An official website of the United States government.

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

Alternative Solvent Systems and Techniques for Food Analysis

Investigators
King, Jerry
Institutions
USDA - Agricultural Research Service
Start date
1998
End date
2001
Objective
To apply new solvent systems and develop analytical methodology for the analysis/cleanup of food samples containing antibiotics, pesticides, and associated lipid materials; utilizing agents that are environmentally benign and contribute to laboratory safety.
More information
The role of compressed fluids and liquids under pressure will be expanded to use binary gas mixtures, compressed water, and similar solvents for the extraction, cleanup of samples and reaction of food matrices for chemical residue analysis. Binary fluid mixtures, consisting of compressed carbon dioxide and other fluids, will be utilized to selectively extract pesticides devoid of interfering coextractives which require cleanup of the resultant extract. Similarly, heated water under compression will be used to extract more polar target analytes, such as antibiotic residues of interest to the Food Safety & Inspection Service. The above media will be coupled with enzyme immunoassay, plate bioassay methods, and solid phase extraction (including disk and microfibre formats) to develop definitive methods for the detection and quantitation of drug and pesticide moieties in meats and related food matrices. Reaction chemistries, where appropriate, will be specifically used with the above media for improving detection.
Funding Source
Agricultural Research Service
Project number
3620-42520-001-00D
Accession number
402826
Categories
Chemical Contaminants
Veterinary Drug Residues
Pesticide Residues
Parasites
Natural Toxins
Viruses and Prions
Bacterial Pathogens