Phytochemical profile of three Ballota species essential oils and evaluation of the effects on human cancer cells.
- Rigano D et al (2017).
- Nat Prod Res.
- PubMed:
- 27189840
This study aimed to investigate the role of anthocyanins in the anthers of three Populus species found in the Iberian Peninsula. The researchers hypothesized that the anthocyanins might act as photoprotectors, shielding pollen grains from excessive sunlight. The study found that the degree of pilosity of the bracts was related to the levels and types of anthocyanins in the anthers, which may support the photoprotective role proposed for them. Anthocyanins were also found to be useful as chemotaxonomic markers, with qualitative and quantitative differences detected among the samples. Hierarchical Cluster and Principal Components Analyses revealed intraspecific differences among samples, pointing to different clones or varieties of the same species.