Essential Oil Constituents of Angelica glauca Edgew. Roots: An Endangered Species from Uttarakhand Himalaya (India)
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The roots of Angelica glauca Edgew., a high value critically endangered plant, were collected from two alpine Himalayan locations of Uttarakhand (India). The essential oils were obtained by hydro-distillation, analyzed by gas chromatography (GC) and gas chromatography–mass spectrometry (GC–MS) in order to determine the variation of concentration in their constituents. A total of 26 compounds were identified in both the oils, representing 97.7–98.2 % of total oil compositions. The major components of A. glauca oils were characterised as (Z)-ligustilide (40.6–53.0 %), (Z)-butylidene phthalide (20.7–32.8 %), (E)-butylidene phthalide (2.5–5.9 %) and (E)-ligustilide (2.1–2.3 %). Due to the higher relative area quantum of monomeric lactones (phthalides and ligustilides) in A. glauca populations (69.3–90.6 %) growing in Uttarakhand, there is a need to develop propagation protocol for mass multiplication and in situ and ex situ conservation.
KeywordsAngelica glauca Apiaceae Essential oil (Z)-ligustilide Himalaya
The authors gratefully acknowledge the Uttarakhand State Biotechnology Department (USBD), Govt. of Uttarakhand for financial support, Director, High Altitude Plant Physiology Research Centre (HAPPRC) and Prof. V. K. Jain, Vice Chancellor, Doon University for providing all the necessary facilities and valuable suggestions during the course of this study. Authors also thank VS Rawat, J Singh, P Singh and DP Gairola for assistance during field survey from different high altitude areas of Uttarakhand.
Conflict of Interest
The authors declare that they have no conflict of interest.
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