e) 2021 - 79 Documents

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    ANALYSIS OF MICROBIAL ISOLATE FROM CONTAMINATED STREET FOOD WITH A POTENTIAL TO DEGRADE FOOD WASTE
    (Springer Science and Business Media Deutschland GmbH, 2021) Swathi Priya, S; Shanmuga Priya, C; Maria Shyla, J
    Contaminated food stuff is a potential source of bacteria with interest encompassing mirid attributes prompting their exploitation in assorted applications including environment domain like degradation of waste and discarded food. Street food has bacterial contamination like Salmonella sp., Staphylococcus aureus, Escherichia coli, Bacillus sp., Mostly non-significance bacteria are present in the street foods but still point to environmental contamination, in this work food samples were collected and serially diluted, isolated confirmed using different media. The isolation and identification process were done to know and characterise the bacteria via 16 s rRNA gene sequence and the DNA these further elucidated via BLAST search engine.
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    NOVEL QR CODE TAGGING SYSTEM FOR CAMPUS VEGETATION TO PROMOTE ECORESTORATION
    (Springer Science and Business Media Deutschland GmbH, 2021) Chahana, V E; Abirami, S; Karpagavalli, S; Arunpriya, C
    This work is an effort to create a means to establish environment sustainability through QR code tagging to trees. In this digital era, with increased usage of smartphones, tablets and the availability of these devices at a lower cost motivated us to adopt QR code tagging for obtaining detailed information about the flora collection available in our college. The objective of this work is to tag each tree in the campus with QR Code and enable the students aware of all the facts and data about the tree from its scientific name to its medicinal and pharmaceutic potential along with other interesting information, by scanning the QR code put up on the tree using their smartphone. These codes can be easily accessed by anyone in the college so that it will help the student, faculty, and others to gain knowledge about the plants available in the college campus.
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    IMPACT OF WATER QUALITY ON THE ANATOMICAL AND HISTOCHEMICAL CHARACTERISTICS OF EICHHORNIA CRASSIPES
    (Springer Science and Business Media Deutschland GmbH, 2021) MadhuBala, D; Narmathasri, J; Priyadarshini, V; Saranya, S; Sneka, S; TamilSelvi, K S
    Water hyacinth, a worst aquatic weed and also a right candidate for pollutant removal, was collected from four different locations. Our work aimed to study the influence of water quality over the anatomical and histochemical features of water hyacinth from four water bodies. A significant difference in the size of the plant, size of the different cells in leaf, petiole and root was observed between the locations. Histochemicals were localized in the hypodermal, cortical and in some cases, stellar region of parts of water hyacinth. Water quality parameters such as pH, temperature, chloride and sulphate content of the water samples varied between locations.
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    MICROBIOME ANALYSIS OF PESTICIDE CONTAMINATED SOILS ITS IMPACT ON THE MICROBIAL ISOLATES
    (Springer Science and Business Media Deutschland GmbH, 2021) Sowmiya Sri, S; Suji, V; Sophia Reena, G
    The study aims to analyse the bacterial pattern, to isolate the bacteria from polluted soil site and to identify the bacteria using 16s rDNA gene sequencing. The present research is carried out to isolate and identify the bacteria using molecular study. The bacteria is isolated using plating agar. The DNA extracted and PCR carried out. Further, the gene sequence was analyzed and the sequence was submitted to NCBI and accession number was allotted as MT126476. The bacteria identified as Enterobacter cloacae, the current interest in using omics technologies for elucidating the microbial diversity from potential contaminated site for harnessing microorganism for potential bioremediation perspectives.
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    POTENTIAL UTILIZATION OF A WEED PROSOPIS JULIFLORA LEAF EXTRACT NANOPARTICLE FOR DYE DEGRADATION AND ANTIBACTERIAL ACTIVITY
    (Springer Science and Business Media Deutschland GmbH, 2021) Sahithya, S; Krishnaveni, C
    The present study was conducted to evaluate the silver nanoparticle synthesized using leaf extract of Prosopis juliflora. For possible dye degradation and antibacterial activity on Gram positive and gram-negative bacteria (Bacillus subtilis and Pseudomonas putida). The acetone extract showed good anti-bacterial activity against both the organisms, the inhibitory effect increased with increase in concentration of the extract. The presence of Silver Nanoparticles in the leaf extract was observed by reduction of silver ions into silver nanoparticles. Fourier Transform Infra-Red (FTIR) analysis was done to detect the functional groups which will promote the antibacterial and dye degradation capabilites.
