Marigold pepper
StarPiper marginatum
Synonyms: Schilleria marginata, Artanthe marginata
Western Herbalism Properties
Traditional Uses
In Caribbean and Amazonian folk medicine, leaves of Piper marginatum are prepared as aromatic infusions for digestive complaints and menstrual cramps, and the crushed foliage is applied to skin irritations and used as an insect repellent; modern studies confirm larvicidal activity of the leaf essential oil against Aedes aegypti (Wikipedia).
Gallery
Botanical Description
Piper marginatum, the marigold pepper or anisillo, is an aromatic shrub or robust herb in the Piperaceae growing 1–3 m tall, with distinctly swollen, jointed nodes and slender, more or less zigzag stems. Leaves are alternate, simple, broadly ovate to nearly orbicular, 8–18 cm long, with a deeply cordate base, an acuminate apex, entire margins, and 5–9 palmate-pinnate veins arising from near the base; the upper surface is dark green and the lower paler, often finely pubescent, and the whole leaf is strongly aromatic of anise or sassafras when crushed. The petiole is winged at the base and sheaths the stem. Inflorescences are slender, erect, white to cream-coloured spikes 5–15 cm long borne opposite the leaves, the densely packed minute flowers lacking a perianth and each subtended by a peltate bract. Fruits are small, fleshy, one-seeded drupes embedded in the rachis. It grows in moist, shaded understorey of Amazonian, Caribbean, and Central American rainforests.
Active Constituents
(E)-Isoosmorhizole and isoosmorhizole
Phenylpropanoids (methylenedioxy arylpropenes)Concentration: Among the dominant essential-oil components (isoosmorhizole up to ~25%, E-isomer up to ~33% depending on chemotype)
Characteristic anise-scented phenylpropanoids that define several P. marginatum chemotypes and contribute to antioxidant and antimicrobial activity of the oil.
2-Methoxy-4,5-methylenedioxypropiophenone
Methylenedioxyphenyl propiophenoneConcentration: Major essential-oil component (roughly 9-20%)
A signature aryl ketone of the species contributing to the oil's characteristic profile and reported bioactivity.
3,4-Methylenedioxypropiophenone
Methylenedioxyphenyl propiophenoneConcentration: Major compound in Santarem-region leaf oil
Identified as the principal component of a leishmanicidal leaf-oil sample and associated with growth inhibition of Leishmania amazonensis promastigotes.
Anethole and related phenylpropanoids
PhenylpropanoidsConcentration: Variable minor-to-moderate
Contribute the anise-like aroma ('anisillo') and to antimicrobial and antioxidant activity.
Aristolactams, amides and flavonoids
Isoquinoline-derived alkaloid/amide and flavonoid classesConcentration: Non-volatile extract constituents
Purified from the extracts (as opposed to the essential oil) and linked to the plant's antifungal, antitumoral and haemostatic folk applications.
Preparation Methods
Leaf infusion / decoction
Parts: leaf
Aromatic leaves are infused or decocted in Amazonian and Caribbean folk medicine for digestive upset, colds and as an emmenagogue and wound wash. Because the essential oil is rich in methylenedioxyphenyl (safrole-type) constituents, avoid concentrated or prolonged internal use, particularly in pregnancy.
Essential oil (topical / repellent)
Parts: leaf, aerial parts
Steam-distilled leaf oil is used topically and as an insect repellent/insecticide. The concentrated oil should not be ingested; dilute well for skin application and patch-test first.
Clinical Studies
Leishmanicidal activity of Piper marginatum Jacq. from Santarem-PA against Leishmania amazonensis
Leaf essential oil and ethanolic extract inhibited Leishmania amazonensis promastigotes; the oil was rich in 3,4-methylenedioxypropiophenone. Activity was evaluated alongside cytotoxicity against macrophages.
Chemical Composition, Preliminary Toxicity, and Antioxidant Potential of Piper marginatum Sensu Lato Essential Oils and Molecular Modeling Study
Characterised the phenylpropanoid-dominated essential oils (high (E)-isoosmorhizole and methylenedioxypropiophenones), assessed antioxidant capacity and preliminary Artemia toxicity, and modelled the activity of the major constituents.
References
- da Silva JKR, Andrade EHA, Maia JGS, et al.. Folk medicine, phytochemistry and pharmacological application of Piper marginatum . Revista Brasileira de Farmacognosia, 26(6):767-779 (2016) [DOI]
- Molecules special-issue authors. Chemical Composition, Preliminary Toxicity, and Antioxidant Potential of Piper marginatum Sensu Lato Essential Oils and Molecular Modeling Study . Molecules, 28(15):5814 (2023) [DOI]
This information is for educational purposes only and is not intended to replace professional medical advice. Always consult a qualified healthcare provider before using any herbal remedy, especially if you are pregnant, nursing, or taking medications.
📝 Notes
Public notes from the community and your own private notes on Marigold pepper.
No notes yet.