[Organochlorine pesticides in cows'milk supplemented with cotton waste in San Pedro, Colombia].
OBJECTIVE
Ascertaining the presence of organochlorine pesticides (OCPs) in raw milk from cows grazing on traditional cotton farms in San Pedro, Sucre, Colombia.


METHODS
48 samples were taken from three cattle farms; two of them used cotton seed and soca dietary supplement.OCP concentration was determined by gas chromatography (GC) using an electron capturedetector (µ-ECD).


RESULTS
100 % of the samples had some type of OCPs and Endrin, DDT and Aldrin pesticides hadthe highest concentrations (0.62, 0.59 and 0.52 µg/mL, respectively). Farms supplementing feed with soca cotton had the greatest OCP presence and concentration in milk samples compared to samples from farms which did not engage in this practice.


CONCLUSIONS
Although most OCPs have been banned in Colombia since 1986, residues are still being presented in raw milk samples tested from cottongrowing farms, thereby creating a public health risk for consumers.
Departamento de Biología, Facultad de Educación y Ciencias, Universidad de Sucre, Sincelejo, Colombia. maryluz282@gmail.com
Mariluz
M
Hernández
Jhon V
JV
Vidal
José L
JL
Marrugo
D000821:Animal Feed; D000818:Animals; D002417:Cattle; D002849:Chromatography, Gas; D003105:Colombia; D003368:Gossypium; D006843:Hydrocarbons, Chlorinated / Q000032:analysis*; D007306:Insecticides / Q000032:analysis*; D008892:Milk / Q000737:chemistry*; D010573:Pesticide Residues / Q000032:analysis*
D006843:Hydrocarbons, Chlorinated; D007306:Insecticides; D010573:Pesticide Residues