Food Fraud Advisors

You are here: Home / Archives for detection

by

Fraud rates of 33% in seafood (USA)

A survey of imported frozen shrimp, squid and tilapia products found 36% (n = 28) were affected by short-weighting, which is when the package contains less weight than declared and, for frozen seafood, when the product or package contains too much water glaze or ice (“overstating the net weight of frozen seafood by including the weight of glazing (ice) is not permitted”).

Close-up of a pile of frozen shrimp.
The frozen seafood products were affected by short-weighting. Image: IrinaKur/BigStock.

 

The survey was conducted by the U.S. Food and Drug Administration (FDA) during 2022-2024. The sampling included both targeted and general surveillance samples of both raw and cooked products, covering 12 businesses from 4 countries. The samples were collected during import, prior to release into U.S. commerce. Each sample consisted of 48 units from the same production lot.

Most of the samples (25 of 28) were shrimp, with 2 squid and 1 tilapia sample included. Both squid samples were found to violate short-weight rules (100%, n = 2). Eight shrimp samples were violative (32%, n = 25). The tilapia sample was compliant – United States 02/09/2025.

Source: https://www.fda.gov/food/economically-motivated-adulteration-food-fraud/sample-collection-and-analysis-imported-frozen-seafood-economically-motivated-adulteration-year-2022

This article was originally published at The Rotten Apple – a weekly newsletter for food professionals

 

by

Undercover honey investigators

I previously wrote about how my daughter, who loves honey and eats a lot of it here in Australia, complained that all the honey she tasted while travelling in Europe had no flavour, telling me it tasted like sugar water.

A German news outlet has published a documentary about their investigations into honey fraud in Europe and it certainly aligns with my daughter’s “sugar water” opinion.

While the video begins with all the information we have come to expect from honey fraud stories, such as the differences between various test methods and regulatory standards, things soon get more interesting.

Journalists set up their own fake honey business, visit honey traders and processors with hidden cameras, and even send people to China to collect evidence of fraudulent practices.

“The syrup really passes the NMR test?” asks an undercover investigator of a Chinese syrup supplier. The answer is simple: “Yes”.

The journalists even make their own fake honey using special syrups designed to trick the nuclear magnetic resonance test (NMR) widely used in Europe for honey authentication. And they succeed: a blend of authentic honey and 20% special syrup was identified in the NMR test as authentic. Blends made with ordinary syrups were flagged as inauthentic.

“The math is simple”, an anonymous German honey trader tells them, “If I add 20% syrup to my honey, my margin would almost double. You have no chance against such competitors.”

For English subtitles, click CC on the YouTube display to activate captions, then in Settings choose ‘Subtitles’, then ‘Auto-translate’, then ‘English.

This article was originally published at The Rotten Apple – a weekly newsletter for food professionals

by

Preventing food fraud: testing is not the answer

Fraudulently adulterated food is receiving a lot of attention at the moment. While it is widely acknowledged that food fraud is a large and expensive problem requiring urgent action there is not a lot of practical advice available about exactly what actions food businesses should take to prevent, deter and detect food fraud. And, although published advice about direct action is rare, there is plenty of commentary that discusses the issue in general terms, including one very common refrain: food testing is not the answer.

Food safety hang-ups

One of the reasons we so often hear that testing is not the answer is that many food fraud commentators come from a food safety and quality assurance background. As such, our unwillingness to rely on testing for food fraud can be explained in part by our familiarity with food safety systems. Within the realms of food safety, testing can achieve nothing on its own; the prevention of risks and control of hazards is much more effective and efficient, with testing used simply to verify that the system is working.

For those who are less familiar with food safety systems, let’s take a closer look. For the sake of simplicity, imagine a hypothetical food safety system that is designed solely to prevent the growth of a pathogenic microorganism in salami. If the system relied solely on testing, one would have to take a sample from every pack of salami, test for pathogens and then discard packs which were found to be contaminated. A missed test could have deadly consequences. Worse still, the sampling itself could lead to contamination. A better way is to use preventive control methods to stop hazards before they arise and carefully monitor critical operations in the production process so that the finished product is safe. This combination of prevention and monitoring is the basis for every modern food safety system. Within those systems the food must still be tested to verify that the system is working but in fact every piece of salami that is consumed without causing illness is a form of ongoing verification.

