Voacanga africana
What's the taxonomical classification of Voacanga africana?
Voacanga africana belongs to the kingdom Plantae and is classified within the phylum Streptophyta. As a member of the class Equisetopsida and the subclass Magnoliidae, it follows the biological lineage of the order Gentianales. This plant is further categorized under the family Apocynaceae, which places it within the genus Voacanga. Ultimately, its specific identification is defined by its species name, africana.
| Taxonomic Rank | Classification |
|---|---|
| Kingdom | Plantae |
| Phylum | Streptophyta |
| Class | Equisetopsida |
| Subclass | Magnoliidae |
| Order | Gentianales |
| Family | Apocynaceae |
| Genus | Voacanga |
| Species | africana |
What are the morphological characteristics of this plant?
Voacanga africana has an evergreen tree structure characterized by oppositely arranged, elliptical leaves that measure between 5 and 15 centimeters in length with entire margins. The foliage typically exhibits a glossy texture on the upper surface and a paler green color on the underside. Small, inconspicuous flowers emerge in axillary clusters, possessing a yellowish-green hue. These blossoms eventually develop into fleshy, drupe-like fruits that transition from green to a dark red or black color when mature. The bark of the tree is generally smooth, though it may develop slight textures as the specimen reaches maturity.
What is the geographical distribution of this plant?
This plant is native to the tropical rainforest regions of West and Central Africa, specifically spanning from Guinea and Sierra Leone through to Gabon and the Democratic Republic of the Congo. It thrives primarily within the humid lowland forests where consistent rainfall and high temperatures are present. The species is commonly found in the understory of dense evergreen forests and occasionally in secondary growth areas. Its distribution is closely tied to specific soil moisture levels and the canopy structure of the Guineo-Congolian forest block. This localized range makes the plant a characteristic component of the African equatorial biome.
How is this plant cultivated?
This plant requires a tropical or subtropical environment with well-draining soil and consistent moisture to support its growth.
It thrives in shaded or semi-shaded areas that mimic the understory of a forest canopy. Regular fertilization during the growing season helps promote vigorous foliage development and healthy root systems. Because it is an evergreen species, it needs protection from extreme frost to prevent leaf damage.
Proper spacing during planting is essential to allow for its natural spread and canopy expansion.
What parts of this plant are used medicinally?
This plant Voacanaga africana provides medicinal value through the use of its bark and seeds. The bark is frequently harvested to treat various ailments, including skin infections and inflammatory conditions. Additionally, the seeds are utilized in traditional medicine to address specific internal health concerns. These different components are prepared in various ways to extract their therapeutic properties. Local healers rely on these specific parts to manage diverse symptoms within their communities.
According to a study published by "Natural product letters", the bark of Voacanga africana is used to obtain related alkaloids. An optimized and simplified extraction method was successfully applied to these alkaloids from the bark. During this process, the alkaloids were converted to their hydrochlorides and purified. The procedure also allowed for the recovery of the minor alkaloids.
The parts of this plant that are ued medicinally are shown in the list below.
- bark
- seeds
What traditional systems uses this plant?
This plant Voacancona africana is traditionally utilized by various ethnic groups in West and Central Africa to treat ailments such as stomach aches, fever, and skin infections.
The roots and bark are frequently decocted into medicinal teas or applied topically to soothe inflammation and promote wound healing. In many local communities, specific parts of the plant are also integrated into ritualistic practices to ward off spiritual maladies. These historical uses highlight the species' importance in ethnomedicine for managing both physical and metaphysical health.
Knowledge regarding its preparation is often passed down through generations of traditional healers.
What are the pharmacological activities of Voacanga africana?
This plant has anti-diabetic, anti-ulcer, antiamoebic, antibacterial, and antimicrobial pharmacological activities. Researchers have identified these diverse therapeutic properties through various phytochemical studies and biological assays. The anti-diabetic potential suggests its usefulness in managing blood glucose levels, while its anti-ulcer effects target gastrointestinal health. Furthermore, its potent antiamoebic and antibacterial actions help combat specific parasitic and bacterial infections. These antimicrobial qualities make the plant a significant subject for developing new natural medicinal treatments.
According to a study published by "Molecules (Basel, Switzerland)", Voacanga africana was identified as a new source rich in compounds with a potential anti-diabetic activity. This plant is among the sources for compounds that were screened in silico against 17 known anti-diabetic drug targets. The study identified 430 compounds as potential inhibitors from 184 plants. Within these findings, 6 specific compounds from the study were identified as novel potential multi-targeted anti-diabetic compounds with favorable ADMET properties. These include crotofoline A, erythraline, henningsiine, nauclefidine, vinburnine, and voaphylline.
The primary pharmacological activities of this plant are shown in the list below.
- anti-diabetic
- anti-ulcer
- antiamoebic
- antibacterial
- antimicrobial
What medicinal compounds this plant contains?
