PMID- 33368323
OWN - NLM
STAT- MEDLINE
DCOM- 20210723
LR  - 20210723
IS  - 1097-0010 (Electronic)
IS  - 0022-5142 (Linking)
VI  - 101
IP  - 10
DP  - 2021 Aug 15
TI  - Residue behavior and safety evaluation of pymetrozine in tea.
PG  - 4118-4124
LID - 10.1002/jsfa.11047 [doi]
AB  - BACKGROUND: Pymetrozine is a widely used pesticide. It is challenging to analyze 
      and difficult to manage due to the large gap in its global maximum residue limits 
      (MRLs) in tea. The development of a high-efficiency detection method for the 
      evaluation of the transfer of residual pymetrozine from tea plantations to tea 
      cups is therefore of prime significance. RESULTS: An analytical method for the 
      determination of pymetrozine residues in tea was established based on Cleanert 
      PCX solid-phase extraction. The average recoveries were 72.2-93.7%, with relative 
      standard deviations (RSDs) of less than 12%. The limits of quantification (LOQs) 
      were 0.005 mg.kg(-1) in fresh tea leaves and dry tea, and 0.00025 mg.L(-1) in tea 
      brew. Pymetrozine degraded rapidly in tea plants with a half-life (t(1/2) ) of 
      1.9 days in open tea plantations, and decreased by 9.4-23.7% in the green 
      tea-processing procedure, which was concentration dependent. The residual 
      pymetrozine levels in green tea collected at 6 and 21 days were below the MRLs in 
      China and EU at a dosage of 30 g a.i. ha(-1) , respectively. The leaching rates 
      of pymetrozine from dry tea to tea brew were 58.7-96.3%. Hazard quotient (HQ) 
      values of pymetrozine were significantly <100% when tea shoots were plucked in 
      6 days, which indicated a negligible risk to humans. CONCLUSION: This work allows 
      the determination of residual pymetrozine in tea and illustrates a low intake 
      risk with the use of pymetrozine in tea plantations. It could serve as reference 
      for further regulation consideration for maximum residue limits (MRLs). (c) 2020 
      Society of Chemical Industry.
CI  - (c) 2020 Society of Chemical Industry.
FAU - Yu, Huan
AU  - Yu H
AD  - Center of Agricultural Product Safety, Tea Research Institute, Chinese Academy of 
      Agricultural Sciences, Hangzhou, China.
AD  - Key Laboratory of Tea Biology and Resources Utilization, Ministry of 
      Agricultural, Hangzhou, China.
FAU - Sun, Hezhi
AU  - Sun H
AD  - Center of Agricultural Product Safety, Tea Research Institute, Chinese Academy of 
      Agricultural Sciences, Hangzhou, China.
AD  - Key Laboratory of Tea Biology and Resources Utilization, Ministry of 
      Agricultural, Hangzhou, China.
FAU - Wang, Xinru
AU  - Wang X
AD  - Center of Agricultural Product Safety, Tea Research Institute, Chinese Academy of 
      Agricultural Sciences, Hangzhou, China.
AD  - Key Laboratory of Tea Biology and Resources Utilization, Ministry of 
      Agricultural, Hangzhou, China.
FAU - Liang, Yabo
AU  - Liang Y
AD  - Center of Agricultural Product Safety, Tea Research Institute, Chinese Academy of 
      Agricultural Sciences, Hangzhou, China.
AD  - Key Laboratory of Tea Biology and Resources Utilization, Ministry of 
      Agricultural, Hangzhou, China.
FAU - Guo, Mingming
AU  - Guo M
AD  - Center of Agricultural Product Safety, Tea Research Institute, Chinese Academy of 
      Agricultural Sciences, Hangzhou, China.
AD  - Key Laboratory of Tea Biology and Resources Utilization, Ministry of 
      Agricultural, Hangzhou, China.
FAU - Yu, Jiawei
AU  - Yu J
AD  - Center of Agricultural Product Safety, Tea Research Institute, Chinese Academy of 
      Agricultural Sciences, Hangzhou, China.
AD  - Key Laboratory of Tea Biology and Resources Utilization, Ministry of 
      Agricultural, Hangzhou, China.
FAU - Yang, Mei
AU  - Yang M
AD  - Center of Agricultural Product Safety, Tea Research Institute, Chinese Academy of 
      Agricultural Sciences, Hangzhou, China.
AD  - Key Laboratory of Tea Biology and Resources Utilization, Ministry of 
      Agricultural, Hangzhou, China.
FAU - Zhang, Xinzhong
AU  - Zhang X
AD  - Center of Agricultural Product Safety, Tea Research Institute, Chinese Academy of 
      Agricultural Sciences, Hangzhou, China.
AD  - Key Laboratory of Tea Biology and Resources Utilization, Ministry of 
      Agricultural, Hangzhou, China.
FAU - Luo, Fengjian
AU  - Luo F
AD  - Center of Agricultural Product Safety, Tea Research Institute, Chinese Academy of 
      Agricultural Sciences, Hangzhou, China.
AD  - Key Laboratory of Tea Biology and Resources Utilization, Ministry of 
      Agricultural, Hangzhou, China.
FAU - Zhou, Li
AU  - Zhou L
AUID- ORCID: 0000-0002-7459-8194
AD  - Center of Agricultural Product Safety, Tea Research Institute, Chinese Academy of 
      Agricultural Sciences, Hangzhou, China.
AD  - Key Laboratory of Tea Biology and Resources Utilization, Ministry of 
      Agricultural, Hangzhou, China.
LA  - eng
GR  - CAAS-ASTIP-TRICAAS/Innovative Program of the Chinese Academy of Agricultural 
      Sciences/
GR  - 2016YFD0200207/National Key Research and Development Program/
GR  - LY18C160005/Zhejiang Provincial Natural Science Foundation/
PT  - Journal Article
DEP - 20210203
PL  - England
TA  - J Sci Food Agric
JT  - Journal of the science of food and agriculture
JID - 0376334
RN  - 0 (Pesticide Residues)
RN  - 0 (Tea)
RN  - 0 (Triazines)
RN  - F0G3V7874J (pymetrozine)
SB  - IM
MH  - Camellia sinensis/*chemistry
MH  - China
MH  - Food Contamination/*analysis
MH  - Pesticide Residues/*analysis
MH  - Tea/*chemistry
MH  - Triazines/*analysis
OTO - NOTNLM
OT  - brew
OT  - dissipation
OT  - processing
OT  - pymetrozine
OT  - residue
OT  - tea
EDAT- 2020/12/29 06:00
MHDA- 2021/07/24 06:00
CRDT- 2020/12/28 12:26
PHST- 2020/12/02 00:00 [revised]
PHST- 2020/09/07 00:00 [received]
PHST- 2020/12/26 00:00 [accepted]
PHST- 2020/12/29 06:00 [pubmed]
PHST- 2021/07/24 06:00 [medline]
PHST- 2020/12/28 12:26 [entrez]
AID - 10.1002/jsfa.11047 [doi]
PST - ppublish
SO  - J Sci Food Agric. 2021 Aug 15;101(10):4118-4124. doi: 10.1002/jsfa.11047. Epub 
      2021 Feb 3.