Essential Oil Constituents ofArtemisia annuaDuring Different Growth Periods at Monsoon Conditions of Subtropical North Indian Plains

Composition ofArtemisia AnnuaEssential Oil Obtained from Species Growing Wild in Bulgaria

“…Malik et al (2009) (7) have found different composition of the essential oil when the plant was treated with Azospirillum, basal n, P, K and S and Glomus. Bagchi et al (2003) (2) have found out that the different growth periods at which the sample is collected also affect the essential oil composition. Another factor which affects the composition of the essential oil is the drying temperature (6).…”

Influence of transplanting time on essential oil yield and composition in Artemisia annua plants grown under the climatic conditions of sub‐tropical north India

“…6 This time, Artemisia ketone was also found to be present in negligible amounts, as reported in our previous observation. 5 The composition of the oil of A. annua populations raised by transplanting during different months was found to be variable in the percentage occurrence of various components when grown under the climatic conditions of the northern Indian plains and harvested at the full-bloom stage. The high camphor content in A. annua plants used for the present study may be due to its genotype.…”

“…In the subtropical plain conditions of North India, camphor was reported to be as high as 44% during flowering time in the February-transplanted plants. 5 Some genotypes of A. annua from Italy and Hungary were also reported to contain camphor as a major component. 6 In the majority of analyses on the oil of A. annua, however, artemisia ketone has been reported as a dominant compound; other major components reported were α-pinene, 1,8-cineol, β-caryophyllene, camphene, sabinine and α-guaiene.…”

“…3 Although A. annua has gained considerable importance due to the presence of a sesquiterpene lactone artemisinin, which was found effective against chloroquine-resistant malarial parasite (Plasmodium falciparum), 4 yet the essential oil of the plant is of no less importance, as it could become a good source of camphor, owing to its presence in high amounts. 5 However, for better oil yield and camphor recovery, it is important to know the optimal planting and harvesting time of the plant. In the subtropical plain conditions of North India, camphor was reported to be as high as 44% during flowering time in the February-transplanted plants.…”

The Effect of Different Harvest Stages on Chemical Composition and Antioxidant Capacity of Essential Oil from Artemisia annua L.

“…The main components of the essential oil from A. annua growing wild in Bulgaria were α-caryophillene (24.73%), α-cuvebene (13.53%), α-copaene (7.24%), α-selinene (8.21%), artemisia ketone (8.45%), and camphor (3.61%) (Tzenkova et al 2010). In the essential oil of A. annua plants cultivated in India, camphor (10.5-44.4%) was found to be the major constituent of oil instead of the usually dominant artemisia ketone (Bagchi et al 2003). According to Jain et al (2002), artemisia ketone (52.9%), 1.8-cineole (8.4%) and camphor (6.0%) were the major components.…”