Beneficial Poisonous Plants and their Therapeutic Values in Coal Capital City of Dhanbad, Jharkhand, India

The main objective of this study is to provide an insight into selective poisonous medicinal plants used in various beneficial treatments for the safety of the human health and culture which are now ignored and vanishing from Dhanbad district. The chemical constituents and phytochemical screening of plant species were done in the laboratory for their suitability in curing various ailments. Standard methods were used for identifying chemical species such as protein, carbohydrates, flavonoids, alkaloids, saponins, tannins, terpenoids, glycosides etc. Screening of these species were done for the various plant parts by established procedures using various media such as aqueous, chloroform, methanol, ethanol etc. Minimum Inhibitory Concentration (MIC) of leaf extracts of Nerium oleander (N. oleander) in acetone was found to be 30 mg/l while it was 100 mg/l in aqueous extract. No microbial lethality was seen. In Thevetia peruviana (T. peruviana), the concentration. of secondary metabolites followed methanol>aqueous>chloroform sequence. Presence of saponin and phalobatannin were not reported. Only phenols were seen. The bacterial inhibition rate in Ricinus communis (R. communis) was found to vary from 60-100% in Escherichia coli, 72-100% for Staphylococcus aureus (S. aureus), fungal inhibition against Aspergillus niger (A. niger) from 58-100% and antioxidant activity against 2, 2 Diphenyl, 1-picryl-hadrazyl-hydrate (DPHH) only 4%. In this study therapeutic applications of three poisonous plants have been screened and selected for their use against various diseases once abundant in the coal city of Dhanbad, Jharkhand, India