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    LIRIOPE PLATYPHYLLA EXTRACT AS A GREEN INHIBITOR FOR MILD STEEL CORROSION IN SULFURIC ACID MEDIUM
    (Taylor & Francis Online, 2021) Ill-Min, Chung; Venkatesan, Hemapriya; Seung-Hyun, Kim; Kanchana, Ponnusamy; Natarajan, Arunadevi; Subramanian, Chitra
    The phytochemical components of the methanol extract of Liriope platyphylla (L. platyphylla) leaves were identified using UHPLC, and their antioxidant activities were studied. The impact of the L. platyphylla extract on the corrosion of mild steel by 1 M H2SO4 was assessed using electrochemical and gravimetric techniques. L. platyphylla exhibited concentration-dependent corrosion protection activity through a mixed-mode adsorption process, as revealed by polarization studies. Impedance measurements indicated the development of a protective film of the inhibitor, which was confirmed by morphology studies at the micro level with scanning electron microscopy (SEM) and at the nano level with atomic force microscopy (AFM). Fourier transform infrared (FT-IR) studies also confirmed the adsorption of the inhibitor film onto the mild steel surface.
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    NANO-HYDROXYAPATITE (HAP) AND HYDROXYAPATITE/PLATINUM (HAP/PT) CORE SHELL NANORODS: DEVELOPMENT, STRUCTURAL STUDY, AND THEIR CATALYTIC ACTIVITY
    (Wiley, 2021) Manoj, Murugesan; Venkatesan, Krishnamurthy; Neha, Hebalkar; Mangalaraj, Devanesan; Ponpandian, Nagamony; Meena, Palaniappan; Swaminathan, Krishnaswamy; Aihua, Yuan
    The development of a new kind of material that is a nanostructured catalytic material with an environmentally benign nature that can be used for alternative energy has acquired significance in recent years. In this context, the use of heterogeneous catalysts for the transesterification of vegetable oils has gained prominence due to their eco-friendly and reusable nature. Hence in the present study, pure hydroxyapatite (HAp) and hydroxyapatite/platinum (HAp/Pt) nanostructured particles have been prepared successfully through a facile chemical method without templates and surfactants and their catalytic activity investigated for transesterification of natural vegetable oil to bioenergy (biodiesel). The textural and structural features of pure HAp and HAp/Pt were investigated using various characterization techniques such as x-ray diffraction, Fourier transform infrared (FTIR) and Raman spectroscopy, field emission scanning electron microscopy (FESEM), and transmission electron microscopy (TEM). The elements present in the prepared nanostructures were confirmed through energy dispersive spectroscopy (EDS) and x-ray photoelectron spectroscopy (XPS) techniques. The XPS analysis also confirms the metallic nature of the platinum in HAp/Pt. The specific surface area and porous nature of the prepared nanostructured catalysts were studied using the N2 physisorption Brunauer-Emmett-Teller-Barrett-Joyner-Halenda (BET-BJH) method. The catalytic activity of the pure HAp nanoparticles and HAp/Pt core shell nanorods with the Simarouba glauca plant seed oil was investigated. The obtained results indicate that the pristine HAp nanoparticles and HAp/Pt core shell nanorods (NRs) show 91.4% and 87.1% fatty acid methyl ester (FAME) conversion, respectively, potentially offering environmental benign biocatalysts for biofuel production from natural feed stock.
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    EVALUATION OF THE SYNTHESIZED NOVEL IRIDIUM (III) COMPLEXES AGAINST HELA CELL LINES THROUGH IN-SILICO, IN-VITRO AND DNA NICKING
    (Asian Pacific Journal of Cancer Prevention, 2021-02) Sathya Priyadarshini, G; Aathi, Muthusankar; Ramesh, Subramani; Selvi, Gopal
    Globally, the pharmaceutical industry is continuously driven in search of new anticancer drugs due to increasing rate of cancer patients. Clinical trials of Cisplatin has been explored, however, usage of Cisplatin as a drug is limited due to its various side effects, hence, alternative to platinum based complex drugs and its analogues are needed. Iridium complexes have been attracted widespread interests by virtue of their pharmacological and photo-physical properties; however the less number of complexes was reported in the literature. In this article, a new series of novel Iridium (III) complexes were synthesized using substituted quinoline Schiff Base (SB) ligands and characterized by spectroscopic techniques. The in- vitro cyto-toxicity assay showed that the Iridium (III) complex activity is equal to standard Cisplatin. In addition, computational docking studies have shown that the prominent binding sites for synthesized complexes against HeLa cell lines, which is comparable with standard Cisplatin drugs and other Ruthenium complexes.
