Hermetica Superfood Encyclopedia
The Short Answer
Psidium cattleianum leaves and essential oils contain gallic acid, ellagic acid, quercetin derivatives, β-caryophyllene, and α-bisabolol that inhibit COX-2, 5-lipoxygenase, collagenase, and elastase through direct enzyme binding and copper chelation at active sites. In vitro assays demonstrate 90.37% collagenase inhibition and a leaf essential oil 5-lipoxygenase IC50 of 2.38 μL/mL, supporting its traditional application in gastrointestinal inflammation such as gastritis, though no human clinical trials have confirmed these effects.
CategoryHerb
GroupAfrican
Evidence LevelPreliminary
Primary KeywordBupubili Psidium cattleianum benefits
Bupubili — botanical close-up
Health Benefits
**Gastric Anti-Inflammatory Action**
Leaf extracts rich in ellagic acid and gallic acid suppress pro-inflammatory enzyme cascades including COX-2 (flower EO IC50 2.575 μL/mL) and 5-lipoxygenase (leaf EO IC50 2.38 μL/mL), providing a plausible molecular basis for the traditional Mampa use of Bupubili in gastritis management.
**Antioxidant Protection**
Leaf dry extracts exhibit exceptionally high ABTS radical scavenging capacity at 535.62 ± 2.18 mg Trolox equivalents/g DE and DPPH activity of 0.54 ± 0.07 mg TE/g DE, indicating robust free-radical neutralization relevant to oxidative stress-driven gastric mucosal damage.
**Extracellular Matrix Preservation**
Standardized leaf extracts inhibit collagenase by 90.37 ± 0.08% and elastase by 58.13 ± 1.08%, comparable to the reference compound EGCG, suggesting potential utility in protecting connective tissue integrity in inflamed mucosal or dermal environments.
**Tyrosinase Inhibition and Skin Health**
Phenolic constituents, particularly gallic acid and quercetin glycosides, inhibit tyrosinase by 61.09 ± 1.17% via copper chelation at the enzyme's active site, indicating potential application in hyperpigmentation and melanogenesis-related skin conditions.
**Potential Anticancer Activity**
Leaf essential oils induce cytotoxicity in MCF-7 human breast cancer cells with an IC50 of approximately 5.32 μg/mL, mediated through modulation of the p53/Bax/Bcl-2 apoptotic pathway, though this evidence is strictly preclinical and in vitro.
**Nutritional Carotenoid and Anthocyanin Delivery**
Red strawberry guava fruits supply β-cryptoxanthin (44.8% of total carotenoids), cyanidin 3-glycoside as the dominant anthocyanin, fructose up to 22.83 g/100 g DM, and citric acid up to 135.35 mg/g DM, contributing antioxidant micronutrients relevant to mucosal health.
**Anti-Infective and Antimicrobial Potential**
The sesquiterpene-rich essential oils, dominated by β-caryophyllene (up to 14.99%) and α-humulene (7.02%), exhibit bioactivities consistent with antimicrobial and anti-biofilm properties described for these compound classes, though pathogen-specific MIC data for Bupubili remain unpublished.
Origin & History
Natural habitat
Psidium cattleianum, commonly called strawberry guava, is native to eastern Brazil but has naturalized across tropical and subtropical Africa, including regions of Mozambique and Madagascar where it is locally known as Bupubili. It thrives in humid lowland forests and disturbed secondary vegetation, tolerating a range of soil types, which contributes to its invasive spread across African island ecosystems. Traditional cultivation is minimal; the plant largely grows wild and is harvested opportunistically from naturalized stands for food and medicinal use.
“In Mampa traditional medicine, Bupubili (Psidium cattleianum) is used as a remedy for gastritis, representing one of the few documented ethnomedicinal applications of this species on the African continent, where the plant arrived as an introduced species from its native Brazil. The Mampa people's use of leaf preparations for gastrointestinal complaints aligns with broader African ethnobotanical traditions of employing astringent, tannin-rich plant decoctions for digestive inflammation, ulceration, and diarrhea. In its native Brazil, closely related Psidium species have a long history of use in folk medicine for dysentery, diarrhea, and wounds, and it is plausible that traditional knowledge of the genus was transmitted or independently rediscovered following the plant's naturalization in Africa. Formal ethnobotanical documentation of Bupubili's preparation methods, dosage, and contraindications as practiced by the Mampa remains sparse in peer-reviewed literature, representing a significant research gap.”Traditional Medicine
Scientific Research
All available evidence for Psidium cattleianum is limited to in vitro biochemical assays, cell-line cytotoxicity studies, and phytochemical characterization studies; no human clinical trials, randomized controlled trials, or animal intervention studies have been published specifically for the Bupubili application in gastritis. Enzyme inhibition studies (tyrosinase, collagenase, elastase, COX-2, 5-LOX) employed standardized spectrophotometric assays with quantified IC50 and percent inhibition values, representing internally consistent but non-translatable preclinical data. Phytochemical studies using LC-MS, GC-MS, supercritical fluid extraction, and hydrodistillation have robustly characterized the phenolic and volatile profiles of leaves, fruits, and flowers across multiple independent research groups, strengthening confidence in the compound inventory. The overall evidence base is best characterized as preliminary-to-preclinical, with an absence of pharmacokinetic, bioavailability, or dose-response data in living systems, substantially limiting clinical inference.
