Proximate and Elemental Analysis of Three Medicinal Plants: Cuscuta reflexa, Cassia tora and Cassia fistula

Aim: The current study explores the proximate and elemental contents of three different medicinal plants, namely Cuscuta reflexa (whole plant), Cassia tora (stem) and Cassia fistula (seed pot) that have been grown in Bangladesh. Methodology: Macro (Na, K, Ca, Mg), micro (Fe, Cu, Mn, Zn, Ni, Cr) and heavy metal (Pb, Cd, As) elements, present in C. reflexa (Whole plant), C. tora (stem), and C. fistula (seed pod) were analyzed quantitatively by flame photometer and atomic absorption spectroscopy (AAS). Results: The minerals of the plants were found in substantial amounts (Na: 13763.75-16419.42 ppm, K: 6053.49-25864.92 ppm, Ca: 18912.16-2298.77 ppm, Mg: 1570.25-4602.23 ppm, Fe: 58.99-222.43 ppm, Cu: 3.16-11.61 ppm, Mn: 15.89-54.53 pm, Zn: 0.0367-50.2665 ppm, Ni: 0.9878-4.7186 ppm, Cr: 0.3279-0.8281 ppm, Pb: 0.3590-1.5030 ppm, Cd: 0.0016-0.0068 ppm and As: 0.0148-0.0675 ppm). Conclusion: It is evident that the investigated medicinal plants are enriched in some macro and micro nutrient, such as Na, K, Ca, Mg, Fe etc which are important for biological metabolism and human health. On the other hand the heavy metals are present in trace amount which indicate the plants are safe for medicinal uses.