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14 March 2023 | Story Prof Frikkie Maré | Photo Supplied
Prof Frikkie Mare
Prof Frikkie Maré is the Academic Departmental Head: Agricultural Economics, University of the Free State

Opinion article by Prof Frikkie Maré, Department of Agricultural Economics, University of the Free State.
President Cyril Ramaphosa recently announced a state of disaster due to the electricity crisis and the appointment of the new Minister of Electricity in the Presidency, Dr Kgosientsho Ramokgopa. Although there are many arguments for and against the state of disaster and the position of a Minister of Electricity, I think all South Africans agree that drastic measures must be taken to improve the current situation. However, I do not think the state of disaster, or the Minister of Electricity will bring any quick fixes to the table, and therefore we have to assume the crisis will remain in the short to medium term.

The Cause of the Crisis

As South Africans, our biggest crisis at this stage is load shedding. We are confronted with darkness daily, or even twice or thrice a day. Although the impact of load shedding varies according to the time of day it is implemented, it generally hinders us from doing our work, preparing food, and relaxing in front of the television after work. It directly impacts the quality of life of those who need electricity for oxygen machines for them to breathe. It causes damage to our electrical appliances, especially due to power surges when the electricity is turned back on. In short, load shedding is disrupting our lives. It is a nuisance we do not need, and the sooner it ends, the better.

Load shedding may be be a crisis for us as citizens, but it is Eskom’s solution to keep the national grid from collapsing. Thus, the real cause of the crisis is not load shedding but the inability of Eskom to supply enough electricity to meet the demand. The second big concern is the rising cost of electricity in South Africa. From 2007 to 2022, electricity prices increased by 653% in an attempt by Eskom to increase revenue to try and catch up with its heavy debt burden while simultaneously trying to maintain the current power stations and add some new generation capacity.

The problem

South Africa, up until load shedding started in 2007, was always praised as one of the countries in the world with the most stable electricity supply, and electricity was priced among the lowest in the world. Our economy thus developed around the national grid and is heavily reliant on it. Given the above, our food system faces three problems. First and most visible is load shedding that is causing interrupted national power supply and increasing production and processing costs as fuel generators and solar power must be relied on. Secondly, the cost of food production, processing, and distribution increases sharply as national electricity prices increase. Third, new investments in the food chain are discouraged as it is heavily reliant on electricity, which there is not enough of.

The impact

Over the last number of months, the media was full of the impact of load shedding on the food system in South Africa. Visually it ranged from photos and videos of withered irrigated crops which failed as there were not enough hours of electricity to supply water. There were pictures of chicken farms full of dead broilers that died when the heating and ventilation systems could not function during load shedding. Many articles also warned that load shedding would hurt food security in South Africa as it would not be possible to produce or process enough food.

These reported impacts of load shedding on food security caused quite a frenzy among consumers as people tend to run with what is announced in headlines without reading or understanding the context. Consumers immediately fear a situation where there will be insufficient food in South Africa as the headlines read that food security is under pressure.  

Yes, although all the photos, videos and articles in the news might be true and certainly do impact food security, we must also remember that food security is a combination of the availability and affordability of food.  

The impact of load shedding on food production depends on the type of production system. While load shedding has a minimal impact on extensive red meat production, it can be detrimental to intensive systems like poultry production, especially if electrical heating is used to regulate the temperature. It also negatively affects producers relying on irrigation to water their crops as the quality and quantity of the crop will be influenced.

The effect of load shedding can be severe on certain primary producers and even cause farming operations to close. Still, it will not necessarily result in a food shortage in the country as our primary agricultural sector is diverse. However, the price of certain commodities will increase due to a lower supply and higher production costs, negatively influencing food affordability.

The larger problem with load shedding can be found in terms of processing the food, especially fresh produce reliant on a sustained cold chain. For food safety and quality reasons, fresh produce must be kept at constant temperatures, and processors and distributors thus have no choice but to use expensive private electricity generation, further pushing up the cost of food.

Another problem is that, for example, the cold rooms of processors are connected to generators, as power failures might happen even when load shedding is not a problem. Still, the processing line cannot operate without grid-supplied electricity. Although there is thus enough food in the country on a commodity level, these commodities cannot be processed into final food products as fast as in the past. This bottle-neck effect further reduces the supply of food products and increases their price.

We often forget about the impact of load shedding on the consumers’ food choices. If you need electricity to prepare food, the availability of electricity at the time you need to prepare it will affect what you eat. The problem is that more affordable foods usually take longer to prepare, while the quick-to-prepare, ready-to-eat fast foods are expensive. The higher demand for these more expensive products due to load shedding puts further upward pressure on the price of food.

So where are the monsters?

The electricity crisis impacts all roleplayers in the food value chain, from primary producers to final consumers. Although load shedding is the most visible monster here, the fast-increasing price of electricity and the general electricity shortage that discourages future investment are also lurking in the dark and contributing to problems in the overall food system. In my opinion, the electricity crisis currently does not yet threaten food security in terms of availability. Still, it is creating a monster in terms of food prices (inflation) and thus making food less affordable.  

Although private solar power and fuel generators do assist in alleviating some of the influences of the electricity crises, it is not the solution. The problem with solar power, for users requiring large amounts of electricity, is that it is too expensive to install storage capacity (batteries) to use during the night. You also have a problem when it is overcast and rainy, so solar is a mere addition to supplement the national grid during the day. On the other hand, fuel generators can supply electricity 24 hours a day. Still, only the fuel cost to generate 1kW is double what Eskom charges, making it too expensive in the long run.

