Australian scientists have found that the peel, seeds, and leaves of persimmons contain active compounds capable of reducing inflammation and oxidative stress.
The researchers reached their conclusion after conducting a comprehensive review of scientific studies published on the fruit between 2000 and 2025. Their analysis of twenty-five years of research was published in the peer-reviewed scientific journal Nutrients.
According to the review, parts of the persimmon plant that are typically discarded during food production are rich in beneficial compounds. These include phenolic acids, flavonoids, carotenoids, tannins, and dietary fiber, all of which exhibit notable biological activity.
Persimmons are sweet, bright orange autumn fruits produced by trees of the genus Diospyros, which are widely grown in warm temperate and subtropical regions. While the soft flesh is commonly eaten fresh or dried, industrial processing frequently generates substantial volumes of discarded skin, seeds, and leaves.
Lab tests highlight antioxidants
In laboratory experiments, the antioxidant and anti-inflammatory properties of these plant parts were demonstrated most convincingly. The identified substances helped neutralize reactive oxygen species, which cause cellular damage when present in excess, while suppressing biological processes linked to chronic inflammation.
Reactive oxygen species are unstable molecules containing oxygen that form naturally during cellular metabolism. When an excessive amount of these molecules builds up in body tissues, it creates oxidative stress, a state known to damage cellular proteins, lipids, and DNA over time.
Flavonoids and phenolic acids are naturally occurring plant metabolites recognized for their ability to neutralize free radicals, while tannins contribute to the characteristic astringency found in unripe fruits.
Beyond test-tube trials, experiments conducted on isolated cells and animal models indicated that persimmon components possess clear antidiabetic properties. The substances directly affected physiological processes responsible for regulating glucose levels and sugar metabolism.
The review noted that cell and animal studies also revealed hypolipidemic effects, demonstrating that persimmon extracts can lower elevated blood lipid levels and improve overall fat metabolism. In addition, specific substances isolated from the fruit displayed antimicrobial activity, inhibiting the growth of certain bacteria and other microorganisms.
Commercial uses and future applications
Functional foods are dietary products formulated to deliver specific health benefits beyond basic nutrition by incorporating active plant extracts or bioactive ingredients. Dietary supplements fulfill a similar role, supplying concentrated phytochemicals in convenient forms such as capsules, powders, or liquids.
Nutrients is an international open-access scientific publication that focuses on human nutrition, dietary health, and biochemical research.
Based on this combination of protective properties, the study authors concluded that persimmon peel, seeds, and other processing byproducts could be repurposed for use in manufacturing functional foods and dietary supplements.
The findings follow earlier nutritional research showing that the baru fruit, a native Brazilian nut-bearing pod, offers similar health benefits by supporting heart function, gut health, and metabolic regulation.
