Research themes
Chemical and functional characterization of algal biomass.
The study, funded by Eni S.p.A., aimed to analytically characterize dried algal biomass from commercial and experimental cultivations. The research focused on identifying methods for the compositional analysis of algal biomass with the characteristics of accuracy, precision, and reproducibility, with the aim of providing methodological guidance for evaluating the content of microalgae. Samples of the microalgae Chlorella, Spirulina, and Scenedesmus species were analyzed. A GC-MS method identified significant MUFA and PUFA content, as well as amino acids. UV-Vis and HPLC-DAD methods allowed for detailed characterization of carotenoids and chlorophylls, demonstrating high-value content. A GC-MS method in SIM mode was used to analyze the content of bisphenol A as a contaminant.
Lipidomic study: toxicity of the Aβ1-42 peptide on neuronal cells.
A lipidomic study was conducted to further investigate the toxicity of the Aβ1-42 peptide on neuronal cells. The project aimed to discover new lipid-based biomarkers that could arise from the interaction of the amyloid peptide with the cell membrane and could explain the neurotoxicity of neuroblastoma cells. Cells were treated with increasing concentrations of Aβ1-42 at different times, then lipid extraction was performed using a protein precipitation protocol with 2-propanol-water (90:10 v/v). LC-MS analysis of the samples was performed by an RP-UHPLC system coupled to a quadrupole time-offlight mass spectrometer in data-independent SWATH acquisition mode. Each lipid class profile in SH-SY5Y cells treated with Aβ1-42 was compared to that obtained for untreated cells to identify and relatively quantify some altered species in various lipid classes. This approach proved suitable for highlighting some peculiar lipid alterations that could be related to different Aβ1-42 aggregation species and for exploring the mechanisms of cellular response to toxic stimuli. The in-vitro model presented provided results that coincide with those in the literature obtained from lipidomic analysis of cerebrospinal fluid and plasma of AD patients.
Waste products from the agri-food sector to be valorized in the pharmaceutical, cosmetic, nutraceutical, and packaging industries for a green circular bioeconomy.
Food waste was valorized in terms of bioactive compounds by comparing its polyphenol content and antioxidant activity with commercially available final products, with the aim of exploiting them for the design and production of new nutraceutical, cosmetic, and pharmaceutical products.