From brewing by-products to ingredients for nutraceuticals, cosmetics and functional food: hops reveal a surprising potential for the agri-food supply chains of the Italy–Slovenia cross-border area.
When we think of hops, beer is almost inevitably the first thing that comes to mind. Yet this plant, cultivated for centuries across the Alpine and pre-Alpine landscapes of Friuli Venezia Giulia and Slovenia, is far more than a brewing ingredient. Its flowers, leaves, stems and the residues left over after processing contain a remarkable range of bioactive compounds, many of which remain largely unexplored at an industrial level. Today, thanks to advances in biotechnology, these by-products are attracting growing interest as a potential source of value for supply chains well beyond the brewing industry.
The Italy–Slovenia cross-border territory is one of the European areas with the deepest roots in hop cultivation. In Slovenia — particularly in the Savinja and Kamnik valleys — internationally recognised hops are produced; on the Italian side, cultivation extends across parts of Friuli and eastern Veneto. This geographic proximity is more than a cultural fact: it means locally available raw materials, established producer networks and a supply chain that can serve as a starting point for shared innovation.
But what exactly makes hops so interesting from a biochemical point of view? Among the most studied compounds is xanthohumol, a flavonoid found in hop cones — the plant's female flowers — with antioxidant and anti-inflammatory properties well documented in scientific literature. Alongside it, bitter resins, essential oils and other polyphenols complete a biochemical profile that conventional brewing alone fails to fully exploit. Most of these compounds are found precisely in the fractions that are discarded or underused during processing.
This is where the perspective shifts. Hop processing residues — the solid remains left after aroma extraction during brewing — still contain significant quantities of bioactive substances. Several European companies have already begun working with them: hop extracts are being used in dietary supplements targeting sleep quality and stress management, drawing on the plant's well-known calming properties; other extracts are finding their way into cosmetics as soothing and antioxidant actives in creams and serums. In the food sector, the fibrous fraction of hop residues is being used in the formulation of enriched baked goods and functional ingredients for clean-label products — increasingly sought after by consumers who care about what goes on their labels.
These are not niche applications destined to remain marginal: the global functional ingredients market is growing steadily, and demand for locally sourced, traceable and sustainable raw materials is now one of the sector's main innovation drivers. For the small and medium-sized enterprises of the cross-border area, this translates into a concrete opportunity: those who grow or process hops can find new revenue streams in these residues, while companies active in natural cosmetics, dietary supplements or functional food can identify local hops as a differentiating ingredient — one with a recognisable territorial story worth communicating.
The challenge, as is often the case in agri-food innovation, is turning potential into practice: developing scalable extraction protocols, building collaborations between agricultural producers and research laboratories, and finding the right channels to bring these new ingredients to market. BioTech2Agri works precisely on this front, facilitating the connection between the research world and businesses across the cross-border area. In this sense, hops are not just an interesting raw material — they are a concrete example of how the agricultural traditions of this territory can become the starting point for sustainable, grounded innovation
