Abstract
Some diseases still need better therapeutic approaches, including the prevention of development. Natural resources are investigated with this purpose; among them, we decided to use an invasive plant as a main strategy. This will help in two ways: screening new compounds in flowers prevents the plant from causing widespread damage by controlling the dissemination and also obtains crude material for further applications. In the present study, flower extracts from Acacia dealbata Link harvested in Portugal were studied during three stages of flowering. Phenolic compounds were evaluated using HPLC/DAD and the total phenolics as the total flavonoids content was determined. The bioactivities screened were antioxidant potential, inhibitory activities of some enzymes (acetylcholinesterase, lipase and α-glucosidase) and, to complete the screening, the inhibition of microbial growth was determined against Gram-negative and Gram-positive bacteria, as well as for yeasts. The data obtained suggested that the hydroethanolic extracts gave good results for all these biological activities and varied according to the maturation status of the flowers, with the early stage being the most active, which can be related to the chalcones content. This new approach will lead to the possible control of the invasive plant and also future perspective research for therapeutic purposes.
Highlights
The present work reflects the preliminary study carried out with extracts of an invasive plant, Acacia dealbata L., which may be used in a win–win relationship, that is, as a raw material to supply bioactive molecules, while the harvest itself will contribute to controlling its invasiveness by decreasing the proliferation of this plant
Among the possible bioactivities to explore that are believed to be linked to the compounds expected to be in the Acacia extracts we chose, the acetylcholinesterase inhibitors (AChEIs) can be explored further for the treatment of dementia symptoms [1] or even to delay the disease
These results showed that Raman spectroscopy is a promising technique for and discriminating between flower raw materials to identify possible differences in the Concerning theofresults of the Principal component analysis (PCA) made with the spectral data biological activities their extracts
Summary
In drug discovery, screening for potential bio-active structures is often started with natural product extracts. The present work reflects the preliminary study carried out with extracts of an invasive plant, Acacia dealbata L., which may be used in a win–win relationship, that is, as a raw material to supply bioactive molecules, while the harvest itself will contribute to controlling its invasiveness by decreasing the proliferation of this plant. Among the possible bioactivities to explore that are believed to be linked to the compounds expected to be in the Acacia extracts we chose, the acetylcholinesterase inhibitors (AChEIs) can be explored further for the treatment of dementia symptoms [1] or even 4.0/). The current extracts used to slow the progression of many of these pathologies still have modest outcomes. Acacia species are aggressive invaders that affect ecosystem integrity worldwide [2]
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