Japanese Green Plum Powder

300mg

Japanese green plum (Prunus mume) - the same fruit behind umeboshi. Naturally rich in citric and malic acid plus mume-specific polyphenols. Added in v4.1 specifically to balance the ginger note and add a refreshing plum-citrus character without artificial flavouring.

Category Greens
Dose 300mg
Form Prunus mume - freeze-dried fruit powder, natural flavour preserved
Evidence Level Emerging - traditional Japanese ingredient with growing clinical literature

Mechanism

Prunus mume (Japanese ume, also known as the Japanese apricot or green plum) is the source of Japan's culinary umeboshi tradition. The fruit is unusually rich in organic acids - citric acid, malic acid, and succinic acid - giving it a distinctive sharp tartness. It also contains a class of polyphenols called mumefural, lignan glycosides, and chlorogenic acid derivatives that have been studied in vitro for antioxidant activity.

In the KōJō formula, ume powder is included primarily for sensory contribution - the natural acidity and aromatic compounds balance ginger's pungency and add a refreshing finish. The v4.1 formulation (March 2026) added ume specifically to address palatability concerns from v4.0 testing where ginger dominated the flavour profile.

Key Benefits

  • Traditional Japanese fruit - umeboshi heritage
  • Naturally rich in citric, malic, and succinic acid - clean tartness
  • Mumefural and chlorogenic acid polyphenols - in vitro antioxidant activity
  • Pesticide screened, non-GMO
  • No artificial flavouring required - the fruit does the work

The Research

Peer-reviewed human trials supporting this ingredient at this dose.

Bailly C. (2020). Pharmacol Res. 159:104879.Anticancer properties of Prunus mume extracts (Chinese plum, Japanese apricot).PubMed →
Choi HJ, et al. (2007). Biol Pharm Bull. 30(8):1487-90.Antioxidative activities of fractions of Prunus mume extracts.PubMed →
In the formula

Japanese Green Plum Powder

300mg

Prunus mume - freeze-dried fruit powder, natural flavour preserved

When to take it

Daily, any time. Included for its distinctive plum-citrus aroma and tartness - balances the ginger sharpness in the morning ritual.