Dairy Processing

Fraudulently adulterated food is very different from accidentally contaminated food. It usually doesn’t make people sick and can rarely be identified as fraudulent by the consumer. People who adulterate food for financial gain aim to avoid detection and for that reason adulterated food rarely causes acute illness. In fact, the Chinese government is currently assuring its citizens that the large volumes of counterfeit baby formula within that market are safe to consume. There have been instances of fraudulent food that caused illness and death, including the melamine milk scandal in China and toxic mineral oil passed off as olive oil in Spain. In another famous case, a carcinogenic industrial dye was used to make paprika powder appear fresher. In each of these cases it was some time before the link between illness and adulterated food was found.

Criminals are smarter than Salmonella.

The prevention of microbial contamination and growth in food can be achieved in a few simple steps using well-understood methods; Salmonella hasn’t figured out how to outsmart a thermal kill step yet. But people who seek to make money from adulterating food have much more imagination than your average bacterium. While there are only about 120 food borne pathogens known to man, there are almost unlimited ways to tamper with food, meaning many different types of controls are required. Unfortunately, any effective control method can be discovered and then outsmarted by a clever fraudster, making reliance on prevention a risky proposition. And the worst part is that no matter how effective a fraud prevention system is, at the end of the day it is indistinguishable from an ineffective fraud prevention system to the naked eye; without very frequent testing there is no way to know the system is working.

More testing?

Testing is a key element of effective fraud prevention. I envisage a day when every food manufacturer tests vulnerable raw materials before they are used in production, where every supermarket has the technology to verify that their food is authentic before they place it on their shelves and where even local restaurants will have access to cheap and fast authenticity testing. Testing holds the answers to many of our current food fraud challenges.  However, testing can be expensive, time consuming and much less effective than we would like.

Pesticide residue in food

A key challenge to the efficacy of testing is that when it comes to food fraud we can never be sure of the adulterant that might be present. Many currently available test methods are targeted for a particular adulterant, and are not designed to detect adulterants that are unexpected. Non-targetted tests are rapidly being developed but there are still relatively few that have been properly validated, a process that requires expensive cross-testing against other methods such as botanical testing, DNA-based methods and classical chemistry.

In less than five years, claim the makers of new rapid testing technology, we will be able to hold a scanner in our hand that can tell us the entire molecular makeup of our food. I think we will have to wait a little longer than that; food is complex and a huge amount of research will be required before we can properly interpret the results of complex molecular ‘scans’ of every food on the planet. But testing is an important tool in our fight to ensure an authentic food supply, and that’s a goal worth striving for.

Read about the latest food fraud analytical technologies here.

Are you ready to start testing for food fraud? Use our testing checklist to find out.

Want more stories?  Like us on Facebook to receive news items like these straight to your news feed. Food Fraud Advisors on Facebook

by

Honey Fraud This Month: The Good, The Bad and The Ugly

Honey authenticity is all over the (food fraud) news this month.  There’s good news.  And bad.

Here’s what’s happening in honey fraud right now, from Karen Constable of authenticfood.co and Food Fraud Advisors.

 

 

Video transcript:

(Karen Constable) “It’s been a tough year for honey.  There has been lots of commentary about food fraud in honey, following a big recall in the UK at the end of last year and controversy over honey testing methods.  It’s never good to hear about food fraud issues, but there is a silver lining.

The Good

The Canadian government last year committed to spending more than $20 million on food fraud testing and intelligence gathering over a five year period.  Honey is one food product that has been chosen for surveillance by the Canadian Food Inspection Agency.

The CFIA published their honey surveillance results this month and guess what?! Authenticity is up and food fraud is down compared to last year.

The CFIA sampled both the marketplace at large and also a number of bulk honey importers and processors that were deemed to be high risk.  Only 13% of samples were deemed not-authentic, compared to 22% the previous year.  That’s a significant improvement!

The CFIA used the results of their previous honey surveillance work to design a targeted sampling plan.  Those samples that they targeted had risk factors such as a history of non-compliance, known preventive controls deficits and unusual trading patterns.  This type of targeting sampling, in which previous results are used to focus on known problem areas, is a great way to maximise the value of authenticity testing (which can be expensive).  Way to go, Canadia! (PS for more on sampling methodology, click here)

Of those samples collected from the marketplace (that is, without being targeted towards high-risk products), 98% were authentic and the only products that had ‘unsatisfactory results’ were imported products.

