Chemical Signatures of Essential Oil: An Alternative Tool for the Identification of the Species of Syzygium Gaertn. of Tamil Nadu
DOI:
https://doi.org/10.36808/if/2020/v146i9/154914Keywords:
Chemotaxonomy, Essential oil, GC-MS, Hydrodistillation, Myrtaceae.Abstract
The taxonomic information ofMyrtaceae oflndia is scanty and incomplete and no cumulative information available on systematic account. Also, very few research reports alone exist at a regional level in incomplete form. However, lack ofaccess to type materials, misidentification ofspecimens andmisapplication ofnames orconfusion ofsynonyms, leads to the misunderstanding oflarge numberofspecies. This confusion is particularly acute with the genera like Eugenia L. and Syzygium Gaertn. due to a large number of accepted names and their synonyms for widespread species. Therefore, it is mandatory to prepare a detailed systematic account on the familyMyrtaceae oflndia fordocumentation and conservation. Moreover, special attempts have to be undertaken to resolve the problems in the identity of species ofEugenia L. and Syzygium Gaertn. Chemotaxonomy is the study deals with the classification and identification ofspecies based upon the composition ofchemical compounds. In Myrtaceae, terpenoids are the major chemical constituents along with steroids, alcohols, esters, phenols etc. The present study has attempted to isolate the essential oils of 2 0 species ofSyzygium Gaertn. and identify the phytoconstituents by GC-MS analysis. By the study, it has inferred that, almost, every species has its own specific key compound. The key compound of each species can be considered as an important tool for the identification ofSyzygium at the species level. The species with similarmorphology o r confusion on identity can be identified by it's own chemical constituents and no similar compounds identified in 2 or more species.References
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