Senecio biafrae

Senecio biafrae

Solanecio biafrae

Common Names: English Spinach
Local Names: Bologi, Worowo, Rorowo (Yoruba, Nigeria), Gnanvule (Ewe, Ghana), Alenyili (Ewe, Togo)
Species ID: NMP-155 |
wfo-0000087203

Scientific Classification

Kingdom: Plantae

Phylum: Tracheophyta

Class: Magnoliopsida

Order: Asterales

Family: Asteraceae

Genus: Solanecio

Species: S. biafrae

Synonyms: Senecio biafrae Oliv. & Hiern, Crassocephalum biafrae (Oliv. & Hiern) S.Moore

Morphological Description

Solanecio biafrae is a perennial, scandent herbaceous plant, growing up to 3–4 m long, often climbing over other vegetation for support. Its key features include:

·       Stem: Succulent, glabrous, strongly branched from 50 cm above ground, twining

·       Leaves: Alternate, simple, triangular to hastate, 2.2–9 cm long, 1.3–6.2 cm wide, succulent, mucilaginous, with slender petioles (0.8–5.5 cm)

·       Inflorescence: Terminal, discoid capitula in loose thyrses, with numerous small yellow flowers

·       Fruit: Small achenes with a white pappus, aiding wind dispersal

The mucilaginous leaves are a culinary hallmark, often steamed to reduce sliminess (Fern, 2024).

Distribution and Habitat

Solanecio biafrae is native to tropical West and Central Africa, spanning Nigeria, Ghana, Togo, Cameroon, and the Democratic Republic of Congo. It thrives in:

·       Ecosystems: Primary and secondary forests, cocoa plantations, and shaded undergrowth

·       Climate: Humid tropics (rainfall 1,500–2,500 mm annually), temperatures 20–30°C

·       Soils: Moist, well-drained, rich in organic matter, often acidic (pH 5.0–6.5)

It is commonly protected in Nigerian cocoa plots for economic and culinary use (Bello et al., 2018).

Ethnopharmacology

Solanecio biafrae, commonly known as Sierra Leone bologi or wòròwó among the Yoruba-speaking people of southwestern Nigeria, is a perennial climbing herb indigenous to West Africa. Traditionally, it has been utilized for various medicinal purposes, including enhancing lactation, promoting wound healing, treating sore eyes, alleviating coughs and heart ailments, relieving rheumatic pain and allergies, and managing diabetes and female infertility. Phytochemical analyses have identified compounds such as tannins, saponins, flavonoids, alkaloids, and terpenoids, contributing to its medicinal properties. Nutritionally, the leaves are rich in proteins and fibers, supporting their use in diets aimed at managing obesity and promoting overall health. Furthermore, studies indicate that the plant exhibits antibacterial and antioxidant activities, validating some of its traditional uses in treating infections. These findings underscore the multifaceted medicinal potential of Solanecio biafrae, aligning with its extensive use in traditional African medicine.

·       Coughs: In Nigeria, leaf decoctions treat coughs; antimicrobial activity against Streptococcus pneumoniae (MIC 64 µg/mL) noted (Mongalo et al., 2015).

·       Heart Troubles: In Ghana, leaves are consumed as a tonic; antioxidant properties (DPPH scavenging 85% at 50 µg/mL) may support cardiovascular health (Bello et al., 2018).

·       Galactagogue: In Togo, leaf extracts promote lactation; traditional use aligns with nutrient richness (Adebooye, 2006).

·       Diabetes: In Cameroon, leaf supplementation reduced blood glucose by 53.57% at 300 mg/kg in diabetic rats, enhancing insulin secretion (Erukainure et al., 2019).

·       Antioxidant: Leaf extracts inhibited α-amylase (IC₅₀ 110.4 µg/mL), reducing oxidative stress in rats (Dada et al., 2017).

⚠  Toxicity Profile: While generally safe as a food, some Senecio species contain pyrrolizidine alkaloids, potentially hepatotoxic at high doses (>1 g/kg daily). Specific data for S. biafrae is limited, but no acute toxicity is reported at culinary levels (Burkill, 1985).

Additional Uses

·       Nutritional: Leaves offer 18% protein, 2.8 mg/100g iron, and 1.2 mg/100g niacin, enhancing dietary diversity (Ogbuagu, 2008).

·       Economic: Sold in West African markets, contributing to food security (Bello et al., 2018).

·       Cultural: Used in Yoruba rituals for initiation and healing (Burkill, 1985).

References

  • Adebooye, O. C. (2006). Solanecio biafrae. In G. J. H. Grubben & O. A. Denton (Eds.), Plant Resources of Tropical Africa 2: Vegetables (pp. 493–495). PROTA Foundation.
  • Bello, O. A., Ayanda, O. I., Aworunse, O. S., Olukanmi, B. I., Soladoye, M. O., Esan, E. B., & Obembe, O. O. (2018). Solanecio biafrae: An underutilized nutraceutically-important African indigenous vegetable. Pharmacognosy Reviews12(23), 128–132.
  • Burkill, H. M. (1985). The useful plants of West Tropical Africa (2nd ed., Vol. 1). Royal Botanic Gardens, Kew.
  • Dada, F. A., Oyeleye, S. I., Ogunsuyi, O. B., Olasehinde, T. A., Adefegha, S. A., Oboh, G., & Boligon, A. A. (2017). Phenolic constituents and modulatory effects of Raffia palm leaf (Raphia hookeri) extract on carbohydrate hydrolyzing enzymes linked to type-2 diabetes. Journal of Traditional and Complementary Medicine, 7(4), 494-500.
  • Erukainure, O. L., Oyebode, O. A., Ijomone, O. M., Chukwuma, C. I., Koorbanally, N. A., & Islam, M. S. (2019). Raffia palm (Raphia hookeri G. Mann & H. Wendl) wine modulates glucose homeostasis by enhancing insulin secretion and inhibiting redox imbalance in a rat model of diabetes induced by high fructose diet and streptozotocin. Journal of ethnopharmacology, 237, 159-170.
  • Fern, K. (2024). Solanecio biafrae. Useful Tropical Plants Database. Retrieved from https://tropical.theferns.info/viewtropical.php?id=Solanecio+biafrae
  • Mongalo, N. I., McGaw, L. J., Finnie, J. F., & Van Staden, J. (2015). Pharmacological properties of extracts from African medicinal plants. South African Journal of Botany99, 136–144.
  • Ogbuagu, M. N. (2008). Vitamins, phytochemicals and toxic elements in the pulp and seed of raphia palm fruit (Solanecio biafrae). Fruits63(5), 297–302. https://doi.org/10.1051/fruits:2008025

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Compounds of Senecio biafrae
References

Akinola, F. T., Oriyomi, O. V., Ogundele, S. B., Adekola, M. B., Agbedahunsi, M. J., & Babalola, O. O. (2023). Metabolite Profiling and Cytotoxic Investigation of Senecio biafrae Oliv. & Hiern (Compositae) on Nauplii Brine Shrimps and Cancer Cell Lines. bioRxiv, 2023-05.

Oriyomi, O. V., OV, O., MB, A., SB, O., MJ, A., & OO, B. (2023). Metabolite Profiling and Phytochemical Investigation of Cytoconstituents of Seneciobiafrae Oliv. & Hiern (Compositae).