Find records of fraud such as those discussed in this column and more in the Food Fraud Database, owned and operated by Decernis, a Food Safety Tech advertiser. Image credit: Susanne Kuehne.
Spices have been an ongoing hot target for fraudulent activity, whether it is the addition of inedible substances like dyes, or bulking agents, such as brick powder, other plant material, sawdust and many other, potentially hazardous substances. A relatively new technology, next-generation sequencing (NGS), enables to analyze the DNA of complex samples such as spices and herbs. The DNA findings are compared to a database and allow to detect many thousands of species in one test. Currently, working groups are developing standardized methods for such authenticity tests.
Find records of fraud such as those discussed in this column and more in the Food Fraud Database. Image credit: Susanne Kuehne
Grimm’s Fairy Tale got it right after all: The “Golden Donkey” (German expression for “Golden Goose”) does indeed exist. In India, officials shut down a factory producing fake turmeric, chili powder and other spices and condiments. Authorities confiscated mostly inedible and hazardous ingredients, which included man-made pigments and colorants, acids, hay and last but not least, donkey dung. The health impact and where the “spices” were sold in retail are under investigation.
It is fair to say that 2020 was a challenging year with wide-ranging effects, including significant effects on our ongoing efforts to ensure food integrity and prevent fraud in the food system. COVID-19 caused major supply chain disruptions for foods and many other consumer products. It also highlighted challenges in effective tracking and standardization of food fraud-related data.
Let’s take a look at some of the notable food fraud occurrences in 2020:
Organic Products. The Spanish Guardia Civil investigated an organized crime group that sold pistachios with pesticide residues that were fraudulently labeled as organic, reportedly yielding €6 million in profit. USDA reported fraudulent organic certificates for products including winter squash, leafy greens, collagen peptides powder, blackberries, and avocados. Counterfeit wines with fraudulent DOG, PGI, and organic labels were discovered in Italy.
Herbs and Spices. Quite a few reports came out of India and Pakistan about adulteration and fraud in the local spice market. One of the most egregious involved the use of animal dung along with various other substances in the production of fraudulent chili powder, coriander powder, turmeric powder, and garam masala spice mix. Greece issued a notification for a turmeric recall following the detection of lead, chromium, and mercury in a sample of the product. Belgium recalled chili pepper for containing an “unauthorized coloring agent.” Reports of research conducted at Queen’s University Belfast also indicated that 25% of sage samples purchased from e-commerce or independent channels in the U.K. were adulterated with other leafy material.
Dairy Products. India and Pakistan have also reported quite a few incidents of fraud in local markets involving dairy products. These have included reports of counterfeit ghee and fraudulent ghee manufactured with animal fats as well as milk adulterated with a variety of fraudulent substances. The Czech Republic issued a report about Edam cheese that contained vegetable fat instead of milk fat.
Meat and Fish. This European report concluded that the vulnerability to fraud in animal production networks was particularly high during to the COVID-19 pandemic due to the “most widely spread effects in terms of production, logistics, and demand.” Thousands of pounds of seafood were destroyed in Cambodia because they contained a gelatin-like substance. Fraudulent USDA marks of inspection were discovered on chicken imported to the United States from China. Soy protein far exceeding levels that could be expected from cross contamination were identified in sausage in the Czech Republic. In Colombia, a supplier of food for school children was accused of selling donkey and horse meat as beef. Decades of fraud involving halal beef was recently reported in in Malaysia.
Alcoholic Beverages. To date, our system has captured more than 30 separate incidents of fraud involving wine or other alcoholic beverages in 2020. Many of these involved illegally produced products, some of which contained toxic substances such as methanol. There were also multiple reports of counterfeit wines and whisky. Wines were also adulterated with sugar, flavors, colors and water.
We have currently captured about 70% of the number of incidents for 2020 as compared to 2019, although there are always lags in reporting and data capture, so we expect that number to rise over the coming weeks. These numbers do not appear to bear out predictions about the higher risk of food fraud cited by many groups resulting from the effects of COVID-19. This is likely due in part to reduced surveillance and reporting due to the effects of COVID lockdowns on regulatory and auditing programs. However, as noted in a recent article, we should take seriously food fraud reports that occur against this “backdrop of reduced regulatory oversight during the COVID-19 pandemic.” If public reports are just the tip of the iceburg, 2020 numbers that are close to those reported in 2019 may indeed indicate that the iceburg is actually larger.