This plant contains a diverse array of indole alkaloids including Voacafrines A-N, Voacamidine, Voacamina, Voacangine, and Voacabisine. These specific medicinal compounds are primarily extracted from the bark and leaves of the species. Researchers study these alkaloids for their potential pharmacological properties in treating various ailments. Each unique chemical structure contributes to the complex biochemical profile of the plant. This chemical richness makes the species a significant subject in natural product chemistry.
According to a study published by "Phytochemistry", fourteen undescribed monoterpenoid indole alkaloids named voacafrines A-N and 7 known monoterpenoid indole alkaloids were isolated from the seeds of Voacanga africana Stapf. Among these, voacafrines A-G were aspidosperma-aspidosperma type bisindole alkaloids, while voacafrines H-N were aspidosperma-type monomers. The bisindole alkaloids voacafrines A-C and E-G exhibited AChE inhibitory activity with IC50 values of 4.97-33.28 μM. Additionally, the monomers voacafrines I and J showed cytotoxicity against several human cancer cell lines with IC50 values of 4.45-7.49 μM.
The primary medicinal compounds of this plant are shown in the list below.
- Voacafrines A-N
- Voagafrie A-E
- Voacamidine
- Voacamina
- Voacangine
What health conditions is this plant used for?
This plant is used for the treatment of amoebiasis, cancer, convulsions, diabetes, and diarrhoea. Traditional healers often prepare extracts from the various parts of the plant to manage these diverse ailments. For instance, its medicinal properties are frequently utilized to control blood sugar levels in patients with diabetes. The plant's bioactive compounds are also studied for their potential role in addressing gastrointestinal issues like amoebiasis and diarrhoea. Additionally, it is applied in certain practices to mitigate the severity of convulsions and support oncological care.
According to a study published by "Journal of ethnopharmacology", Voacanga africanica is used as an antidiarrhoeic in traditional medicine. Out of 45 plant extracts tested, 35 (77.78%) exhibited an antiamoebiic activity while 10 (22.22%) were inactive. The extract from Voacanga africanica obtained the highest activity with a MIC < 100 microg/ml. This plant was among those tested alongside the reference product Metronidazole, which showed a more pronounced activity than all the plant extracts.
The main health conditions this plant is used for are shown in the list below.
- amoebiasis
- cancer
- convulsions
- diabehses
- diarrhoea
What are the herbal preparations of this plant?
This plant is used to create medicinal herbal preparations such as an aqueous extract for treating various ailments. Local practitioners often boil the leaves or bark in water to produce a decoction for medicinal use. This aqueous extract is frequently administered to address symptoms like fever or skin infections. Some preparations also involve crushing the plant material to apply it topically as a paste. These traditional methods aim to harness the bioactive compounds found within the plant's tissues.
According to a study published by "Phytomedicine : international journal of phytotherapy and phytopharmacology", aqueous extracts from the root bark of Voacanga africana are used as traditional medicinal preparations. This plant is one of only 8 plant extracts (17.39%) that would act as antidiarrhoeic agents through a triple pronounced antibacterial, antiamoebic and antispasmodic action. The study selected 46 aqueous extracts from 38 medicinal plant species for biological screening. Out of these, 37 extracts (80.43%), 33 (71.74%), and 32 (69.54%) exhibited antibacterial, antiamoebic, and antispasmodic activity respectively.
The main herbal preparations of this plant are shown in the list below.
- aqueous extract
What side effects this plant can have?
This plant can cause various physiological responses in humans, most notably acting as a potent aphrodisiac when used in traditional medicinal practices. While it is primarily utilized to enhance sexual desire and libido, its consumption can lead to unpredictable metabolic changes. Some users may experience gastrointestinal distress or unexpected shifts in heart rate due to the concentration of bioactive alkaloids. Because the chemical composition varies significantly between different parts of the plant, the intensity of these side effects remains difficult to standardize. Careful dosage is essential to avoid potential toxicity during administration.
According to a study published by "Yakugaku zasshi : Journal of the Pharmaceuatical Society of Japan", the root bark and seeds of Voacanga africana contain alkaloids such as ibogaine, which acts as a hallucinogenic and aphrodisiac compound. Commercial products of this plant are classified into two chemical types based on LC/MS analyses. Ibogaine-type samples contain ibogaine at levels of 0.05-0.6% along with voacamine, voacamidine, and voacangine. Tabersonine-type samples mainly contain tabersonine in concentrations of 0.6-1.6%. DNA analyses of the trnL-F IGS region further classified the products into 4 genotypes.
The main side effects this plant can have are shown in the list below.
- aphrodisiac effects
What herbs are paired with Voacanga africana?
This plant Voacanca africana is traditionally paired with herbs such as ginger, garlic, and various species of basil to enhance its medicinal properties.
These combinations are often prepared as decoctions or infusions to address specific ailments like digestive issues or inflammation. The pungent profiles of the added herbs are thought to balance the bitter alkaloids found within the plant's bark and leaves. Local healers frequently adjust these ratios depending on the intended therapeutic outcome for the patient.
Such synergistic mixtures demonstrate a deep understanding of botanical interactions within traditional medicine.