Modelling the pesticide transfer during tea and herbal tea infusions by the identification of critical infusion parameters.
Food Chem
; 429: 136893, 2023 Dec 15.
Article
in En
| MEDLINE
| ID: mdl-37480773
ABSTRACT
Pesticide residues in tea and herbal tea often exceed EU maximum residue limits. Consideration of the transfer of pesticides from the leaves (called transfer factors) to the brew is essential to assess the associated risk. This study identified infusion parameters influencing the transfer behaviour of 61 pesticides and elaborated a predictive model for pesticides with unknown transfer factors in black, green, herbal and flavoured teas. Tea type and the presence of flavours were the criteria that most influenced the pesticide transfer. Interestingly, infusion parameters that are individual and area dependent such as infusion time, temperature and water hardness, did not play a significant role. Beta regression models developed to characterise pesticide behaviour during infusion showed good predictions for most pesticides and revealed that log (P) was the main physico-chemical parameter to estimate the pesticide transfer. The transfer factors database and validated models are valuable tools for improving risk assessment.
Key words
Full text:
1
Database:
MEDLINE
Main subject:
Pesticides
/
Pesticide Residues
/
Teas, Herbal
Type of study:
Diagnostic_studies
/
Prognostic_studies
/
Risk_factors_studies
Language:
En
Journal:
Food Chem
Year:
2023
Type:
Article