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    PHARMACOLOGICAL EFFECT OF ANDROGROPHIS PANICULATA IN AMMONIUM ACETATE INDUCED HYPERAMMONEMIA: A DOSE-DEPENDENT STUDY
    (Informatics Publishing Limited, 2021-03-03) Hariharan, Chandran; Dinesh Kumar, Anandhan; Prabhu, Gunasekaran; Vanmathi, Babu; Vijayakumar, Natesan; Gobinath, Thilagar; Ramakrishnan, Arumugam
    Androgrophis paniculata is a commonly used medicinal plant in south Asian countries including India and Sri Lanka. Ammonium acetate was used as a food preservation reagent in food industries. This study is focused on the pharmacological effect of Androgrophis paniculata on the functioning of the liver, kidney and brain in ammonium acetate induced hyperammonemia rats. The hyperammonemia is induced by intraperitoneal injection of ammonium acetate 100 mg/kg body weight thrice a week for eight consecutive weeks. Hyperammonemia rats are supplemented orally with Androgrophis paniculata at 50 and 100 mg/kg body weight doses. Hyperammonemic rats showed increased circulating levels of ammonia, uric acid, creatinine, bilirubin, nitric oxide, lipid profile, enzymatic liver marker, sodium/potassium-ATPase and reduced level of urea. Androgrophis paniculata supplementation prevented the histopathological alteration of a vital organ such as liver, brain and kidney tissue. The pharmacological effects are more pronounced in rats treated with 100 mg/kg b.w of Androgrophis paniculata and comparable with the standard drug sodium benzoate drug-treated rats.
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    2-METHYLIMIDAZOLIUM PYRIDINE-2,5-DICARBOXYLATO ZINC(II) DIHYDRATE: SYNTHESIS, CHARACTERIZATION, DNA INTERACTION, ANTI-MICROBIAL, ANTI-OXIDANT AND ANTI-BREAST CANCER STUDIES
    (Taylor & Francis Online, 2021-09-25) Dhakshinamoorthy, Sudha; Sundararajan, Vairam; Subbarayan, Sarathbabu; Nachimuthu, Senthil Kumar; Ramasamy, Sivasamy; Suyambulingam, Jone Kirubavathy
    2-Methylimidazolium pyridine-2,5-dicarboxylato zinc(II) dihydrate crystal (1) is synthesized and characterized by Fourier transform infrared spectroscopy (FTIR), single crystal X-ray diffraction analysis (SCXRD), thermogravimetric-differential thermal analysis (TG-DTA), scanning electron microscopy (SEM), energy dispersive X-ray analysis (EDAX), powder X-ray diffraction analysis (PXRD), proton nuclear magnetic resonance (1H NMR) studies, electronic absorption studies (UV-VIS) and DNA interaction studies. 1 was then explored for anti-microbial, anti-oxidant and anti-cancer activity. The SCXRD studies show that the compound crystallizes in the triclinic system and exhibits a distorted octahedral geometry with methyl imidazole ion as the cation. An exothermic decomposition at 400 °C implies high temperature stability in TG-DTA. PXRD confirms the phase purity of the sample. 1H NMR and UV-VIS results show that the solution structure of 1 is in agreement with SCXRD data. DNA interactions evaluated by agarose gel electrophoresis method substantiate the intercalative mode of binding. Anti-oxidant analysis shows that it exhibits good scavenging ability against DPPH and NO radicals. Anti-microbial activity suggests that 1 has better activity against Escherichia coli than Staphylococcus aureus. Further, the potential anti-cancer activities of complex indicate that the compound has good activity with a half-maximal inhibition concentration (IC50) value of 21.3 against MCF-7 human breast cancer cell line, suggesting that it may act as an anti-breast cancer drug.