Large-scale Food Fortification Research Articles

Assessment of the policy enabling environment for large-scale food fortification: A novel framework with an application to Kenya.

Large-scale food fortification (LSFF) programs have potential to improve a population's nutritional status. Though their success depends heavily on the prevailing policy environment, few tools exist to understand this environment. To address this gap, we develop a novel framework to define and assess the policy enabling environment for LSFF. This easy-to-apply framework can be used in any setting to track progress and identify next steps for continued improvements. The policy enabling environment is conceptualized as having three domains-policy agenda setting, policy implementation, and policy monitoring and evaluation-each of which is captured through indicators that can be evaluated using existing documentation, key informant interviews, and/or a survey of stakeholder perceptions. To validate the framework and demonstrate how it can be operationalized, we apply it in Kenya, where a mandatory LSFF program for salt has been in place since 1978, and a program for packaged maize and wheat flours and vegetable oils was introduced in 2012. Per our assessment, Kenya has achieved the greatest success within the domain of policy agenda setting, has realized moderate success in policy implementation, and has a weaker record in policy monitoring and evaluation. The positive trajectory for many indicators points to a promising future for Kenya's LSFF program. This assessment yields policy implications for Kenya to improve its policy environment for LSFF, especially around financial sustainability of the program; ways to improve the processes for surveillance and enforcement; efforts to support fortification among medium-and small-scale millers; and a need to improve the data landscape.

Emerging Opportunities for Restructuring Livestock Products and Supply Chains in Post-COVID-19 in India: A Review

The outbreak of COVID-19 has vividly tested the resilience of the livestock sector in India. During this process, a volume of current and potential opportunities has also arisen to redesign livestock products and supply chains. The study reviewed systematic observations to enhance productivity, product quality, and traceability in the livestock sector of India. The study explored the nature of recent digitization and remote monitoring through sensors, food development, and supply chain remodelling to assess post-pandemic acceleration toward modern production and marketing channels. An extensive review of the studies revealed that the emergence of organized micro-delivery channels had created a vast market scope to modernize distribution supply chains, where real-time production chains provided seamless transmission of information among all the stakeholders. The study revealed that the Government should encourage agri-tech startups, which can play a crucial role in propagating organized and hybrid supply chains. Further, livestock value-added product development through large-scale food fortification (LSFF) can help to reduce nutritional deficiency. Therefore, the study concluded that redesigning supply chains and value-added product development in the livestock sector are crucial to inclusive and sustainable agricultural development.

Acceptability of Multiple Micronutrient-Fortified Bouillon Cubes among Women and Their Households in 2 Districts in The Northern Region of Ghana

BackgroundBouillon is a promising large-scale food fortification vehicle, but there is uncertainty regarding the types and concentrations of micronutrients that are feasible to add without compromising consumer acceptability. ObjectiveThe objective of this study was to evaluate the acceptability of 2 different multiple micronutrient-fortified bouillon cube formulations, compared with a bouillon cube fortified with iodine only. MethodsWe conducted a double-blind, randomized, controlled acceptability study in 2 districts in northern Ghana. Two nonproprietary, noncommercialized formulations of multiple micronutrient-fortified bouillon cubes containing iron, zinc, folic acid, vitamins A and B12, and iodine at “upper-level” (45-125% CODEX NRV/2.5g) or “lower-level” (15-50% CODEX NRV/2.5g) concentrations, and a control cube that contained iodine only (50% CODEX NRV/2.5g) were evaluated. Eligible women (n = 84) were invited to participate in 1) center-based sensory evaluations designed to permit within-individual comparisons among the different study products; and 2) in-home evaluation of bouillon acceptability and use, in which participants were randomized to receive 1 of the 3 study products to use in household cooking for a 2-wk period. Acceptance test ratings were based on a 5-point Likert scale (1 = dislike very much, 5 = like very much). ResultsIn the center-based evaluations, overall liking of the 3 bouillon cube formulations both dry and in prepared dishes ranged from 4.3 to 4.6 on the 5-point Likert scale and did not differ among formulations (P > 0.05). After the 2-wk in-home trial, 93.8% of index participants (n = 75/80) rated their overall liking of the bouillon product formulation to which they were randomly assigned as “like” or “like very much” (4–5 on the 5-point Likert scale) and median apparent intake of study-provided bouillon over 2 wk was 3.6 g/capita/d; neither value differed by study group (P = 0.91 for both). ConclusionsAll 3 formulations of bouillon cubes assessed were acceptable to women and their households in 2 districts in northern Ghana.This trial was registered at www.clinicaltrials.gov as NCT05177614.

