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18 March 2022 | Story Dr Chantell Witten | Photo Supplied
Dr Chantell Witten is from the Division Health Science Education, Faculty of Health Sciences, at the University of the Free State

Opinion article by Dr Chantell Witten, Division Health Science Education, Faculty of Health Sciences, University of the Free State (UFS). 
As we count down to Human Rights Day commemorated annually on 21 March, we are acutely aware of the failures of the state to realise and satisfy the human rights enshrined in our Constitution and Bill of Rights, especially for children.
Since the dawn of democracy in South Africa in 1994 the country has struggled with a persistent high level of child malnutrition measured as stunting, when children are too short for their age.  This is not just shortness of height but it is a proxy for compromised health and a risk factor for lower cognitive development, lower education attainment and lower future productivity both in work output and in earning capabilities. Unhealthy children are likely to be our future unhealthy adults and compromised human development.

Protect children from hunger

It is for this reason that all efforts must be explored to protect children from hunger. Since the outbreak of the COVID-19 pandemic more than two years ago, there have been huge negative impacts on global health and development which are bearing down on the youngest members of the planet, our children. These impacts on children are costing their lives now and well into the future. South Africa has the largest social protection programme for children on the African continent with a child support grant that benefits more than 12 million children under the age of 18 years. On 23 February 2022, Finance Minister Enoch Godongwana announced that the child support grant would increase from R460 to R480 per month as from 1 April. A mere 4% increase, against a year-on-year food and non-alcoholic beverages inflation of 5.5%, rendering the already measly child support grant ineffective to keep hunger at bay, much less to address the nutrition that children need to grow and be healthy. In Section 28 of the Bill of Rights in our Constitution states that “every child has the right to basic nutrition, shelter, health care and social services, as well as the right to be protected from maltreatment, neglect, abuse or degradation”. But the high levels of child malnutrition, almost one in three children are stunted, while one in four households reported child hunger. This is a result of the failure to protect children.

One of South Africa’s leading civil society organisations, the Black Sash, undertook research with the South African Medical Research Council to explore how households receiving the child support grant managed with respect to food procurement and dietary patterns. I was approached to assist with child nutrition data interpretation and policy implications. It was not surprising to find that all 12 households included in this qualitative study were not able to cope or meet their food needs. These households’ food purchasing patterns were insufficient in quantity and in dietary quality. All household members were not able to eat regularly or sufficiently to keep hunger at bay. Even for children, hunger was a norm. Even for a household of a single mother and her five-year-old child, the child support grant was not enough to buy enough food, and other essentials like electricity, toiletries and cleaning materials. This was a huge cause for concern, given the context of COVID and the need to wash hands and surfaces regularly.

Trauma of  caregivers to provide food

The nutrition evaluation of the foods that were purchased was lacking in diversity, nutrient-density and low-quality foods, raising the issue of food safety as well. Poor households dependent on the child support grant, even with multiple grants, was not enough to buy enough food for all the household members. Many adults are forced to go without meals or reduce the amount of food they eat and to rely on food relief efforts like soup kitchens, food packs and food charity. The most heart-wrenching finding is the constant experience of trauma faced by caregivers to provide food for their hungry children. Caregivers expressed feelings of shame and guilt knowing that their children are hungry, for sending their children to ask for food from neighbours and community members. The constant cries for food would drive caregivers to ‘hit the children and send them to bed’. Sleeping is an escape from hunger and having to deal with hunger. These households are under severe psychological strain, re-emphasising that hungry people are angry people. This is not conducive for optimal child care and highlights hunger as a driver of child ‘maltreatment, neglect, abuse or degradation’ as listed in the Bill of Rights.

While caregivers are resourceful in trying to stretch the food budget by buying cheaper, smaller quantities of food products, giving small children many smaller snack foods and taking cash loans to buy foods, these efforts do not shield or protect children from the physical and psychological harm of hunger. A whole-of-society response is needed to create more provision efforts like community out-reach kitchens, food drives and donations, macro-policy initiatives to subsidise food for grant recipients, promotion and support of food gardens and to push government to institute a Basic Income Grant for unemployed persons 18-59 years of age. The child support grant is not enough to protect children from chronic hunger which itself is ‘maltreatment, neglect, abuse or degradation’ as enshrined in the South African Bill of Rights.

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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