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In Situ and Real Time Monitoring and Characterization of Pesticide Residues on and in Fresh Produce Using Sers

Investigators
He, Lili
Institutions
University of Massachusetts - Amherst
Start date
2015
End date
2018
Objective

The Overall Goal is to investigate the behaviors and fate of pesticides on and in fresh produce in situ and in real time.

Objective 1: Optimize the SERS methods for in situ and real time monitoring and characterization of multi-class pesticides on and in different fresh produce.

Objective 2: Monitor the pesticide residues on fresh produce over time and after postharvest washing.

Objective 3: Investigate the penetration and translocation of pesticides in fresh produce.

More information
Pesticide applications on fresh produce are strictly regulated and monitored due to their toxicities to human health. The overall goal of this proposal is to investigate the behaviors and fate of multi-class pesticides on and in fresh produce (i.e. apples, grapes, and spinach leaves). Innovative methods (i.e. surface enhanced Raman spectroscopy,SERS) will be developed and optimized for study surface and internalized pesticides, respectively. We will then use the method to monitor and characterize the pesticide residues on plant surfaces over time and after postharvest washing. We will also investigate the penetration and translocation of pesticides in fresh produce. The objectives outlined are consistent with the call of Program Area Priorities (Code - A 1331) to "Elucidate physical or molecular mechanisms that allow chemicals to internalize into fresh produce" and "Investigate the fate of foodborne hazards in or on fresh produce associated with produce processing;". The successful completion of this study will establish innovative methods to monitor and characterize pesticides on and in fresh produce, and gain knowledge on the behaviors and fate of pesticide residues on and in fresh produce. Understanding these processes will help us to develop a better strategy to apply pesticides and reduce pesticide exposures from food.
Funding Source
Nat'l. Inst. of Food and Agriculture
Project source
View this project
Project number
MASW-2015-05731
Accession number
1007558
Categories
Chemical Contaminants
Pesticide Residues
Commodities
Produce