Terminalia citrina
What's the taxonomical classification of Terminalia citrina?
Terminalia citrina belongs to the kingdom Plantae and is classified under the phylum Streptophyta. Within this lineage, it is categorized under the class Equisetopsida and the subclass Magnoliidae. Its taxonomic hierarchy continues through the order Myrtales and the family Combretaceae. Finally, the plant is defined by its specific placement within the genus Terminalia, specifically identified as the species citrina.
| Taxonomic Rank | Classification |
|---|---|
| Kingdom | Plantae |
| Phylum | Streptophyta |
| Class | Equisetopsida |
| Subclass | Magnoliidae |
| Order | Myrtales |
| Family | Combretaceae |
| Genus | Terminalia |
| Species | citrina |
What are the morphological characteristics of this plant?
Terminalia citrina has a large, spreading tree habit characterized by a thick, rugged trunk and branches that form a dense, rounded crown. The leaves are simple, alternate, and oblong in shape with an entire margin and a smooth, leathery texture. Small, fragrant, cream-colored flowers emerge in clusters from the leaf axils, often appearing during the warmer months. The fruit develops into an ovoid or ellipsoid drupe that turns yellow when mature, giving the species its common name. This tree typically reaches heights of up to twenty meters, depending on its specific environmental conditions.
What is the geographical distribution of this plant?
This plant is native to the tropical and subtropical regions of South and Southeast Asia, including countries such as India, Sri Lanka, Myanmar, Thailand, and parts of Indonesia. It thrives primarily in lowland areas where warm temperatures and seasonal rainfall patterns are prevalent. The species is frequently found growing in moist deciduous forests and along the edges of riverine habitats. In certain parts of its range, it also populates coastal scrublands and seasonally flooded plains. These specific environmental conditions allow the plant to spread effectively across its diverse natural territories.
How is this plant cultivated?
This plant, Terminalia citrina, is best cultivated in tropical or subtropical climates with well-draining soil and consistent sunlight to ensure healthy fruit production.
It thrives in warm environments where temperatures remain stable and avoids frost. Regular watering is necessary during the initial growth stages, though mature trees can tolerate periods of moderate drought. Providing ample space is vital because the tree can grow quite large and requires room for its root system to expand.
Once established, the tree produces fragrant white flowers that eventually develop into edible, citrus-like fruits.
What parts of this plant are used medicinally?
Terminalia citrina contains medicinal compounds found primarily in its bark, leaves, and fruit. The bark is often processed to create decoctions used for treating skin ailments and digestive issues. Its leaves are frequently utilized in traditional remedies to manage inflammation and fever. The fruit serves as a source of various bioactive substances that may assist in metabolic regulation. Together, these different parts provide a versatile range of therapeutic applications in ethnobotanical practices.
What traditional systems uses this plant?
This plant, Terminalia citrina, has been used in traditional Ayurvedic and folk medicine systems across South Asia to treat various ailments including digestive issues, skin infections, and respiratory distress.
The fruit and bark are frequently prepared as decoctions or infusions to manage inflammation and promote wound healing. In many regional practices, the bitter properties of the plant are harnessed to stimulate appetite and correct metabolic imbalances. Historically, local healers have also applied crushed leaves topically to soothe minor injuries and fungal conditions.
These long-standing medicinal applications reflect a deep cultural reliance on the plant's bioactive compounds for primary healthcare.
What are the pharmacological activities of Terminalia citrina?
This plant has antibacterial, antimicrobial, antioxidant, cytotoxic, and cholinesterase inhibition activities. The diverse chemical profile of Terminalia citrina allows it to combat various pathogenic microorganisms effectively. Its potent antioxidant properties help neutralize free radicals and reduce oxidative stress within biological systems. Research also indicates that the plant exhibits cytotoxic effects which may be relevant in cancer research studies. Furthermore, its ability to provide cholinesterase inhibition suggests potential therapeutic applications for managing neurodegenerative conditions.
According to a study published by "Antibiotics (Basel, Switzerland)", the leaf extracts of Terminalia citrina demonstrated noteworthy antibacterial activity against Bacillus cereus with MICs of 468.8 µg/mL for the aqueous extract and 562.5 µg/mL for the methanol extract. These extracts were also effective against MRSA with MICs of 625 µg/mL. Against S. aureus, the aqueous extract showed an MIC of 625 µg/mL, while the methanol extract showed an MIC of 833.3 µg/mL. Twelve combinations of these extracts and conventional antibiotics were found to be synergistic against B. cereus and S. flexneri. Finally, both extracts were determined to be nontoxic.