Global Coverage of Mandatory Large-Scale Food Fortification Programs: A Systematic Review and Meta-Analysis.

Food fortification with micronutrients is widely implemented to reduce micronutrient deficiencies and related outcomes. Although many factors affect the success of fortification programs, high population coverage is needed to have a public health impact. We aimed to provide recent global coverage estimates of salt, wheat flour, vegetable oil, maize flour, rice, and sugar among countries with mandatory fortification legislation. The indicators were the proportion of households consuming the: food, fortifiable food (that is, industrially processed), fortified food (to any extent), and adequately fortified food (according to national or international standards). We estimated the number of individuals reached with fortified foods. We systematically retrieved and reviewed all applicable evidence from: published reports and articles from January 2010 to August 2021, survey lists/databases from key organizations, and reports/literature received from key informants. We analyzed data with R statistical package using random-effects meta-analysis models. An estimated 94.4% of households consumed salt, 78.4% consumed fortified salt (4.2 billion people), and 48.6% consumed adequately fortified salt in 64, 84, and 31 countries, respectively. Additionally, 77.4% of households consumed wheat flour, 61.6% consumed fortifiable wheat flour, and 47.1% consumed fortified wheat flour (66.2 million people) in 15, 8, and 10 countries, respectively, and 87.0% consumed vegetable oil, 86.7% consumed fortifiable oil, and 40.1% consumed fortified oil (123.9 million people) in 10, 7, and 5 countries, respectively. Data on adequately fortified wheat flour and vegetable oil and coverage indicators for maize flour, rice, and sugar were limited. There are major data gaps on fortification coverage for most foods except salt. All countries with mandatory fortification programs should generate and use more coverage data to assess program performance and adjust programs as needed to realize their potential to reduce micronutrient deficiencies (PROSPERO CRD42021269364).

A generic theory of change-based framework with core indicators for monitoring the effectiveness of large-scale food fortification programs in low- and middle-income countries.

Large-scale food fortification (LSFF) programs are widely implemented in low- and middle-income countries (LMIC) to alleviate micronutrient deficiencies. However, these programs may not achieve the desired impact due to poor design or bottlenecks in program implementation. Monitoring and evaluation (M&E) frameworks and a set of agreed indicators can help to benchmark progress and to strengthen the evidence-base of effectiveness in a standardized way. We aimed to formulate recommendations towards core indicators for evaluating the effectiveness of LSFF programs with their associated metrics, methods, and tools (IMMT). For this, we used a multi-method iterative approach, including a mapping review of the literature, semi-structured interviews with international experts, compilation of a generic Theory of Change (ToC) framework for LSFF program delivery, and selection of IMMT for M&E of LSFF programs at key stages along the ToC delivery framework. Lastly, we conducted exploratory, qualitative interviews with key informants in Nigeria to explore experiences and perceptions related to the implementation of LSFF programs in Nigeria's context, and their opinion towards the proposed set of core IMMT. The literature search resulted in 14 published and 15 grey literature documents, from which we extracted a total of 41 indicators. Based on the available literature and interviews with international experts, we mapped a ToC delivery framework and selected nine core indicators at the output, outcome and impact level for M&E of the effectiveness of LSFF programs. Key informants in Nigeria revealed that the main bottlenecks for implementation of the proposed IMMT are related to the lack of technical capacity, equipment, laboratory infrastructure, and financial resources. In conclusion, we propose a set of nine core indicators for enabling comprehensive M&E of the effectiveness of LSFF programs in LMIC. This proposed set of core indicators can be used for further evaluation, harmonization and integration in national and international protocols for M&E of LSFF programs.

