Digital Penicillin Production

For thousands of years, micro-organisms have been used to facilitate chemical reactions - in beer brewing, for example. However, biochemical processes are incredibly complex, with a multitude of reactions taking place simultaneously and influencing one another. There are countless parameters that play a role, not all of which can be directly measured.

Despite the difficulties involved, researchers at TU Wien are now working on examining these processes in detail. Now, in cooperation with pharmaceutical manufacturer Sandoz, TU Wien has succeeded in analysing and comprehensively replicating a penicillin production process using a computer model. This process has even enabled researchers to determine parameters that cannot be measured directly. Sandoz is now making use of these findings to keep a full overview of the processes in the bioreactor at all times, ensuring optimum quality.

Black box replaced by in-depth knowledge

Many chemical reactions are easy to understand: if hydrogen is burned with oxygen, water is produced - in a clearly predictable manner and in a volume that can be precisely calculated beforehand. But how can you calculate how quickly a fungus will grow and proliferate under the constantly changing conditions in a bioreactor?

"For a long time, processes like this were seen as a 'black box' that cannot be understood and that can only be effectively exploited with a lot of experience," says Prof. Christoph Herwig, who leads the research group for bioprocess technology at TU Wien's Institute of Chemical, Environmental and Bioscience Engineering. "Our approach is somewhat different: we want to analyse the chemical processes in a bioreactor in detail and determine the equations that describe these processes." The aim is to produce a mathematical model that accurately replicates these processes within the bioreactor.

"Many parameters that are vital to the process simply cannot be directly measured, such as the growth rate of the micro-organisms," explains Julian Kager, who is working with Sandoz GmbH as part of his dissertation. "This is precisely why a comprehensive mathematical model is so useful: we use accessible data from the production process in real time, such as the concentration of various substances in the bioreactor, and use our computer model to calculate the most probable state of the process." The parameters that can't be measured can therefore be calculated.

The model information can be used to optimise the nutrient supply to the cultivated cells while the process is ongoing.

The system of equations used to mathematically describe the bioprocess is as complex and multifaceted as the process itself. "The system of equations describes a non-linear dynamic system. Even the smallest variations in the starting conditions can have a huge impact," explains Kager. "This means it's not really possible to simply work out a solution by hand; instead, relatively elaborate computer simulations are required to obtain the needed results."

The process model and algorithms developed at TU Wien are now being used by Sandoz GmbH for its penicillin production process. "We are very pleased that our basic research has been adopted for use in industry so quickly and that our approach of biochemical modelling is now being used to facilitate the automated control of pharmaceutical production processes," says Julian Kager.

Julian Kagera, Christoph Herwigab, Ines Viktoria Stelzercd.
State estimation for a penicillin fed-batch process combining particle filtering methods with online and time delayed offline measurements.
Chemical Engineering Science, Volume 177, 23 February 2018, Pages 234-244. doi: 10.1016/j.ces.2017.11.049.

Most Popular Now

A New Machine Learning Model can Classif…

Machine learning has improved dramatically in recent years and shown great promise in the field of medical image analysis. A team of research specialists at Dartmouth's Norris Cotton Cancer Center...

3D Child Welfare: How Data, Design and D…

Opinion Article by Rainer Binder, Managing Director, Global Employment and Social Services, Accenture Child welfare remains a pressing challenge for governments around the world, and the statistics are heart-breaking. In the...

Bringing more Human Intelligence to AI, …

The advent of data science, wireless connectivity and sensors, artificial intelligence (AI), and the Internet of Things (IoT) has raised the prospects for digital automation, smart hospital design and the...

HIMSS and Health 2.0 Take the Most Influ…

11 - 13 June 2019, Helsinki, Finland. The HIMSS & Health 2.0 European Conference will be held on 11 - 13 June 2019 in Helsinki, the capital of Finland. The conference...

DMEA 2019: International Exchange on Dig…

9 - 11 April 2019, Berlin, Germany. DMEA (formerly conhIT) is the industry's main event for digital healthcare. In that context, an international exchange of experiences and networking beyond national borders...

Scotland's Digital Health Leaders Recogn…

Scotland's digital health champions have been recognised for their achievements at the Holyrood Connect Digital Health and Care Awards 2019. William Edwards, director of eHealth at NHS Greater Glasgow and...

Philips to Expand its Radiology Informat…

Royal Philips (NYSE: PHG, AEX: PHIA), a global leader in health technology, today announced that it has signed an agreement to acquire the Healthcare Information Systems business of Carestream Health...

Three Winners of 2019 Sandoz Healthcare …

Sandoz, a Novartis division, announced the winners of the 2019 Sandoz Healthcare Access Challenge (HACk). Sandoz HACk invites entrepreneurs and innovators in the field of digital technology to submit ideas...

UK Sales of Xanax and other Prescription…

Sales of prescription psychiatric drugs such as Xanax and diazepam via darknet online drug markets have increased in the UK at an alarming rate, according to new research by the...

Study Finds Robots can Detect Breast Can…

Breast cancer is the most common cancer in women, and despite important improvements in therapy, it is still a major cause for cancer-related mortality, accounting for approximately 500,000 annual deaths...

Accenture Wins GLOMO Award for Virtual R…

The Accenture (NYSE: ACN) Virtual Experience Solutions (AVEnueS) has won "Best Mobile VR or AR" at the GSMA GLOMO Awards 2019. The award was presented at MWC19 Barcelona.