MS/MS analyses of bergamot juice extracts were performed
with an API 3000 triple quadrupole mass spectrometer (Applied
Biosystems, Toronto, Canada) equipped with a Turbo Ion Spray
source working in the negative ion mode. The analyses were performed
using the following settings: drying gas (air) was heated
to 400 C, and the capillary voltage (IS) was set to 4000 V. To obtain
identifying information on the metabolites, informationdependent
acquisition (IDA) was used. Acquisition (IDA) was
carried out using the range m/z 50–1100 with a cycle time of
0.5 s and a step size of m/z 0.2; the collision energy was set to
60 V. Chromatograms were recorded at 256 nm. Identified compounds
were analyzed by MRM (Multiple Reaction Monitoring).