Household-Level Coverage of Iron-Biofortified Beans in the Northern Province of Rwanda

BackgroundBiofortification, the process of enhancing the micronutrient content of staple crops, is a nutrition-sensitive agricultural intervention with the potential to increase micronutrient intakes and improve health outcomes, especially among vulnerable populations. Although data are available on the number of farming households that grow biofortified crops, information on the coverage of biofortified foods in the general population is limited. Such information is critical to assess the performance of biofortification programs and guide decisions related to program implementation while ascertaining progress toward achieving expected impacts. ObjectiveThis study aimed to assess the household coverage of iron-biofortified beans (IBBs) in rural areas of the Northern Province of Rwanda. MethodsWe applied methods previously used to assess coverage in large-scale food fortification programs to develop coverage indicators for IBBs. These indicators were 1) consumption of beans in any form; 2) awareness of IBBs; 3) availability of IBBs; 4) consumption of IBBs (ever); and 5) consumption of IBBs (current). ResultsOf the 535 households surveyed, 98% consumed beans in any form and 79% were aware of IBBs. Among the 321 households that provided bean samples, only 40% of the samples were biofortified (as determined by a breeding specialist) and only 21% of respondents were able to correctly identify IBBs. Although 52% of households reported to be ever consuming biofortified beans, only 10% of households were currently consuming these beans. ConclusionsDespite relatively high awareness of IBBs among surveyed households, a few households currently consume IBBs, highlighting the need to explore strategies to promote consumption. More research is also required to investigate factors hindering the consumption of IBBs.

Global strategies for the prevention of neural tube defects through the improvement of folate status in women of reproductive age.

Neural tube defects represent a global public health problem, mainly in countries where effective prevention strategies are not yet in place. The global prevalence of neural tube defects is estimated at 18.6/10,000 (uncertainty interval: 15.3-23.0) live births, where ~ 75% of cases result in under-five mortality. Most of the mortality burden is in low- and middle-income countries. The main risk factor for this condition is insufficient folate levels in women of reproductive age. This paper reviews the extent of the problem, including the most recent global information on folate status in women of reproductive age and the most recent estimates of the prevalence of neural tube defects. Additionally, we provide an overview of the available interventions worldwide to reduce the risk of neural tube defects by improving folate status in the population, including dietary diversification, supplementation, education, and fortification. Large-scale food fortification with folic acid is the most successful and effective intervention to reduce the prevalence of neural tube defects and associated infant mortality. This strategy requires the coordination of several sectors, including governments, the food industry, health services providers, the education sector, and entities that monitor the quality of the service processes. It also requires technical knowledge and political will. An international collaboration between governmental and non-governmental organizations is essential to succeed in saving thousands of children from a disabling but preventable condition. We propose a logical model for building a national-level strategic plan for mandatory LSFF with folic acid and explain the actions needed for promoting sustainable system-level change.

Aligning the Epidemiology of Malnutrition with Food Fortification: Grasp Versus Reach

Large-scale food fortification (LSFF) has been recognized as one of the most cost-effective interventions to improve the intake of vitamins and minerals and decrease the burden of micronutrient deficiency. Indeed, the simple addition of micronutrients to staple foods, such as wheat, maize and rice, or condiments, including salt and bouillon, has tremendous potential to impact malnutrition. However, most LSFF programs have been poorly designed and have not taken into consideration critical inputs, including current levels of nutrient inadequacy and per capita consumption of different food vehicles when deciding which nutrients to add and at what concentrations. LSFF programs, like some other nutrition interventions, also tend to have low coverage and reach and lack monitoring to measure this and course correct. These program design flaws have resulted in limited effectiveness and have made it difficult to determine how best to harmonize LSFF with other interventions to reduce micronutrient deficiencies, including efforts to enhance dietary diversity, biofortification and supplementation. Furthermore, LSFF has often been touted as a population-based intervention, but in fact has heterogenous effects among sub-groups, particularly those with limited access to or inability to afford fortified foods, as well as those with higher physiological requirements, such as pregnant and lactating women. This article focuses on these limitations and the concerted efforts underway to improve the collection, analysis, and use of data to better plan LSFF programs, track implementation, and monitor coverage and impact. This includes a more sophisticated secondary analysis of existing data, innovations to increase the frequency of primary data collection and programmatically relevant visualizations of data of sub-national estimates. These improvements will enable better use of data to target resources and programmatic efforts to reach those who stand to benefit most from fortification.

