May 7th 2025
This article explores the impact of test volume, microbial distribution, and dilution errors on bioburden testing variability. It presents statistical approaches to estimate percentage error and discusses strategies to optimize microbial enumeration techniques in biopharmaceutical quality control.
There is a great need for sensitive, precise, and easily accessible analytical detection techniques for protein sequencing.
Scaling down biopharmaceutical operations Part 1: Fermentation
April 1st 2006Creation and qualification of scale-down models are essential for performing several critical activities that support process validation and commercial manufacturing. As shown in Figure 1, these activities include process characterization and production support studies that are performed to evaluate column and membrane lifetimes, demonstrate clearance of host-cell impurities and viruses and troubleshoot manufacturing issues. While the underlying fundamentals are relatively the same as those when scaling up, some unique considerations should be taken when scaling unit operations down.4
Viral filtration of plasma-derived human IgG
March 1st 2006Human plasma provides a rich source of therapeutic medicines, including gamma globulins, coagulation factors, albumin, alpha anti-trypsin and others. In 2001, sales of immuno gamma-globulin (IgG) were estimated at $2 billion with a production rate of 50 metric tons for the year.1 A number of therapeutic products have been introduced including Gammimune from Bayer, RhoPhylac from ZLB Behring and Octagam from Octapharma.
Adsorption of small drug particles at the surface of large excipients
January 1st 2006Applications of adsorption of small drug particles at the surface of large excipients were introduced, and different factors affecting adsorption process were discussed and summarized. Several examples of adsorbing drugs to excipients to increase dissolution rate were exhibited in this article.
Increasing Bioprocessing Efficiency, Single Use Technologies
January 1st 2006The medical industry was the first to understand the benefits of using disposable devices, such as needles and syringes, to prevent risks of cross contamination. The technology was then extended to blood transfusion activities, and it was only 10–15 years ago that the biopharmaceutical industry started to use disposables. Initially, most of the applications were limited to storage, involving bags, tubing and filter capsules. Since then, significant progress has been made in the polymer and plastics industry; in particular, a number of organic polymers have been developed that are resistant to gamma irradiation, autoclaving and even sterilization-in-place, rendering the technology attractive and usable by the biopharmaceutical industry. Now, the industry is moving beyond storage-focused disposable technologies to more complex processing applications.
A new concept in aseptic filling: closed-vial technology
January 1st 2006The closed vial has been developed to improve aseptic filling quality and to reduce process complexity. A ready-to-fill closed vial consists of a sterile vial provided with the stopper secured in place. The vial is filled by inserting a non-coring needle through the stopper, which is then resealed by laser.
How polymeric microspheres deliver the goods
January 1st 2006Drug delivery systems using biocompatible polymers allow controlled release of therapeutics, addressing many of the challenges of conventional administration. Polymer microspheres are attractive delivery systems, having a wide application in numerous therapeutic indications. This article reviews the current use and trends for polymer microspheres, and compares production methods and polymer characteristics.
The role of bracketing and matrixing in efficient design of stability protocols
December 1st 2005This article looks at the use of bracketing and matrixing to lower the number of stability samples required and, consequently, reduce the cost of sample production, testing and management. There is a common misconception that regulatory authorities will not accept such methods, but there is actually an International Conference on Harmonization guideline (ICH Q1D) on the subject. In fact, many of these designs have already been accepted and FDA members were among the first to describe matrixing.
Is your IT infrastructure qualified?
December 1st 2005A new Good Automated Manufacturing Practice (GAMP) guide on IT Infrastructure Control & Compliance was launched in Chicago (IL, USA) 23 August 2005.1 The guide is intended to support pharmaceutical companies in their effort to establish a well-defined and compliant infrastructure. This article discusses different aspects of the guide that may support your organization in getting — and keeping — your infrastructure under control.