Claim · model-written summary
Fresh violet-blue petals and crude extracts showed maxima at 547 and 577 nm and a shoulder near 620 nm.
- Taxon
- Saintpaulia ‘Thamires’t0
- Outcome
- absorption maximae0
- Value
- 547 and 577 nme0
- Qualifier
- shoulder near 620 nme0
Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleTreatmentComparatorSettingDirection
Verbatim
e0“two characteristic absorption maxima at 547 and 577 nm, with a shoulder near 620 nm, were observed”
t0“Saintpaulia ‘Thamires’”
Title
Three acylated anthocyanins and a flavone glycoside in violet-blue flowers of Saintpaulia ‘Thamires’
F. Tatsuzawa; M. Hosokawa; N. Saito; et al. South African Journal of Botany 2012. doi:10.1016/j.sajb.2011.12.001
Other claims from this paper (8)
- Observation Three new acylated anthocyanins were isolated from Saintpaulia flowers.
- Observation The new anthocyanins were characterized as derivatives of malvidin, peonidin and pelargonidin.
- Observation Malvidin acetylrutinoside glucoside was the dominant pigment in the violet-blue flowers.
- Observation The isolated flavone was identified as apigenin glucuronopyranoside.
- Observation The isolated malvidin pigment and its deacylated form had one absorption maximum at 535 nm.
- Intervention effect Addition of apigenin glucuronide changed malvidin pigment color from violet to violet-blue.
- Observation The violet-blue pigment solution showed two maxima at 547 and 577 nm and a shoulder near 620 nm.
- Mechanism The authors propose that intermolecular copigmentation produces the violet-blue flower color.