Estimating the cost and cost-effectiveness of adding zinc to, and improving the performance of, Burkina Faso's mandatory wheat flour fortification programme.

Zinc is an essential micronutrient that promotes normal growth, development and immune function. In the context of persistent dietary zinc inadequacies, large-scale food fortification can help fill the gap between intake and requirements. Burkina Faso mandates wheat flour fortification with iron and folic acid. We used activity-based cost modelling to estimate the cost of adding zinc to the country's wheat flour fortification standard assuming (1) no change in compliance with the national standard, and (2) a substantial improvement in compliance. We used household food consumption data to model effective coverage, that is, the number of women of reproductive age (WRA) predicted to achieve adequate zinc density (zinc intake/1000 kcal) with the addition of fortification to diets. Without interventions, the prevalence of inadequate dietary zinc density was ~35.5%. With no change in compliance, the annual average incremental cost of adding zinc to fortified wheat flour was $10,347, which would effectively cover <1% of WRA at an incremental cost of ~$0.54/WRA effectively covered. Improving compliance added ~$300,000/year to the cost of the fortification programme without zinc; including zinc added another ~$78,000/year but only reduced inadequate intake among WRA by 3.6% at an incremental cost of ~$0.45/WRA effectively covered. Although the incremental cost of adding zinc to wheat flour is low ($0.01/wheat flour consumer/year), given low levels of wheat flour consumption, zinc fortification of wheat flour alone contributes marginally to, but will not fully close, the dietary zinc gap. Future research should explore potential contributions of zinc to a broader set of delivery vehicles.

Coverage of Large-Scale Food Fortification of Edible Oil, Wheat Flour, and Maize Flour Varies Greatly by Vehicle and Country but Is Consistently Lower among the Most Vulnerable: Results from Coverage Surveys in 8 Countries

Coverage of Large-Scale Food Fortification of Edible Oil, Wheat Flour, and Maize Flour Varies Greatly by Vehicle and Country but Is Consistently Lower among the Most Vulnerable: Results from Coverage Surveys in 8 Countries

Comparison of the costs and data outputs of conventional cluster sampling and lot quality assurance sampling (LQAS) for assessing the coverage of fortified foods in household surveys

Household surveys are essential for assessing the coverage of public health programmes, including large-scale food fortification (LSFF) programmes in developing countries. For decades, survey implementers have predominantly designed and implemented household-based surveys using conventional cluster sampling, but other sampling approaches, such as lot quality assurance sampling (LQAS), should be considered as an alternative. This study compares the costs and data outputs of conventional cluster sampling and LQAS when used to measure the household-level coverage of a hypothetical LSFF programme. Specifically, four survey scenarios were compared using hypothetical results: conventional cluster sampling to calculate the coverage of fortified foods at the national (scenario A) and regional (scenario B) levels, and LQAS to produce pass/fail results at the national (scenario C) and regional (scenario D) levels. For each scenario, sample sizes were calculated using a target coverage of 25%, 50%, and 75%, and used previous surveys to estimate survey budget costs, which consisted of the costs of administration, field workers, other personnel, materials, and laboratory testing. A national level LQAS survey (scenario C) had the lowest estimated costs (69,424 – 73,462 USD), followed by a national level conventional cluster sampling survey (scenario A) (82,620 – 90, 164 USD). There were higher overall costs and larger cost differences between sampling approaches for surveys designed to yield regional estimates. Here, costs for a conventional cluster sampling survey (scenario B; 212,210 – 251, 470 USD) are more than double those for a LQAS survey (scenario D) (113,060 – 129,540 USD). Sample size is the main driver of survey costs in all scenarios, while costs for field teams (salaries and transportation) and laboratory analyses of food samples vary depending on the scenario and coverage threshold; all other survey costs (e.g., ethical approaval, training &amp; field testing) remain relatively stable across different scenarios and thresholds. While LQAS surveys can be implemented at a lower cost due to smaller sample size requirements, the cost savings are less than expected due to the more dispersed distribution of households. Furthermore, because LQAS are initially designed to yield only pass/fail classification rather than estimates of actual coverage, they may not provide the actionable insights required in routine programme monitoring. When selecting a survey sampling approach, food fortification programme planners must consider what type of results best suit their decision-making needs and available resources. Key words: Coverage, Food Fortification, Sampling, Lot-Quality Assurance Sampling, Cluster-sampling

