scholarly journals Consumer perceptions and demand for biofortified sweet potato-based biscuit: The case of Akarabo golden power biscuit in Rwanda

2014 ◽  
Vol 14 (63) ◽  
pp. 8941-8955
Author(s):  
JJ Okello ◽  
◽  
K Sindi ◽  
J Low ◽  
◽  
...  
Keyword(s):  
Vitamin A ◽  
Willingness To Pay ◽  
Sweet Potato ◽  
Low Income ◽  
Vitamin A Deficiency ◽  
Value Added ◽  
Consumer Perceptions ◽  
Income Groups ◽  
Orange Fleshed Sweet Potato ◽  
The Way

Certain varieties of sweet potato , especially orange -fleshed, are being promoted as part of the strategy to combat vitamin A deficiency in children and pregnant mothers. However , the consumption of sweet potato is more widespread in rural households where it is mainly boiled or eaten raw. The lack of value addition exclude s majority of urban and higher income consumers who consider sweet potato an inferior product . At the same time low income urban households that would be interested in consuming sweet potatoes are not able to receive regular supplies from the rural producing are as due to perishability and bulkiness of the produce. This study examines consumer perception s and demand for value -added biofortified biscuit derived from the vitamin A-rich orange fleshed sweet potato in Rwanda. Specifically, it assesses consumer perceptions and preference for biofortified biscuit, consumer willingness to pay for biofortified biscuit and consumers ’ rating of the biofortified biscuit. It uses data from 1085 consumers stratified by income level s drawn from consumers in several urban market s of Rwanda . The study finds very favorable rating of the taste, color, packaging, looks, and sweetness for the biofortified biscuit . It also finds higher willingness to pay (WTP) for the biofortified biscuit among consumers from low and low/middle income groups. However, the study finds mixed results of WTP for the biofortifed sweet potato among consumers in the high income neigborhoods. Also, contrary to expectations, t he study finds no evidence that knowledge of vitamin A increases consumer rating for the biofortified biscuit, suggesting that the promotion campaigns did not change the way consumers perceive the biofortified sweet potato , perhaps due to the way the campaign was designed . The study concludes t hat the biofortified biscuit is currently more acceptable among the low and low/middle end income categories probably because of greater promotion at these levels . However , it has a high potential for the high and medium income groups as evident from the high rating it received among these groups . The paper discusses the implications of these findings and suggests a need for more detailed studies and indepth quantitative analysis of consumer perceptions and WTP for orange -fleshed sweet potato .

scholarly journals Investigating consumer preferences and willingness to pay for Orange-fleshed Sweet potato (OFSP) juice in Rwanda

2019 ◽  
Vol 4 (1) ◽  
pp. 227-236
Author(s):  
Temesgen Bocher ◽  
Kirimi Sindi ◽  
Tawanda Muzhingi ◽  
Jean Claude Nshimiyimana ◽  
Madjaliwa Nzamwita ◽  
...  
Keyword(s):  
Vitamin A ◽  
Willingness To Pay ◽  
Sweet Potato ◽  
Consumer Preferences ◽  
Vitamin A Deficiency ◽  
Public Health Problem ◽  
Major Public Health Problem ◽  
Nutritional Information ◽  
Pineapple Juice ◽  
Orange Fleshed Sweet Potato

AbstractWhile micronutrient malnutrition has become a major public health problem in developing countries, consumption of biofortified foods such as orange fleshed sweet potato has proved to be cost effective means of addressing vitamin A deficiency. This paper describes consumer preferences and willingness to pay for Orange fleshed Sweet potato (OFSP) juice based on a structured survey and taste tests administered to 946 participants (384 female and 562 male) chosen at random in Rwanda. Four juices types were tested: two popular brands of 100% pineapple juice, one 100%-OFSP juice, and one 80% OFSP- 20% pineapple juice blend. Consumers ranked different attributes of each juice such as aroma, taste, color, “right” amount of sugar, and aftertaste using a Likert scale (1 to 5). Heckman two-stage probit model was used to analyze willingness to pay and a multinomial logit model was used to analyze the determinants of juice choice. Gender of the consumer, juice buying frequency, aroma, the taste of the juice, and vitamin A knowledge were positively associated with willingness to pay and juice choice. Without nutritional information on OFSP juice, the willingness to pay for the standard juices were statistically higher; but with nutritional information, the willingness to pay and choice of OFSP juice was significantly improved. It is concluded that nutrition information is an important factor influencing the acceptance and willingness to pay for OFSP juice.