So testing = good.  For my food safety viewers, it’s worth noting that – unlike micro testing – food authenticity testing can not only provide valuable insights into the occurrence of food fraud but also helps to prevent it.  The fact that someone is paying attention, and doing testing can effectively drive reductions in fraud, as we have seen with the Canadian honey testing regime.  My prediction is that next year’s surveillance will have even better results than this year’s.  And that’s something to be happy about!

The Bad

The Canadian government isn’t the only one that’s been testing honey this year.  The Indian Centre for Science and Environment and a government-funded institute in the Philippines have also published honey testing results this month.

In the Philippines, a survey of 74 locally-produced honeys purchased online found that 87% of them contained sugar syrup.  Ie rendering them NOT authentic honey.  More than 80% of these products actually contained no honey at all and were just made from sugar syrup.

These are some of the worst authenticity statistics that I have ever seen!

Local products purchased in brick and mortar stores fared a little better in this study, but the results were still bad, with around 75% of samples containing adulterant(s). Interestingly, in the Philippines, imported honeys performed significantly better than the locally-produced honeys, the opposite of what was seen in Canada.

So those results were pretty bad, but it is good to see authenticity testing being done in the public arena more frequently than in the past.

The Ugly

Yep, this is really ugly.

There’s testing and then there’s testing….

India is another country that is funding food adulteration prevention. And, of course, that’s a good thing.  And they are testing honey.

However, like many countries, India’s legal definition of honey is based on the chemical signature of the sugars in the product, which is verified using C3 and C4 testing.

In December, The Centre for Science and Environment (CSE, India) reported a very high proportion of ‘inauthentic’ honeys in a survey that made use of both C3/C4 tests and more sophisticated testing that makes use of NMR (nuclear magnetic resonance) analysis.   Some honeys passed the C3/C4 tests but ‘failed’ the NMR tests.

Investigators from CSE claim this is due to the products being made with special syrups that are designed to ‘trick’ the C3/C4 tests. They allege that these syrups can be purchased cheaply via online trade portals.  The syrups are apparently marketed as “all pass” syrups because the suppliers claim they can pass the Indian government’s authenticity tests.

The CSE say that their own testing has confirmed that samples containing up to 50 percent of “all pass” syrup pass the tests.

Wrap up

There’s big money to be made from food fraud, as I have said before.  I have even heard it said that olive oil fraud is 3 times more profitable than smuggling cocaine – as well as being much less risky. (I haven’t been able to find the original source of that comment, I heard it at a food fraud conference in 2017).  And where there is money to be made, criminals will find ways to cheat the system.

Sadly, worldwide volumes of honey production are way down and predicted to fall even further due to climate change and bee colony diseases. That makes genuine honey more scarce, more valuable and, as a result, more profitable to fake.  Honey fraud is – unfortunately – here to stay.

My hope is that organisations like the Canadian Food Inspection Agency and the CSE in India continue to keep the pressure on honey fraudsters. Let’s keep making their lives hell!”

 

 

 

 

 

by

Oregano Fraud; six things every food professional needs to know

1. What happened?

Testing was conducted by the Australian consumer group Choice, mirroring tests conducted in the UK and published by the UK Consumer Group Which? in 2015.  A selection of packs of dried oregano were purchased from supermarkets (grocery stores), delis (specialty food stores) and grocers (produce stores) in three cities in Australia and a single sample of each was tested.  Seven of the twelve samples, over fifty percent, were found to be inauthentic, with the inauthentic samples containing between 10% and 90% of ingredients other than oregano, including olive leaves and sumac leaves.

