Researchers develop a new wine test that detects melatonin faster

Researchers have developed a new immunoassay to detect melatonin and 2-hydroxymelatonin in wine, offering a faster analytical tool for measuring two bioactive compounds that are usually assessed with more complex laboratory methods.

The work, published in Food Chemistry and indexed by PubMed, describes an assay built with the help of computer-aided design to create antibodies that recognize melatonin and its metabolite 2-hydroxymelatonin with high affinity. According to the study summary, the method was designed to improve selectivity and reduce interference from other substances present in complex samples such as wine.

Melatonin is best known as a hormone involved in regulating circadian rhythms, but it has also drawn attention for its antioxidant properties. Its presence, along with that of related metabolites, has been studied in food and beverage matrices as researchers look more closely at naturally occurring bioactive compounds and how they can be measured with greater precision.

The authors said accurate and efficient detection of melatonin and 2-hydroxymelatonin is important for research as well as for applications in food and pharmacology. In this case, the assay was developed as an immunochemical method, meaning it relies on antibodies rather than the larger and more technically demanding instrumentation often used in advanced chemical analysis.

The study summary indicates that the new test was validated against LC-MS/MS, or liquid chromatography tandem mass spectrometry, which is widely used as a reference technique for compound identification and quantification. That comparison is important because rapid screening tools are generally more useful to laboratories and producers when they can show results consistent with established instrumental methods.

For the beverage industry, the advance could have practical value beyond academic research. A quicker test for melatonin-related compounds may help wineries and other drinks producers strengthen analytical controls, support traceability work and monitor claims or specifications tied to product composition. Any use in labeling or regulatory review would depend on how such compounds are treated in specific markets, but the availability of a simpler screening method could make routine checks easier.

The report also points to a broader trend in beverage analysis: adapting biomedical-style testing tools for food products that contain many compounds capable of interfering with measurement. Wine is a particularly difficult matrix because of its mix of polyphenols, sugars, acids and fermentation-derived substances. An assay that can maintain specificity under those conditions may reduce the time needed for some forms of quality control.

The paper’s title refers to computer-aided design as a central part of the process. In practical terms, that means the researchers used computational methods to guide how the target molecules would be recognized during antibody development. That approach is increasingly used when scientists want to improve binding performance before moving into laboratory testing.

While the source material available through PubMed provides only a brief summary, it presents the assay as a sensitive and specific method for detecting both melatonin and 2-hydroxymelatonin. It also describes the tool as suitable for rapid and reliable analysis in biomedical research and food quality control.

That combination of speed and selectivity helps explain why such work matters in wine analysis. Traditional instrumental methods remain essential for confirmation and detailed quantification, but they can require specialized equipment, trained personnel and more time per sample. Immunoassays can serve as a practical complement when laboratories need to screen larger numbers of samples more efficiently.

The study adds to ongoing efforts to expand the analytical toolbox available for wine and other beverages, especially where producers and researchers are tracking minor compounds that may have nutritional, functional or commercial relevance.