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18 May 2025 | Story André Damons | Photo André Damons
Research room
Prof Corinna Walsh from the UFS Department of Nutrition and Dietetics explains how the PEA POD® infant body composition analyser works. Dr Balekile Mzangwa, CEO of Universitas Academic Hospital, and Dr Grace London, Chief Director: District Health services at the Free State Department of Health, listens in.

In a significant stride toward improving maternal and child health in the Free State, the Universitas Academic Hospital, in collaboration with the Faculty of Health Sciences at the University of the Free State (UFS), has launched an innovative Research Room which houses the PEA POD® infant body composition analyser and the Dual-Energy X-ray Absorptiometry (DXA) machine used to assess body composition and bone mineral density.

The initiative, which marks a new era in neonatal care and research, aims to integrate cutting-edge technology into routine clinical care. The PEA POD®, a non-invasive device that uses air displacement plethysmography, allows for precise measurement of fat and fat-free mass in newborns – offering a more accurate assessment of growth and nutritional status than traditional methods. 

The research room is a newly renovated and dedicated space adjacent to the maternity and neonatal units, ensuring quick, safe access to the newborns in the hospital. Two full-time MSc Dietetics students have been trained to perform the PEAPOD® assessments and colleagues from Radiography will perform the DXA assessments. This work lays the foundation for an ongoing maternal and infant body composition database –  a valuable resource for research, clinical care, and policy guidance.

Aligned with national health priorities

According to Prof Corinna Walsh from the UFS Department of Nutrition and Dietetics, this initiative is the result of a multidisciplinary collaboration across Paediatrics and Child Health, Obstetrics and Gynaecology, Radiography, Nutrition and Dietetics, to mention just a few of the collaborators. They are optimistic about the dual impact of this project as it advances academic and clinical research in early-life nutrition and growth as well as enhancing patient care at Universitas Hospital – bringing measurable benefits to mothers and their babies, she said. 

“This initiative is well aligned with national health priorities. According to the South African Early Childhood Review 2024, malnutrition in all its forms remains a significant challenge with short- and long-term consequences for mothers and their babies, especially during the first 1 000 days of life, from conception to the second birthday.

“We know from global and local evidence that growth patterns established during early life have profound and lasting effects on an individual’s health, development, and well-being. Our work at the University of the Free State has focused on the nutritional status of pregnant women and the early environments to which infants are exposed, both during and after pregnancy,” said Prof Walsh. 

However, she continued, in previous studies, they faced a significant challenge: the lack of specialised equipment to accurately measure infant body composition. Traditional measures such as weight and length provide only part of the picture.

 

New possibilities in healthcare, science, and service

Dr Mzangwa said the day not only marks the unveiling of state-of-the-art technology, but the beginning of a new chapter in how they will care for and understand the youngest and most vulnerable patients. The PEA POD® and DXA, which is now housed just steps away from the maternity and neonatal wards, symbolise a shared vision between the hospital and the Faculty of Health Sciences at the UFS: a vision grounded in evidence-based care, cutting-edge research, and above all, compassion.

“We express our sincere appreciation to everyone who supported this initiative. We also acknowledge the dedication of all the collaborating departments – Paediatrics and Child Health, Obstetrics and Gynaecology, Radiography, Nutrition and Dietetics –  and thank Prof Corinna Walsh and Dr Lizzy Tabane for their leadership and insight.”

Prof Janse van Vuuren, said: “Today, we do more than open a physical space. We open the door to new possibilities in healthcare, science, and service to the people of our province. It is a shining example of what can be achieved when government and academia come together, united by a common purpose – to improve lives through knowledge, innovation, and care.”

The technologies that will be used in this facility are more than just advanced instruments, they are tools that allow medical staff to better understand the human body in its earliest and most vulnerable stages, as well as throughout the lifespan. With this understanding comes the ability to make informed decisions, to intervene earlier, and to tailor care in ways that truly meet the needs of our patients, said Prof Janse van Vuuren.

“This space is more than a research centre. It is a testament to our commitment to evidence-based care. It is a place where data meets compassion, where science serves humanity. The work that will happen here will not be confined to the walls of academia –  it has the potential to ripple outward into clinics, into hospitals, and into homes. It will shape guidelines, inform policy, and ultimately, improve outcomes for patients across our province and beyond.”


News Archive

Research eradicates bacteria from avocado facility
2017-01-17

 Description: Listeria monocytogenes Tags: Listeria monocytogenes

Listeria monocytogenes as seen under an electron
microscope. The photo was taken with a transmission
electron microscope at the microscopy unit of the UFS.
Bacteriophages (lollipop-like structures) can be seen
next to the bacterial cells.
Photo: Supplied

“The aim of my project was to identify and characterise the contamination problem in an avocado-processing facility and then to find a solution,” said Dr Amy Strydom, postdoctoral fellow in the Department of Microbial Biochemical and Food Biotechnology at the University of the Free State (UFS).

Her PhD, “Control of Listeria monocytogenes in an Avocado-processing Facility”, aimed to identify and characterise the contamination problem in a facility where avocados were processed into guacamole. Dr Strydom completed her MSc in food science in 2009 at Stellenbosch University and this was the catalyst for her starting her PhD in microbiology in 2012 at the UFS. The research was conducted over a period of four years and she graduated in 2016. The research project was funded by the National Research Foundation.

The opportunity to work closely with the food industry further motivated Dr Strydom to conduct her research. The research has made a significant contribution to a food producer (avocado facility) that will sell products that are not contaminated with any pathogens. The public will then buy food that is safe for human consumption.


What is Listeria monocytogenes?

Listeria monocytogenes is a food-borne pathogenic bacterium. When a food product is contaminated with L. monocytogenes, it will not be altered in ways that are obvious to the consumer, such as taste and smell. When ingested, however, it can cause a wide range of illnesses in people with impaired immune systems. “Risk groups include newborn babies, the elderly, and people suffering from diseases that weaken their immune systems,” Dr Strydom said. The processing adjustments based on her findings resulted in decreased numbers of Listeria in the facility.

The bacteria can also survive and grow at refrigeration temperatures, making them dangerous food pathogens, organisms which can cause illnesses [in humans]. Dr Strydom worked closely with the facility and developed an in-house monitoring system by means of which the facility could test their products and the processing environment. She also evaluated bacteriophages as a biological control agent in the processing facility. Bacteriophages are viruses that can only infect specific strains of bacteria. Despite bacteriophage products specifically intended for the use of controlling L. monocytogenes being commercially available in the food industry, Dr Strydom found that only 26% of the L. monocytogenes population in the facility was destroyed by the ListexP100TM product. “I concluded that the genetic diversity of the bacteria in the facility was too high and that the bacteriophages could not be used as a control measure. However, there is much we do not understand about bacteriophages, and with a few adjustments, we might be able to use them in the food industry.”

Microbiological and molecular characterisation of L. monocytogenes

The bacteria were isolated and purified using basic microbiological culturing. Characterisation was done based on specific genes present in the bacterial genome. “I amplified these genes with polymerase chain reaction (PCR), using various primers targeting these specific genes,” Dr Strydom said. Some amplification results were analysed with a subsequent restriction digestion where the genes were cut in specific areas with enzymes to create fragments. The lengths of these fragments can be used to differentiate between strains. “I also compared the whole genomes of some of the bacterial strains.” The bacteriophages were then isolated from waste water samples at the facility using the isolated bacterial strains. “However, I was not able to isolate a bacteriophage that could infect the bacteria in the facility.

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