Traditional Japanese Black Vinegar Concentrate for Global Nutraceutical and Functional Food Brands
Over 200 Years of Japanese Tradition, Concentrated into a Powerful Bulk Ingredient
Kurozu Extract Powder is a highly concentrated, vacuum freeze dried powder derived from traditional Japanese brown rice black vinegar, produced exclusively in Fukuyama-cho, Kirishima City, Kagoshima Prefecture. Through a concentration process that amplifies its amino acid content to 8,080 mg per 100 g, nearly 12 times that of liquid black vinegar, it delivers a potent, shelf stable ingredient ready for direct formulation into capsules, tablets, sachets and functional foods.
Backed by human clinical trials and over two centuries of consumption history in Japan, Kurozu Extract Powder gives global brands a credible, traceable and scientifically supported ingredient with strong market positioning across metabolic health, stress management and active nutrition categories.
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Where Kurozu Extract Powder Works
A quiet introduction
12x Concentrated Amino Acid Density
Through vacuum freeze drying, total amino acids reach 8,080mg per 100g compared to 667mg in liquid black vinegar, delivering significantly higher functional value per gram for your formulation.
Traditional Tsubo-zukuri Production,
Over 2 Years Aged
Produced exclusively in Fukuyama cho, Kagoshima using 200 year old earthenware jar fermentation. No added salt, sugar or additives. A fully traceable, clean label ingredient from source to powder.
Clinically Tested on Human Subjects
Human clinical trials at 1,000mg per day over 8 weeks confirmed measurable results in visceral fat reduction, waist circumference, stress markers and blood health with no adverse effects reported.
Full product specifications including Appearance, Foreign Matter, Loss on Drying, Microbiological Tests, Storage Conditions, Shelf Life, Packaging Details.
Complete raw material documentation including ingredient composition, country of origin, manufacturing process, GMO status, allergen information and pesticide screening details.
Kurozu Extract Powder is derived from traditional brown rice black vinegar produced exclusively in Fukuyama-cho, Kagoshima Prefecture, Japan using a 200 year old earthenware jar fermentation method known as Tsubo zukuri. Unlike mass produced vinegars completed in weeks through forced tank fermentation, Kurozu is naturally fermented and aged for over two years, developing a rich amino acid profile, organic acids, vitamins and minerals that standard vinegars cannot replicate. Through vacuum freeze drying, this liquid gold is transformed into a stable, concentrated powder containing 8,080 mg of total amino acids per 100 g, nearly 12 times that of liquid black vinegar and approximately 60 times that of standard rice vinegar.
For global supplement and functional food brands, Kurozu Extract Powder offers a rare combination of traditional Japanese origin, clinical validation and formulation-ready convenience. It is non-GMO, allergen-free, contains no added salt or sugar and has been screened for 513 agricultural chemicals. With human clinical data supporting its efficacy at 1,000mg per day and a 200 year consumption history in Japan, it is one of the most credible and market-ready functional ingredients available for nutraceutical formulation today.
Metabolic and Weight Management Support
Human clinical trials at 1,000mg per day over 8 weeks demonstrated significant reductions in waist circumference, total body fat, and visceral fat, making it a credible ingredient for weight management and metabolic health formulations.
Stress and Mental Wellness Support
Clinical results showed measurable improvement in POMS scores, reducing tension, anxiety, depression, anger, and confusion, giving brands a scientifically supported ingredient for the fast-growing stress and mental wellness supplement category.
Blood Health and Circulation Support
Academic research indicates improvements in red blood cell deformability, blood flow velocity, and blood pressure regulation through ACE inhibitory activity, supporting formulations targeting cardiovascular and circulatory health.
What you can offer
Packaging Format
Carton box with double layered polyethylene inner bag
Net Weight
10kg per package
Shelf Life
2 years from date of manufacture, stored unopened in a cool, dark place
Frequently asked questions
Is Kurozu Extract Powder backed by clinical evidence for use in supplement formulations?
Yes. Human clinical trials at 1,000mg per day over 8 weeks confirmed measurable results in visceral fat reduction, waist circumference, stress markers, and blood health with no adverse effects reported, giving your brand a credible, science-backed ingredient story.
How does Kurozu Extract Powder differ from standard black vinegar or rice vinegar ingredients?
The concentration process elevates total amino acids to 8,080mg per 100g, nearly 12 times that of liquid black vinegar and approximately 60 times that of standard rice vinegar, making it significantly more potent and effective for functional formulations.
Is it clean label and free from additives?
Yes. Kurozu Extract Powder contains no added salt, sugar, or additives. It is non-GMO, allergen-free, and screened for 513 agricultural chemicals, making it fully compatible with clean label product requirements in regulated global markets.
What formats can this ingredient be formulated into?
It works directly in capsules, tablets, softgels, sachets, functional beverages, and fortified food products, giving your development team full flexibility across supplement and functional food categories.
What is the minimum order quantity and lead time?
Kurozu Extract Powder is supplied in 10kg carton units. Lead time is approximately 90 days from order confirmation. Contact us directly to discuss volume requirements and availability.
Can we verify the origin and traceability of the raw materials?
Yes. Brown rice is sourced from the Kyushu region, primarily Kagoshima Prefecture, and full raw material documentation including ingredient composition, manufacturing process, GMO status, and pesticide screening is available upon request.