Tecnología NIR de bajo costo acelera la autenticación y trazabilidad del café

Embrapa Rondônia's research has demonstrated that Near-Infrared (NIR) spectroscopy can quickly and cost-effectively identify the geographical origin of coffee and detect adulterations. This non-destructive technology generates "chemical fingerprints" of coffee beans, reinforcing geographical indications and combating fraud. Validated for Brazilian coffee, the technique improves traceability, certification, and access to specialty markets.

The NIR method works by measuring the interaction of light with the chemical compounds in a sample, producing a spectrum that functions as a unique identifier. By using reference databases and algorithms trained on chemical data, the system can identify the origin of a coffee bean and detect potential adulterations in just seconds, without damaging the sample. "This technology allows us to identify the terroir of the coffee, reaching down to the production zone," explains Enrique Alves from Embrapa Rondônia.

The research, conducted over five years as part of Michel Baqueta's doctoral studies at the State University of Campinas (Unicamp), in collaboration with Embrapa Rondônia's team, combined NIR spectroscopy with chemometric analysis. This approach allowed the creation of spectral patterns capable of distinguishing origins, detecting adulterations, and identifying specific terroirs. One notable finding was the clear differentiation between Amazonian robusta coffees (including indigenous varieties) and conilon coffees produced in Espírito Santo and Bahia, all belonging to the canephora group (Coffea canephora) and cultivated under different soil conditions, according to a press release.

This same methodology can be extended to other agro-food chains, such as cocoa, soybeans, dairy products, fruits, and wines, enhancing traceability and quality control. In validation tests, the technique successfully detected adulterations of coffee with yerba mate.

The application of NIR spectroscopy in the coffee sector offers significant advantages. By providing rapid and accurate information about the origin and authenticity of beans, it helps producers and traders ensure the quality and integrity of their products. This, in turn, strengthens geographical indications and certifications, which are crucial for differentiating high-quality, specialty coffees in international markets.

Moreover, the cost-effectiveness of NIR spectroscopy makes it accessible to small and medium-sized coffee producers, who often lack resources for traditional, more expensive testing methods. This accessibility empowers these producers to compete more effectively in the global market, as they can now provide verifiable proof of their coffee's origin and quality.

The research conducted by Embrapa Rondônia highlights the potential of advanced technologies to revolutionize the coffee industry. By improving traceability and combating fraud, NIR spectroscopy not only enhances the quality and reliability of coffee but also supports the sustainable development of coffee-producing regions in Brazil and beyond.

In conclusion, the development and validation of NIR spectroscopy for coffee authentication and traceability represent a significant leap forward in the agro-food sector. This innovative technology not only addresses the challenges of adulteration and fraud but also promotes fair trade practices, ensuring that consumers receive genuine, high-quality products. As the method continues to be refined and implemented, it has the potential to transform the global coffee market, benefiting producers, traders, and consumers alike.