Bergera koenigii

Murraya koenigii, commonly known as the curry‑leaf tree, has a long history of use as an herbal infusion in several South Asian and African traditions. In Ayurvedic practice in India, dried leaves are steeped in hot water to produce a mild tea that is taken to relieve stomach pain, diarrhea, and flatulence; this use is documented in the Indian Pharmacopoeia, 2018. In Sri Lanka, the same leaves are brewed as a tea to soothe coughs and colds, a practice described in the Sri Lankan Traditional Medicine Journal, 2015. In parts of East Africa, particularly Kenya, a decoction of fresh leaves is consumed to reduce fever and to support the treatment of malaria, as reported in the African Journal of Traditional, Complementary and Alternative Medicines, 2014. In all three cultures the primary plant part used is the fresh or dried leaf, and the preparation is an infusion or decoction rather than a maceration or poultice.

A simple, safe recipe for a mild curry‑leaf tea is as follows: take 5 g of dried Murraya koenigii leaves and add them to 250 ml of freshly boiled water. Allow the mixture to steep for 5 minutes, then strain and drink two cups per day. This dosage is well within the limits used in traditional practice and is unlikely to cause adverse effects. However, because the leaves contain essential oils that can be irritating in large amounts, it is advisable to keep the daily intake below 10 g of dried leaves, and pregnant women should consult a healthcare provider before regular consumption.

The therapeutic effects of the tea are largely attributed to the essential‑oil constituents that have been isolated from the leaves. Limonene, linalool, eucalyptol, and beta‑pinene are the most abundant compounds, and each has documented anti‑inflammatory, antimicrobial, and antispasmodic activity. Limonene, for example, has been shown to reduce intestinal inflammation in animal models, while linalool exhibits antidiarrheal properties. The combination of these terpenes likely underlies the traditional use of the infusion for gastrointestinal upset and respiratory irritation.

Modern research continues to validate these ethnobotanical claims. Recent studies in the Journal of Ethnopharmacology, 2022, have demonstrated that Murraya koenigii leaf extract can lower blood glucose levels in diabetic rats, and other investigations have confirmed its antioxidant capacity. The plant remains commercially available as a spice in grocery stores worldwide, and its essential oil is also sold as a natural flavoring and aromatherapy product, ensuring that the traditional uses of this humble leaf are still accessible today.

Common products:
Fresh or dried leaf (culinary flavoring); leaf essential oil (flavor/fragrance); seed oil (edible and industrial uses); occasionally fruit pulp (regional food ingredient).

Industrial and craft applications:
Leaf essential oil is used as a flavoring agent in processed foods and as a fragrance component in soaps and detergents; solvent extraction yields an oleoresin used as a natural flavor concentrate in savory foods and feedstocks. The oil contains carbazole alkaloids; eugenol, β-caryophyllene, and α-pinene are prominent components reported in regional spice literature. Seed oil’s fatty acid profile (high in linoleic acid) is suitable for cosmetic emollient applications and industrial uses such as soapstock or as a frying medium under validated food-processing conditions.

Food and beverages (non-medicinal):
Curry leaves (Bergera koenigii) are a staple seasoning in South Asian cuisine, added whole or fried to tempering and spicing mixtures for their distinctive aroma; dried leaves are also used for the same purpose. The seed oil is employed as an edible oil for cooking and frying, and the fruit pulp is used in some regional food products. Non-leaf materials are only mentioned where they are explicitly documented for this species.

Colorants and tanning:
This taxon is not documented as a source of natural dyes, tannins, or colorants for textile or leather processing in the referenced sources.

Wood and fiber:
Wood is used locally for fuel and small crafts; no industrial-grade timber use or fiber applications are documented for this species.

Fragrance and cosmetics:
Leaf essential oil is used in fragrance and flavor blends for soaps, detergents, and processed foods; its carbazole alkaloid content underpins characteristic aromatic notes. The seed oil is used in cosmetic emulsions, where its fatty acid composition provides emollient properties.

Properties relevant to use:
Leaf volatile oil includes eugenol, β-caryophyllene, α-pinene, and γ-terpinene; the oil is described as strongly aromatic. Seed oil is characterized by high linoleic acid content, a favorable iodine value for food and cosmetic uses, and a saponification value typical of non-drying triglyceride oils. The seed oil’s yellow color is noted in spice utilization literature.

Standards and regulation:
Food uses are governed by national food additive and labeling rules where marketed; leaf essential oil and seed oil follow regional practices for flavor/fragrance and cosmetic raw materials. No species-specific ISO/ASTM/EN standards are documented.

Sustainability and sourcing:
Leaves are harvested from smallholder trees in India and neighboring regions; due to high local demand and seasonal supply variability, yields and quality can fluctuate. Sustainable harvesting focuses on leaving sufficient leaf area for tree health and avoiding bark damage during plucking.

No subspecies added yet.

No variety added yet.

No subvariety added yet.

No forms added yet.

No germination or propagation data was added yet.

No distribution data was extracted from POWO/KEW yet. We are constantly monitoring for new data.

No known contributors. Be the first!

In private collections	0
In public collections	0

You need to be authenticated in order to add this taxon to a personal collection.