In my view, the only option to ensure the sustainability of the food value chain in future is to get the national electricity grid functional again. There are many short-term solutions, but none is currently sustainable enough to provide affordable energy needs. Although it will certainly take time to get Eskom fully functional again, I do not think we will run out of food in South Africa. However, we must tighten our belts to be able to afford food while the monsters lurk in the dark.


For more information contact Frikkie Maré at MareFA@ufs.ac.za

News Archive

Mushrooms, from gourmet food for humans to fodder for animals
2016-12-19

Description: Mushroom research photo 2 Tags: Mushroom research photo 2 

From the UFS Department of Microbial Biochemical and
Food Biotechnology are, from left: Prof Bennie Viljoen,
researcher,
MSc student Christie van der Berg,
and PhD student Christopher Rothman
Photo: Anja Aucamp

Mushrooms have so many medicinal applications that humans have a substance in hand to promote long healthy lives. And it is not only humans who benefit from these macrofungi growing mostly in dark spaces.

“The substrate applied for growing the mushrooms can be used as animal fodder. Keeping all the medicinal values intact, these are transferred to feed goats as a supplement to their daily diet,” said Prof Bennie Viljoen, researcher in the Department of Microbial, Biochemical and Food Biotechnology at the UFS.

Curiosity and a humble start
“The entire mushroom project started two years ago as a sideline of curiosity to grow edible gourmet mushrooms for my own consumption. I was also intrigued by a friend who ate these mushrooms in their dried form to support his immune system, claiming he never gets sick. The sideline quickly changed when we discovered the interesting world of mushrooms and postgraduate students became involved.

“Since these humble beginnings we have rapidly expanded with the financial help of the Technology Transfer Office to a small enterprise with zero waste,” said Prof Viljoen. The research group also has many collaborators in the industry with full support from a nutraceutical company, an animal feed company and a mushroom growers’ association.

Prof Viljoen and his team’s mushroom research has various aspects.

Growing the tastiest edible mushrooms possible
“We are growing gourmet mushrooms on agricultural waste under controlled environmental conditions to achieve the tastiest edible mushrooms possible. This group of mushrooms is comprised of the King, Pink, Golden, Grey, Blue and Brown Oysters. Other than the research results we have obtained, this part is mainly governed by the postgraduate students running it as a business with the intention to share in the profit from excess mushrooms because they lack research bursaries. The mushrooms are sold to restaurants and food markets at weekends,” said Prof Viljoen.

Description: Mushroom research photo 1 Tags: Mushroom research photo 1 

Photo: Anja Aucamp

Natural alternative for the treatment of various ailments
“The second entity of research encompasses the growth and application of medicinal mushrooms. Throughout history, mushrooms have been used as a natural alternative for the treatment of various ailments. Nowadays, macrofungi are known to be a source of bioactive compounds of medicinal value. These include prevention or alleviation of heart disease, inhibition of platelet aggregation, reduction of blood glucose levels, reduction of blood cholesterol and the prevention or alleviation of infections caused by bacterial, viral, fungal and parasitic pathogens. All of these properties can be enjoyed by capsulation of liquid concentrates or dried powdered mushrooms, as we recently confirmed by trial efforts which are defined as mushroom nutriceuticals,” he said.

Their research focuses on six different medicinal genera, each with specific medicinal attributes:
1.    Maitake: the most dominant property exhibited by this specific mushroom is the reduction of blood pressure as well as cholesterol. Other medicinal properties include anticancer, antidiabetic and immunomodulating while it may also improve the health of HIV patients.
2.    The Turkey Tail mushroom is known for its activity against various tumours and viruses as well as its antioxidant properties.
3.    Shiitake mushrooms have antioxidant properties and are capable of lowering blood serum cholesterol (BSC). The mushroom produces a water-soluble polysaccharide, lentinan, considered to be responsible for anticancer, antimicrobial and antitumour properties.
4.    The Grey Oyster mushroom has medicinal properties such as anticholesterol, antidiabetic, antimicrobial, antioxidant, antitumour and immunomodulatory properties.
5.    Recently there has been an increased interest in the Lion’s Mane mushroom which contains nerve growth factors (NGF) and may be applied as a possible treatment of Alzheimer’s disease as this compound seems to have the ability to re-grow and rebuild myelin by stimulating neurons.
6.    Reishi mushrooms are considered to be the mushrooms with the most medicinal properties due to their enhancing health effects such as treatment of cancer, as well as increasing longevity, resistance and recovery from diseases.


Description: Mushroom research photo 3 Tags: Mushroom research photo 3


Valuable entity for the agricultural sector
Another research focus is the bio-mushroom application phenome, to break down trees growing as encroaching plants. This research is potentially very valuable for the agricultural sector in the areas where Acacia is an encroaching problem. With this process, waste products are upgraded to a usable state. “It is therefore, possible to convert woody biomass with a low digestibility and limited availability of nutrients into high-quality animal fodder. By carefully selecting the right combination of fungus species to ferment agro-wastes, a whole host of advantages could become inherently part of the substrate. Mushrooms could become a biotechnological tool used to ‘inject’ the substrate that will be fed to animals with nutrition and/or medicine as the need and situation dictates,” said Prof Viljoen.

 

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