RESUMEN
Reliable experimental protocols using green technologies to synthesize metallic nanostructures widen their applications, both biological as well as biomedical. Here, we describe a method for synthesizing gold nanotubes using biologically synthesized gold nanoparticles in a template based approach. E. coli DH5α was used as bionanofactory to synthesize gold nanoparticles. These nanoparticles were then deposited on sodium sulfate (Na2SO4) nanowires which were employed as sacrificial template for gold nanotube (Au-NT) formation. The gold nanoparticles, sodium sulphate nanowires and gold nanotubes were appropriately characterized using transmission electron microscopy. The TEM results showed that the average diameter of gold nanotubes was 72 nm and length up to 4-7 µm. The method discussed herein is better than other reported conventional chemical synthesis approaches as it uses biologically synthesized gold nanoparticles, and does not employ any harsh conditions/solvents for template removal which makes it a clean and ecofriendly method.
RESUMEN
The Canine parvovirus gene is inserted in E.coli (DH5α) strain. Grow the recombinant E. coli for the plasmid DNA using molasses medium to make the vaccine. During the initial studies I have found that the molasses can manipulate the C/N ratio as per requirement of cell. Molasses is one of the best alternatives as it is cheap and can be easily manipulated. During the experiment the O.D of culture and O.D of plasmid DNA was observed in respective of different optimization method. I observed that the O.D value has increase to i.e. 2.129, as it was earlier i.e. 0.393. The quality and quantity of the plasmid DNA was very good. It is possible to produce vaccine by molasses medium. The paper is opening a new face of study.