title: Supplemental ultraviolet-B induced changes in essential oil composition and total phenolics of Acorus calamus L. (sweet flag).
abstract: The effect of supplemental UV-B radiation (sUV-B) was evaluated on the essential oil contents of sweet flag (Acorus calamus L.), a medicinal plant grown under natural field conditions. After the emergence of two leaves, plants were exposed to sUV-B radiation of 1.8 kJ m(-2) above the ambient level of UV-B. The level of essential oil and phenol contents increased with exposure to sUV-B. Exposure of sUV-B resulted in significant increase in p-cymene and carvacrol contents of essential oil. Decrease in the level of major component beta-asarone due to sUV-B treatment is of prime importance, because of its toxicological concern to human health.
authors.affiliation: Lab of Air Pollution & Global Climate Change, Department of Botany, Banaras Hindu University, Varanasi 221005, India.
authors.forename: Rima
authors.initials: R
authors.lastname: Kumari
authors.forename: S B
authors.initials: SB
authors.lastname: Agrawal
authors.forename: Suruchi
authors.initials: S
authors.lastname: Singh
authors.forename: N K
authors.initials: NK
authors.lastname: Dubey