IOSR-JESTFT   Volume-11 ~ Issue-7 ~ July 2017

Abstract: Seasonal dynamics of plankton diversity with reference to physico-chemical conditions in a fresh water pond was studied in temple pond at Thiruvottiyur, Chennai. Along with the physico-chemical parameters, water samples were also characterized for plankton community composition and density. The physico-chemical parameters also showed positive correlation with different zooplankton group. The water samples were analyzed for various physico-chemical factors. Totally 4 groups of zooplankton taxa were identified (Rotifera, Cladocerans, Ostracodans and Copepods). Zooplankton population density was maximum during summer (100 units/litre) and minimum (8.85 units/litre) during monsoon season.............

Keywords: Biodiversity, correlation, limnology, physico-chemical parameter, seasonal variations, zooplankton

[1]. Wetzell, R. G. (2001): Limnology: Lake and river Ecosystem, 3rd ed. Academic Press. ISBN –12-744760-1.
[2]. Patil, J.S. (2003) Diatoms in benthic and pelagic environment. In: Studies on ecology of diatoms. Ph.D. Thesis, University of Goa, India, pp. 47–50.
[3]. Mishra, N.K. (2005) Limnological study and plankton, Interim fish culture of Gurma Bundh Rewa District (M.P.). Thesis submitted A.P.S. University (M.P).
[4]. Smitha, P.G., K. Byrappa and S.N. Ramaswamy. (2007) Physico-chemical characteristics of water samples of bantwal Taluk, South-estern Karnataka, India. J. Environ. Biol., 28: 591-595.
[5]. Mulani, S.K., M.B. Mule and S.U. Patil. (2009) Studies on water quality and zooplankton community of the Panchganga river in Kolhapur city. J. Environ. Biol., 30: 455-459

Abstract: An experimental study was design to assess the nutritional quality of the Rosogolla available in Dhaka and Tangail region of Bangladesh. Sweetmeats were collected from a branded shop in Mirpur road and non-branded Rosogolla in Dhaka city area and a branded shop in pachani bazar and non-branded Rosogolla available at old bus-stand of Tangail district area. Quality of the Rosogolla was evaluated by chemical, microbial and hazard analysis. It was found that quality differed according to the manufacturers of Rosogolla. The chemical analysis score implies that moisture, fat, protein, total sugar and ash content varied significantly (p<0.05) among four different types of Rosogolla.............

Keywords: Sweetmeat, proximate composition, safety, Pathogenic bacteria, Heavy metal.

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Abstract: The release of azo dyes from various textile industries contributes a serious problem to the environment. The biological method of degrading these dyes is preferred over chemical and physical methods. In the present study, the potentiality of using Bacillus megaterium (MTCC 8371) for degrading four different azo dyes, namely methylene blue, methyl red, congo red, and orange –G, under optimum conditions were studied. Kirk's media was used for the degradation study and it was found out that the organism degraded the dye best in Kirk's media on the fifth day of incubation under neutral pH at 40oC. The degradation was estimated by using UV-VIS spectrophotometer. FTIR study was also carried out to find out the degraded compounds in the samples............

Keywords: Degradation, Kirk'smedium, Rf value, Methylene blue, Orange G, Congo Red, Methyl Red.

[1] Robinson, T.; McMullan, G.; Marchant, R. & Nigam, P. (2001). Remediation of dyes in textile effluent: a critical review on current treatment technologies with a proposed alternative. Bioresource Technology , 77:247-255
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[3] Khalid.A.,Arshad.M., and Crowley.D.E., 2008. Decolorization of azo dyes by Shewanella sp. Under saline conditions. Appl. Microbiol. Biotechnol.79:1053- 1059.
[4] L.K. Wang, Y.T. Hung, N.K. Shammas (Eds.), Physicochemical Treatment Processes, vol. 3 Humana Press, New Jersey (2004), pp. 141–198
[5] Jyotsna Kiran Peter and PriyamVandana, (2014) Congo red dye decolourization by partially purified laccases from Pseudomonas aeruginosa,International Journal of current microbiology and applied sciences, 3:105-115.

Abstract: Objective: To optimize bacteriocin producing medium and their characterization. Methods: Lactobacillus strain was isolated from marine water, Thirumullavaram beach, Kerala using MRS broth (Hi-Media, India) at 370C for 48 hrs. The isolate was identified by 16S rRNA sequencing and phylogenetic analysis. Optimization of physiological parameters and carbon, nitrogen sources. Produced crude bacteriocin and antagonistic characteristics of bacteriocin against Klebsiella pneumoniae MTCC535 were studied by agar well diffusion method. Bacteriocin stability in different temperature and enzyme.............

Keywords: antibacterial activity, bacteriocin, Klebsiella pneumoniae, Lactobacillus sp.

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