International Conference

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    BIODEGRADATION OF POLYTHENE BAG USING BACTERIA ISOLATED FROM SOIL
    (Kongunadu Arts and Science College, Coimbatore, 2018-08-07) Jeeva Dharshni S; Kanchana M
    Plastic are one of the most widely used materials and in most cases, they are designed to have long life time. Though plastics have become cosmopolitan, now days, they are very hazardous and should be disposed properly. Land filling, incineration and recycling are the most common methods employed for the disposal of plastics with the side effects of environmental and health hazards. So, biodegradation will be the right choice for the disposal of plastic wastes. Soil samples from the compost yard have the rich consortia of biodegrading microbes. These samples were inoculated into nutrient agar medium with plastic as the sole carbon source for the isolation of the plastic degrading strains. Characterization of bacterial strains was done based on morphological, biochemical and molecular characterization. The process of biodegradation was observed at regular interval for 30 days in a synthetic medium containing LDPE films. The bacterial isolates,Actinomycetes sp, Bacillus mycoidesis, Bacillus subtilis,Brevundimonasdiminuta, Pseudomonas putidaandPseudomonas stutzeriwere able to reduce the weight of the polymer up to 17%,14%, 30%, 22% 29% and 25% respectively. Degradation was monitored by observing weight loss and changes in physical structure by Fourier Transform Infrared (FTIR) Spectroscopy
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    GREEN SYNTHESIS OF SILVER NANOPARTICLES USING MESUAFERREALINN FLOWER BUDS AND EVALUTION OF THEIR ANTI MICROBIAL ACTIVITIES
    (KSG college of Arts and Science, Coimbatore., 2018-08-11) Jeeva Dharshni S; Gomathi S; Sujithra V; Geetha M; Kanchana M
    Green synthesis of nano particles is an emerging branch of nano technology. There is an increasing commercial demand for nano particles due to their wide applicability in various areas, such as electronics, catalysis, chemistry, energy and medicine. Metallic nano particles are traditionally synthesized by wet chemical techniques, where the chemicals used are quite often toxic and flammable. In contrast the current study describes a cost effective and environment friendly technique for green synthesis of silver nano particles from 1mM. AgNo3 solution through the extract of species flower bud. Nano particles were characterized by using UV-Vis absorption spectroscopy, SEM analysis and elementary analysis, showed the average particle size of 46nm-101nm in chloroform extract and 37nm-66nm in ethanol extract as well as revealed their spherical and cubic structures respectively. Biologically synthesized nanoparticles were found to be highly antimicrobial against different multidrug resistant human pathogens