Progress in the development of bioprocessing-related assays and analytical instrumentation has not kept up with industry demands. The industry wants analytical technologies (especially for single use) to help improve productivity, optimize and monitor processes, provide real-time product quality control, and characterize biosimilars. These trends are reflected in our recent survey data. Over 30% of biopharmaceutical manufacturers and contract manufacturing organizations (CMOs) have expressed demands for improved assays and analytical equipment (1). BioPlan Associates’ eighth annual survey of biopharmaceutical…
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Localized Surface Plasmon Resonance for Bioprocess Development, Monitoring, and Validation
Academic laboratories have embraced localized surface plasmon resonance (LSPR) as the “new wave†of label-free technology (1). This technique is based on the ability of colloidal metal nanoparticles or nanostructured metallic films to absorb light in a narrow wavelength range. Metal nanostructures “sense†changes occurring at their surfaces by shifting the frequency of the light they absorb or reflect. As a consequence, a basic LSPR system requires only optical fibers, a source of white light, and a detector…