The results show the validity and extraction efficiency of simple and low-cost methods compared to the more sophisticated and expensive ones [16]. In the context of compounds with beneficial effects on health, prebiotics are non-digestible substances of food origin useful for the growth and development of the intestinal microbiota, the mass of bacteria that lives in the digestive system of the human body with important safeguured functions from harmful bacteria. Over the years, a lot of information has been gathered on these compounds; however, there is no accessible and convenient information space to compare the results obtained. Starting from these premises, [PERSON] et al. present in their paper a database called the 'On-line Database of Researches on Activity of Prebiotics' (ODRAP), which contains information on both prebiotics and some probiotics. Access to the database is achieved through a special web interface, which allows one to open the web page to obtain information on the characteristics and activities of prebiotics, sort the data by species and genus of bacteria, chemical nature or source of prebiotics and other parameters [17]. The bioactive compounds contained in some plant matrices, among the various biological activities, can be used as natural dyes and antioxidants. For example, the extraction of compounds from a root vegetable, such as red beetroot is of great interest to the meat industry, in order to limit the number and quantity of synthetic additives and increase the shelf life of the various products. In fact, beetroot contains dyes (betalains), antioxidants (betalains and phenolic compounds) and preservatives (nitrates). Therefore, in a review by [PERSON] et al., the main biologically active compounds present in beetroot, the implications and health benefits of this precious vegetable are reported [18]. As repeatedly reiterated, plant matrices are a source of bioactive compounds, but while much research has been conducted on their derivation from fruits and flowers, to date, research conducted on European trees and shrubs has been scarce. Starting from these premises, [PERSON] et al. conducted research to systematize the results of literature studies on the knowledge of phenolic compounds present in trees and shrubs native to Central Europe. In this way, it was possible to provide information on this topic and highlight current knowledge gaps [19]. As is known, to obtain the bioactive compounds it is necessary to apply a solid-liquid extraction technique to isolate the extractable material containing the phytocompounds present in the most varied plant-type matrices. An example is the medicinal plant sector, from which active ingredients with pharmacological properties are obtained for the treatment of certain human pathologies and diseases. For example, chrysoeriol, a flavone synthesized in several plant species, is a phytocompound with numerous effects. Indeed, some investigations showed that this molecule has a broad range of biological potentials, including anticancer, anti-inflammatory, antidiabetic, antihyperlipidemic, antibacterial, antifungal, anti-osteoporosis, anti-insecitcidal, antioxidant, and neuroprotective activities. In a paper by [PERSON] et al., the in vitro and in vivo pharmacological properties of chrysoeriol are highlighted and information on its pharmacokinetics is provided [20]. Related fields for the use of phytocompounds are that of herbal medicine, cosmetics and perfumery which obtain the main ingredients of their preparations by subjecting parts of plants, such as flowers, leaves, roots, etc. to solid-liquid extraction [21; 22]. For a while now, even in the food sector, greater attention has been paid to production processes with a constant search for new technologies with the aim of improving production efficiency, guaranteeing greater safety and quality, allowing the reduction of energy costs for the production of food with beneficial effects on health [23].