Herbs (Global Traditional) · Southeast Asian
Lempuyang (Zingiber zerumbet) (Zingiber zerumbet)
Moderate Evidencebotanical3 PubMed Studies
Hermetica Superfood Encyclopedia
Lempuyang (Zingiber zerumbet) is a medicinal ginger containing zerumbone as its primary bioactive compound. The essential oil demonstrates antibacterial activity against foodborne pathogens and has been traditionally used for digestive disorders in Indonesian Jamu medicine.
Lempuyang is the rhizome of Zingiber zerumbet, a perennial herb in the ginger family native to Southeast Asia, particularly Indonesia, Malaysia, and Brunei. The rhizomes are harvested fresh or dried, with essential oils extracted via hydrodistillation containing up to 28.4% zerumbone, the primary bioactive sesquiterpene compound.
Currently, no human clinical trials, RCTs, or meta-analyses exist for Zingiber zerumbet. Available evidence is limited to in vitro antibacterial studies using disc diffusion methods, with no PubMed-indexed human studies found.
No clinically studied dosage ranges exist for human use. In vitro studies used 100 mg/mL concentrations for crude extracts and undiluted essential oil. Consult a healthcare provider before starting any new supplement.
Zingiber zerumbet rhizome is not typically consumed as a caloric food source, so macronutrient data (protein, fat, carbohydrate) per serving is limited in formal databases. The primary value lies in its bioactive phytochemical composition: • **Zerumbone** – The dominant sesquiterpene compound in the essential oil, typically comprising 37–73% of rhizome essential oil content (concentration varies with maturity and geographic origin; reported range ~12–42 mg/g dry rhizome). Zerumbone is the most pharmacologically studied compound and is responsible for much of the plant's anti-inflammatory and antimicrobial activity. Bioavailability is low orally due to poor water solubility and rapid metabolism; lipid-based delivery systems improve absorption. • **Other sesquiterpenes** – α-humulene (5–15% of essential oil), camphene, borneol, linalool, and α-caryophyllene are present in smaller quantities. • **Essential oil yield** – Typically 1.0–3.5% (v/w) from fresh rhizome via hydrodistillation. • **Phenolic compounds** – Total phenolic content reported at approximately 18–45 mg gallic acid equivalents (GAE)/g dry extract (methanol extraction). Includes kaempferol, quercetin, and their glycosides in trace to moderate amounts. • **Flavonoids** – Total flavonoid content approximately 8–22 mg quercetin equivalents/g dry extract. • **Minerals** – Limited data available; rhizomes of Zingiber species generally contain potassium (200–350 mg/100g fresh weight), calcium (15–30 mg/100g), magnesium (25–45 mg/100g), iron (1–3 mg/100g), and zinc (0.5–1.5 mg/100g). These figures are extrapolated from closely related Zingiber species and should be treated as approximations. • **Dietary fiber** – Rhizome contains moderate crude fiber (~3–6 g/100g fresh weight), consistent with other Zingiber rhizomes. • **Vitamins** – No specific vitamin quantification studies published for Z. zerumbet; related ginger species contain modest vitamin C (3–5 mg/100g fresh rhizome) and trace B-vitamins. • **Starch and carbohydrates** – Fresh rhizome contains approximately 12–18 g carbohydrate/100g, predominantly starch, with moisture content around 80–87%. • **Protein** – Low, approximately 1–2 g/100g fresh rhizome. • **Lipids** – Low total fat (~0.5–1.5 g/100g fresh), but the essential oil fraction is highly concentrated in terpenoids. • **Antioxidant capacity** – DPPH radical scavenging IC50 values for methanol extracts reported at approximately 40–120 µg/mL (moderate antioxidant activity, lower than curcumin but comparable to standard ginger). Note: Most quantitative data derives from laboratory analyses of dried rhizome extracts rather than standard food composition databases. Concentrations vary significantly with cultivar, harvest time, soil conditions, and extraction method. Bioavailability of zerumbone and other terpenoids is enhanced when consumed with dietary fats or in traditional preparations involving coconut milk or oil.
Lempuyang's primary bioactive compound zerumbone exhibits antimicrobial activity by disrupting bacterial cell membrane integrity and inhibiting bacterial enzyme systems. The essential oil components, including α-humulene and camphene, interfere with pathogenic bacteria growth through multiple cellular targets. Traditional digestive benefits may involve modulation of gastrointestinal motility and inflammatory pathways, though specific mechanisms require further research.
Current research on lempuyang is limited to preliminary laboratory studies rather than human clinical trials. In vitro disc diffusion studies demonstrated essential oil activity against Salmonella typhi with 20.66mm inhibition zones, indicating moderate antibacterial potency. Traditional use for digestive disorders including diarrhea and dysentery is documented in ethnobotanical literature, but lacks controlled clinical validation. The evidence base remains insufficient for definitive therapeutic claims, requiring properly designed human studies to confirm efficacy and safety.
Safety data for lempuyang supplementation is limited due to lack of clinical trials. As a member of the ginger family, it may share similar contraindications including potential interactions with anticoagulant medications and blood sugar-lowering drugs. Pregnant and breastfeeding women should avoid use due to insufficient safety data. High doses of essential oil may cause gastrointestinal irritation or allergic reactions in sensitive individuals.
