Latest News Archive

Please select Category, Year, and then Month to display items
Previous Archive
04 September 2019 | Story Leonie Bolleurs | Photo Charl Devenish
Jon Jacobson
Delivering the 31st Sophia Gray Memorial Lecture and Exhibition in Bloemfontein, was Jon Jacobson from Metropolis Design in Cape Town.

What is inside and what is outside? What is coming alive in the light? Minimalism. Hugeness. Shadows. Soft. Art. Complex. Conversation. Ambiguity. Clarity. All phrases and words used by the most recent Sophia Gray laureate, Jon Jacobson from Metropolis Design in Cape Town, to describe aspects of his work.

He delivered the 31st Sophia Gray memorial lecture in Bloemfontein. The name of his lecture at this prestigious event, organised by the UUFS Department of Architecture, was in [de] finite. Jacobson is the first graduate in the department’s MArch with Design.

Nature plays a big role in many of his projects, with a blurred distinction between the inside and the outside of the structures he builds. His designs fulfil the desire of a union with nature. 

A detailed investigation

Jacobson creates places and spaces to celebrate being. “Architecture is undeniably art, but it is also embodied in the completeness of the lived moment,” he says. 

Every project starts with a detailed investigation. “What social theory will we engage with? How progressive is it? What attitude will we take to the environment, to the theory of family? What other personal concerns will we be worried about? It is important to engage critically with this information. Important to build a philosophical base for each project,” says Jacobson.

He also believes it is important to consciously ensure that form follows idea with the same intensity that it follows function and that it does not blindly follow other form. 

At Metropolis, Jon and his team are client centred in their approach to design. Jon explains the process: “Some of the content is brought from the client’s personal and social aspiration and some from contemporary architecture culture, but the most potent component is the hidden set of ideas that emerge from our own engagements with the living world such as popular science, geology, art, music, literature, philosophy, theology, mysticism, and many others. And this emerges in the hidden sense of the word, in its architecture content.”

Content approach to design

In house design, Jon categorises the content that informs the architecture of the house: content pertaining to the individual, their philosophy, values and beliefs, content derived from culture, architecture and the arts, passion, religion, politics, and content referring to the natural world and its processes. Content from each of these spheres is present in any of his work. 

Jon says a major implication of a content approach to design is that it requires a design framework that is largely operative at a level of idea rather than at the level of form. This contributes to creating architecture rather than just buildings. 

His design method allows conscious control over the relationship between the ideas, the forms, and the poetics of the projects. “And at any point in the building process, it is possible to trace back and to critically assess whether any particular form is aligning with the core ideas of the project,” Jon indicates. 

Jon’s first taste of grappling with the infinite of architecture was with a garden pavilion he built for rest and relaxation. “For the first time I felt that we integrated planning, content, sight, programme, structure, and materiality into one unified whole that was expressed with a minimum of means and that was more than just the sum of its part,” he states.

He strongly believes that the individual is at the centre of every architectural project. He says the belief systems, type of social needs, family dynamics, physical habits, and spatial practices of their clients need to be investigated in detail in order to facilitate a meaningful spatial experience.

He continues: “We see our role as designers to saturate the environment with the meaning that enhances our clients’ daily experience in every possible way – from the ergonomic and the practical to the spiritual. In the process, the logics and tradition of architecture and the ego of the architect sometimes need to make way for human need and aspiration.”


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.

We use cookies to make interactions with our websites and services easy and meaningful. To better understand how they are used, read more about the UFS cookie policy. By continuing to use this site you are giving us your consent to do this.

Accept