A mighty color fights childhood blindness

An initiative that at first simply sought to increase the productivity and the visual appeal of sweet potatoesresulted inabiofortification strategy to improve the nutrition of southern Brazil.

Context of the story

Vitamin A deficiency is the most common cause of preventable childhood blindness among children in poor areas of southern Brazil.
Families in the region meet a large part of their daily needs for vitamin A by consuming yellow and orange vegetables such as sweet potatoes, which contain carotenoids that the body converts into vitamin A.
Becauseof its agronomic traits and itsubiquity in the Brazilian diet, the sweet potato was chosen by a group of researchers as one of the vegetables to participate in the genetic improvement plan that in 2011 resulted in BRS Amélia, a variety biofortified with carotenoids.

A support network for food safety

The implemented initiative

The BioFORT Network (Red BioFORT) was created in Brazil in 2003 with the aim of developing foods rich in micronutrients, particularly provitamin A.
Led by Embrapa and supported by HarvestPlus — a world leader in biofortification — and the CIAT, the network is made up of universities, producers, and public and private organizations committed to food security.
Drawing on two decades of collaborative research, the Network turned to crop biofortification as a strategy to improve the nutrition of the population.

A social approach to genetic improvement

The technological solution

The development of BRS Amélia took almost 20 years’ worth of teamwork.
The cross between the best specimens from the germplasm bank produced the variety with the highest carotenoid content and the best agronomic performance.
To promote acceptance of BRS Amélia, the network invited beneficiaries to participate in the development process and carryout tests and validations on their farms.
Participants gathered in a series of workshopswhere they learned good crop management practices and tasted the newsweet potato in order to assess its acceptability.
The network licensed the multiplication of materials and guaranteed the genetic integrity and phytosanitary conditions for cultivation on farms.
The project also included the training of other sectors of the community, especially school cooks.
Finally, the project promoted the development of value-added products based on BRS Amélia, such as chips, baby sweet potatoes, cookies, sweets and ice cream, among others.

“Today, the orange-fleshed sweet potato is an important part of a family’s diet and improves the income of small farmers.”
Andrea Mattos, farmer.

Participating countries

Type of project


The BRS Amélia sweet potato has had a noticeable positive impact on the region's population, who consumed varieties with negligible carotenoid content until a decade ago.
BRS Amélia surplus is sold at local fairs and it suppliesstock to institutional food procurement programs. This commercial channel promotes access to more nutritious food and improves the economy of farming families, helping to reduce rural flight.
Between 2011 and 2018, the cultivated area increased from 2 to 2,000 ha.
Crop yield doubled in relation to the traditional variety, reaching 32,000 kg / ha with the BRS Amélia variety.

Relevant data

Carotenoid content of BRS Amélia and tradicional sweet potato varieties

Carotenoid content of BRS Amélia and tradicional sweet potato varieties
cultivated area in Rio Grande do Sul
cultivated area in Rio Grande do Sul
family farmers benefited
family farmers benefited
indirect beneficiaries
indirect beneficiaries
 of carotenoids per 100 g of pulp
of carotenoids per 100 g of pulp

A BRS Amélia for the Tropics

BRS Amélia seedlings sold by accredited nurseries

BRS Amélia seedlings sold by accredited nurseries

Participating Organizations

Empresa Brasileña de Investigación Agropecuaria (EMBRAPA) - Brasil

Project Information

Zero Hunger
Good health and well-being
Reduced inequalities
Responsible consumption and production
Partnerships for the goals

Geolocated Map


Project leader Brazil

José Luiz Viana de Carvalho

Food Science and Technology
E-mail: fontagro@fontagro.org