
Naruto Strait's tidal currents produce wakame with firmness and color no other origin matches; designated regional brand under Tokushima.
Iodine 100-300 mg/100g dry; alginate 25-35%; fucoxanthin 0.05-0.15%.
Premium retail wakame for export, miso-soup blend, fucoxanthin-positioned supplements.
Premium-grade wakame (Undaria pinnatifida) harvested in the Naruto Strait (between Tokushima and Awaji Island). The strong tidal currents in this strait produce wakame with thicker, firmer texture and brighter green color than other origins. Naruto Wakame is a designated regional brand under Tokushima's branding programme. The premium texture commands 2-3× the price of mainstream wakame in retail. Distinct from existing 'fucoidan' (which is the active component) and 'okinawa-mozuku-fucoidan'. Used in soup, salad, and as a feedstock for fucoxanthin / mineral-rich supplement extracts.
| Jepang | Food product; iodine-content disclosure under Japan food labelling rules |
|---|---|
| Uni Eropa | Food import; iodine cap monitoring (EU recommends ≤600 µg/day) |
| Amerika Serikat | GRAS for food; FDA Prior Notice required |
| Tiongkok | GACC food facility registration; verify iodine compliance |
Riken Vitamin Co., Ltd.
理研ビタミン株式会社
Listed Japanese ingredient and seasoning company with a 75+ year history in seaweed extracts, kombu-derived dashi, fat-soluble vitamins, and emulsifiers. Operates as a primary B2B supplier for Japanese food manufacturers and increasingly serves overseas premium-dashi and functional-food customers. Multiple production sites across Japan plus subsidiaries in the US and Europe.
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Kubara Honke / Kayanoya
久原本家 / 茅乃舎
Family-owned Fukuoka producer founded 1893, expanded through the Kayanoya brand from 2005. Produces premium dashi packs, mentsuyu, soy-sauce blends, and Japanese broth bases sold through directly-operated retail in Japan, New York, and Paris. Focus on additive-free, MSG-free formulations using Japan-origin katsuobushi, kombu, and shiitake. Increasingly active in B2B premium dashi supply for export-focused Japanese restaurants and natural-food retail.
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