Escalation in food industries unctuous wastes has led to serious anthropogenic problems to the environment. Parallel to "green strategy", growing awareness in biological treatment emphasizes efficacy of enzymatic technology for bioremediation. Pertinently, researchers are in search for new lipase-lipid interaction for improved outcome. Rhodococcus species have documented inadequate evidences on lipase enzyme production. Consequent assessments on Rhodococcus isolates from Peninsular Malaysia have identified twelve promising strains as lipase producer. Interestingly, apart from usual lipolytic behaviour, Rhodococcus sp. exhibited significant level of lipase endogenously, while cryogenic grinding method effectively ruptured the cell. An isolate from petroleum-contaminated site, namely Rhodococcus UKMP-5M, projected the highest level of lipase specificity and has further been optimized. It was found out that the best specificity was apparent in acidic condition (pH 5) with 6% inoculum at 30• C for 72 hours of incubation. Due to high level of mycolic cell-surfactant developed in triacylglycerol supplements, cell lysis was employed with Triton X-100 detergent solubilisation. As a result, oil blend composed of various carbon-chain length fatty acids (composite 2) induces enzyme production extensively. Remarkably, R. UKMP-5M found to cater enzyme production without aid of inducer by nature, but additional carbon source like glucose represses lipase production. Further ability for biological treatment was revealed when the optimized R. UKMP-5M whole cell degraded waste cooking oil significantly by solubilizing fatty acids and commencing conversion into biomass. These qualities resemble practical new lipid-lipase biological lipid rich on-site treatment.
Salt pan ecosystem of Tuticorin was studied for the distribution of Phytoplankton in two condenser ponds in a particular station, where artemia population was very high. This was monitored for one year in two ponds. Physico chemical parameters were also studied. The population of Bacillariophyceae dominated during monsoon season. Chlorophyceae was high during summer. Phytoplankton density was correlated with artemia population. Artemia biomass was at a maximum during monsoon when the species The occurrence of Rodophyceae was noted in premonsoon season, while Erythrophyceae was recorded in summer.
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