Maple syrup, often called Canada’s “liquid gold,” has agelong been a target for fraudulent activities, specified arsenic the dilution oregon substitution with different syrups, owed to its precocious demand.
Amid threats from the United States of accrued tariffs and the imposition of a baseline tariff of 10% on each imports that aren’t compliant with the Canada-United States-Mexico Agreement, accrued maple syrup fraud is simply a possibility.
Food fraud, oregon economically motivated adulteration, is the deliberate misrepresentation of nutrient for economical gain. This tin see the substitution, dilution, summation and/or the removal of ingredients. Mislabelling of products is different signifier of nutrient fraud that tin hap astatine immoderate constituent successful the proviso chain, from workplace to fork. Food fraud is simply a multi-billion-dollar industry and poses superior risks. It tin harm user health, tarnish marque reputations and value, jeopardize the livelihood of morganatic producers and adjacent hamper biodiversity and conservational efforts.
The threats of tariffs connected Canadian goods by the U.S., which includes maple syrup and equipment utilized to marque it, has raised concerns connected some sides of the borderline astir terms increases and proviso shortages. Canada produces much than 70% of the world’s maple syrup and Québec is the superior of this production. In 2024, the state exported astir $450 cardinal worthy of maple syrup to the U.S.
Historic increases successful nutrient fraud
Historically, food fraud has accrued during harsh economical times, increasing fiscal pressures, pandemics, clime incidents, wars, proviso concatenation disruptions oregon immoderate different lawsuit that destabilizes the equilibrium betwixt nutrient proviso and demand. These circumstances often summation nutrient prices, creating an inducement for fraudsters to exploit the system.
From 2020 to 2024, the satellite faced important proviso concatenation disruptions owed to the covid-19 pandemic, determination wars and important clime events. Unsurprisingly, food fraud cases person accrued tenfold, according to caller estimations. Threats of higher tariffs could further lend to this occupation by expanding the likelihood that fraudsters volition substitute high-value foods for lower-value products.
Given what we person learned from past cases of nutrient fraud, threats of accrued tariffs causes uncertainty successful the proviso chain, expanding the hazard of fraudulent maple syrups from entering the market. To combat this threat, determination is simply a request for rapid, real-time and cost-effective methods to trial maple syrup for authenticity.
Methods for investigating maple syrup
Since the 1980s, assorted methods and tools person been developed oregon utilized to observe maple syrup adulteration. However, nutrient fraudsters continuously adapt to evade detection, making it progressively much hard to trial for maple syrup adulteration. The much analyzable the investigating methods, the much hard they are to circumvent.
Traditionally, maple syrup prime investigating involves measuring the dissolved sweetener contented successful syrup done a portion of measurement known arsenic degrees Brix. One grade Brix is equivalent to 1% sugar. However, applications whitethorn beryllium limited if chartless oregon non-conventional adulterants are used.
As fraud techniques go much sophisticated, caller approaches are needed to guarantee the authenticity of maple syrup. Non-targeted nutrient analytical methods, specified arsenic fluorescence spectroscopy, let for the screening of a wide scope of samples, creating a fingerprint of a sample. The fingerprints tin beryllium compared to a notation room of profiles, oregon aggregate attributes circumstantial to maple syrups, alternatively than conscionable one.
Testing maple syrup for glowing compounds
A caller study by our probe squad astatine the University of Guelph’s Corradini Lab explored however fluorescence fingerprints tin beryllium utilized to observe maple syrup adulteration. Fluorescence fingerprinting works by examining however internal molecules successful maple syrup glow erstwhile exposed to UV and disposable light. These unique, glowing fingerprints let for the detection of markers oregon features that whitethorn beryllium indicative of maple syrup fraud.

(Singh et al.), CC BY-NC-ND
Our survey explored the adulteration of amber and acheronian maple syrups, with communal maple syrup adulterants—namely beet, maize and atom syrups—at values ranging from 1 to 50%.
We mapped unsocial and distinctive features successful the fluorescence fingerprints, which were past utilized for differentiating axenic from adulterated syrups. When exposed to UV and disposable light, maple syrup features changed depending connected the type—beet, maize oregon atom syrups—and magnitude of adulterant.
AI and instrumentality learning for improved detection
Using the markers of maple syrup identity, we were capable to use AI to analyse aggregate fluorescent features simultaneously. This allowed for the recognition of axenic maple syrups from adulterants, with accuracy ranging from 75 to 99%.
In fact, analyzing the fluorescence fingerprints of axenic and adulterated syrups with the assistance of AI and instrumentality learning techniques improved detection by up to 30%, and identified adulterants astatine levels little than 2 per cent.
However, expanding the fluorescence fingerprint notation room tin amended the accuracy and reliability of results. AI models often necessitate precise ample and extended databases. This volition beryllium important for knowing and accounting for however factors similar the environment, geographic determination and processing conditions whitethorn impact the maple syrup glow. The usage of AI to analyse fluorescent markers successful maple syrup could let for accelerated and effectual recognition of suspicious fraudulent samples.
With the accrued hazard of nutrient fraud owed to threats of accrued U.S. import tariffs connected Canadian products, combining AI and maple syrup fingerprinting tin observe maple syrup fraud. This volition guarantee that consumers person safe, high-quality foods portion protecting the individuality of 1 of Canada’s astir iconic products.
Maleeka Singh, PhD Candidate, Food Science, University of Guelph; Maria G. Corradini, Associate Professor – Arrell Chair successful Food Quality, University of Guelph, and Robert Hanner, Professor, Department of Integrative Biology, University of Guelph. This nonfiction is republished from The Conversation nether a Creative Commons license. Read the original article.