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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

Researcher part of project aimed at producing third-generation biofuels from microalgae in Germany
2016-05-09

Description: Novagreen bioreactor  Tags: Novagreen bioreactor

Some of the researchers and technicians among the tubes of the Novagreen bioreactor (Prof Grobbelaar on left)

A researcher from the University of the Free State (UFS), Prof Johan Grobbelaar, was invited to join a group of scientists recently at the Institute for Bio- and Geo-Sciences of the Research Centre Jülich, in Germany, where microalgae are used for lipid (oil) production, and then converted to kerosene for the aviation industry.

The project is probably the first of its kind to address bio-fuel production from microalgae on such a large scale.  

“The potential of algae as a fuel source is undisputed, because it was these photoautotrophic micro-organisms that were fixing sunlight energy into lipids for millions of years, generating the petroleum reserves that modern human civilisation uses today.  However, these reserves are finite, so the challenge is marrying biology with technology to produce economically-competitive fuels without harming the environment and compromising our food security.  The fundamental ability that microalgae have to produce energy-rich biomass from CO2, nutrients, and sunlight through photosynthesis for biofuels, is commonly referred to as the Third-Generation Biofuels (3G),” said Prof Grobbelaar.

The key compounds used for bio-diesel and kerosene production are the lipids and, more particularly, the triacylglyserols commonly referred to as TAGs.  These lipids, once extracted, need to be trans-esterified for biodiesel, while a further “cracking” step is required to produce kerosene.  Microalgae can store energy as lipids and/or carbohydrates. However, for biofuels, microalgae with high TAG contents are required.  A number of such algae have been isolated, and lipid contents of up to 60% have been achieved.

According to Prof Grobbelaar, the challenge is large-scale, high-volume production, since it is easy to manipulate growth conditions in the laboratory for experimental purposes.  

The AUFWIND project (AUFWIND, a German term for up-current, or new impetus) in Germany consists of three different commercially-available photobioreactor types, which are being compared for lipid production.

Description: Lipid rich chlorella Tags: Lipid rich chlorella

Manipulated Chlorella with high lipid contents (yellow) in the Novagreen bioreactor

The photobioreactors each occupies 500 m2 of land surface area, are situated next to one another, and can be monitored continuously.  The three systems are from Novagreen, IGV, and Phytolutions.  The Novagreen photobioreactor is housed in a glass house, and consist of interconnected vertical plastic tubes roughly 150 mm in diameter. The Phytolutions system is outdoors, and consists of curtains of vertical plastic tubes with a diameter of about 90 mm.  The most ambitious photobioreactor is from IGV, and consists of horizontally-layered nets housed in a plastic growth hall, where the algae are sprayed over the nets, and allowed to grow while dripping from one net to the next.

Prof Grobbelaar’s main task was to manipulate growth conditions in such a way that the microalgae converted their stored energy into lipids, and to establish protocols to run the various photobioreactors. This was accomplished in just over two months of intensive experimentation, and included modifications to the designs of the photobioreactors, the microalgal strain selection, and the replacement of the nutrient broth with a so-called balanced one.

Prof Grobbelaar has no illusions regarding the economic feasibility of the project.  However, with continued research, optimisation, and utilisation of waste resources, it is highly likely that the first long-haul flights using microalgal-derived kerosene will be possible in the not-too-distant future.

Prof Grobbelaar from the Department of Plant Sciences, although partly retired, still serves on the editorial boards of several journals. He is also involved with the examining of PhDs, many of them from abroad.  In addition, he assisted the Technology Innovation Agency of South Africa in the formulation of an algae-biotechnology and training centre.  “The chances are good that such a centre will be established in Upington, in the Northern Cape,” Prof Grobbelaar said.

 

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