Bharathiar University

About: Bharathiar University is a education organization based out in Coimbatore, Tamil Nadu, India. It is known for research contribution in the topics: Thin film & Adsorption. The organization has 5812 authors who have published 8628 publications receiving 143934 citations. The organization is also known as: BU.

Hepatoprotective and curative properties of Kombucha tea against carbon tetrachloride-induced toxicity

Abstract: Kombucha tea (KT) is sugared black tea fermented with a symbiotic culture of acetic acid bacteria and yeasts, which is said to be tea fungus. KT is claimed to have various beneficial effects on human health, but there is very little scientific evidence available in the literature. In the present study, KT along with black tea (BT) and black tea manufactured with tea fungus enzymes (enzyme-processed tea, ET) was evaluated for hepatoprotective and curative properties against CCl4-induced toxicity, using male albino rats as an experimental model by analyzing aspartate transaminase, alanine transaminase, and alkaline phosphatase in plasma and malondialdehyde content in plasma and liver tissues. Histopathological analysis of liver tissue was also included. Results showed that BT, ET, and KT have the potential to revert the CCl4-induced hepatotoxicity. Among the three types of teas tried, KT was found to be more efficient than BT and ET. Antioxidant molecules produced during the fermentation period could be the reason for the efficient hepatoprotective and curative properties of KT against CCI4-induced hepatotoxicity.

Chromatographic finger print analysis of steroids in Aerva lanata L by HPTLC technique

Abstract: Objective To determine the chemical profile and steroids composition of the medicinally important plant Aerva lanata (A. lanata) L.

Synthesis and characterization of biopolymer electrolyte based on tamarind seed polysaccharide, lithium perchlorate and ethylene carbonate for electrochemical applications

Abstract: Eco-friendly and cost-effective solid biopolymer electrolytes based on tamarind seed polysaccharide (TSP) as host polymer with different concentrations of lithium perchlorate (LiClO4) as ionic dopant salt and different wt% of ethylene carbonate (EC) as plasticizer have been synthesized via solution casting technique. The amorphous nature and complexation of the salt with the polymer matrix have been confirmed by XRD and FTIR analysis, respectively. The change in glass transition temperature (Tg) of the polymer electrolyte has been measured using DSC analysis. Maximum ionic conductivity of 8.77 × 10−4 S cm−1 is obtained for the polymer electrolyte composition of 1 g TSP/0.45 g LiClO4 at ambient temperature, whereas the ionic conductivity improved to 1 order of magnitude (1.06 × 10−3 S cm−1) through the incorporation of 0.3 wt% EC plasticizer into the above polymer electrolyte composition determined by AC impedance analysis. The activation energy (Ea) is observed to be low for the highest conducting EC plasticizer incorporated polymer electrolyte. The value of ionic transference number estimated by Wagner’s dc polarization method reveals that the conducting species are predominantly Li+ ions. The electrochemical stability window of the highest conducting biopolymer electrolytes has been determined by LSV. From the constructed battery, the open circuit cell potentials of 1.6 and 1.9 V have been observed for the TSP-LiClO4 and TSP-LiClO4-EC polymer electrolyte systems, respectively. The performance of the constructed battery has been compared with the commercially available lithium battery.

Influence of thermal annealing on the composition and structural parameters of DC magnetron sputtered titanium dioxide thin films

Abstract: Titanium dioxide films have been deposited using DC magnetron sputtering technique. Films were deposited onto RCA cleaned p-silicon substrates at the ambient temperature at an oxygen partial pressure of $7 \times 10^{-5}$ mbar and sputtering pressure of $1 \times 10 ^{-3}$ mbar. The deposited films were annealed in the temperature range 673-873 K. The structure and composition of the films were confirmed using X-ray diffraction and Auger electron spectroscopy. The structure of the films deposited at the ambient was found to be amorphous and the films annealed at 673 K and above were crystalline with anatase structure. The lattice constants, grain size, microstrain and the dislocation density of the film are calculated and correlated with annealing temperature.