Carotenoids and β-carotene in orange fleshed sweet potato: A possible solution to vitamin A deficiency

2016 ◽  
Vol 199 ◽  
pp. 628-631 ◽  
Author(s):  
Sheikh Nazrul Islam ◽  
Tania Nusrat ◽  
Parveen Begum ◽  
Monira Ahsan
Keyword(s):  
Vitamin A ◽  
Sweet Potato ◽  
Vitamin A Deficiency ◽  
Orange Fleshed Sweet Potato ◽  
Β Carotene

scholarly journals Amaranth Leaves and Skimmed Milk Powders Improve the Nutritional, Functional, Physico-Chemical and Sensory Properties of Orange Fleshed Sweet Potato Flour

Foods ◽  
2019 ◽  
Vol 8 (1) ◽  
pp. 13 ◽  
Author(s):  
Gaston Ampek Tumuhimbise ◽  
Gerald Tumwine ◽  
William Kyamuhangire
Keyword(s):  
Developing Countries ◽  
Vitamin A ◽  
Sweet Potato ◽  
Vitamin A Deficiency ◽  
Nutrition Status ◽  
Under Nutrition ◽  
Physico Chemical ◽  
Composite Flours ◽  
Skimmed Milk ◽  
Orange Fleshed Sweet Potato

Vitamin A deficiency (VAD) and under nutrition are major public health concerns in developing countries. Diets with high vitamin A and animal protein can help reduce the problem of VAD and under nutrition respectively. In this study, composite flours were developed from orange fleshed sweet potato (OFSP), amaranth leaves and skimmed milk powders; 78:2:20, 72.5:2.5:25, 65:5:30 and 55:10:35. The physico-chemical characteristics of the composite flours were determined using standard methods while sensory acceptability of porridges was rated on a nine-point hedonic scale using a trained panel. Results indicated a significant (p < 0.05) increase in protein (12.1 to 19.9%), iron (4.8 to 97.4 mg/100 g) and calcium (45.5 to 670.2 mg/100 g) contents of the OFSP-based composite flours. The vitamin A content of composite flours contributed from 32% to 442% of the recommended dietary allowance of children aged 6–59 months. The composite flours showed a significant (p < 0.05) decrease in solubility, swelling power and scores of porridge attributes with increase in substitution levels of skimmed milk and amaranth leaf powder. The study findings indicate that the OFSP-based composite flours have the potential to make a significant contribution to the improvement in the nutrition status of children aged 6–59 months in developing countries.

scholarly journals Provitamin A Carotenoids in Baked Foods From Orange-Fleshed Sweet Potato Flour Are Substantially Bioaccessible and Contribute to Vitamin A Requirements

2020 ◽  
Vol 12 (10) ◽  
pp. 132
Author(s):  
Gisèle A. Koua ◽  
Sébastien Niamké
Keyword(s):  
Vitamin A ◽  
Sweet Potato ◽  
Vitamin A Deficiency ◽  
Public Health Problem ◽  
In Vitro Digestion ◽  
Provitamin A ◽  
Total Carotenoids ◽  
Provitamin A Carotenoids ◽  
Orange Fleshed Sweet Potato

Vitamin A deficiency (VAD) remains a public health problem in developing countries. Consumption of orange-fleshed sweet potato (OFSP) varieties has been proven to be a valuable strategy for VAD alleviation. In this work, OFSP flour was incorporated into wheat flour at 15, 25, 35, and 50% (w/w) and used to prepare baked products. The bioaccessibility of provitamin A carotenoids of OFSP baking products was performed according to an in vitro digestion model. The contribution of OFSP-wheat composite baking products to vitamin A requirements was evaluated. Relatively high amounts (98.70&plusmn;2.17-144.42&plusmn;1.31 &mu;g/g DM) of total carotenoids in OFSP flours was reported in Kakamega-7-Irene, Kabode, and Covington cultivars. The recovery of provitamin A carotenoid in baking products containing 15, 25, 35, and 50% OFSP flour was 1031.04&plusmn;6.36-3364.21&plusmn;10.22 &mu;g/100 g for cupcakes and 1009.19&plusmn;10.38-4640.72&plusmn;13.43 &mu;g/100 g for cookies, respectively. The in vitro bioaccessibility of provitamin A carotenoids of OFSP composite cupcake ranged from 12.53 to 27.21% while that of OFSP composite cookies was significantly different (p ˂ 0.05) and ranged from 15.99 to 27.84%. The results also showed that cupcake and cookies containing 35% and 50% OFSP flours could be used to fight vitamin A deficiency in C&ocirc;te d&rsquo;Ivoire as they were found to meet 50 and more than 100% (161% for 100 g portion) of the recommended dietary allowance (RDA) of vitamin A for children aged 3-10 years. Finally, our results may support adoption of OFSP varieties in order to decrease the risk of vitamin A deficiency in C&ocirc;te d&rsquo;Ivoire.

