In the ancient times plants, algae, fungi, bacteria and viruses have been used for the synthesis of non-toxic metal nano particles. Synthesis of nano particles by green route is found to be highly effective against multi-drug resistant human pathogenic bacteria. Green synthetic method has been used in the preparation of various materials like silver nano particles. The plant is used as a source for the reduction of silver as it contains many reducing substances. Silver nano particles have been extensively used as anti-bacterial agents in the health industry, food storage, textile coatings and...