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The impact of iron-biofortified bean adoption on bean productivity, consumption, purchases and sales.

ABSTRACT: Staple food crops tend to be low in micronutrients; therefore, individuals whose diets rely heavily on them can suffer from micronutrient deficiency. Biofortification addresses this issue through the breeding of staple crops that are micronutrient-dense and high yielding. One such crop is iron-biofortified beans. Ten iron-biofortified bean varieties were released between 2010 and 2012 in Rwanda, a country with high rates of bean production and consumption, to address iron deficiency. This study evaluates the effect of the most widely adopted of these varieties, RWR2245, on household yield, land cultivated under beans, bean consumption, purchases, and sales. Because the adoption decision could be endogenous, we use a control function approach to quantify the impacts of adoption. RWR2245 provides a yield gain of 20%-49% over traditional bush bean varieties. In our preferred model specification, we find that over a 12-month period, growing RWR2245 for at least one out of two annual growing seasons increases the length of time beans are consumed from own production by 0.64 months (19-20 days), reduces the length of time beans are purchased for consumption by 0.73 months (22-23 days), and increases the probability of selling beans by 12%. Adoption can thus improve household nutrition via two channels: primarily by increasing iron intake via substituting biofortified harvested beans for less nutrient-dense beans from the market, and additionally by increasing household income that can be spent on nutritious foods through the reduction in bean purchases and increased likelihood of selling beans. Moreover, the sale of iron-biofortified beans implies the availability of iron-dense food in markets, also benefiting households that purchase beans. These findings are promising for the continued adoption of iron-biofortified beans in Rwanda and elsewhere and provide evidence that biofortified crops are an effective investment for nutrition, food security, and poverty reduction.

SUBMITTER: Vaiknoras K

PROVIDER: S-EPMC7871334 | biostudies-literature | 2021 Mar

REPOSITORIES: biostudies-literature

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The impact of iron-biofortified bean adoption on bean productivity, consumption, purchases and sales.

Vaiknoras Kate K Larochelle Catherine C

World development 20210301

Staple food crops tend to be low in micronutrients; therefore, individuals whose diets rely heavily on them can suffer from micronutrient deficiency. Biofortification addresses this issue through the breeding of staple crops that are micronutrient-dense and high yielding. One such crop is iron-biofortified beans. Ten iron-biofortified bean varieties were released between 2010 and 2012 in Rwanda, a country with high rates of bean production and consumption, to address iron deficiency. This study ...[more]

PMID: 33658742

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Project description:Background: Sweetpotato and potato are fast-maturing staple crops and widely consumed in low- and middle-income countries. Conventional breeding to biofortify these crops with iron could improve iron intakes. To our knowledge, iron absorption from sweetpotato and potato has not been assessed.Objective: The aim was to assess iron absorption from regular and iron-biofortified orange-fleshed sweetpotato in Malawi and yellow-fleshed potato and iron-biofortified purple-fleshed potato in Peru.Methods: We conducted 2 randomized, multiple-meal studies in generally healthy, iron-depleted women of reproductive age. Malawian women (n = 24) received 400 g regular or biofortified sweetpotato test meals and Peruvian women (n = 35) received 500 g regular or biofortified potato test meals. Women consumed the meals at breakfast for 2 wk and were then crossed over to the other variety. We labeled the test meals with 57Fe or 58Fe and measured cumulative erythrocyte incorporation of the labels 14 d after completion of each test-meal sequence to calculate iron absorption. Iron absorption was compared by paired-sample t tests.Results: The regular and biofortified orange-fleshed sweetpotato test meals contained 0.55 and 0.97 mg Fe/100 g. Geometric mean (95% CI) fractional iron absorption (FIA) was 5.82% (3.79%, 8.95%) and 6.02% (4.51%, 8.05%), respectively (P = 0.81), resulting in 1.9-fold higher total iron absorption (TIA) from biofortified sweetpotato (P < 0.001). The regular and biofortified potato test meals contained 0.33 and 0.69 mg Fe/100 g. FIA was 28.4% (23.5%, 34.2%) from the regular yellow-fleshed and 13.3% (10.6%, 16.6%) from the biofortified purple-fleshed potato meals, respectively (P < 0.001), resulting in no significant difference in TIA (P = 0.88).Conclusions: FIA from regular yellow-fleshed potato was remarkably high, at 28%. Iron absorbed from both potato test meals covered 33% of the daily absorbed iron requirement for women of reproductive age, while the biofortified orange-fleshed sweetpotato test meal covered 18% of this requirement. High polyphenol concentrations were likely the major inhibitors of iron absorption. These trials were registered at www.clinicaltrials.gov as NCT03840031 (Malawi) and NCT04216030 (Peru).

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Project description:BackgroundThe closing of bars, restaurants and international borders during the COVID-19 pandemic led to significant changes in alcohol availability. This study provides a first systematic overview of the monthly development of alcohol sales in Europe during the pandemic in order to determine the effect of closed borders on the sales and consumption of alcohol.MethodsThe study covers 72 months from January 2015 to December 2020 in 14 countries from northern, central and western Europe with excise revenue data for beer, spirits, wine separately and summed, converted into litres of pure alcohol per capita 15+ as a proxy for alcohol sales. March-December 2020 is seen as the pandemic period. The analyses consist of (1) descriptive trends of sales before and during the pandemic, (2) assessment of the pandemic impact on sales by time-series analyses and (3) case studies of countries and a region with substantial cross-border inflow or outflow of alcohol.ResultsThe result shows an overall reduction in alcohol sales with 3.6% during the pandemic. Nevertheless, the results differ based on the level of cross-border purchasing flows pre-pandemic, as countries with high cross-border inflow saw an increase in domestic sales as the pandemic hit. Norway, for example, saw a 23% increase in domestic sales during the pandemic period March-December 2020 compared to the same period in 2019.ConclusionThe closing of intra-European borders had a significant redistributing effect on alcohol sales. While noting sales increases, cross-border inflow countries generally saw a decrease in total amount of alcohol consumed per capita as not all cross-border purchases were replaced by domestic sales. This has important policy implications as large volumes of cross-border inflow of alcohol can negatively affect excise revenue as well as public health outcomes. The methodology can be used to further explore the reliance of different purchasing streams in a domestic alcohol market.

Dataset Information

The impact of iron-biofortified bean adoption on bean productivity, consumption, purchases and sales.

Publications

The impact of iron-biofortified bean adoption on bean productivity, consumption, purchases and sales.

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