
Japanese historic sericulture infrastructure repurposed for kuwa-cha and supplement extract; FFC notifications support metabolic-health retail positioning.
Deoxynojirimycin (DNJ) 0.1-0.3% in dried leaf; chlorogenic acid 1-3%; rutin 0.5-2%; quercetin glycosides.
Kuwa-cha (mulberry-leaf tea), blood-sugar-support FFC supplements, Kampo-positioned wellness products.
Mulberry leaf (Morus alba) — a Kampo herbal raw material with FFC notifications referencing post-meal blood-sugar moderation, anchored in the leaf's deoxynojirimycin (DNJ) content. Japanese cultivation, historically tied to the silk industry, has been re-purposed for kuwa-cha (mulberry-leaf tea) and DNJ-standardised supplement extracts. Nagano (the historic silk region), Gunma, and Kumamoto produce commercial supply; small-volume specialty producers in mountainous Tōhoku also contribute. Distinct from the existing mushroom and bamboo-leaf functional entries.
| Jepang | FFC notifications exist (post-meal blood-sugar moderation); food product status |
|---|---|
| Uni Eropa | Novel Food consideration; CosIng comparable for cosmetic extract |
| Amerika Serikat | DSHEA NDI for supplements; GRAS by traditional use |
| Tiongkok | NMPA / TCM context; well-precedented import |