Biogenic synthesis of ZnO and NiO nanoparticles mediated by fermented Cocos nucifera. (L) deoiled cake extract for antimicrobial applications towards gram positive and gram negative pathogens

Abstract

Cocos nucifera (L) is a widespread tall plant and found to havelot of important pharmacological applications and it is very less toxic in nature. The water of the endocarp has high antioxidant activity, and its fiber was reported to have antibacterial, ant parasitic and anti-inflammatory properties. The oil derived from its edible parts have been used in cooking, in the preparation of the soaps and cosmetics etc. The water within can be processed to produce alcohol. Once the endocarp was crushed and the extract were removed it can used as a feed material and as a natural organic fertilizer. Herein, we report the novel method of utilizing the residue of the deoiled seed cake of Cocos nucifera (L) for preparing the metal oxides as a reducing agent and to test its antimicrobial level against human pathogens. Methods: The method adopted in this investigation is the fermentation process of preparing the Cocos nucifera (L) extract by utilizing the water as the medium for the extraction process under room temperature.