GC- MS based chemical profiling of Alpinia manii Rhizome – An endemic and endangered plant from Andaman Islands, India

Abstract

Alpinia manii Roxb. is endangered and endemic to Andaman and Nicobar Islands, India. The present work aimed at phytochemical profiling of fresh rhizome by GC- MS method to find medicinally important constituents. GC- MS by Head- space and n- hexane extract of fresh rhizome was carried out to identify major volatile constituents. A total of 37 compounds were identified by both methods. Terpinoids are the major constituents. Major compounds identified by head space method are, β- Pinene (11.78%), β -Selinene (27.45%), Limonene-6-ol pivalate (15.79%), β Bisabolene (11.36) etc. Phenol 3, 5-bis (1 1-dimethylethyl) (24.74%) and β-Selinene (11.87%) are the major compounds identified in the n- hexane extract. GC- MS analysis of A. manii revealed the presence of many valuable and variable bioactive components like β- pinene, caryophyllene, α Humulene, β- Bisabolene etc which have potential role in treating various disease condition.