Preparation & Dosage
Traditional preparation
**Dry Leaf Extract (Research Form)**
38 mg GAE/g DE; no human dose established
Used in vitro at concentrations yielding TPC of 449.. Traditional preparation likely involves aqueous decoction of dried leaves.
**Aqueous Leaf Decoction (Traditional)**
Leaves are boiled in water and the resulting tea consumed orally for gastritis in Mampa traditional medicine; no standardized volume, frequency, or duration has been documented in the scientific literature.
**Leaf Essential Oil (Experimental)**
Obtained by hydrodistillation or supercritical CO2 extraction (yield up to 0.62%); used in cell-based assays at IC50 values of 2.38–5.32 μg/mL or μL/mL. No human-applicable dose has been established.
**Flower Essential Oil (Experimental)**
Obtained by hydrodistillation (yield up to 1.4%); COX-2 inhibition IC50 of 2.575 μL/mL in vitro. Not formulated for human supplementation.
**Fruit Pulp Beverage**
150–184 mg GAE/100 mL; consumed as food without therapeutic dosing specifications
Fruit-based beverages contain TPC of .
**Standardization Note**
No commercial standardized extract exists; no pharmacopoeial monograph or regulatory-approved dosage form has been established for Bupubili or Psidium cattleianum.
Nutritional Profile
Red Psidium cattleianum fruits contain fructose up to 22.83 g/100 g dry matter (DM) and glucose up to 16.42 g/100 g DM as primary carbohydrates, with citric acid as the dominant organic acid at up to 135.35 mg/g DM. Carotenoid content is notable, with β-cryptoxanthin comprising 44.8% of total carotenoids, and cyanidin 3-glycoside serving as the principal anthocyanin pigment; concentrations vary with ripening stage and geographic growing location. Leaf dry extracts are exceptionally rich in total phenolics (449.38 mg GAE/g DE), phenolic acids (21.04 mg CAE/g DE), and flavonoids (1.51 mg QE/g DE), with gallic acid (m/z 169) and ellagic acid as the dominant identified compounds by LC-MS. Bioavailability of these polyphenols has not been studied for this species specifically; general polyphenol absorption factors such as food matrix interactions, gut microbiome biotransformation of ellagitannins to urolithins, and first-pass metabolism would be expected to modulate systemic availability.
How It Works
Mechanism of Action
Gallic acid and ellagic acid within leaf extracts chelate copper ions at the binuclear active site of tyrosinase, competitively blocking substrate oxidation and reducing melanin synthesis by 61.09% in vitro. β-Caryophyllene and α-bisabolol in leaf essential oils non-competitively inhibit 5-lipoxygenase (IC50 2.38 μL/mL) and COX-2 (IC50 2.575 μL/mL), attenuating leukotriene and prostaglandin biosynthesis central to the inflammatory cascade implicated in gastric mucosal injury. Quercetin derivatives and ellagitannins inhibit collagenase (90.37%) and elastase (58.13%) likely through direct binding to the enzyme's zinc-containing catalytic domain, preserving extracellular matrix integrity in inflamed tissues. Leaf EOs trigger intrinsic apoptosis in MCF-7 cells via upregulation of p53 and pro-apoptotic Bax with concurrent downregulation of anti-apoptotic Bcl-2, inducing mitochondrial membrane depolarization and caspase activation at an IC50 of approximately 5.32 μg/mL.
Clinical Evidence
No human clinical trials investigating Psidium cattleianum or Bupubili for any health outcome, including gastritis, have been identified in the published literature. Available data derive exclusively from in vitro enzyme inhibition assays, MCF-7 breast cancer cell line experiments, and antioxidant capacity measurements, none of which constitute clinical evidence for efficacy or safety in humans. Effect sizes from in vitro studies (e.g., 90.37% collagenase inhibition, 5-LOX IC50 2.38 μL/mL) are pharmacologically interesting but cannot be extrapolated to therapeutic doses or outcomes without bioavailability and pharmacokinetic bridging studies. Confidence in clinical benefit is therefore very low; the traditional use in gastritis among the Mampa people represents the primary real-world use signal and warrants formal ethnopharmacological investigation and subsequent clinical evaluation.
