Journal
JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
Volume 68, Issue 31, Pages 8447-8454Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acs.jafc.0c02636
Keywords
plant growth regulators; cherry tomatoes; Lycopersicon esculentum Mill.; solid-phase extraction; high-performance liquid chromatography
Funding
- National Natural Science Foundation of China [21575033]
- Natural Science Foundation of Hebei Province [B2018201270, H2019201288]
- Talent Engineering Foundation of Hebei Province [A201802002]
- Postgraduate's Innovation Fund Project of Hebei Province [CXZZBS2019024]
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The overuse of plant growth regulators (PGRs) in agricultural products has gradually increased in recent years, resulting in hazardous effects on food safety and human health. For the first time, a sensitive, accurate, and low-cost analytical method involving improved solid-phase extraction coupled with high-performance liquid chromatography was developed to determine trace PGRs in cherry tomatoes. Thereafter, the extraction mechanism and conditions were elucidated. Under optimized conditions, good linearity (0.04-400 ng g(-1); r >= 0.9996) and lower limits of detection (0.005-0.006 ng g(-1)) were observed. The recoveries were 81.4-90.1%, with relative standard deviations of <= 6.7% (three levels). Finally, the developed method was successfully used to detect trace PGRs in cherry tomatoes. The results illustrated that this sensitive method shows great potential for application to monitor trace PGRs in agricultural products and, thus, provide technical support for food safety and public health.
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