Black tea is the most commonly consumed beverage in the world. It is consumed by infusing the processed tea leaves in boiling water. Pesticides are widely used in tea production, and pesticides residues in tea brew are becoming a major issue. The goal of this work was to study 14 relevant pesticides leaching in black tea brew and to evaluate how a regular tea consumption contributes to pesticide daily intake in the population. The transfer behaviour of pesticides has shown a strong relationship with their physicochemical properties like water solubility (Ws) and octanol-water partition coefficient (Kow). The pesticides were extracted from the black tea brew using dichloromethane and then underwent cleanup through a Florisil column followed by gas chromatography coupled with electron capture detection (GCECD). The analytical method achieved good recoveries and reproducibility
PESTICIDE RESIDUES IN BLACK TEA BREW / Tarola, Anna Maria; Preti, Raffaella; Salvagni, Lucilla; Zanda, Stefania. - ELETTRONICO. - (2011), pp. 185-189. (Intervento presentato al convegno XXV CONGRESSO NAZIONALE DI SCIENZE MERCEOLOGICHE tenutosi a Trieste - Udine nel 26-28 settembre 2011).
PESTICIDE RESIDUES IN BLACK TEA BREW
TAROLA, Anna MariaPrimo
;PRETI, RaffaellaSecondo
;SALVAGNI, LUCILLAPenultimo
;ZANDA, StefaniaUltimo
2011
Abstract
Black tea is the most commonly consumed beverage in the world. It is consumed by infusing the processed tea leaves in boiling water. Pesticides are widely used in tea production, and pesticides residues in tea brew are becoming a major issue. The goal of this work was to study 14 relevant pesticides leaching in black tea brew and to evaluate how a regular tea consumption contributes to pesticide daily intake in the population. The transfer behaviour of pesticides has shown a strong relationship with their physicochemical properties like water solubility (Ws) and octanol-water partition coefficient (Kow). The pesticides were extracted from the black tea brew using dichloromethane and then underwent cleanup through a Florisil column followed by gas chromatography coupled with electron capture detection (GCECD). The analytical method achieved good recoveries and reproducibilityI documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
