The road for red raspberry seeds valorization: A comprehensive review on the chemical composition, extraction techniques, bioactivity and applications

Tiny raspberry seeds are packed with valuable oils and antioxidants—yet most are thrown away, creating a growing environmental problem. What if we could turn this waste into a treasure trove of nutrition and sustainable products?

Raspberry seeds, often discarded as waste, are actually a hidden gem. They contain polysaccharides, triacylglycerides, and polyphenols, but scientists still lack a detailed map of their full chemical makeup. Most research has focused on the prized raspberry seed oil, leaving the defatted seeds with no use—and a growing environmental and economic burden.

A new comprehensive review digs deep into what we know and what we don't. It reveals that raspberry variety, harvest conditions, and inconsistent analysis methods have clouded our understanding. However, green extraction techniques are stepping up, showing good efficiency and sustainability compared to conventional methods—though scaling them up for industry remains a challenge.

The bioactivities of raspberry seeds are promising, but most studies are still in the lab, and the link between structure and function is often missing. Currently, commercial use is limited to cosmetics, but the potential for food fortification—boosting nutrition and stabilizing oils—is huge. The review calls for more research to unlock the full potential of these tiny seeds, turning waste into value.

Key Points

• Raspberry seeds are rich in polysaccharides, triacylglycerides, and polyphenols.
• Green extraction methods show promise but need industrial scale-up.
• Current commercial use limited to cosmetics; food fortification potential untapped.