The primary pharmacological activities of this plant are shown in the list below.
- antibacterial activity
- antimicrobial
- antioxidant
- cytotoxic
- cholinesterase inhibition
What medicinal compounds this plant contains?
This plant contains the medicinal compounds terminalin, terminaloside L, terminaloside M, terminaloside O, and terminaloside P. These specific phytochemicals belong to the group of hydrolyzable tannins found within the species. Scientific investigations often focus on these constituents due to their potential biological activities. The presence of these glycosides contributes to the overall therapeutic profile of the plant. Researchers continue to study how these individual molecules interact with human cellular pathways.
According to a study published by "Antibiotics (Basel, Switzerland)", Terminalia citrina leaf extracts contain diverse medicinal compounds including vitexin 2″-O-p-coumarate, ellagic acid, orientin, rutin, chebulic acid, terminalin, and quercetin-3β-D-glucoside. The aqueous extract uniquely contains two flavonoids, orientin 2″-O-gallate and astragalin. In contrast, the methanol extract contained only pinocembrin and gallic acid. These extracts demonstrated antibacterial activity with MICs of 468.8 µg/mL and 562.5 µg/mL for Bacillus cereus using aqueous and methanol extracts, respectively. Against MRSA, the extracts showed MICs of 625 µg/mL. Furthermore, S. aureus was affected by the aqueous extract at 625 µg/mL and the methanol extract at 833.3 µg/mL.
The primary medicinal compounds of this plant are shown in the list below.
- terminalin
- terminaloside L
- terminaloside M
- terminaloside O
- terminaloside P
What health conditions is this plant used for?
This plant is used for treating foodborne illnesses, gastrointestinal disease, various infections, various ailments, and oxidative damage. Its bioactive compounds help combat harmful pathogens that cause digestive distress and systemic infections. The plant also possesses antioxidant properties that protect cells from oxidative damage caused by free radicals. These therapeutic actions make it a versatile resource for addressing a wide range of various ailments. By mitigating inflammation and microbial growth, it supports overall digestive health.
According to a study published by "Antibiotics (Basel, Switzerland)", Terminalia citrina leaf extracts are evaluated for their antibacterial activity against four bacterial pathogens. The aqueous extract showed antibacterial activity against Bacillus cereus with an MIC of 468.8 µg/mL, while the methanol extract showed an MIC of 562.5 µg/mL. Both extracts were effective against a methicillin-resistant Staphylococcus aureus (MRSA) strain with MICs of 625 µg/mL. Additionally, the extracts were effective against S. aureus with MICs of 625 µg/mL for the aqueous extract and 833.3 µg/mL for the methanol extract. Twelve combinations of these extracts and conventional antibiotics were found to be synergistic against B. cereus and S. flexneri.
The main health conditions this plant is used for are shown in the list below.
- foodborne illnesses
- gastrointestinual disease
- infections
- various ailments
- oxidative damage
What are the herbal preparations of this plant?
This plant can be prepared as a decoction from its bark, leaves, and fruits to treat various ailments such as digestive issues, skin infections, and respiratory distress. The bark is often boiled in water to create a medicinal wash for topical application on wounds or used orally to soothe gastrointestinal discomfort. Leaf extracts are frequently utilized in traditional medicine to help manage fever and inflammation. Additionally, the fruit can be processed into various syrups or infusions meant to support immune health. These diverse preparations highlight the plant's versatility in traditional herbal practices.
The main herbal preparations of this plant are shown in the list below.
What side effects this plant can have?
This plant can cause adverse reactions such as skin irritation, digestive upset, or allergic hypersensitivity in sensitive individuals. While many people use its extracts for medicinal purposes, direct contact with the sap or leaves may lead to contact dermatitis. Ingesting concentrated forms can potentially trigger nausea, stomach cramps, or diarrhea if not used appropriately. There is also limited clinical data regarding long-term systemic effects or interactions with prescription medications. Users should exercise caution and monitor for any unusual physical responses when incorporating this species into their routine.
The main side effects this plant can have are shown in the list below.
What herbs are paired with Terminalia citrina?
This plant, commonly known as kaffir lime, pairs exceptionally well with aromatic herbs such as lemongrass, galangal, basil, and cilantro.
The bright, citrusy notes of the leaves complement the earthy undertones found in these botanical partners. When used in culinary applications, the citrus profile helps to elevate the fragrance of mint and Thai basil in salads or soups. Additionally, combining these herbs with ginger provides a spicy contrast that balances the tartness of the citrus.
This synergy creates a complex flavor profile frequently utilized in Southeast Asian cuisine.