Ensuring the Supply of and Creating Demand for a Biofortified Crop with a Visible Trait: Lessons Learned from the Introduction of Orange-Fleshed Sweet Potato in Drought-Prone Areas of Mozambique

Low, Jan; Arimond, Mary; Osman, Nadia; Cunguara, Benedito; Zano, Filipe; Tschirley, David L.

doi:10.1177/15648265070282s205

Cited by 64 publications

(73 citation statements)

References 9 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Additionally, OFSP contained greater concentrations of fat, protein, and dietary antioxidants than WFSP, underscoring the potential benefits of replacing white with orange varieties (11,23). Changing behavior at the family and community levels can require substantial investment in nutrition education and infrastructure (46), but such effort can achieve the desired positive impact on VA status as demonstrated by a recent intervention with OFSP in Mozambique (14). Introduction of OFSP to households, integrated with increasing access to OFSP vines and improved nutrition knowledge that created greater demand for OFSP, increased provitamin A intake and serum retinol concentrations among children living in the region.…”

Section: Figurementioning

confidence: 92%

Sweet Potato β-Carotene Bioefficacy Is Enhanced by Dietary Fat and Not Reduced by Soluble Fiber Intake in Mongolian Gerbils

Mills

Tumuhimbise

Jamil

et al. 2009

The Journal of Nutrition

View full text Add to dashboard Cite

Orange-fleshed sweet potato (OFSP) is an important source of beta-carotene (betaC). Provitamin A bioefficacy from plant foods is influenced by dietary fat and fiber. We fed 3% OFSP powder diets with varying amounts of fat and soluble fiber to vitamin A (VA)-depleted Mongolian gerbils (n = 85) for 3 wk (8 groups, n = 10/group; control, n = 9) following a baseline kill (n = 6). OFSP diets differing in fat (3, 6, and 12%) contained 0.24% soluble fiber. Two additional 3% OFSP diets contained 6% fat and 3 or 9% white-fleshed sweet potato (WFSP) powder with soluble fiber contents of 0.42 and 0.80%, respectively. Control, VA-, and betaC-supplemented groups were included. Simulated digestion experiments compared the bioaccessibility of betaC from boiled vs. oil stir-fried OFSP. All OFSP diets maintained VA status and 12% fat and WFSP-added diets improved VA status above baseline (P < 0.05). Bioefficacy, as bioconversion factors, in gerbils fed 12% fat (3.5 +/- 1.4 microg betaC:1 microg VA) was improved over the 3% fat and betaC groups (6.5 +/- 3.7 and 6.7 +/- 3.7 microg betaC:1 microg VA, respectively) (P < 0.05) but did not differ from WFSP-added groups or the 6% fat group with no WFSP. Stir-frying doubled the efficiency of betaC incorporation into micelles during small intestinal digestion in support of the stimulatory effect of dietary fat on bioefficacy in vivo. Soluble fiber intake derived from WFSP did not influence bioefficacy. Replacing WFSP with OFSP will affect VA status if adopted by target groups.

show abstract

Section: Figurementioning

confidence: 92%

Sweet Potato β-Carotene Bioefficacy Is Enhanced by Dietary Fat and Not Reduced by Soluble Fiber Intake in Mongolian Gerbils

Mills

Tumuhimbise

Jamil

et al. 2009

The Journal of Nutrition

View full text Add to dashboard Cite

show abstract

“…It has been estimated that biofortified cassava with a b-carotene content of 20 mg/1 kg fresh weight would achieve a positive impact on night blindness in African populations (Montagnac et al, 2009a). People are generally conservative in their food preferences; however, the successful introduction of orange-fleshed sweet potato in Mozambique suggests that a similar consumer demand for high pro-vitamin A cassava could be created (Low et al, 2007).…”

Section: Prospects For Cassava Biotechnologymentioning

confidence: 99%

Cassava: An appraisal of its phytochemistry and its biotechnological prospects

et al. 2010

View full text Add to dashboard Cite

“…The three pillars of the integration [26] are 1) agriculture-with OSP providing a low cost, easy to grow bioavailable source of vitamin A; 2) nutrition-both producers and consumers need to be informed of the nutritional value of OSP (demand creation campaigns) and change agents need to work with caregivers to ensure they have core, basic knowledge of good dietary and feeding practices and how to incorporate OSP effectively into the young child diet as well as their own; and 3) marketing-opportunities to commercialize OSP surplus stimulates OSP uptake and rates of permanent adoption. Managing the "seed system" based on vines that are easily shared among growers and hence, typically of limited interest to private sector seed companies, is critical to success.…”

Section: Delivery Strategiesmentioning

confidence: 99%

Sweet potato development and delivery in sub-Saharan Africa

Low¹,

Ball²,

Magezi³

et al. 2017

AJFAND

View full text Add to dashboard Cite

In sub-Saharan Africa, more than 40% of children under five years of age suffer from vitamin A deficiency. Among several interventions in place to address vitamin A deficiency is biofortification, breeding vitamin A into key staple crops. Staple crops biofortified with beta-carotene, the precursor to vitamin A, are orange in color. Given the natural occurrence of high levels of beta-carotene in many sweet potato varieties, breeding progress for biofortified orange sweet potato (OSP) has been much faster than for the other vitamin A enhanced staples. Nearly 3 million households have been reached with OSP. This paper reviews key factors influencing the uptake of OSP, the breeding investment, five key delivery approaches that have been tested in the region and efforts to broaden government and other stakeholder engagement.

show abstract

Ensuring the Supply of and Creating Demand for a Biofortified Crop with a Visible Trait: Lessons Learned from the Introduction of Orange-Fleshed Sweet Potato in Drought-Prone Areas of Mozambique

Abstract: Background. Orange-fleshed sweet potato (OFSP) is a promising biofortified crop for sub-Saharan Africa because it has high levels of provitamin

Cited by 64 publications

References 9 publications

Sweet Potato β-Carotene Bioefficacy Is Enhanced by Dietary Fat and Not Reduced by Soluble Fiber Intake in Mongolian Gerbils

Sweet Potato β-Carotene Bioefficacy Is Enhanced by Dietary Fat and Not Reduced by Soluble Fiber Intake in Mongolian Gerbils

Cassava: An appraisal of its phytochemistry and its biotechnological prospects

Sweet potato development and delivery in sub-Saharan Africa

Contact Info

Product

Resources

About