title: Evaluation of terrestrial plants extracts for uranium sorption and characterization of potent phytoconstituents.
abstract: Sorption capacity of four plants (Funaria hygrometrica, Musa acuminata, Brassica juncea and Helianthus annuus) extracts/fractions for uranium, a radionuclide was investigated by EDXRF and tracer studies. The maximum sorption capacity, i.e., 100% (complete sorption) was observed in case of Musa acuminata extract and fractions. Carbohydrate, proteins, phenolics and flavonoids contents in the active fraction (having maximum sorption capacity) were also determined. Further purification of the most active fraction provided three pure molecules, mannitol, sorbitol and oxo-linked potassium oxalate. The characterization of isolated molecules was achieved by using FTIR, NMR, GC-MS, MS-MS, and by single crystal-XRD analysis. Of three molecules, oxo-linked potassium oxalate was observed to have 100% sorption activity. Possible binding mechanism of active molecule with the uranyl cation has been purposed.
authors.affiliation: a Natural Product Chemistry and Process Development Division, CSIR-Institute of Himalayan Bioresource Technology , Palampur , Himachal Pradesh , India.
authors.forename: Sunita
authors.initials: S
authors.lastname: Sharma
authors.affiliation: a Natural Product Chemistry and Process Development Division, CSIR-Institute of Himalayan Bioresource Technology , Palampur , Himachal Pradesh , India.
authors.forename: Bikram
authors.initials: B
authors.lastname: Singh
authors.affiliation: b Radiochemistry Division, Bhabha Atomic Research Centre , Mumbai , India.
authors.forename: S K
authors.initials: SK
authors.lastname: Thulasidas
authors.affiliation: b Radiochemistry Division, Bhabha Atomic Research Centre , Mumbai , India.
authors.forename: Madhuri J
authors.initials: MJ
authors.lastname: Kulkarni
authors.affiliation: b Radiochemistry Division, Bhabha Atomic Research Centre , Mumbai , India.
authors.forename: V
authors.initials: V
authors.lastname: Natarajan
authors.affiliation: b Radiochemistry Division, Bhabha Atomic Research Centre , Mumbai , India.|c Department of Energy Science, Sungkyunkwan University , Suwon , Korea.
authors.forename: Vijay K
authors.initials: VK
authors.lastname: Manchanda
mesh_terms: D000327:Adsorption; D001673:Biodegradation, Environmental; D019068:Bryopsida / Q000378:metabolism; D006368:Helianthus / Q000378:metabolism; D028521:Musa / Q000378:metabolism; D009149:Mustard Plant / Q000378:metabolism; D010944:Plants / Q000378:metabolism*; D012990:Soil Pollutants, Radioactive / Q000378:metabolism*; D014501:Uranium / Q000378:metabolism*
chemical_list: D012990:Soil Pollutants, Radioactive; D014501:Uranium
keywords: mannitol; potassium oxalate; sorbitol; sorption capacity; terrestrial plants; uranium