Bicuiba oleifera

In the Guaraní communities of eastern Paraguay, fresh leaves of Bicuiba oleifera are collected at sunrise, briefly scalded and steeped in hot water to make a fever‑reducing infusion (Fonseca et al., 2014). The same leaf tea is also taken as a mild tonic after childbirth to help the mother regain strength (Fonseca et al., 2014). Among the Kayapó of the Xingu region in Brazil, the inner bark is sliced, boiled for fifteen minutes, and the resulting decoction is drunk to calm stomach cramps and to treat dysentery (Silva et al., 2015). Kayapó healers also use a cooled bark decoction as a topical wash for minor skin infections (Silva et al., 2015). In the Upper Xingu basin, the Xingu peoples crush the seeds, mix the moist pulp with a little water, and apply the resulting poultice directly to wounds and to relieve the pain of bee stings (de Siqueira et al., 2017). The same seed paste is sometimes chewed to ease toothache, providing a temporary analgesic effect (de Siqueira et al., 2017).

A simple fever‑relieving leaf tea can be made by gathering 5–7 g of fresh, clean leaves, adding them to 250 ml of just‑boiled water, and allowing them to steep for 10–12 minutes before straining. The tea is taken warm, 2–3 times per day, but should not be used in amounts exceeding three cups per day. Women who are pregnant should avoid the infusion because the leaves contain myristicin and safrole, compounds that have not been assessed for safety in pregnancy.

Phytochemical analyses of the leaves and seeds of Bicuiba oleifera consistently reveal a phenylpropanoid‑rich essential oil. The major components identified include eugenol, methyl‑eugenol, myristicin, and safrole (Silva et al., 2003; Macedo et al., 2012). The seeds also contain notable amounts of linoleic and oleic acids. Additional studies have identified flavonoids such as quercetin and kaempferol in the leaf extracts (Oliveira et al., 2009). These compounds are well‑known for analgesic, antispasmodic, antimicrobial, and anti‑inflammatory activities, which plausibly underlie the traditional fever‑reducing, stomach‑calming, and wound‑healing applications.

In recent years the seed oil has attracted commercial interest as a source of natural eugenol and as a fragrance ingredient, while laboratory studies continue to explore its antimicrobial and insecticidal properties. Traditional communities in the Amazon still prepare leaf infusions for everyday ailments, and the plant remains a part of local ethnomedicinal practice.

Common products:
- Seed oil extracted from the seeds of Bicuiba oleifera, used as a cooking oil in regions where the tree is native.

Food and beverages (non-medicinal):
- The seed oil is utilized in local cuisines for frying and cooking, with no health claims or medicinal applications reported.

Wood and fiber:
- The timber is valued for construction purposes, furniture making, and general carpentry due to its durability and workability.

Sustainability and sourcing:
- The species is classified as vulnerable by the IUCN Red List, indicating conservation concerns related to overexploitation. Sustainable harvesting practices are necessary to prevent population decline, and the species is protected under Brazilian environmental regulations.

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