Japanese CDMO Peptistar reports that it has integrated Asahi Kasei’s forward osmosis–membrane distillation (FO–MD) system into its facility for trial production of active pharmaceutical ingredients (APIs).
Asahi Kasei announced in 2018 the development of a system that dehydrates and concentrates liquids without the application of heat or pressure. This reduces the number of freeze-drying batches and the amount of time required for freeze-drying, thereby shortening API manufacturing time. Peptistar has begun operation of the system at manufacturing scale as part of its evaluation toward GMP production.
![FOMD-system-for-concentration-without-heating-or-pressurization-installed-at-Peptistars-peptide-and-oligonucleotide-API-manufacturing-facility [Asahi Kasei]](https://www.genengnews.com/wp-content/uploads/2026/07/FOMD-system-for-concentration-without-heating-or-pressurization-installed-at-Peptistars-peptide-and-oligonucleotide-API-manufacturing-facility-300x225.jpg)
Recently, demand for APIs has shifted from traditional, high-volume small molecules to a broader need across biologics, peptides, oligonucleotides, viral vectors, and more, according to officials at both companies. API needs are becoming increasingly complex due to their high specificity and growing role in next-generation therapeutics.
Some of the next-generation APIs such as peptides and oligonucleotides are heat sensitive. Their manufacturing processes have thus relied on the costly, time-consuming, and energy-intensive freeze-drying method, which can remove solvents without heating, to obtain APIs with high quality explains an Asahi spokesperson.
Although the freeze-drying process can be shortened by concentrating the raw material solution to reduce the volume of liquid feed prior to the freeze-drying step, conventional concentration technologies such as vacuum distillation carry the risk of quality degradation due to heating, and the formation of precipitates caused by changes in solvent composition during the concentration step, adds the spokesperson.
![Overview-of-the-FOMD-system-for-concentration-without-heating-or-pressurization. [Asahi Kasei]](https://www.genengnews.com/wp-content/uploads/2026/07/Overview-of-the-FOMD-system-for-concentration-without-heating-or-pressurization-731x1024.jpg)
Asahi Kasei’s system for forward osmosis (FO) and membrane distillation (MD) addresses such manufacturing challenges by concentrating the raw material solution for pharmaceutical applications without applying heat or pressure, notes another Asahi official, explaining that FO utilizes an osmotic pressure difference across a membrane to remove water from liquids, achieving highly concentrated API solutions under mild conditions. MD leverages a vapor pressure difference across a membrane to remove volatile components such as acetonitrile, alcohol, or ammonia, at or below room temperature.
Asahi Kasei says it looks forward to studying the prospects for future commercialization of the FO–MD system.