Unfortunately, tracking food fraud reports and inferring trends is a difficult task. There is currently no globally standardized system for collection and reporting information on food fraud occurrences, or even standardized definitions for food fraud and the ways in which it happens. Media reports of fraud are challenging to verify and there can be many media reports related to one individual incident, which complicates tracking (especially by automated systems). Reports from official sources are not without their own challenges. Government agencies have varying priorities for their surveillance and testing programs, and these priorities have a direct effect on the data that is reported. Therefore, increases in reports for a particular commodity do not necessarily indicate a trend, they may just reflect an ongoing regulatory priority a particular country. Official sources are also not standardized with respect to how they report food safety or fraud incidents. Two RASFF notifications in 2008 following the discovery of melamine adulteration in milk illustrate this point (see Figure 1). In the first notification for a “milk drink” product, the hazard category was listed as “adulteration/fraud.” However, in the second notification for “chocolate and strawberry flavor body pen sets,” the hazard category was listed as “industrial contaminants,” even though the analytical result was higher.1
Figure 1. RASFF notifications for the detection of melamine in two products.1
What does all of this mean for ensuring food authenticity into 2021? We need to continue efforts to align terminology, track food fraud risk data, and ensure transparency and evaluation of the data that is reported. Alignment and standardization of food fraud reporting would go a long way to improving our understanding of how much food fraud occurs and where. Renewed efforts by global authorities to strengthen food authenticity protections are important. Finally, consumers and industry must continue to demand and ensure authenticity in our food supply. While most food fraud may not have immediate health consequences for consumers, reduced controls can lead to systemic problems and have devastating effects.
Reference
Everstine, K., Popping, B., and Gendel, S.M. (2021). Food fraud mitigation: strategic approaches and tools. In R.S. Hellberg, K. Everstine, & S. Sklare (Eds.) Food Fraud – A Global Threat With Public Health and Economic Consequences (pp. 23-44). Elsevier. doi: 10.1016/B978-0-12-817242-1.00015-4
Botanical ingredients are important to the food and beverage industries as well as the dietary supplements industry. Botanicals are plants or specific plant parts (leaves, roots, bark, berries, etc.) that are used for particular properties. These properties can be therapeutic or related to color, flavor or other attributes. Botanicals include extracts such as Ginkgo biloba, saw palmetto, and elderberry as well as herbs and spices used in cooking, essential oils, pomegranate juice and extracts, and olive oil. There is a substantial overlap between botanical products used in the herb and supplement industries and those used in foods and beverages. Many “conventional” foods and beverages include botanical extracts or other ingredients to advertise a therapeutic effect.
In 2014, FDA issued a final guidance for industry related to labeling of liquid dietary supplements (vs. beverages). FDA noted, in their rationale for the guidance, two trends:
“First, we have seen an increase in the marketing of beverages as dietary supplements, in spite of the fact that the packaging and labeling of many liquid products represent the products as conventional foods. Products that are represented as conventional foods do not meet the statutory definition of a dietary supplement…and must meet the regulatory requirements that apply to conventional foods.
Second, FDA has seen a growth in the marketplace of beverages and other conventional foods that contain novel ingredients, such as added botanical ingredients or their extracts. Some of these ingredients have not previously been used in conventional foods and may be unapproved food additives. In addition, ingredients that have been present in the food supply for many years are now being added to beverages and other conventional foods at levels in excess of their traditional use levels or in new beverages or other conventional foods. This trend raises questions regarding whether these ingredients are unapproved food additives when used at higher levels or under other new conditions of use. Some foods with novel ingredients also bear claims that misbrand the product or otherwise violate the FFDCA.”
The American Botanical Council (ABC) has been publishing information on the safe, responsible and effective use of botanicals since 1988, including the quarterly journal HerbalGram and a book of herb monographs The ABC Clinical Guide to Herbs. In order to help combat the increasing problem of adulteration in the industry, the Botanical Adulterants Prevention Program (BAPP) was launched in 2010 by ABC along with the American Herbal Pharmacopeia and the University of Mississippi National Center for Natural Products Research. The goal of BAPP is to educate members of the herbal and dietary supplement industry about ingredient and product adulteration through the publication of documents such as adulteration bulletins and laboratory guidance documents. The information in these documents helps ensure the identity, authenticity and safety of botanicals along the supply chain.
Karen Everstine will be discussing food fraud during the 2020 Food Safety Consortium Virtual Conference Series | An example of the Botanical Adulterants Prevention Bulletin for cranberry is seen in Figure 1. It includes a description of the species that can be labeled as cranberry in the United States, a brief description of the marketplace, information on potential adulterants in cranberry fruit extract and other cranberry products, and guidance on analytical methods to test cranberry products for adulteration.
