Part of the food fraud pillar of the TAAG Learning Center. To understand the difference from a food safety problem, see what food safety is.
Table of contents
Why the cases are worth studying
A good part of what today's standards demand on food fraud was born from specific scandals. Each exposed a different blind spot: an analysis that could be fooled, a chain too long to control, a method adulterators learned to evade, an "economic" adulteration that ended in poisonings. Reviewing what happened helps ask better questions in your own vulnerability assessment.
One guiding principle of this article: we focus on the mechanism of the fraud and its lessons, not on the companies involved.
2008: melamine in milk and infant formula
What happened
In 2008, in China, melamine was deliberately added to raw milk and other products. The reason was technical: the usual methods for estimating protein actually measure nitrogen, and melamine is very rich in nitrogen. A diluted product thus appeared to meet the required protein content. According to data from China's Ministry of Health reported to the WHO, 294,000 children were affected by consuming contaminated formula and dairy products, with six deaths, mainly from stones and damage to the urinary tract.
What changed
In 2010, the Codex Alimentarius Commission set maximum levels for melamine of 1 mg/kg in powdered infant formula and 2.5 mg/kg in other foods and feed. The aim, according to the WHO, was to distinguish the low, unavoidable presence of melamine (for example, from food contact materials) from deliberate adulteration.
The lesson
If quality control measures an indirect indicator, fraud can target that indicator. A specification parameter that is met does not prove the product is authentic. It is also the most cited example of economic fraud turning into a serious health crisis: the FSSC 22000 guidance uses it as a case of direct risk to food safety.
2013: horsemeat declared as beef
What happened
In mid-January 2013, Irish inspectors announced they had found horsemeat in frozen beef burgers. In the following weeks, findings appeared in other processed meat products and in other European countries, leading to an EU-wide control plan.
The European Commission coordinated a control plan. In 2013, authorities carried out 4,144 horse DNA tests, with 193 positives (4.66%), and 3,115 phenylbutazone tests, a veterinary drug not permitted in animals intended for consumption, with 16 positives (0.51%). Private operators also performed 7,951 DNA tests, with 110 positives (1.38%). In the 2014 repeat, DNA positives fell to 0.61% of 2,622 tests.
What changed
That same year the EU Agri-Food Fraud Network began operating, connecting the Commission with liaison bodies in the Member States, Switzerland, Norway and Iceland, and cooperating with the European Anti-Fraud Office (OLAF) and Europol. It also consolidated the use of real-time PCR with a threshold of 1% by weight for official controls, as we explain in our article on authenticity methods.
The lesson
The risk hid in the complexity of the chain: the more intermediaries and transformations there are between the animal and the product, the more opportunities exist for substitution and the harder it is to trace. That is why documentary traceability needs analytical verification at critical points. And a vulnerability that nobody considered, as the FSSC 22000 guidance acknowledges happened with horsemeat, can become significant overnight.
2021-2022: honey extended with syrups
What happened
Between November 2021 and February 2022, EU and EFTA authorities sampled imported honey at border control posts in a coordinated action called "From the Hives". Of 320 samples, 147 (46%) were suspected of not complying with the EU honey directive, compared with 14% in the earlier 2015-2017 plan. In addition to the analyses by the Joint Research Centre, OLAF contributed forensic investigations that combined inspections, sampling and review of documents, computers and phone records, and that demonstrated collusion between exporters and importers.
The lesson
The classic isotope method that for years detected corn and cane syrups was not effective this time, which indicates that adulterators switched to syrups from other plants. Fraud evolves to evade known controls. A program that relies on a single routine analysis, without periodically reviewing whether it is still the right one, loses effectiveness without anyone noticing.
2023: cinnamon with lead chromate in children's purees
What happened
In autumn 2023, in the US, elevated levels of lead and chromium were detected in cinnamon applesauce in pouch packaging, a product consumed mostly by young children. By March 2024, the CDC counted 519 cases (136 confirmed, 345 probable and 38 suspected) in 44 states and Washington D.C. In the manufacturer's cinnamon samples, the FDA found 5,110 parts per million of lead, about 2,000 times higher than the values Codex had under consideration.
The FDA's main hypothesis was economically motivated adulteration: lead chromate has been illegally added to certain spices to increase their weight and enhance their color. Unprocessed cinnamon sticks contained no lead, which placed the contamination at the grinding stage. On its page on economic adulteration, the FDA mentions the use of lead-based industrial dyes in spices such as chili powder and turmeric, and Sudan dyes found in around 16% of the palm oil samples analyzed in 2016-2017.
The lesson
A minor ingredient can be the source of a serious problem: cinnamon was a small fraction of the finished product. The vulnerability assessment must also cover low-proportion ingredients, especially if they arrive ground or powdered, which is when adulteration is hardest to see.
What they have in common
- Economic fraud can become a health problem. Melamine, phenylbutazone and lead chromate show that whoever adulterates rarely evaluates the toxicity of what they add. This is a key difference from classic food safety, where the hazard is unintentional.
- Known controls get evaded. Nitrogen analysis in milk and isotope analysis in honey were bypassed because they were predictable.
- Supply chain complexity is a risk factor. Intermediaries, transformations and border crossings multiply the opportunities.
- Coordination between authorities changes the outcome. Coordinated EU plans and the combination of laboratory analysis with forensic investigation made it possible to gauge the scale of the problems.
- Standards come afterwards. Codex limits, cooperation networks and GFSI requirements emerged in response. Companies that get ahead with a solid vulnerability assessment, as required by GFSI schemes, arrive better prepared for the next case.
Seafood deserves a chapter of its own, because species substitution can hide hazards such as natural toxins: we cover it in our article on species substitution in fish and seafood.
Conclusion
Melamine, horsemeat, honey and cinnamon are different frauds with a common pattern: they exploited predictable controls, complex chains or poorly monitored ingredients, and in three of them the economic motivation ended in a health risk. Regulatory responses came after each case. For a company, the best way to use these lessons is to build them into its vulnerability assessment and supplier verifications today.
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Frequently asked questions
Why was melamine added to milk?
Because the usual methods for estimating protein measure nitrogen, and melamine has a very high nitrogen content. Adding it made diluted milk appear to meet the required protein content. According to data reported to the WHO, 294,000 children were affected and six died.
Was the horsemeat scandal a food safety problem?
It was first and foremost a labeling fraud: horsemeat sold as beef. The EU control plan also looked for phenylbutazone, a veterinary drug not permitted in animals for consumption, and found it in 0.51% of 3,115 tests in 2013.
What percentage of imported honey turned out to be suspect in the EU?
In the coordinated action "From the Hives" (November 2021 to February 2022), 147 of 320 samples, 46%, were suspected of containing added sugar syrups, compared with 14% in the 2015-2017 plan.
What lesson does the lead-contaminated cinnamon case leave for a food plant?
That minor ingredients must also be included in the fraud vulnerability assessment, especially those that arrive ground or powdered. Cinnamon was a small fraction of the puree, but it was enough to cause 519 cases of lead exposure in the US.