Identification of high-value bioactive constituents in Northern European willow varieties: S.X. Dasyclados, Endeavour, Cheviot, Tora, Resolution, S. Purpurea, Terranova, endurance

• Main Authors: Ayman Hijazi, Italo Pisano, JAMES J LEAHY, WITOLD KWAPINSKI, Christopher R Johnson, JOHN PRENDERGAST
• Format: Other Non-Article Part of Journal/Newspaper
• Language: unknown
• Published: 2022
• Subjects: Chemical sciences; Willow; Bark; Bioactives; Polyphenols; Endeavour; Tora; Terranova
• Online Access: https://doi.org/10.34961/researchrepository-ul.21840636.v1; https://figshare.com/articles/journal_contribution/Identification_of_high-value_bioactive_constituents_in_Northern_European_willow_varieties_S_X_Dasyclados_Endeavour_Cheviot_Tora_Resolution_S_Purpurea_Terranova_endurance/21840636

Willow trees have maintained their place in medicine for many years as they are herbal source of various cures. Willow varieties are considered to contain a wide range of anti-inflammatory and anti-bacterial species such as salicylates and flavonoids. The current work is centred on the presence of high bioactive pharmaceutical constituents other than salicin such as flavan-3-ol catechin, salicortin, and other complex compounds, which contribute to the total medical value of willow extracts. To evaluate the distribution of these bioactives, bark, and wood fractions of 8 different willow varieties (S.X. Dasyclados, Endeavour, Cheviot, Tora, Resolution, S. Purpurea, Terranova, Endurance) were extracted using dispersive solid phase extraction and then analysed using LC-MS comprising a quadrupole time-of-flight spectrometer. Indeed, various high value constituents such as salicortin, catechin, triandrin, acacetin-5-O-xyloside, picein, apigenin-7-O-glucoside, vitexin-2-rhamnoside, luteolin7-glucoside, catechin gallate, and kaempferol as well as giberellic and 5-methoxysalicylic acid were detected in bark and wood fractions of the willow varieties 80:20 ethanol/water extracts.