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.

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±2.17-144.42±1.31 μg/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±6.36-3364.21±10.22 μg/100 g for cupcakes and 1009.19±10.38-4640.72±13.43 μg/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 Côte d’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 Côte d’Ivoire.

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 Knowledge, perception and utilization of biofortified cassava and orange-fleshed sweet potato (OFSP) in selected rural areas in Nigeria

2021 ◽  
Vol 21 (05) ◽  
pp. 18019-18034
Author(s):  
Chinwe Adaugo Uzokwe ◽  
◽  
GO Iheme ◽  
OU Oteh ◽  
MC Ewude ◽  
...  
Keyword(s):  
Sweet Potato ◽  
Rural Areas ◽  
Vitamin A Deficiency ◽  
Demographic Data ◽  
Public Health Problem ◽  
Sampling Technique ◽  
Major Public Health Problem ◽  
Cross Sectional ◽  
Study Results ◽  
Orange Fleshed Sweet Potato

Vitamin A deficiency is a major public health problem in Nigeria. Staple crops are targeted by biofortification efforts because they possess low micronutrient density and are consumed in large quantities by a large proportion of poor households. This study was designed to assess the knowledge, perception and utilization of biofortified cassava and orange-fleshed sweet potato in selected Local government Areas in Abia and Imo States. The study was descriptive and cross-sectional in design. A total of 710 respondents were selected using a multi-stage sampling technique. A structured interviewer-administered questionnaire was used to elicit the required information. Statistical analysis was performed using descriptive statistics(frequency, percentage, mean and standard deviation)and inferential(correlation)analysis. Socio-demographic data revealed a preponderance of females, married, well-educated and working-class respondents. Monthly income above ₦29,000(US$ 70.54) and household size of 4-6 members were reported in 53.5% and 48.6% of the respondents. Study results further revealed that some (34.9%)of the respondents had good knowledge, while 46.1% and 19.0% had an average and poor knowledge of biofortified staples, respectively. Orange fleshed sweet potatoes and biofortified cassava were purchased at least once monthly by 73.7% of the respondents, however 16.5% and 27.5% of the respondents consumed these biofortified staples on a daily and weekly basis. Low positive perception towards the consumption (27.5%), benefits (39.6%) and barriers (16.9%) of utilizing studied biofortified staples was reported. A positive correlation was observed between respondents’ knowledge of biofortified staples and their benefits perception (p = 0.003), purchase (p =0.001) and consumption (p= 0.001) frequency.Therefore, while a good number of the respondents were fairly knowledgeable about the studied biofortified staples, it significantly influenced the perception and utilization of these staples, despite being reportedly low. Therefore, increased sensitization, price subsidy and availability of these biofortified staples will help improvetheir acceptance and utilization among rural households.

scholarly journals SEANUTS: the nutritional status and dietary intakes of 0.5–12-year-old Thai children

2013 ◽  
Vol 110 (S3) ◽  
pp. S36-S44 ◽  
Author(s):  
Nipa Rojroongwasinkul ◽  
Kallaya Kijboonchoo ◽  
Wanphen Wimonpeerapattana ◽  
Sasiumphai Purttiponthanee ◽  
Uruwan Yamborisut ◽  
...  
Keyword(s):  
Vitamin D ◽  
Vitamin A ◽  
Nutritional Status ◽  
Rural Areas ◽  
Urban Areas ◽  
Vitamin A Deficiency ◽  
Public Health Problem ◽  
Rural Children ◽  
Major Public Health Problem ◽  
Serum Retinol

In the present study, we investigated nutritional status and health-related factors in a multistage cluster sample of 3119 Thai urban and rural children aged 0·5–12·9 years. In a subsample, blood samples were collected for the measurement of Hb, transferrin receptor, vitamin A and vitamin D concentrations. The prevalence of stunting and underweight was higher in rural children than in urban children, whereas the wasting rate was similar in both rural and urban areas. Among children aged 3·0–5·9 years, the prevalence of overweight was significantly higher in urban areas than in rural areas and so was the obesity rate in children aged 6·0–12·9 years. Protein intakes of all age groups were relatively high in both the areas. Intakes of Ca, Fe, Zn and vitamin C were significantly higher in urban areas than in rural areas. The prevalence of anaemia in rural areas was twice as high as that in urban areas, particularly in infants and young children. However, the prevalence of Fe-deficiency anaemia was similar in both urban and rural areas. While the prevalence of vitamin A deficiency (by serum retinol cut-off < 0·7 μmol/l) seemed to be very low, vitamin A insufficiency (by serum retinol cut-off < 1·05 μmol/l) was more prevalent (29·4–31·7 %) in both the areas. The prevalence of vitamin D insufficiency ranged between 27·7 and 45·6 % among the children. The present study indicates that the double burden of malnutrition is still a major public health problem in Thailand. Further studies need to explore the associated risk factors for these nutrient deficiencies. Effective strategies and actions are needed to tackle the nutritional problems in Thai children.

scholarly journals Maternal Vitamin A Deficiency during Pregnancy and Its Relation with Maternal and Neonatal Hemoglobin Concentrations among Poor Egyptian Families

2013 ◽  
Vol 2013 ◽  
pp. 1-6 ◽  
Author(s):  
A. M. Hamdy ◽  
M. M. Abdel Aleem ◽  
A. A. El-Shazly
Keyword(s):  
Vitamin A ◽  
Vitamin A Deficiency ◽  
Public Health Problem ◽  
Cross Sectional Study ◽  
Maternal Serum ◽  
Major Public Health Problem ◽  
Serum Retinol ◽  
Cross Sectional ◽  
Vitamin A Supplementation ◽  
Term Newborns

Background. Vitamin A deficiency (VAD) during pregnancy represents a major public health problem in developing countries. Anemia is a common consequence of VAD. We aimed to measure serum retinol concentrations of a sample of poor Egyptian mothers and correlate it with their Hb% and cord Hb%. Methods. This cross-sectional study included 200 healthy mothers and their healthy full term newborns. Maternal and cord blood samples were collected for CBC and measurement of serum retinol concentrations. Results. Forty-seven mothers (23.5%) had VAD and 50% were anemic. Mothers with VAD had a significantly lower mean Hb% and a significantly higher frequency of anemia (95.7%) compared to mothers without VAD (35.9%). The relative risk for anemia among mothers with VAD was 2.7 (CI = 2.12–3.3). Newborns of mothers with VAD had a significantly lower mean cord Hb% compared to newborns of mothers without VAD. Maternal serum retinol concentrations were positively correlated with maternal Hb% and cord Hb%. Conclusion. Maternal VAD during pregnancy among poor mothers is associated with maternal anemia and lower Hb% of newborns at birth. Vitamin A supplementation is highly recommended for this vulnerable group.

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.

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.

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