The Potential of Orange-Fleshed Sweet Potato to Prevent Vitamin A Deficiency in Africa

2014 ◽  
Vol 84 (1-2) ◽  
pp. 65-78 ◽  
Author(s):  
Fekadu Gurmu ◽  
Shimelis Hussein ◽  
Mark Laing
Keyword(s):  
Vitamin A ◽  
Sweet Potato ◽  
Ipomoea Batatas ◽  
Vitamin A Deficiency ◽  
Sub Saharan Africa ◽  
African Countries ◽  
Vitamin A Status ◽  
Sub Saharan ◽  
Prevention Methods ◽  
Orange Fleshed Sweet Potato

Purpose: Vitamin A deficiency is among major health problems worldwide that leads to blindness, retarded growth and death, particularly in developing countries. In these countries, vitamin A deficiency largely affects pre-school children, pregnant and lactating mothers, and the rural poor. For instance, the predicted prevalence of vitamin A deficiency for 36 sub-Saharan African countries is 19.1 %. Methods: Different strategies, including vitamin A supplementation, food fortification and dietary diversification, have been used to combat this problem. However, these strategies are not sustainable due to their high costs. Results: Orange-fleshed sweet potato (Ipomoea batatas L. Lam) is a low priced crop, which is part of staple foods in most of sub-Saharan Africa that can be a year-round source of vitamin A. Most of the orange-fleshed sweet potato varieties contain 3000 - 16000 μg 100 g-1 of β-carotene and this contributes to 250 to 1300 μg 100 g-1 Retinol Activity Equivalents (RAE). Therefore, by using orange-fleshed sweet potato, it is possible to improve vitamin A status, increase the bio-availability of different micro-nutrients such as Fe, Zn, Ca and Mg, reduce vitamin A deficiency and hence reduce child mortality rates by 23 to 30 %. Conclusion: The article highlights the significance of vitamin A for human nutrition, the effect of vitamin A deficiency, the different prevention methods and the potential of orange- fleshed sweet potato as a food crop to prevent vitamin A deficiency.

Biofortification to combat Vitamin A deficiency sustainably through promoting Orange-fleshed Sweet Potato in eastern Uttar Pradesh

2016 ◽  
Vol 2 (1-2) ◽  
Author(s):  
Ram Chet Chaudhary ◽  
A. Gandhe ◽  
R. Kumar
Keyword(s):  
Vitamin A ◽  
Sweet Potato ◽  
Vitamin A Deficiency ◽  
Uttar Pradesh ◽  
The World Bank ◽  
High Level ◽  
Eastern Uttar Pradesh ◽  
Poor Children ◽  
Orange Fleshed Sweet Potato ◽  
Very High

India is among top few countries for Vitamin A deficiency as 60,000 children go blind annually. Other than blindness, a number of eye diseases like night blindness, bitot spot, xerothalmia and others are caused by vitamin A deficiency. More than 6% children in Uttar Pradesh suffer from clinical vitamin A deficiency. Vitamin A deficiency among poor children in Gorakhpur average to 42% (as high as 65% in 3 year age group). Government of India, supported by CIDA, Helen Keller International, Micro-nutrient Initiative, UNICEF, USAID and the World Bank distributed free vitamin A capsule. Results were positive and dramatic but met failure due costs involved, problem in distribution, and corruption. Sustainable solution with no costs to government is popularization of Orange Fleshed Sweet Potato (OFSP) varieties, which have yellow or orange flesh due to very high level of â-carotene (precursor of Vitamin A). OFSP also supply required quantity of Potassium, dietary fibre, and energy. OFSP produces more edible energy per unit and people can grow, store and consume throughout the year. Supported by Tata Trusts since last 3 years, PRDF tested more than 50 OFSP varieties and identified ST-14, CIP-440127 and VA-43 adapted to the region now popularizing its growing and consumption enjoining hundreds of farmers and thousands of school children. A cycle of multiplying healthy vines has been perfected and being practiced. A number of products of leaf and tuber like Pakora, chips, juice etc have been developed. More needs to be done on research and awareness fronts.

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