Decernis has been working with the Botanical Adulterants Prevention Program (BAPP) to integrate links to their expert content into the Food Fraud Database (FFD). This will ensure our users can better develop ingredient specifications, manage risk, and protect their consumers by leveraging this content for food fraud and herbal ingredient fraud prevention. We are currently incorporating three types of BAPP documents into FFD:
Adulterants Bulletins. Information and links to these documents will be entered as Inference records in FFD. We are extracting ingredient and adulterant names (including Latin names as synonyms) from the document, assigning “Reasons for Adulteration,” and providing a link to the full document on the BAPP website.
Adulteration Reports. Information and links to these documents will also be entered as Inference records in FFD. We are extracting ingredient and adulterant names from the document, assigning “Reasons for Adulteration,” and providing a link to the full document on the BAPP website.
Laboratory Guidance documents. Information and links to these documents will be entered as both method record and inference records in FFD. We are extracting ingredient and adulterant names from the document, assigning “Reasons for Adulteration,” and providing a link to the full document on the BAPP website.
Decernis analysts are currently integrating this content into FFD, which will be uploaded to the system between now and early September.
Find records of fraud such as those discussed in this column and more in the Food Fraud Database. Image credit: Susanne Kuehne.
The high value of spices makes them one of the most popular targets for intentional adulteration. Researchers in Brazil developed an efficient method for fraud detection: Near-infrared spectrometer (NIR) associated with chemometrics. This method is able to detect adulterants like corn flour and cassava in spice samples, revealing a high rate of adulteration, between 62% for commercial black pepper and 79% for cumin samples.
Find records of fraud such as those discussed in this column and more in the Food Fraud Database. Image credit: Susanne Kuehne.
Spices claim high prices and are a popular target for food fraud. The Khyber Pakhtunkhwa (KP) Food Autority discarded 5,000 kg of adulterated spices in a Pakistan, and legal action will be taken against the perpetrators. The fraudulent additions included inedible items and unauthorized food colors.
The following infographic is a snapshot of the hazard trends in herbs and spices from Q3 2019. The information has been pulled from the HorizonScan quarterly report, which summarizes recent global adulteration trends using data gathered from more than 120 reliable sources worldwide. Over the next several weeks, Food Safety Tech will provide readers with hazard trends from various food categories included in this report.
Honey is defined as “the natural sweet substance produced by honey bees” from the nectar of plants. However, there is not currently an FDA standard of identity for honey in the United States, which would further define and specify the allowed methods of producing, manufacturing and labeling honey (there is, however, a nonbinding guidance document for honey). Some of the details of honey production that a standard of identity might address include allowable timing and levels of supplemental feeding of bees with sugar syrups and the appropriate use of antibiotics for disease treatment.
In circumstances where strict regulatory standards for foods are not available, they may be created by other organizations.
What Is a Food Standard?
A food standard is “a set of criteria that a food must meet if it is to be suitable for human consumption, such as source, composition, appearance, freshness, permissible additives, and maximum bacterial content.”1
To ensure quality, facilitate trade, and reduce fraud, everyone in the supply chain must have a shared expectation of what each food or ingredient should be. Public standards set those expectations and allow them to be shared. They help ensure that stakeholders have a common definition of quality and purity, as well as the test methods and specifications used to demonstrate that quality and purity. Public standards help ensure fair trade, quality and integrity in food supply chains.
How Is a Standard Different from a Method?
A method is generally an analytical technique to assess a particular property of the content or safety of a food or food ingredient. For example, methods for detection of nitrates in meat products or baby food, coliforms in nut products, or high fructose syrups in honey. Methods are an important component of food standards.
A food standard goes a step further and provides an integrated set of components to define a substance and enable verification of that substance. Standards generally include a description of the substance and its function, one or more identification tests and assays (along with acceptance criteria) to appropriately characterize the substance and ensure its quality, a description of possible impurities and limits for those impurities (if applicable), and other information as needed (see Figure 1).
Figure 1. The Anatomy of an FCC Standard (Source: Food Science Program, Food Chemicals Codex, USP)
Figure 1. The Anatomy of an FCC Standard (Source: Food Science Program, Food Chemicals Codex, USP)
A standard defines both what a food or food ingredient should be and documents how to demonstrate compliance with that definition.
Public Standards and Food Fraud Prevention
Many of the foods prone to fraud are those that are not simple food ingredients, but agricultural products that can be more complex to characterize and identify (such as honey, extra virgin olive oil, spices, etc.). Milk products are an example of a commodity that is prone to fraud with a wide range of adulterants (for example, fluid cow’s milk is associated with 155 adulterants in the Food Fraud Database). Ensuring the quality and purity of a product link milk requires implementation of multiple analytical techniques or the development of non-targeted methods.
The creation of effective public standards with input by a range of stakeholders will be particularly important for ensuring the quality, safety and accurate labeling of these high value commodities in the future.