Safety & Interactions
No formal human safety studies, toxicology trials, or adverse event reports have been published for Psidium cattleianum consumed as a therapeutic extract or Bupubili preparation; in vitro data reveal no overt cytotoxicity to normal cell lines at the concentrations tested, but this does not constitute a safety clearance for human use. The high tannin and ellagitannin content in leaf extracts raises theoretical concerns regarding gastrointestinal irritation, reduced mineral absorption (particularly iron and zinc via chelation), and potential hepatotoxic effects at high doses, consistent with risks associated with high-tannin plant extracts as a class. No drug-drug interactions have been empirically studied; however, the demonstrated COX-2 and 5-LOX inhibitory activity suggests a theoretical pharmacodynamic interaction with NSAIDs or corticosteroids that could potentiate anti-inflammatory or anticoagulant effects. Guidance for pregnant or lactating individuals cannot be provided in the absence of any reproductive toxicology data, and use during these periods should be avoided until safety is established.
Synergy Stack
Hermetica Formulation Heuristic
Also Known As
Psidium cattleianum SabineStrawberry guavaCattley guavaAraçáBupubiliCherry guava
Frequently Asked Questions
What is Bupubili used for in traditional medicine?
Bupubili is the local name for Psidium cattleianum used by the Mampa people primarily as a remedy for gastritis. Leaf preparations, likely aqueous decoctions, are the traditional form, consistent with the documented anti-inflammatory enzyme-inhibiting properties of the plant's phenolic compounds such as ellagic acid and gallic acid.
What are the key active compounds in Psidium cattleianum leaves?
The leaves contain exceptionally high total phenolics (449.38 mg GAE/g dry extract) dominated by gallic acid, ellagic acid, and quercetin glycosides, as identified by LC-MS. Essential oils extracted from leaves are rich in sesquiterpenes including β-caryophyllene (up to 14.99%), α-humulene (7.02%), and α-bisabolol (7.65%), which are responsible for the COX-2 and 5-lipoxygenase inhibitory activity.
Is there clinical trial evidence for Psidium cattleianum's health benefits?
No human clinical trials have been published for Psidium cattleianum or Bupubili for any health condition, including gastritis. All available evidence is confined to in vitro enzyme inhibition assays and cell-line studies, making it impossible to confirm efficacy or establish safe therapeutic doses in humans at this time.
Is Bupubili (strawberry guava) safe to consume?
The fruit of Psidium cattleianum is consumed as food without reported toxicity, but therapeutic leaf extracts and essential oils have not been evaluated in human safety studies. The high tannin content theoretically poses risks of gastrointestinal irritation and reduced mineral absorption at medicinal doses, and no maximum safe dose has been established for any preparation.
How does Psidium cattleianum inhibit inflammation at the molecular level?
Leaf essential oils containing β-caryophyllene and α-bisabolol inhibit 5-lipoxygenase (IC50 2.38 μL/mL) and COX-2 (flower EO IC50 2.575 μL/mL), blocking leukotriene and prostaglandin synthesis respectively. Additionally, ellagitannins and gallic acid in the leaf extract suppress matrix metalloproteinases, with 90.37% collagenase inhibition and 58.13% elastase inhibition, reducing tissue degradation in inflamed mucosa.
What is the difference between Psidium cattleianum leaf extract and flower essential oil for gastric health?
Both forms target inflammation but through different potencies: leaf essential oil inhibits 5-lipoxygenase with an IC50 of 2.38 μL/mL, while flower essential oil suppresses COX-2 with an IC50 of 2.575 μL/mL. Leaf extracts are traditionally preferred for gastritis management due to their higher concentration of ellagic acid and gallic acid, which work synergistically to suppress pro-inflammatory enzyme cascades. Flower essential oil may offer complementary benefits but is less established in traditional Mampa gastric protocols.
How should Bupubili dosage be adjusted for gastric inflammation versus general antioxidant support?
Dosing varies by intended use and extract concentration: higher doses of standardized leaf extracts (targeting ellagic and gallic acid content) are typically needed for acute gastric inflammation management, while lower maintenance doses support general antioxidant protection. Most traditional preparations use leaf decoctions or concentrated extracts, though specific clinical dosing protocols remain limited in peer-reviewed literature. Consultation with a practitioner familiar with Psidium cattleianum use is recommended to tailor dosage to individual gastric conditions.
Are there population groups who should avoid Bupubili supplements due to its potent anti-inflammatory compounds?
Individuals taking anticoagulant or antiplatelet medications should exercise caution, as the high polyphenol content (ellagic and gallic acids) may have mild blood-thinning properties. Pregnant and nursing women lack sufficient safety data specific to concentrated Bupubili extracts, though whole fruit consumption has a long traditional history. People with severe gastric ulcers should consult healthcare providers before using concentrated leaf extracts, as their potent enzyme inhibition may require medical supervision.
Explore the Full Encyclopedia
7,400+ ingredients researched, verified, and formulated for optimal synergy.
Browse IngredientsThese statements have not been evaluated by the Food and Drug Administration. This content is for informational purposes only and is not intended to diagnose, treat, cure, or prevent any disease.
hermetica-encyclopedia-canary-zzqv9k4w bupubili-psidium-cattleianum curated by Hermetica Superfoods at ingredients.hermeticasuperfoods.com and licensed CC BY-NC-SA 4.0 (non-commercial share-alike, attribution required)
