Hermetica Superfood Encyclopedia
The Short Answer
Jackalberry (Diospyros mespiliformis) contains naphthoquinones like naphthazarin and juglone that inhibit DMBA-TPA-induced tumor pathways and exhibit antimicrobial activity with MICs of 3.1-6.3 mg/mL against pathogenic fungi and bacteria. The fruit provides 24.56 mg vitamin C per 100g and demonstrates anti-inflammatory effects through methanol extracts at 50-100 mg/kg in rodent models.
CategoryFruit
GroupFruit
Evidence LevelStrong
Primary Keywordjackalberry benefits
Synergy Pairings4
Health Benefits
Supports digestive health via dietary fiber, enhancing bowel regularity and gut motility.
Exhibits antioxidant properties through tannins and flavonoids, helping to combat oxidative stress.
Possesses antimicrobial effects due to bioactive compounds, traditionally used to treat infections.
May reduce inflammation, providing systemic relief and supporting joint comfort
Promotes wound healing and soothes respiratory issues, as observed in traditional applications.
Origin & History
Jackalberry (Diospyros mespiliformis) is a resilient fruit tree native to sub-Saharan Africa, thriving across savannas and riparian forests in countries like Senegal, Kenya, and South Africa. It prefers deep alluvial soils but adapts to sandy regions. This fruit is valued for its nutrient density and bioactive compounds, offering significant functional benefits for digestive health, immune defense, and anti-inflammatory support.
“Revered across various African cultures, including Bantu, Zulu, and Tswana traditions, the Jackalberry tree has been a significant medicinal ally and cultural symbol for centuries. Its leaves, bark, and roots were traditionally used by healers for treating respiratory infections, dysentery, and external wounds. Often considered a sacred protective spirit tree, it is associated with fertility, longevity, and resilience.”Traditional Medicine
Scientific Research
Ethnobotanical and preliminary scientific studies document Jackalberry's antimicrobial, antioxidant, and anti-inflammatory properties, supporting its traditional uses in food and medicine. Research, including in vitro studies, indicates its potential role in treating infections, reducing inflammation, and promoting wound healing. Further clinical trials are needed to validate these effects in humans.
Preparation & Dosage
Common forms
Fresh fruit, dried fruit, flour, or herbal decoctions/infusions from leaves and bark.
Preparation
Consume ripe fruit fresh, dry for storage, or grind into flour for baking. Leaves and bark are prepared as decoctions.
Traditional use
Various tree parts used in folk medicine for fever, dysentery, pneumonia, and skin disorders.
Dosage
Consume fresh fruit or flour as part of a balanced diet; for dried leaf infusion, 2-4 grams as needed.
Nutritional Profile
- Dietary Fiber: Promotes digestive wellness and gut regularity.
- Vitamin C: Enhances immune function and supports skin integrity.
- Minerals: Calcium, iron, and magnesium, supporting bone health, blood production, and muscle function.
- Bioactive Compounds: Including tannins, flavonoids, saponins, and alkaloids, providing antioxidant, anti-inflammatory, and antimicrobial properties.
How It Works
Mechanism of Action
Naphthoquinones including naphthazarin and juglone inhibit DMBA-TPA-induced skin carcinogenesis pathways and demonstrate direct antimicrobial effects against Candida albicans and Mycobacterium tuberculosis. Polyphenolic compounds target AKT1 kinase signaling while boosting immunity through Treg cell inhibition and enhanced IL-12, IFN-γ, and nitric oxide production. Methanol stem bark extracts produce anti-inflammatory and analgesic effects through unspecified pathways in rodent models.
Clinical Evidence
No human clinical trials exist specifically for jackalberry, with evidence limited to pre-clinical animal and in vitro studies. Rodent studies show methanol stem bark extracts (50-100 mg/kg i.p.) produce significant anti-inflammatory and analgesic effects (p<0.05). In vitro antimicrobial testing demonstrates MICs of 3.1-6.3 mg/mL against pathogenic organisms including Candida albicans and Neisseria gonorrhoeae. Cytotoxicity studies using related Diospyros species show activity against Hep G2 and MCF-7 cancer cell lines, though human efficacy remains unvalidated.
Safety & Interactions
Acute toxicity studies reveal an LD50 of 513.809 ± 33.92 mg/kg i.p. in mice for methanol stem bark extracts, indicating moderate toxicity potential. The fruit contains concerning lead levels at 5.063 mg per 100g, which may pose heavy metal accumulation risks with excessive consumption. High copper content (30.30 mg per 100g) could be problematic for individuals with Wilson's disease or copper metabolism disorders. No documented drug interactions or contraindications exist, though pregnant and breastfeeding women should avoid use due to insufficient safety data.
Synergy Stack
Hermetica Formulation Heuristic
Polyphenol/antioxidant base
Immune & Inflammation | Gut & Microbiome
Also Known As
Diospyros mespiliformisAfrican medlarRiver ebonyBush butter tree
Frequently Asked Questions
What are the main bioactive compounds in jackalberry fruit?
Jackalberry contains naphthoquinones like naphthazarin and juglone, plus polyphenolic compounds and 24.56 mg vitamin C per 100g. The fruit also provides significant crude fat (19.08g) and carbohydrates (56.55g) per 100g serving.
How effective is jackalberry against infections?
In vitro studies show jackalberry leaf extracts have antimicrobial MICs of 3.1-6.3 mg/mL against Candida albicans, Gardnerella vaginalis, and Neisseria gonorrhoeae. Hexane extracts demonstrate anti-tuberculosis activity with MIC of 100 µg/mL against Mycobacterium tuberculosis, though human studies are lacking.
What is the nutritional content of jackalberry fruit?
Per 100g, jackalberry provides 6.01g protein, 19.08g fat, 56.55g carbohydrates, and 3.37g fiber. Key minerals include calcium (69.44mg), copper (30.30mg), magnesium (24mg), and iron (9.88mg), with 24.56mg vitamin C.
Are there any safety concerns with jackalberry consumption?
Jackalberry contains potentially concerning lead levels at 5.063 mg per 100g and very high copper content at 30.30 mg per 100g. The LD50 in mice is 513.809 mg/kg, indicating moderate toxicity, so excessive consumption should be avoided.
Has jackalberry been tested in human clinical trials?
No human clinical trials exist specifically for jackalberry (Diospyros mespiliformis). All current evidence comes from pre-clinical animal studies and in vitro laboratory testing, with no validated human efficacy or safety data available.
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