Kuvempu University

About: Kuvempu University is a education organization based out in Shimoga, India. It is known for research contribution in the topics: Cyclic voltammetry & Carbon paste electrode. The organization has 1575 authors who have published 2210 publications receiving 39755 citations. The organization is also known as: KU.

Anti-microbial activity and film characterization of thiazolidinone derivatives of chitosan.

Abstract: Thiazolidinone derivatives (TDCs) were prepared by converting chitosan into chitosan's Schiff's bases (CSBs), followed by treatment with mercaptoacetic acid. Both CSBs and TDCs were tested for antimicrobial activity against four different bacteria. All TDCs showed comparatively better anti-microbial activity without much affecting basic physical properties of chitosan such as film-forming capacity, tensile strength, etc. This indicates that chitosane derivatives with a thiazolidinone moiety might be a better material for wound dressing.

Antioxidant activities of leaf galls extracts of terminalia chebula (gaertn.) retz. (combretaceae)

Abstract: Background. Free radicals are implicated in several metabolic diseases and the antioxidant therapy has gained an utmost importance in the treatment. The medicinal properties of plants have been investigated and explored for their potent antioxidant activities to counteract metabolic disorders. In this study, the chemical composition and free radical scavenging potential of leaf gall extracts (ethanol, petroleum ether, chloroform and aqueous) of Terminelia chebula is evaluated, which is extensively used in the preparation of traditional medications to treat various metabolic diseases. Material and methods. The presences of phenolics, fl avonoids, triterpens, saponins, glycosides, phytoster- ols, reducing sugars were identifi ed in the extracts according to standard procedures. The free radical scav- enging activities of the extract were also analysed by standard procedures. Results. The methanol extract had the highest total phenolic and fl avonoid content. The antioxidant activities of leaf gall extracts were examined using diphenylpicrylhydrazyl (DPPH), Super oxide radical scavenging, Hydroxyl scavenging and ferric reducing power (FRAP) methods. In all the methods, the ethanolic extract showed higher free radical scavenging potential than all the other extracts. Conclusion. As the higher content of both total phenolics and fl avonoids were found in the ethanolic extract, so the signifi cantly high antioxidant activity can be positively correlated to the high content of total polyphe- nols/fl avonoids of the ethanol extract. The results of this study confi rm the folklore use of T. chebula leaves gall extracts as a natural antioxidant and justify its ethnobotanical use. Further, the results of antioxidant properties encourage the use of T. chebula leave gall extracts for medicinal health, functional food and nu- traceutical applications.

The Effect of Cathode Materials on Indirect Electrochemical Oxidation of Methyl Orange, Malachite Green and Methylene Blue

Abstract: The influence of cathode material on the electrochemical degradation of methyl orange (MO), methylene blue (MB) and malachite green (MG) dyes was investigated. The cathode materials used were platinum (Pt), copper (Cu), zinc (Zn) and aluminum (Al). The electrochemical activity of the selected dyes on the metal cathodes was examined by cyclic voltammetry (CV). The electrochemical treatment was carried out in both divided and undivided cells. The degradation process was monitored by UV-Visible spectroscopy and chemical oxygen demand (COD) measurement. The influence of pH on discoloration and degradation of dyes was studied. The power consumption and current efficiency of the treatment process involving different cathode materials was computed and compared. The role of cathode material in the degradation of dyes has been established.