http://nopr.niscair.res.in/handle/123456789/724 Search the Channel search http://nopr.niscair.res.in/simple-search http://nopr.niscair.res.in/handle/123456789/750 Title: Biosorption of Cd²⁺ and Zn²⁺ ions in leachate with Enteromorpha compressa macroalga <br/> <br/>Authors: Sahmurova, Aida; Kose, Sati; Ozbas, Emine Elmaslar <br/> <br/>Abstract: This study presents biosorption of Cd²⁺ and Zn²⁺ ions from landfill leachate by using an alga of Enteromorrpha compressa type. Retention time of 60 min and pH 4 have been found optimum for biosorption of both metals. <br/> <br/>Page(s): 77-79 http://nopr.niscair.res.in/handle/123456789/749 Title: Performance of a mixed biodiesel fueled diesel engine <br/> <br/>Authors: Bora, Dilip Kumar; Das, L M; Babu, M K Gajendra <br/> <br/>Abstract: This study presents application of biodiesel produced from the mixture of polanga oil (Calophyllum inophyllum), karanja oil (Pongamia pinnata) and jatropha oil (Jatropha curcas) in CI engines and compares biodiesel performance and emissions characteristics with petro diesel. <br/> <br/>Page(s): 73-76 http://nopr.niscair.res.in/handle/123456789/748 Title: Botanical and phytochemical comparison of three Bergenia species <br/> <br/>Authors: Srivastava, Sharad; Rawat, Ajay Kumar Singh <br/> <br/>Abstract: Three species of Bergenia [B. ligulata (Wall) Eng., B. ciliata (Royle) Raizada and B. stracheyi Engl.] were evaluated for botanical, physicochemical and chemical studies. Botanical study of rhizomes revealed that B. ciliata has large number of starch grains; B. ligulata has maximum calcium oxalate crystals while B. stracheyi has a lesser amount of starch grains. Physicochemical studies showed that B. stracheyi had highest percentage of all physicochemical parameters (total ash 15.8, alcohol and water soluble extractives 13.83 and 16.83, sugar 5.5 and tannins 7.86), except starch and acid insoluble ash, which were highest in B. ciliata. A comparative HPTLC study was also carried out. <br/> <br/>Page(s): 65-72 http://nopr.niscair.res.in/handle/123456789/747 Title: Partial characterization and optimization of extracellular thermostable Ca²⁺ inhibited α-amylase production by Streptomyces erumpens MTCC 7317 <br/> <br/>Authors: Kar, S; Ray, R C <br/> <br/>Abstract: Culture parameters for optimum production of extracellular a-amylase by moderately thermostable Streptomyces erumpens MTCC 7317 isolated from a brick-kiln soil were found to be pH (6.0), temperature (50°C) and incubation period (36 h). Enzyme production was more in soluble starch (1%), beef extract (1%) and glycerol (0.02%) as compared to other carbon (1%: wheat flour, cassava starch, potato starch, cassava flour, etc.), nitrogen (1%: yeast extract, peptone, casein, ammonium chloride, etc.) and surfactant [0.02%: Cween (Tween) 20, Cween 40, Cween 60, Cween 80, sodium lauryl sulphate (SLS) and triton x 100] sources tested, respectively. Glycerol concentration (0.02 %) was most stimulatory in enzyme production. Addition of Ca²⁺ (even at 10 mM) inhibited a-amylase production. S. erumpens cells immobilized on sodium alginate beads produced more (9.0-23.4%) amylase as compared with free cells. Partially purified enzyme (by ammonium sulphate precipitation) had a molecular mass of 54,500 Da in native SDS-PAGE. <br/> <br/>Page(s): 58-64