Tag Archives: vegetables

Jean Paul Nageri (middle) with his award for Most Innovative Export company early this year. Third Right is Uganda’s Prime Minister Robinah Nabbanja while second-right is the Head of the European Delegation to Uganda, Ambassador Jan Sadek. Second-left is Uganda’s Minister for Investment, Evelyne Anite.

UCU alum’s innovation reduces post-harvest losses


Jean Paul Nageri (middle) with his award for Most Innovative Export company early this year. Third Right is Uganda’s Prime Minister Robinah Nabbanja while second-right is the Head of the European Delegation to Uganda, Ambassador Jan Sadek. Second-left is Uganda’s Minister for Investment, Evelyne Anite.
Jean Paul Nageri (middle) with his award for Most Innovative Export company early this year. Third Right is Uganda’s Prime Minister Robinah Nabbanja while second-right is the Head of the European Delegation to Uganda, Ambassador Jan Sadek. Second-left is Uganda’s Minister for Investment, Evelyne Anite.

By Kefa Senoga
In 2017, the father of Jean Paul Nageri planted more than 100 acres of bananas in Busia, eastern Uganda. As is usually the norm, towards harvest time, a middleman promised to buy all the bananas at harvest. The harvest time came, but the middleman never showed up. The result? Most of the bananas either got rotten in the garden or were sold at a give-away price.

The pain of that loss was so unbearable for Nageri that the next year, he was in the laboratory, working out a solution to mitigate the gravity of the depletion his father suffered. He suspected there was a solution, but did not know exactly what it was. And the tests in the laboratory led him to something that was more like putting into practice the course he had studied at Uganda Christian University (UCU), where he received a Bachelor of Agricultural Science and Entrepreneurship. 

Nageri explaining his innovation at a conference.
Nageri explaining his innovation at a conference.

Nageri sought to extend the shelf life of many fruits and vegetables by slowing down their rate of spoilage while being kept at room temperature without any form of refrigeration – a move that democratizes food storage and removes barriers to enable everyone to keep food fresh, regardless of whether you have a cold room or not. In Uganda, room temperature is about 25 degrees Celsius (77 Fahrenheit).

So, how does Nageri’s innovation work?

He explained that using the skins of oranges, mangoes, bananas and other fruits in the lab, he was able to extract compounds, which he later turned into powder. The powder is blended with water, which is then used for coating the fruits and vegetables. The coating, which he has named Ka Fresh and is produced by his firm, Sio Valley Technologies, is edible.

“Most of the knowledge I am applying now is what I obtained in class at the university,” he said. “I am working with other scientists who are also applying the same knowledge in biotechnology.”

Nageri with his jam products during his university days
Nageri with his jam products during his university days

For this innovation, Sio Valley Technologies was early this year awarded the Most Innovative Export company at the third annual Uganda/EU Business Summit. Nageri received the award from Uganda’s Prime Minister Robinah Nabbanja. The Head of the European Union Delegation to Uganda, Ambassador Jan Sadek, was also present at the awards gala.  

The World Food Program estimates that as of last year, more than 333 million people in the world were facing acute levels of food insecurity; they did not know where their next meal would come. The situation is compounded by the fact that the cost of delivering food assistance was at an all-time high because of the increase in the prices of food and fuel.

Despite the hunger situation, the Food and Agriculture Organization of the United Nations estimates that 30-40% of total food production is lost before it reaches the market. But with the Ka Fresh solution, Nageri aims to overcome this challenge, so that farmers can have more bargaining power over their produce while in the market without fear of it getting rotten while on the shelf.

Some fruits and vegetables that have been coated with Nageri’s solution, he says, are now able to stay fresh for up to three times their natural shelf life. Nageri says tests in the laboratory have indicated that tomatoes that have been coated with Ka Fresh, for example, are able to stay for more than 70 days under room temperature without refrigeration.

Nageri’s innovation should come as good news for exporters who are currently scratching their heads for solutions to the rising cost of air freight. Currently, according to the World Bank, it costs 12 to 16 times more to transport a commodity through air than sea and yet exporters opt for air transport because some commodities cannot last the more than 30 days it takes most of the ships to travel from African ports to Europe.

The journey to the Ka Fresh innovation saw Nageri team up with a friend, Lorna Orubo, to make tomato jam as a student at UCU and then mayonnaise, as his final-year project to meet the requirements for the award of his degree.

 “If you are building the right solution to a challenge, capital will always follow you and the right people will always want to surround themselves with you,” Nageri says, noting that for now, he is more focused on fine-tuning his innovation than looking at what he stands to benefit from it.

