Smart food fortification: How IoT, AI and automation can transform Bangladesh’s food industry

Bangladesh has made significant progress in food fortification over the past decade. From fortified edible oil and iodised salt to fortified wheat flour and rice, much of the policy framework is already in place.

Yet a persistent gap remains between standards and implementation. The challenge is no longer whether to fortify food, but how consistently fortification is maintained. This is where "smart fortification" — powered by artificial intelligence (AI), machine learning (ML), the Internet of Things (IoT) and automation — could transform Bangladesh's food fortification industry.

The hidden problem: inconsistency at scale

Fortification is fundamentally a precision-driven process. Small quantities of micronutrient premix must be distributed evenly across large volumes of flour or rice. Even minor dosing errors can reduce nutritional effectiveness, waste costly inputs and expose producers to compliance risks.

Across many mills, particularly small and medium-sized ones, fortification still depends on semi-manual or poorly calibrated dosing systems. Variations in flow rates, equipment wear, power fluctuations and human error often lead to under- or over-fortification.

The consequences are serious. Under-fortified products fail to provide intended nutritional benefits, while over-fortification increases production costs and risks non-compliance with regulations.

As a result, a credibility gap emerges. Even when producers intend to comply with standards, maintaining consistent micronutrient levels batch after batch remains a technical challenge.

Testing systems also remain a major weak point, both in Bangladesh and globally. Most facilities rely on periodic laboratory-based testing that is slow, expensive and disconnected from real-time production.

This means deviations are often identified only after products have already entered the market. Even where regulatory mechanisms prevent distribution, large quantities of non-compliant products may already have been produced — an economically difficult burden for many SMEs.

Limited laboratory access and inconsistent sampling further weaken reliability, leaving compliance largely assumed rather than continuously verified.

From manual blending to smart systems

Recent initiatives under Millers for Nutrition, powered by TechnoServe, highlight both the challenges and possibilities of automation in rice fortification.

In many fortified rice kernel (FRK) blending units, operators traditionally rely on fixed-speed gravimetric feeders or manual adjustments to mix FRK with regular rice. However, variations in rice and FRK flow rates frequently result in inconsistent blending ratios.

To address this, Millers for Nutrition, in partnership with Bangladesh Agricultural University, has introduced automated blending systems integrating flow sensors with variable-speed dosing mechanisms.

These systems continuously measure rice flow and automatically adjust FRK feeder speeds to maintain target blending ratios in real time. IoT-enabled data logging is also being incorporated to monitor production volume, blending consistency and machine performance.

Trial results have been promising. Mills that previously struggled with inconsistent blending can now maintain tighter control over FRK ratios, reduce reliance on operator judgement and generate digital records supporting quality assurance and audit processes.

The importance of consistency is especially significant because fortified rice in Bangladesh is largely distributed through social safety net programmes. Ensuring reliable quality at scale is therefore not only a technical issue, but also one of public trust and nutritional impact.

IoT-enabled systems could also support a centralised digital monitoring framework, allowing governments to access real-time production and blending data. Such systems could reduce dependence on manual inspections, minimise opportunities for data manipulation and lower monitoring costs.

Importantly, the transition is relatively affordable. Retrofitting costs are estimated at Tk50,000–100,000, making adoption feasible even for many small and medium-sized mills.

The business case for precision fortification

In wheat flour fortification, one of the most overlooked challenges is production variability.

Flour flow from modern milling systems is rarely constant, fluctuating with grain quality, milling rates and machine conditions. Yet many mills still operate premix dosing systems at fixed or manually adjusted rates, creating mismatches between flour output and micronutrient addition.

Sensor-based automation could significantly improve this process.

By continuously measuring flour flow and synchronising it with variable-speed premix feeders, automated systems can ensure precise and proportional dosing throughout production.

The economic benefits are substantial.

Bangladesh Standards (BDS) for fortified wheat flour define minimum fortification thresholds. To avoid non-compliance, many producers intentionally overdose premix as a safety margin.

While understandable, this practice often leads to significant financial losses because premix remains one of the most expensive production inputs.

Smart fortification systems allow millers to operate much closer to target levels while maintaining compliance, reducing unnecessary wastage.

Such systems also improve product consistency, reduce reliance on operator judgement and generate digital records that strengthen quality assurance and audit readiness.

In an increasingly compliance-driven market, precision dosing is becoming not only a technical improvement, but also a business necessity.

From colour to code

Spot iron testing is widely used in fortified flour programmes as a rapid and low-cost way to verify iron presence. However, it remains largely qualitative, relying on human interpretation of colour intensity.

This introduces subjectivity. Results can vary depending on lighting conditions, operator experience and visual judgement.

Advances in image processing and machine learning now offer a practical way to transform these tests into quantitative, smartphone-based analytical tools.

Using mobile cameras under standardised conditions, applications can analyse colour intensity, adjust for environmental variation and compare results against laboratory-validated datasets.

Machine learning models can then improve accuracy over time across different flour types and premix variations, enabling near real-time field-level estimation of iron content.

Researchers have also extended this approach to Fortified Rice Kernel (FRK) testing, with encouraging early results.

With stronger datasets and improved regression models, similar systems could eventually estimate multiple micronutrients simultaneously, transforming basic field testing into a scalable digital monitoring system.

Building the next generation of fortification systems

As Bangladesh advances its fortification agenda, the challenge is no longer simply expanding coverage. It is ensuring consistency, accuracy and trust throughout the supply chain.

Traditional dependence on manual controls and periodic verification increasingly falls short of the precision modern fortification requires.

The integration of IoT, automation and AI-driven tools offers a practical path forward by enabling real-time dosing control, continuous production monitoring and faster verification systems.

Millers for Nutrition and TechnoServe are already working with academic institutions and industry partners in Bangladesh to develop and scale these innovations.

More importantly, these technologies are not futuristic concepts. They are scalable and relatively affordable upgrades that can gradually be integrated into existing production systems.

If implemented strategically, they could transform fortification from a compliance-driven obligation into a transparent, efficient and self-verifying system.

Ultimately, the future of food fortification in Bangladesh will depend not only on policy strength, but also on the country's ability to adopt smarter systems that ensure fortified foods consistently deliver their intended nutritional benefits.

Disclaimer: The views and opinions expressed in this article are those of the authors and do not necessarily reflect the opinions and views of The Business Standard.