Dahiya Jyoti, Kumar Deepak, Bolleddu Rajesh, Dutta Sreya, Mall Simmi, Hazra Kalyan, Mangal Anupam K.
Keywords:
n Saracan asocan , Catechin, HPLC, TLC-fingerprint, DPPH-TLC
Saraca asoca (Roxb.) Willd, is an indigenous medicinal plant of family Caesalpiniaceae. Different parts of this plant including seeds and pods, possess numerous biological activities on account of the presence of various phytoconstituents. Phenolic compounds, especially catechin, is the critical constituent responsible for the many pharmacological activity of Saraca asoca. The level of phytoconstituent in plant part depends upon the harvesting time. The bio-active contents changes during the development process of plant parts and is affected by many factors. Hence, the present study aims to find the best harvest time for pods and seeds by monitoring the changes in morphological, organoleptic and microscopic characters, followed by physiochemical analysis and chromatographic studies during development process. The chromatographic techniques like thin layer chromatography (TLC) and high-performance liquid chromatography (HPLC) were used to develop the fingerprint profile and determination of catechin content, respectively. The catechin content was also determined in stem bark to find any chance of substitution with seed and pod. The antioxidant potential was also determined by DPPH (2,2-diphenyl-1-picrylhydrazyl)-TLC method. It was found that seed (SD-4) and pod (PD-1) contained the maximum catechin content. This study provides the basis for collecting seed and pod at the best harvesting time. Also, the comparative studies for catechin content between stem bark, seed and pods suggest the use of seed and pods in place of stem bark but only at the proper age, as the excessive usage of stem bark may decrease the plants life expectancy by damaging the plant system.
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The authors are thankful to the Director General, CCRAS, New Delhi, India, for providing all the necessary facilities.