Studies

  • Japanese black vinegar Kurozu promotes lifespan

    Journal of Pharmacological Sciences (2025)

    A study published in the Journal of Pharmacological Sciences
    reported that traditional Japanese black vinegar (Kurozu)
    extended lifespan in C. elegans.

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  • Japanese black vinegar beverage intake may help reduce exercise-induced fatigue

    Journal of Physical Fitness and Sports Medicine (2020)

    A randomized, double-blind placebo-controlled trial found that consuming a black vinegar beverage for 7 days significantly reduced subjective fatigue after exercise and improved recovery in healthy adults.

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  • Japanese black vinegar and Okinawa moromi vinegar supplementation and vascular health and fatigue

    Shinryo to Shinyaku (2015)

    A clinical study reported that intake of Japanese black vinegar and Okinawa moromisu-containing supplement capsules for 8 weeks significantly reduced blood pressure and increased capillary blood flow in adults with mild hypertension.

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  • Japanese black vinegar (Kurozu) fermentation components and immune system activation

    Journal of Bioscience and Bioengineering (2013)

    Researchers identified immunostimulatory components in traditional Japanese black vinegar (kurozu) that activated immune signaling pathways in laboratory experiments.

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  • Kurozu intake induces heat shock protein (HSP70) expression

    Journal of Nutritional Science and Vitaminology (2020)

    Oral administration of concentrated brewed rice vinegar (Kurozu) increased HSP70 expression in multiple tissues in mice, suggesting a role in cellular stress protection.

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  • Japanese black vinegar (Kurozu) supplementation and body fat and energy metabolism

    Japanese Journal of Complementary and Alternative Medicine (2014)

    A clinical study investigated the effects of a dietary supplement containing kurozu concentrate on body fat and metabolic parameters in adults.

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  • Black vinegar supplementation and metabolic health

    Journal of the Science of Food and Agriculture (2020)

    A laboratory study reported that black vinegar supplementation reduced body weight gain and improved metabolic parameters in an animal model of obesity.

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  • Japanese black vinegar (Kurozu) and oxidative stress

    Bioscience, Biotechnology, and Biochemistry (2000)

    A study reported that an extract of traditional Japanese black vinegar (kurozu) showed strong antioxidant activity and significantly suppressed lipid peroxidation and oxidative stress markers in laboratory assays and mouse skin models.

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  • Japanese black vinegar (Kurozu) and lipid metabolism

    Journal of the Japanese Society for Food Science and Technology (2010)

    A study reported that dietary intake of kurozu suppressed lipid accumulation and improved lipid metabolism in an experimental model, suggesting potential effects on fat metabolism.

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  • Kurozu melanoidin and adipogenesis

    Food Chemistry (2015)

    A study reported that a compound derived from traditional Japanese black vinegar (kurozu melanoidin) significantly suppressed adipogenesis in preadipocyte cells, suggesting a potential role in fat metabolism.

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  • Japanese black vinegar and allergic response

    Cytotechnology (2018)

    A study reported that traditional Japanese black vinegar suppressed IgE-mediated allergic responses by inhibiting mast cell degranulation in vitro and reducing allergic symptoms in a mouse model.

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  • Kurozu concentrated liquid and adipocyte size

    Lipids in Health and Disease (2010)

    A study reported that oral administration of kurozu concentrated liquid significantly reduced adipocyte size and inhibited fat accumulation by suppressing dietary fat absorption and adipogenic gene expression.

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  • Kurozu and colitis (intestinal inflammation)

    Digestive Diseases and Sciences (2010)

    A study reported that traditional Japanese black vinegar (kurozu) significantly reduced inflammation and symptoms in a mouse model of colitis. Kurozu suppressed body weight loss, reduced bloody stool frequency, and decreased oxidative stress markers in colon tissue.

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  • Kurozu fractions and colitis

    Turkish Journal of Gastroenterology (2011)

    A study reported that specific molecular fractions of kurozu significantly improved colitis symptoms in a mouse model, with reductions in inflammation and oxidative stress markers.

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  • Okinawa vinegar (Moromisu) and stress-related fatigue

    Functional Foods in Health and Disease (2015)

    A study reported that a beverage containing Okinawa vinegar (Moromisu) and beta-1,3/1,6 glucan improved stress-related fatigue and mood state in healthy subjects.

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