The Variability of the Essential Oil Composition of WildLedum palustreL. Shoots During Vegetation Period

Composition of Seed Essential Oils of Rhododendron tomentosum

“…The chemical composition of the essential oils of all or separated aerial parts (mostly shoots) of Rh. tomentosum has been studied in Europe [2][3][4][5][6][7][8][9][10][11][12][13][14][15], the Far East and Siberia [16][17][18], and Asia [19][20][21][22] (Table 1). Other studies were focused on the isolation and identification of new compounds from the plant, such as 7-elemol, lepalol, lepalin, lepaloks, lepakson and lebaikon [16,17,[23][24][25][26].…”

Diurnal Effects on Chinese Wild <i>Ledum palustre</i> L. Essential Oil Yields and Composition

“…Shevchenko [31] found the diurnal maximum and minimum essential oil accumulation in Salvia sclarea to be at noon and at 3:00 AM, respectively. However, in a diurnal study with Rosa damascena Mill., Kumar et al [15] found the highest essential oil content at 04:00 AM and the lowest at 2:00 PM. Angelopoulou et al [19] reported that in Cistus monspeliensis L. leaves during the months of May, August, and February, oil yield was the highest at 6:00 PM, whereas in November, the oil yield was the highest at 12:00 PM.…”

“…Although the biosynthesis of secondary metabolites is controlled by genetic processes, it is also strongly affected by climatic conditions such as light, temperature, irrigation, soil and nutrition as well as the season and the time plant material is harvested [10]- [15]. Previous studies found significant impact of diurnal changes on essential oil yield and composition on a number of crops such as basil (Ocimum gratissimum L.) [16], Pelargonium sp.…”

Natural sesquiterpenoids

“…404 The carabrane sesquiterpene 513 has been obtained from Carpesium faberi. 407 A total synthesis of entledol has been reported. 405 and Porella chilensis.…”