PMID- 36359948
OWN - NLM
STAT- PubMed-not-MEDLINE
LR  - 20221117
IS  - 2304-8158 (Print)
IS  - 2304-8158 (Electronic)
IS  - 2304-8158 (Linking)
VI  - 11
IP  - 21
DP  - 2022 Oct 24
TI  - Copper-Modified Double-Emission Carbon Dots for Rapid Detection of Thiophanate 
      Methyl in Food.
LID - 10.3390/foods11213336 [doi]
LID - 3336
AB  - The detection of food safety and quality is very significant throughout the food 
      supply. Stable dual-emission copper-modified fluorescent carbon dots (Cu-CDs) 
      were successfully synthesized by a simple and environment-friendly hydrothermal, 
      which was used for the real-time detection of pesticide residues in agricultural 
      products. By optimizing the reaction conditions, Cu-CDs showed two emission 
      peaks, with the highest fluorescence intensities at 375 and 450 nm. The 
      structure, chemical composition and optical properties of Cu-CDs were 
      investigated by XRD, TEM and IR. The results showed that thiophanate methyl (TM) 
      could induce fluorescence quenching of Cu-CDs with no other ligands by the 
      electron transfer through pi-pi stacking. The synchronous response of the 
      dual-emission sensor enhanced the specificity of TM, which showed remarkable 
      anti-interference capability. The fluorescence quenching degree of Cu-CDs had a 
      good linear relationship with the TM concentration; the low detection limit for a 
      pear was 0.75 muM, and for an apple, 0.78 muM. The recoveries in the fruit samples 
      were 79.70-91.15% and 81.20-93.55%, respectively, and the relative standard 
      deviations (RSDs) were less than 4.23% for the pear and less than 3.78% for the 
      apple. Thus, our results indicate the feasibility and reliability of our methods 
      in detecting pesticide residues in agricultural products.
FAU - Yue, Xiaona
AU  - Yue X
AD  - College of Science & State Key Laboratory of Tea Biology and Utilization, Anhui 
      Agricultural University, Hefei 230036, China.
FAU - Zhu, Chunna
AU  - Zhu C
AD  - College of Science & State Key Laboratory of Tea Biology and Utilization, Anhui 
      Agricultural University, Hefei 230036, China.
FAU - Gu, Rongrong
AU  - Gu R
AD  - College of Science & State Key Laboratory of Tea Biology and Utilization, Anhui 
      Agricultural University, Hefei 230036, China.
FAU - Hu, Juan
AU  - Hu J
AD  - College of Science & State Key Laboratory of Tea Biology and Utilization, Anhui 
      Agricultural University, Hefei 230036, China.
FAU - Xu, Yang
AU  - Xu Y
AD  - College of Science & State Key Laboratory of Tea Biology and Utilization, Anhui 
      Agricultural University, Hefei 230036, China.
FAU - Ye, Sheng
AU  - Ye S
AD  - College of Science & State Key Laboratory of Tea Biology and Utilization, Anhui 
      Agricultural University, Hefei 230036, China.
FAU - Zhu, Jing
AU  - Zhu J
AD  - College of Science & State Key Laboratory of Tea Biology and Utilization, Anhui 
      Agricultural University, Hefei 230036, China.
LA  - eng
GR  - 21902157, 51702004/National Natural Science Foundation of China/
PT  - Journal Article
DEP - 20221024
PL  - Switzerland
TA  - Foods
JT  - Foods (Basel, Switzerland)
JID - 101670569
PMC - PMC9656121
OTO - NOTNLM
OT  - carbon quantum dots
OT  - copper
OT  - rapid detection
OT  - thiophanate methyl
COIS- The authors declare no conflict of interest.
EDAT- 2022/11/12 06:00
MHDA- 2022/11/12 06:01
PMCR- 2022/10/24
CRDT- 2022/11/11 01:13
PHST- 2022/08/12 00:00 [received]
PHST- 2022/09/24 00:00 [revised]
PHST- 2022/10/20 00:00 [accepted]
PHST- 2022/11/11 01:13 [entrez]
PHST- 2022/11/12 06:00 [pubmed]
PHST- 2022/11/12 06:01 [medline]
PHST- 2022/10/24 00:00 [pmc-release]
AID - foods11213336 [pii]
AID - foods-11-03336 [pii]
AID - 10.3390/foods11213336 [doi]
PST - epublish
SO  - Foods. 2022 Oct 24;11(21):3336. doi: 10.3390/foods11213336.