Building the Commitment of the Private Sector and Leveraging Effective Partnerships to Sustain Food Fortification.

The private sector is a critical partner in achieving the universally adopted Sustainable Development Goals (SDGs)-UNDP 2022. As part of a national strategy to address malnutrition (SDG2), Large-Scale Food Fortification of commonly consumed staple foods and condiments with vitamins and minerals is a proven intervention that requires the concerted engagement of multiple actors in a country's agri-food and public health ecosystems. Lessons from TechnoServe's Strengthening African Processors of Fortified Foods (SAPFF) Program, implemented from 2016 to 2022 in Kenya, Nigeria, and Tanzania with support from the Bill and Melinda Gates Foundation, provide essential learnings about how to effectively engage, motivate, and improve the food fortification performance of the industry in compliance with national standards, through capacity building, responsive technical assistance, and multistakeholder engagement that builds trust and accountability of industry in the fight against malnutrition.

Estimating the Costs of Alternative Large-Scale Food Fortification Programs in Burkina Faso: A MINIMOD Tool for Informing Policy Discussions

ObjectivesDecisions regarding the types and amounts of micronutrients to include in large-scale food fortification (LSFF) programs should consider costs. The Micronutrient Intervention Modeling (MINIMOD) cost tool estimates the costs of alternative LSFF programs, with focus on stakeholders’ cost burdens.MethodsAn activity-based cost model was developed and adapted to the context of Burkina Faso. Key national characteristics (e.g., population size), and information on existing and hypothetical LSFF programs (e.g., adherence to standards) establish the model's platform. Private- and public-sector costs (as relevant) of designing, implementing, and managing LSFF are included. The model contains a micronutrient premix cost calculator. LSFF-vehicle-specific consumption patterns (e.g., g/day of fortifiable wheat flour consumed, based on household survey data) link costs to program reach. A ten-year planning time horizon is adopted.ResultsThe premix required to fortify wheat flour with iron and folic acid (60 mg/kg of ferrous fumarate, 2.5 mg/kg of folic acid – the current standard) is estimated to cost ∼$2.11 (2020 USD) per MT of fortified flour, with overall 10-year program costs of ∼$2.4m; ∼25% faced by industry (e.g., internal quality control), ∼23% by government (e.g., external monitoring), and 52% by stakeholders who would cover premix costs (generally assumed to be industry, with some pass-through to consumers). Cost per person and cost per person reached are ∼$0.010 and ∼$0.023, respectively. Including zinc in this premix (95 mg/kg of zinc oxide) would increase the cost per MT of fortified flour to ∼$3.02, total 10-year program costs to ∼$3.3m, and cost per person and per person reached to ∼$0.014 and ∼$0.032, respectively. The premix's share of costs increased to ∼54%.ConclusionsThe levels and compositions of the costs should be considered when designing and managing LSFF, in part because different stakeholder groups, including consumers, will be called upon to pay them. Premix costs are one main cost driver; increasing the number and/or amounts of fortificants will increase overall program costs and shift the burden of costs among stakeholders.Funding SourcesResearch was supported by a grant to UC Davis from Helen Keller International through their support from the Bill & Melinda Gates Foundation.

Fortification of salt with iron and iodine versus fortification of salt with iodine alone for improving iron and iodine status.

