Pyrrolizidine alkaloids in herbal teas for infants, pregnant or lactating women

作者：Maedge Inga; Cramer Luise; Rahaus Ines; Jerz Gerold; Winterhalter Peter; Beuerle Till^*

来源：Food Chemistry, 2015, 187: 491-498.

DOI：10.1016/j.foodchem.2015.04.067

• Pyrrolizidine alkaloids
• HPLC-ESI-MS/MS
• Stable isotope labeled standard
• Herbal tea
• Infants
• Pregnant and lactating women

A general contamination of tea with pyrrolizidine alkaloids (PA) has just become known. Here, we report the application and modification of a new HPLC-ESI-MS/MS sum parameter method to quantitate PA content of herbal teas intended for infants, pregnant and lactating women. Using p-toluenesulfonyl isocyanate for derivatization and a stable isotope labeled internal standard, the total retronecine-/heliotridine-type PA content of the samples is expressed in form of a single sum parameter (retronecine equivalents: RE). The new methods were applied to analyze 44 tea samples for such consumer groups. Thirty eight products (86%) were tested PA positive showing PA concentrations ranging from 0 to 391 mu g RE/kg (average: 50 mu g RE/kg). The dataset is discussed in the view of the current discussion on PA in the food chain with special focus on those particular vulnerable consumer groups.

• 出版日期2015-11-15