Phytochemical Profiling, Isolation, Characterization and Quantification of Triterpenoids from Terminalia Arjuna: A...

Area of Science:

• Phytochemistry
• Pharmacognosy
• Medicinal Botany

Background:

• Terminalia arjuna is a medicinal tree renowned for its cardioprotective properties.
• Key bioactive compounds include arjungenin and arjunic acid, triterpenoids with significant therapeutic potential.
• Understanding phytochemical variability is crucial for effective utilization and conservation.

Purpose of the Study:

• To quantify arjungenin and arjunic acid in T. arjuna bark from diverse geographical locations.
• To analyze phytochemical variations among different populations using statistical methods.
• To identify high-yielding populations for pharmaceutical and nutraceutical applications.

Main Methods:

• Development and validation of a High-Performance Liquid Chromatography (HPLC) method for simultaneous quantification.
• Application of statistical analyses: Hierarchical Cluster Analysis (HCA), Principal Component Analysis (PCA), and ANOVA.
• Isolation and structural validation of arjunic acid using flash chromatography and NMR spectroscopy (1H-NMR, 13C-NMR).

Main Results:

• Significant variations in arjungenin and arjunic acid content were observed across the 16 T. arjuna populations.
• Highest concentrations of these triterpenoids were found in samples from Amangarh tiger reserve and Gorakhpur Forest division.
• Environmental factors significantly influence secondary metabolite biosynthesis, affecting yield and tannin content.

Conclusions:

• Phytochemical profiling reveals substantial variability in T. arjuna populations, influenced by geographical and environmental factors.
• Identification of superior populations provides a basis for targeted conservation and resource selection for medicinal applications.
• The validated HPLC method serves as a reliable tool for quality control and standardization of T. arjuna-derived products.