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Influence of harvest time on the yield and composition of Artemisia annua essential oil in North Indian plains



Influence of harvest time on the yield and composition of Artemisia annua essential oil in North Indian plains



Journal of Medicinal & Aromatic Plant Sciences 24(2): 390-392



A field experiment was carried out at CIMAP, Lucknow during 1993-94 to find out the optimum harvesting time of Artemisia annua L. for maximum essential oil production. The herb yield, essential oil content and artemisia ketone content in the A. annua oil increased with the advancement of crop age, reaching the maximum at the time of full flowering. The maximum fresh herb (183 q/ha) and oil (49.4 kg/ha) yield with highest 62.5% artemisia ketone (the most abundant constituent) and lowest, 9.8% artemisia alchohol content were obtained from A. annua harvested at full flowering. The 1, 8-cineole content in essential oil was not influenced by harvest time. Harvesting of A. annua at full flowering stage is suggested for higher oil production with highest artemisia ketone and lowest artemisia alcohol content.

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