Fortification of salt with iron and iodine versus fortification of salt with iodine alone for improving iron and iodine status.

Cost-effectiveness of Vitamin A supplementation among children in three sub-Saharan African countries: An individual-based simulation model using estimates from Global Burden of Disease 2019.

Vitamin A Supplementation (VAS) is a cost-effective intervention to decrease mortality associated with measles and diarrheal diseases among children aged 6-59 months in low-income countries. Recently, experts have suggested that other interventions like large-scale food fortification and increasing the coverage of measles vaccination might provide greater impact than VAS. In this study, we conducted a cost-effectiveness analysis of a VAS scale-up in three sub-Saharan African countries. We developed an individual-based microsimulation using the Vivarium simulation framework to estimate the cost and effect of scaling up VAS from 2019 to 2023 in Nigeria, Kenya, and Burkina Faso, three countries with different levels of baseline coverage. We calibrated the model with disease and risk factor estimates from the Global Burden of Disease 2019 (GBD 2019). We obtained baseline coverage, intervention effects, and costs from a systematic review. After the model was validated against GBD inputs, we modeled an alternative scenario where we scaled-up VAS coverage from 2019 to a level that halved the exposure to lack of VAS in 2023. Based on the simulation outputs for DALYs averted and intervention cost, we determined estimates for the incremental cost-effectiveness ratio (ICER) in USD/DALY. Our estimates for ICER are as follows: $860/DALY [95% UI; 320, 3530] in Nigeria, $550/DALY [240, 2230] in Kenya, and $220/DALY [80, 2470] in Burkina Faso. Examining the data for DALYs averted for the three countries over the time span, we found that the scale-up led to 21 [5, 56] DALYs averted per 100,000 person-years in Nigeria, 21 [5, 47] DALYs averted per 100,000 person-years in Kenya, and 14 [0, 37] DALYs averted per 100,000 person-years in Burkina Faso. VAS may no longer be as cost-effective in low-income regions as it has been previously. Updated estimates in GBD 2019 for the effect of Vitamin A Deficiency on causes of death are an additional driver of this lower estimate of cost-effectiveness.

Perspective: Putting the youngest among us into the nutrition “call for action” for food fortification strategies

ABSTRACTAdequate iron intake is essential for optimal child development, but iron deficiency and anemia among infants and young children are widespread in low- and middle-income countries. Large-scale food fortification strategies hold great promise for reducing micronutrient deficiencies; however, for children <2 y of age, the impact of such strategies is limited because their intake of staple foods is relatively low and fortification levels are targeted at the adult population. Iron supplementation, iron fortification of foods targeted to infants, and point-of-use fortification with iron-containing products such as multiple micronutrient powders (MNPs) and small-quantity lipid-based nutrient supplements are evidence-based approaches recommended to reduce anemia among infants and young children when used in the right context. Since 2003, the WHO, with support from UNICEF, has recommended the use of MNPs to control iron deficiency. However, the percentage of children with anemia has changed very little over the past 10 y. Five years ago the UN declared a decade of action on nutrition, including World Health Assembly (WHA) targets for maternal, infant, and young child nutrition, yet the WHA set no anemia targets for children. In July 2020 the leaders of 4 UN agencies issued a call for action to protect children's right to nutrition in the face of the COVID-19 pandemic and beyond. Given persistently high rates of anemia among young children, the negative developmental impact, the challenge of meeting iron needs from typical complementary food diets, and the availability of successful evidence-based fortification strategies for this age group, we encourage planners, speakers, and donors at this year's UN Food Systems Summit and the Tokyo Nutrition for Growth Summit to 1) call for the WHA to set anemia targets for infants and young children and 2) promote investment in evidence-based interventions to improve the iron status of young children.

Modeling food fortification contributions to micronutrient requirements in Malawi using Household Consumption and Expenditure Surveys.

