding Z Y , Lü Y J , Kong X F . Phys. Test. Chem. Anal.:Chem. Anal. (王小燕,刘峥,郭容婷,丁智远,吕奕菊,孔翔飞. 理化检验-化学分册), 2023 , 59 ( 11 ): 1357 - 1364 .
Duan N , Ding L Y , Deng B , Yang S X . Chin. J. Anal. Chem. (端宁,丁乐媛,邓兵,杨绍祥. 分析化学), 2024 , 52 ( 6 ): 809 - 827 .
Guan Y . Biosensors Based on DNA Walkers and Ion Exchange Signal Amplification Strategies for the Detection of Toxins and Disease Markers . Kunming : Yunnan Normal University(管燕. 基于DNA步行器及离子交换信号放大策略的生物传感器用于毒素和疾病标志物的检测. 昆明:云南师范大学) , 2023 .
Yang D W , Tang Y G , Miao P . Trends Anal. Chem. , 2017 , 94 : 1 - 13 .
Bi S , Yue S Z , Zhang S S . Chem. Soc. Rev. , 2017 , 46 : 4281 - 4298 .
Luo Y L , Liu X , Gao H T , Li Y , Xu J Y , Shen F , Sun C Y . J. Nanosci. Nanotechnol. , 2016 , 16 ( 1 ): 548 - 554 .
Yang S Y , Yang R X , He J Y . Foods , 2023 , 12 ( 4 ): 842 .
Pei Y Q , Zhang J , Wu K , Deng A P , Li J G . Analyst , 2020 , 145 : 6171 - 6179 .
Fu X C , Dong W , Liu C , Han C , Huang C Z . RSC Adv. , 2022 , 12 : 10911 - 10914 .
Huang Y S , Ye X S , He Y Y , Huang T , Chen T . Foreign Anim. Sci. ( Pig and Poultry )(黄永生,叶夏声,何玉榆,黄婷,陈彤 . 国外畜牧学(猪与禽)) , 2022 , 42 ( 4 ): 85 - 88 .
Rajkumar M , Li Y S , Chen S M . Colliod Surface B , 2013 , 110 : 242 - 247 .
Orooji Y , Asrami P N , Beitollahi H , Tajik S , Alizadeh M , Salmanpour S , Baghayeri M , Rouhi J , Sanati A L , Karimi F . Food Measure , 2021 , 15 : 4098 - 4104 .
0
浏览量
28
下载量
0
CSCD
关联资源
相关文章
相关作者
相关机构