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26 March 2018 Photo Pixabay
Back to the drawing board to save water
We’ve managed to damage nature’s ‘filter’ with air, ocean, and soil pollution, and by destroying wetlands.

Dr Cindé Greyling, a University of the Free State (UFS) DiMTEC (Disaster Management Training and Education Centre for Africa) alumni, studied drought mitigation with a strong focus on communicating important water-saving information. 

Can we run out of water?
Yes, and no, says Dr Greyling. “To our knowledge, water is not ‘leaking’ through our atmosphere. We have what we have, but that doesn’t mean we will have enough clean, fresh water forever. Nature has a magnificent way of purifying water through the water cycle. We, on the other hand, must use a lot of money and energy to purify water. Also, we’ve managed to damage nature’s ‘filter’ with air, ocean, and soil pollution, and by destroying wetlands. The other problem is a simple supply and demand scenario. More people will need more water, but not only that, population growth calls for industry development and increased food supplies – all of which require more water.”    

A war over water
Besides some Hollywood impressions, it is difficult to imagine a war over water, but it is possible. “Some experts are convinced that we are heading there, and others claim that such tensions already exist. Personally, I don’t favour these kinds of shock tactics (or truths) – social research has shown us that it rarely leads to behavioural changes. We can learn a lot from what was has been done in Cape Town. Although we all think people were bombarded with ‘Day-Zero’-scares, they were actually encouraged to adapt their behaviour with a communication campaign that hardly ever used the term ‘Day-Zero’. This approach mobilised citizens to reach record lows of water usage.” 

Adapt a new normal
Dr Greyling encourages the “new normal” set in motion by Capetonians. “Water consciousness is needed, even when the rain comes again. We’ve taken water for granted for too long. As consumers, we have the power to turn this situation around – drop for drop. Be aware about the amount of water you use, how you use it, and for what. Keep in mind that any wastage and pollution (of ‘dry’ things) also wastes and pollutes water. Generally, we need to behave better regarding consumption.”  

News Archive

UFS researchers discover the many uses of the cactus pear
2015-02-17

UFS researchers discover the many uses of the cactus pear

For many South Africans, the dry, arid areas in many parts of the country became synonymous with cactus pear growing at random in the natural veld. For some the fruit of a cactus pear, if chilled really well, is a delicious snack on a hot summer’s day. But few actually know that these cacti can be money growing wild in the veld.

For the past 15 years, scientists  at the University of the Free State (UFS) have been looking into the benefits and many uses of the cactus pear. This project  has grown steadily in vision and dimension, and today the UFS is recognised as a world-leading institution in the world conducting multi-disciplinary research on spineless cactus pear.

Dr Maryna de Wit, from the Department of Microbial, Biochemical and Food Biotechnology, together with Prof Wijnand Swart from the Department of Plant Sciences and Prof HO de Waal from the Department of Animal, Wildlife and Grassland Sciences, determined the nutritional and, more importantly, the commercial and viable uses of the cactus pear.

The aspect of human consumption is now giving the cactus pear the status of ‘superfood’.

Dr De Wit and her team have successfully made various products using either the cactus pear fruit, the cladode (also referred to as the leaf) and the mucilage (the sticky liquid  in the cladode).

Some of these products are:

  • flour for baking carrot cake, biscuits and health breads
  • jam, fruit juice and canned fruit
  • sweets – marshmallows and Turkish delight
  • stir-fry, salads and other cooked dishes.

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