Curcuma amada Roxb. (Zingiberaceae), commonly called as amba ada or mango ginger, is an important aromatic plant having both medicinal and culinary properties. In the present investigation, an attempt has been made to select high essential oil yielding germplasm among C. amada accessions collected from different regions and to evaluate its antioxidant as well as antimicrobial activities. Out of 20 accessions analyzed, Ca17 showed highest oil yield (1.35 ± 0.036%), while Ca10 accession showed lowest yield (0.12 ± 0.015%) in rhizome oil. Gas chromatography and mass spectrometry analysis revealed 56 bioactive compounds identifying myrcene (67.59–72.97%), (Z)-(Z)- Geranyl linalool (4.3–7.79%), (Z)-(E)-Geranyl linalool (4.05–7.23%), β-ocimene (2.9–6.33%), and β-pinene (1.23–4.82%) as the dominant compounds. The antimicrobial activity of the essential oil of C. amada was tested against four different bacteria, in which Ca17 was found to have good to moderate antimicrobial activities against all the tested microorganisms. Further, the antioxidant activity of all the accessions were also evaluated, in which Ca17 showed considerable antioxidant property with IC50 value 32.05 μg/mL. C. amada, being an untapped plant known for its morphological resemblance with ginger and mango-aroma and having antimicrobial and antioxidant properties, could serve as a good source of bioactive compounds having food additive properties. Based on these results, it could be suggested that C. amada’s rhizome oil could be used for food and pharmaceutical applications as a bioresource of antioxidants and antimicrobials
Key words: Curcuma amada, essential oil, GC-MS, antimicrobial activity, antioxidant activity
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