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Articles by Hemen Sarma
Total Records ( 2 ) for Hemen Sarma
  Hemen Sarma , Amit Kumar Tripathi , Souravjyoti Borah and Devendra Kumar
  The study reports the ethnobotany and threats to wild edible plants in Assam province of India, which is considered as a mega-biodiversity centre under two important biodiversity hotspots viz., Indo-Burma and Himalaya. The people living in remote/forest area still depend upon to a great extent on the indigenous system of medicine/cultivation. Here, we summarize the information derived through meta-analysis and present an updated estimate of the wild edible, medicinal and threatened plant species that has been reported by wide variety of taxonomic groups. Out of 3895 plant species nearly 7.34% were used as wild vegetables, fruits and ethno-medicines. In over all, 286 edible wild plant species estimated belong to 93 families and 192 genera are hitherto unknown or less known to the world. Of these, 150 species were reported to be used in traditional system of medicine. The estimates revealed that as many as 27 species were in the list of red data book, CITIES and IUCN red list threat categories due to over exploitations and these plants need a strong conservation and protection management.. In the present investigation, the work that has been reported and the potential of ethno-botanical studies with particular reference to biodiversity conservation of the important wild edible plant species have been highlighted in study area.
  Aniruddha Sarma and Hemen Sarma
  Three native strains, identified as Staphylococcus sp., Acinetobactor lwoffii and Enterobacter agglomerans were isolated from crude oil contaminated field and the aim of this research was to select potential soil microbial strain that could be effective in the bioremediation of crude oil compounds. Crude oil degradation performed by the isolates incubated in the shake flask culture and analysis of the results address that Acinetobactor lwoffii, accelerated cleanup most effectively, degrading oil sludge by a total of 93.78% in compare to Staphylococcus sp. (17.39%) and Enterobacter agglomerans (16.49%). Furthermore enhanced biodegradation potential of the isolates were studied by adding Mn and Cu and results indicated that supplemented metal increased degradation of crude oil products. In the present study, three bacterial strains AS1, AS2 and AS3 were termed and isolated through long cultivation with crude oil as the single carbon source. The three strains were identified based on the morphology of their colonies with physiological and biochemical characteristics. In addition, the characterizations of soil where the presence of these strains were carried out. The total CFU count ranged from 2x106 to 6x106 and total viable bacteria at 32°C ranged from 2.2x103 to 5.6x103 in various soil sample collected in random from contaminated site. The strains had broad degradation capacities and the present remediation monitoring confirmed the effectiveness of Acinetobactor lwoffii has one of the potential native microbes for remediation of crude oil soil.
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