Munusamy Thirumavalavan

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This article covers the adsorption capacity of microcystin-LR (MC-LR) onto natural organic matter (NOM) or suspended solids of water samples from reservoirs (Emerald and Jade reservoirs) and rivers (Dongshan, Erhjen and Wukai rivers) in Taiwan to determine the fate, transport behavior and photo-degradation of microcystins in natural water systems. Langmuir(More)
The present work was aimed at developing stability enhanced silica gel-supported macroporous chitosan membrane for immobilization of enzymes. The membrane was surface modified using various cross-linking agents for covalent immobilization of enzyme Bovine serum albumin. The results of FT-IR, UV–vis, and SEM analyses revealed the effect of cross-linking(More)
Nano zinc oxide (ZnO) with moderate surface area and high pore volume were prepared using a facile preparation method. Chitosan was utilized as both chelating and structure directing agent. The application of chitosans in this study suggested that even biowastes can be served in a productive manner economically. The surface modification of chitosan was(More)
A series of silica-supported macroporous chitosan membranes (CM15, CM20, and CM25) was prepared by varying the ratio of 70–230-μm-sized silica particles. These synthesized membranes were further cross-linked using different cross-linking agents for covalent immobilization of biological macromolecules especially enzymes and in this study, Bovine serum(More)
The objective of the present study was to identify the proteome pattern, isolate and study the functions of selective proteins from Ferula asafoetida root exudate using chromatographic techniques. The root exudate proteins were fractionated using ion-exchange and gel filtration chromatography. A range of bioactive protein fractions were then separated in(More)
The development of a complete set of extensive studies combining both the preparation factors of catalysts and photocatalytic experimental factors for the photodegradation of methylene blue, crystal violet, and Congo red using effective nano zinc oxide (ZnO) obtained from polysaccharides (chitosans, corn starch, and sodium alginate) as chelating agents was(More)
Human immunodeficiency virus is a retrovirus that causes acquired immunodeficiency syndrome, a condition in humans in which the immune system begins to fail, leading to life threatening opportunistic infections. Reverse transcriptase inhibitors are class of antiretroviral drugs used to treat HIV infection. RTIs inhibit activity of reverse transcriptase, a(More)
The aim of the present study was to isolate and characterize a proteinaceous α-amylase inhibitor from the whole plant extract of Leucas aspera (Willd) Link. The proteins were further purified by fast and reliable ion-exchange chromatography. A ~ 28 kDa protein from L. aspera inhibited the activity of fungal α-amylase by 90% at 80:1 (inhibitor:enzyme) ratio.(More)
Porous chitosan membrane was fabricated by casting method using silica particles. Simultaneously nano ZnO was synthesized by green-synthesis method using tung ting oolong tea extract. Chitosan membrane was combined with nano ZnO in order to increase its antimicrobial activity. Through observations obtained from various techniques such as XRD, SEM, FT-IR,(More)