Öz
Rosa damascena Mill. is a very fragrant member of Rosaceae
family, exhibiting strong antioxidant and antimicrobial activity.
In this study, in vitro cell cultures from Rosa damascena Mill.
flower petals were established and the effects of precursor
L-phenylalanine, the elicitor methyl jasmonate and light/dark
treatments on the accumulation of characteristic rose volatile
compounds, tocopherols and β-carotene in addition to the
antibacterial activity of petal callus extracts were investigated
with Solid-Phase Microextraction Combined with Gas
Chromatography–Mass Spectrometry (GC–MS). The amount
of β-pinene increased by 236 times when 500 μM Phe was
added to the culture medium or under light treatment. Strong
antibacterial activity from petal callus extracts, up to 2.6-
fold compared to amikacin as well as original petal tissues,
was obtained under dark treatment for P. aeruginosa ATCC
27853 and S. aureus ATCC 25923. These results revealed that
petal callus extracts are sources of natural antioxidants and
antibacterial compounds.