Peuplier (bourgeons) extrait CO2-to
Populus nigra L. – Leaf Buds, dried
By supercritical fluid extraction with natural carbon dioxide, no solvent residues, no inorganic salts, no heavy metals, no reproducible microorganisms .
The extract is rich in various classes of valuable compounds such as flavonoides or phenolic acids and their esters as well as oxygenated sesquiterpenes. The main volatile compounds determined by GC-MS are: Pinostrobin chalcone, Pinobaksin-5-methyl-ether, Pinocembrin, Ferulic acid, Coumaric acid, Hydroxycinnamic acid, Chrysin and Eudesmol.
The leaf buds of black poplar are used in traditional medicine mainly as anti-inflammatory, anti-pyretic and expectorant as well as wound-healing agent. The use is due to its antibacterial, antifungal, anti-inflammatory and antioxidant activity .*
Poplar buds are used to flavour herbal and bitter liqueurs. Therefore the extract is suitable for use in the alcoholic beverage industry.*
The poplar bud extract has antibacterial properties. It also has a soothing effect on the skin  . Therefore, the extract is well suited for use in skin care products, especially in products against oily skin and for skin cleansing.*
 P. Manninen, E. Häivälä, S. Sarimo, H. Kallio : Distribution of microbes in supercritical CO2 extraction of sea buckthorn (Hippophae rhamnoides) oils : Zeitschrift für Lebensmitteluntersuchung und -Forschung / Springerverlag (1997) 204: 202-205
 Piotr M. Kus, Piotr Okinczyc, Martina Jakovljevic, Stela Jokic, Igor Jerkovic : Development of supercritical CO2 extraction of bioactive phytochemicals from black poplar (Populus nigra L.) buds followed by GC–MS : Journal of Pharmaceutical and Biomedical Analysis 158 (2018) 15–27
 Marina Bährle-Rapp : Springer Lexikon: Kosmetik und Körperpflege, 4. Auflage : Springer-Verlag Berlin Heidelberg, 2012