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Jovan Kyambadde, teaching assistant, UCU Department of Agricultural and Biological Science, with nakati from the Mukono campus planting area (Photo by UCU Student Samuel Tatambuka)

Sub-Saharan Africa vegetable makeover part of what makes UCU best at exhibition


Jovan Kyambadde, teaching assistant, UCU Department of Agricultural and Biological Science, with nakati from the Mukono campus planting area (Photo by UCU Student Samuel Tatambuka)
Jovan Kyambadde, teaching assistant, UCU Department of Agricultural and Biological Science, with nakati from the Mukono campus planting area (Photo by UCU Student Samuel Tatambuka)

NOTE: Uganda Christian University (UCU) captured first place among 48 higher education institutions in the 11th Annual Exhibition of the National Council for Higher Education (NCHE) in Uganda in March. Among displays representing UCU and contributing to this honor was the nakati experiment described in this article.

 By Patty Huston-Holm

Nakati juice (Photo by UCU Student Samuel Tatambuka)
Nakati juice (Photo by UCU Student Samuel Tatambuka)

What’s liquid, full of vitamins, green and with a name common to most East Africans?

Nakati juice.

Ummm. Yes, but perhaps it needs another title.  While some Ugandans have fond childhood memories of chewing onnakati as their parents wove a tale of how it would increase their intelligence, most turn up their noses at the green, leafy vegetable’s bitter taste and the remembrance of times when the family could afford little else.

Nakati, which also is known as African eggplant, needs to rise above its bad reputation, according to two Uganda Christian University (UCU) Food Science and Technology students and their teaching assistant. They aim to do just that by using it as the main ingredient in beverage and food recipes that reinforce nutritional value and good taste.

Jovan Kyambadde, teaching assistant, UCU Department of Agricultural and Biological Science, and students Athieno Sheilla and Alexis Ossiya, explain that the nutrition part is that nakati is full of iron and vitamins. Adding sweet-tasting ingredients masks the unpleasant flavor. After dodging raindrops to pluck nakati leaves from their Mukono campus garden and purchasing fruit outside the campus gate on the afternoon of March 6, they chopped, cut and blended the juice, sharing a not-so-secret recipe.

  • Four medium size mangos and one-fourth of a pineapple for flavor, one lemon for increased vitamin C and preservative, one freshly picked bunch of nakati (main ingredient) and honey for sweetener.
Nakati juice ingredients(Photo by UCU Student Samuel Tatambuka)
Nakati juice ingredients(Photo by UCU Student Samuel Tatambuka)

Nakati is the main ingredient because it has certain special health benefits such as cancer-fighting compounds, and anti-aging properties, and aids proper bone and brain development. Mangoes and pineapples likewise are rich in vitamins and antioxidants that help to prevent cancer, improve skin complexion and greatly boost immunity.

The taste-testers on this day were five nearby students, who gave mixed reactions about thickness, sweetness and whether they would prefer this no-added-sugar, vegetable and fruit juice over the more common, sugar-added, fruit-only beverages.

“We plan to do more testing with students in the large cafeteria,” Sheilla said. “We think we could make money and help others do it.”

While one end result is making money for the inventors and healthier lifestyles for their customers, this project also is about helping Uganda’s local farmers with their profits, Jovan explained, adding, “Everywhere you look in Uganda, there’s nakati.”

The students prepared the drink using an electric blender. But for locals without electricity and a mechanical mixer, the juice still can be made with added shredding, pounding and hand pressure, using a sieve to filter out the juice.

Under the title “Better Vegetables, Better Lives,” the UCU Department of Agricultural and Biological Science works with a dozen other partners to improve production and use of African indigenous vegetables for greater nutrition and income.  The plan is to not only share nakati products on the university campus, but also to teach local farmers how to do the same.

According to UCU Professor Elizabeth Balyejusa Kizito, changing dietary and lifestyle preference is one main reason that vegetables like nakati and another green leafy vegetable called doodo are being cast aside for less indigenous and less healthy fried chips and samosas. Sub-Saharan children have the highest rates of anemia and malnutrition in the world. UCU is on an action research mission to change that.

Each Wednesday morning, the students and staff of the Department of Agriculture and Biological Sciences at UCU board a bus, and after a 45-minute drive, are dropped off to work with local farmers.

“The farmers have come to regard themselves as university teachers, which they are in that they put our students’ learning in real context,” Jovan said. “At the same time, our students are teaching the farmers what they know about crop rotation, germination, higher yield and marketing.”

Nakati, for example, is going to waste when it could be used for juice, biscuits and other products. In addition to experimentation with nakati beverages, the students are exploring use of the vegetable with g-nuts and other ingredients for snacks.

“When I was a little girl, I was told that eating nakati would make me more intelligent,” Sheilla said. “I know now that’s not true, but using nakati in recipes is pretty smart.”

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To support this program or others at UCU, go to www.ugandapartners.org and click on the “donate” button or contact Uganda Christian University Partners Executive Director, Mark Bartels, at mtbartels@gmail.com