Large‐scale food fortification may be a cost‐effective intervention to increase micronutrient supplies in the food system when implemented under appropriate conditions, yet it is unclear if current strategies can equitably benefit populations with the greatest micronutrient needs. This study developed a mathematical modeling framework for comparing fortification scenarios across different contexts. It was applied to model the potential contributions of three fortification vehicles (oil, sugar, and wheat flour) toward meeting dietary micronutrient requirements in Malawi through secondary data analyses of a Household Consumption and Expenditure Survey. We estimated fortification vehicle coverage, micronutrient density of the diet, and apparent intake of nonpregnant, nonlactating women for nine different micronutrients, under three food fortification scenarios and stratified by subpopulations across seasons. Oil and sugar had high coverage and apparent consumption that, when combined, were predicted to improve the vitamin A adequacy of the diet. Wheat flour contributed little to estimated dietary micronutrient supplies due to low apparent consumption. Potential contributions of all fortification vehicles were low in rural populations of the lowest socioeconomic position. While the model predicted large‐scale food fortification would contribute to reducing vitamin A inadequacies, other interventions are necessary to meet other micronutrient requirements, especially for the rural poor.

Rapid direct analysis of retinyl palmitate (vitamin A) in fortified vegetable oils by HPLC-FLD

ABSTRACT Large-scale food fortification of vegetable oils with vitamin A has been implemented successfully for decades in numerous African and Asian countries, contributing demonstrably to reductions in vitamin A deficiency. For these programmes, reliable and validated analytical data are essential to demonstrate compliance with legal standards and fortification levels. Commonly, many analytical laboratories use a saponification method for the quantitative analysis of retinyl palmitate (the mostly used form of vitamin A for fortification) in fortified oils, which implies a multiple-step procedure with long analysis times and the potential risk of analyte loss. The aim of the present study was to develop and validate a direct High-performance Liquid Chromatography (HPLC) method that reduces these sample preparation steps, leading to the cost- and time-efficient quantification of retinyl palmitate in fortified oils. Oil samples are dissolved into the HPLC solvents, then injected directly into a common C18 column, and subsequently detected by a fluorescence detector. The limit of quantification (1.0 mg retinyl palmitate kg−1) and the working range of 1.0–100 mg retinyl palmitate kg−1 with a linearity of R2 = 0.9989 are appropriate to analyse fortified oil samples. The method also showed adequate precision (RSD between 1.1% and 3.1%) and recoveries (86–103%) at two different concentration levels. The accuracy of the direct HPLC method was additionally proven by the comparison of spiked samples with two external laboratories that used the saponification method. The robustness of the method was confirmed by the analysis of various spiked edible oils. The HPLC column is not deteriorated by the lipid matrix and shows excellent stability and long lifetime. Also, 9-cis-retinyl palmitate formed mainly by light exposure could be detected by this method. The direct HPLC method is a well-suited alternative to the saponification method for the rapid and reliable routine analysis of fortified oil samples.

Achieving dietary micronutrient adequacy in a finite world

Achieving dietary micronutrient adequacy in a finite world

Understanding drivers of private-sector compliance to large-scale food fortification: A case study on edible oil value chains in Bangladesh

Micronutrient deficiency is a pertinent global challenge that affects billions of people and has deleterious health effects. Large-scale food fortification (LSFF) is a cost- effective way to tackle micronutrient deficiency and improve health outcomes, particularly in low- and middle-income countries (LMICs). However, the success of LSFF in LMICs is often hampered by limited compliance with fortification mandates by the private sector, who supply fortified foods. In this paper, we use a case study of the edible oil produced in Bangladesh to analyze the factors facilitating and impeding this compliance by for-profit actors. We identified four bottlenecks that disincentivize private sector actors’ decision to comply. First, fortified and non-fortified products co-exist in the market, disincentivizing producers to invest in fortification. Second, the lack of traceability reduces the risk for large-scale producers’ non-compliance with the regulation. Third, small-scale producers face economic pressures that prevent them from adequately fortifying oil products. Lastly, law enforcement is currently inconsistent, allowing the supply of under-fortified oil in the market. Given the evidence, we recommend to strengthen the control of bulk item fortification through more frequent and rigorous surveillance at the production level. This will ensure that resource constrained consumers who also have the greatest potential to benefit from added nutrients, remain able to access affordable and nutrient-enriched food.