2. Why test oregano?  

Herbs and spices are one of the rock-stars of food fraud; their complex cross-border supply chains, high price per kilogram and the fact that they are often sold in powder or particulate forms make them prime targets for adulteration, dilution and substitution with cheaper materials.  

oregano adulteration
Source: Elliott, C. (2016) Addressing complex and critical food integrity issues using the latest analytical technologies

 

Why oregano in particular?  Professor Elliott, Director of the Institute for Global Food Security, and an international authority on food fraud conducted testing on oregano in the UK in 2015, the results of which were published by the UK Consumer group Which?.  It is possible that Prof Elliott used rapid evaporative ionization mass spectrometry (REIMS), a test method recently made available by Waters Corporation, although Which did not disclose the test method. REIMS makes use of a rapid sampling method that produces vapour which is analysed using time of flight mass spectrometry.  Sophisticated software compares molecular markers in the resulting spectrum with those in known materials in a database, allowing a sample to be quickly identified as belonging to a particular product type or not.  The method has huge potential for testing food authenticity, with one of the advantages being that unlike other tests for adulteration there is no need to specify which adulterants to seek.  A downside is that many hundreds or thousands of tests must be performed and compared to traditional analytical methods to create a database before the method can be used with confidence to determine the authenticity of any given material.

Professor Elliott recently revealed that Waters Corporation and Queens University, Belfast worked together to build a database of oregano samples (Elliott, C. (2016) Addressing complex and critical food integrity issues using the latest analytical technologies).  This means that oregano is one of the few materials that can currently benefit from accurate authenticity testing using the REIMS method. 

3.  Are the results unexpected?

Global food fraud commentators attribute the presence of significant concentrations of adulterants or diluents in dried herbs to economically motivated food fraud in most cases, as opposed to seafood mislabelling which sometimes occurs due to unintentional errors in species identification.  Food fraud is estimated to cost the United Kingdom one billion pounds each year.  It is thought to be very common among some food types, including herbs and spices.

4. Who is responsible?

It is highly unlikely that any of the brand owners named in the Choice report were aware that they were selling adulterated herbs.  Most if not all of the brands included the Australian testing would have been sourced and packed under well-controlled systems that include vendor approval processes, formal specifications for incoming materials (such as bulk herbs) as well as certificates of analysis and declarations of conformity to specification.   The fraudulent tampering probably occurred further up the supply chain during drying, bulk packing, shipping or storage.  Interestingly, all seven adulterated samples contained olive leaves and two contained sumac leaves.  It is possible that tampering occurred in two different points within the supply chain for some products; perhaps one fraudster added olive leaves to bulk lots of the herb at a location close to the oregano growing area and sumac leaves were added by someone else at a later date.

5. What are the legal and financial ramifications?

The sale of misrepresented products is a breach of Australian consumer law and ignorance cannot be used as a defense.  The incidences were investigated by the Australian Competition and Consumer Commission (ACCC), an independent authority of the Australian government.  One company was fined a substantial sum for selling product that contained only 50% oregano leaves.  It is likely that other businesses that had been supplied with inauthentic herbs sought financial redress from their suppliers, either through purchasing contract penalties or through private legal action.

When a food business chooses to voluntarily recall or withdraw their products from the marketplace they may try to claim the costs against their business insurance. Insurance companies will seek to recover their costs from further up the food supply chain and this may have an impact on premiums in coming years.

6. What should food businesses do?

No food business is immune from economically motivated food fraud and preventing food fraud from affecting a business is a multi-functional task that should involve personnel from purchasing, finance and legal departments as well as food safety and quality personnel.  In the short term however, there are some things that can be done by food safety and quality personnel to help prevent, deter and detect food fraud without a lot of investment from other parts of a food business: 

  1. Update your purchasing specifications to include authenticity requirements.
  2. Review your vendor approvals systems and revise questionnaires and requirements if required.  Consider implementing more stringent requirements for those suppliers that provide vulnerable materials.
  3. Request certificates of analysis (CofA) from suppliers of vulnerable materials
  4. Begin a testing regime for vulnerable materials
  5. Investigate the costs and benefits of supply chain audits, including whether ad-hoc, one-off visits to certain suppliers might be worthwhile
  6. Request tamper-evident packaging and bulk container tamper seals for vulnerable raw materials
  7. Ask suppliers of vulnerable materials to undertake a mass balance exercise at their facility or further upstream in the supply chain.
  8. Make a business case for switching suppliers of materials that prove to be consistently problematic and present it to your purchasing department.

Want to learn more about food fraud mitigation in the spice industry?  This article in Food Safety Magazine provides an excellent insight.