Triterpenoid Saponins: A Review on Biosynthesis, Applications and Mechanism of Their Action
Authors: Vasudeva Reddy Netala, Pushpalatha Bobbu, Dandu Anitha, Vijaya Tartte, Sukhendu Bikash Ghosh
Abstract
Saponins are the potential bioactive compounds secreted by plants, endophytic fungi and marine organisms. Saponins are the glycosides containing non sugar portion, aglycone (sapogenin) attached to sugar moiety by glycosidic linkage. Depending on the chemical nature of aglycone, saponins are of triterpenoid and steroid saponins. The present review gives an overview of the biosynthesis pathway of triterpenoid saponins and mechanism of the biosynthesis. The review discusses the biomedical and pharmaceutical importance of triterpenoid saponins as they possess different activities including antimicrobial, haemolytic, hypolipidemic, immunomodulating and cytotoxic activities. The review also focuses on the mechanism of their action towards various activities.
A Note on sg* Continuous Mappings in Soft Topological Spaces
Authors: V. Ramya, R. Asokan
Abstract
The aim of this paper is to introduce sg*closed set in a Soft topological space and to study some of its properties. Then sg* continuous mapping and irresolute mapping areintroduced and some of its properties are studied. The concept sg* open, sg* closed mappings and sg*homeomorphism are introduced and their properties are studied.
A Review on Zinc Oxide Nanoparticles and Their Applications
Author: G. Sangeetha
Abstract
Nanotechnology allocate with the production and usage of material with nanoscale dimension, nanoparticles are large surface area to volume ratio and thus very specific properties. Zinc oxide (ZnO) nanoparticles had been in current studies due to its large bandwidth and high exciton binding energy and it has prospective applications such as Antimicrobial activity, Antioxidant activity · Cytotoxic activity, Photocatalytic degradation’s magnetic and chemical properties that are significantly different from those of bulk counterpart. The aims of this review to provide a comprehensive view on structural, synthesis and electrochemical properties of the ZnO nanoparticles, which were synthesized by different methods.