Reference
A Dictionary of Food and Nutrition 2005, Oxford University Press.
Resources
The Food Chemicals Codex is a source of public standards for foods and food ingredients. It was created by the U.S. FDA and the National Institute of Medicine in 1966 and is currently published by the nonprofit organization USP. The FCC contains 1250 standards for food ingredients, which are developed by expert volunteers and posted for public comment before publication.
The Decernis Food Fraud Database is a continuously updated collection of food fraud records curated specifically to support vulnerability assessments. Information is gathered from global sources and is searchable by ingredient, adulterant, country, and hazard classification. Decernis also partners with standards bodies to provide information about fraudulent adulterants to support standards development.
Food fraud usually does not make people sick, but we know that it can. Fraud in spices, and particularly lead adulteration of spices, appears to be getting more attention lately. Herbs/spices is one of the top five commodity groups prone to fraud, according to the data in our Food Fraud Database. Looking at the past 10 years of data for herbs/spices, chili powder, turmeric, and saffron have the highest number of fraud records and chili powder, turmeric, and paprika have the highest number of distinct adulterants associated with them (see Figure 1).*
Comparison of herb/spice ingredients by the number of distinct adulterants and number of records (2010-2019). Source: Decernis Food Fraud Database
Fraud in spices usually involves “bulking up” the spice with plant materials or other substances or the addition of unapproved coloring agents. A wide range of pigments have been detected in spices, from food-grade colors to industrial pigments, including lead-based pigments. Lead oxide was added to paprika in Hungary in the mid-1990s to improve the color, causing lead poisoning in many consumers. Lead chromate is another lead-based pigment that has been used to add color to spices. In 2017, ground cumin was recalled in the United States due to “lead contamination,” which was determined by the New York State Department of Agriculture and Markets to be lead chromate.
However, there is also an issue with lead contamination of agricultural products due to environmental contamination and uptake from the soil. Therefore, when recalls are posted for spices due to “elevated lead levels,” it may not immediately be apparent if the lead was due to environmental factors or intentionally added for color.
Laboratory methods for detecting the form of lead present in food are challenging. Typical tests look to detect lead, but do not necessarily identify the form in which it occurs. Testing for lead chromate, specifically, may be inferred through a test for both lead and chromium, and recent studies have looked at the development of more specific methods. There is not currently an FDA-established guideline for lead levels in spices although, the maximum allowable level for lead in candy is 0.1 ppm (0.00001%). New York State recalls spices with lead over 1 ppm and a Class 1 recall is conducted with lead over 25 ppm.
Two recent public health studies have evaluated lead poisoning cases and have linked some of those cases to consumption of contaminated spices. One study, published earlier this year, analyzed spice samples taken during lead poisoning investigations in New York over a 10-year period. The investigators tested nearly 1,500 samples of spices (purchased both domestically and abroad) and found that 31% of them had lead levels higher than 2 ppm. This study found maximum lead levels in curry of 21,000 ppm, in turmeric of 2,700 ppm, and in cumin of 1,200 ppm.
Another study conducted in North Carolina looked at environmental investigations in homes and testing of various products related to 61 cases of elevated lead levels in children over an eight-year period. The investigators found lead above 1 ppm in a wide variety of spices and condiments, with some levels as high as 170 ppm (in cinnamon) and 740 ppm (in turmeric).
A separate study, conducted in Boston, involved the purchase and analysis of 32 turmeric samples. The researchers detected lead in all of the samples (with a range of 0.03-99.50 ppm), with 16 of the samples exceeding 0.1 ppm (the FDA limit for lead in candy). The paper concluded that turmeric was being “intentionally adulterated with lead” and recommended additional measures on the part of FDA to reduce the risk of lead-contaminated spices entering the U.S. market and the establishment of a maximum allowable level of lead in spices.
Although the above studies did not report the form of lead detected, the high level of lead in many of the samples is not consistent with environmental contamination. A newspaper report in Bangladesh indicated that turmeric traders used lead chromate to improve the appearance of raw turmeric and quoted one spice company as saying that some of their suppliers admitted to using lead chromate. Lead consumption can be extremely toxic, especially to children. There is evidence that lead contamination of spices in the United States is an ongoing problem and that some of it is due to the intentional addition of lead-based pigments for color. This should be one area of focus for industry and regulatory agencies to ensure we reduce this risk to consumers.
*Given the nature of food fraud, it is fair to say that the data we collect is only the tip of the food fraud “iceberg”. Therefore, while this data indicates that these ingredients are prone to fraud in a number of ways, we cannot say that these numbers represent the true scope of fraud worldwide.
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