Bøker av Dolly Verma

In summary, the goal of this work was achieved by successfully separating phycocyanin from Spirulina and encapsulating it in chitosan nanoparticles. The effectiveness of the phycocyanin nanoparticles' antioxidant and antibacterial characteristics was then evaluated. The nanoparticles show a significant potential for antioxidant and antibacterial action, according to our data. In addition, it was found that the nanoparticles were more active than the crude phycocyanin extract, indicating that the formulation technique was effective. The examination of phycocyanin nanoparticles using techniques such as transmission electron microscopy, dynamic light scattering, and Fourier transform infrared spectroscopy yielded valuable information about the nanoparticles' physicochemical properties. The nanoparticles were spherical, ranged in size from 80 to 120 nm, and had a zeta potential of -30 mV, according to the results. The FTIR analysis demonstrated conclusively that chitosan was included in the nanoparticle formulation.

The project aimed to isolate, screen, and characterize biosurfactant-producing bacteria from oil-contaminated soils, including petroleum soil, garage soil, and agro-industrial waste soil. Various microbiological techniques were employed to isolate and identify bacterial strains with potential biosurfactant production capabilities. The biosurfactants produced by these strains were thoroughly characterized, and their properties were evaluated. The findings highlight the promising potential of biosurfactant-producing bacteria in remediating oil-contaminated soils and producing biosurfactants for diverse industrial applications. The study serves as a foundation for further research on optimizing biosurfactant production and developing sustainable approaches for soil and oil remediation.

In this study, researchers focused on selecting Bambusa Arundinaceae (Bamboo) and Euphorbia Hirta plants for synthesizing silver nanoparticles (AgNPs). These plants were chosen for their diverse medicinal properties. The FTIR analysis provided valuable information about the structure of the synthesized nanoparticles, confirming the presence of characteristic bands associated with silver nanoparticles in both Bamboo and Euphorbia samples. These bands indicated the formation of stable AgNPs and suggested the involvement of specific functional groups from the plant extracts in the reduction and stabilization process. The antimicrobial activity of the synthesized AgNPs was also evaluated against pathogenic organisms. The results demonstrated potential antimicrobial efficacy for both Bamboo and Euphorbia nanoparticles. However, further investigations are needed to elucidate the exact mechanism underlying their antimicrobial activity. In summary, this study successfully synthesized silver nanoparticles using an eco-friendly approach by employing Bamboo and Euphorbia leaf extracts as reducing agents.