Anacardium occidentale
What's the taxonomical classification of Anacardium occidentale?
Anacardium occidentale belongs to the kingdom Plantae and is classified under the phylum Streptophyta. Within this group, it is categorized under the class Equisetopsida and the subclass Magnoliidae. Following its taxonomic hierarchy further, it falls under the order Sapindales and the family Anacardiaceae. Finally, the plant is identified by its specific genus, Anacardium, and its species name, occidentale.
| Taxonomic Rank | Classification |
|---|---|
| Kingdom | Plantae |
| Phylum | Streptophyta |
| Class | Equisetopsida |
| Subclass | Magnoliidae |
| Order | Sapindales |
| Family | Anacardiaceae |
| Genus | Anacardium |
| Species | occidentale |
What are the morphological characteristics of this plant?
Anacardium occidentale has a large, woody perennial structure characterized by a thick trunk, spreading branches, and dark, leathery leaves that are oblong or elliptical in shape. The foliage typically displays a glossy green surface with prominent pinnate venation. This tree produces small, fragrant, yellowish-white flowers that grow in terminal panicles. Following pollination, the plant develops a unique fruit consisting of a fleshy, swollen accessory pedicel known as a cashew apple and a kidney-shaped drupe containing the edible seed. The bark is generally rough and greyish, providing protection for the extensive vascular system of the tree.
What is the geographical distribution of this plant?
This plant is native to the tropical regions of Northeastern Brazil, where it grows naturally in the caatinga and cerrado biomes. Its primary distribution is concentrated within the states of Bahia, Pernambuco, and Alagoas. Beyond its wild habitats, the species has been introduced to various tropical zones across Africa and Southeast Asia due to its commercial value. It thrives specifically in coastal areas and lowland forests that provide consistent warmth and humidity. Cultivation has expanded globally to other tropical climates where suitable soil conditions allow for cashew production.
What parts of this plant are used medicinally?
Anacardium occidentale contains medicinal properties in its seeds, bark, leaves, and fruit pulp. The seeds are often processed to extract oils that possess antimicrobial and antioxidant qualities. Extracts from the bark are utilized in traditional medicine to treat inflammatory conditions and skin ailments. The leaves can be brewed into infusions to help manage fever or digestive issues. Additionally, the fruit pulp serves as a source of vitamins that support overall immune health.
What are the pharmacological activities of Anacardium occidentale?
This plant has analgesic, anti-inflammatory, anti-oxidant, antibacterial, and anti-diabetic pharmacological activities. The various extracts from Anaecardium occidentale demonstrate the ability to alleviate pain and reduce swelling in biological models. Its high concentration of bioactive compounds helps neutralize free radicals to provide significant antioxidant protection. Furthermore, the plant exhibits inhibitory effects against several bacterial strains, making it a candidate for antimicrobial study. Research also suggests that its chemical constituents can assist in managing blood glucose levels through anti-diabetic mechanisms.
As discussed in a study, Anacardium occidentale L. is a medicinal plant possessing powerful anti-oxidative and anti-inflammatory properties. When animals were orally treated with 100 mg/kg of cashew nuts 30 min before a carrageenan injection, the nuts reduced the development of induced paw edema and limited pain. The plant ameliorated the diminution of anti-oxidative enzymes and decreased myeloperoxidase and malondialdehyde activity caused by the injection. Furthermore, Anacardium occidentale acted by blocking the pro-inflammatory cytokines response and the nitrate/nitrite formation stimulated by the injection. These anti-inflammatory and analgesic effects are relevant to oxygen free radical scavenging, anti-lipid peroxidation, and the inhibition of inflammatory cytokine formation.
What medicinal compounds this plant contains?
This plant contains andrographolide, flavonoids, saponins, tannins, and phenolic compounds. The presence of andrographolide is particularly significant due to its potent anti-inflammatory and antimicrobial properties. Flavonoids and phenolic compounds within the plant contribute to its strong antioxidant activities. Additionally, the saponins and tannins work together to provide various therapeutic benefits to the human body. These diverse chemical constituents make the plant a valuable resource in medicinal studies.
As discussed in a study, Anacardium occidentale contains phytocompounds that were evaluated against the SARS-CoV-2 nsp16 target. Out of 100 phytocompounds isolated from fourteen Nigerian plants, only 59 passed the drug-likeness analysis test. From these, specific compounds isolated from Anacardium occidentale were among the six that showed good binding affinity at the active site. These selected compounds exhibited docking scores ranging from - 7.9 to - 8.4 kcal/mol. Further studies on the in vitro and in vivo activities of these 6 hit phytocompounds are required to confirm efficacy.
What health problems is this plant used for?
This plant is used for treating diabetes mellitus, inflammation, diarrhea, leishmaniasis, and various fungal infections. The medicinal properties of the leaves and bark are often utilized to manage blood sugar levels in diabetic patients. Its natural compounds also work to reduce systemic inflammation and soothe gastrointestinal distress caused by diarrhea. Additionally, extracts from the plant demonstrate efficacy in combating the parasites responsible for leishmaniasis. It is also frequently applied as a remedy to clear stubborn fungal infections on the skin.
What are the herbal preparations of this plant?
This plant can be used to create a fixed oil from its seeds, a tincture from its bark or leaves, and an infusion from its dried parts. The fixed oil extracted from the kernels is highly valued for its emollient properties and potential medicinal applications. When prepared as a tincture, the plant extracts active compounds that are often used in traditional topical treatments. An infusion of the plant material provides a liquid preparation frequently consumed for its specific therapeutic benefits. These diverse methods allow different components of the plant to be utilized for various health purposes.
The main herbal preparations of this plant are shown in the list below.
- Fixed oil
- Tincture
- Infusion
What side effects this plant can have?
This plant can cause severe skin irritation, contact dermatitis, mucosal irritation, allergic reactions, and gastrointestinal distress if handled or ingested improperly. Direct contact with the plant's sap or foliage often leads to painful skin irritation or localized dermatitis. If these substances touch sensitive areas like the eyes or mouth, they may trigger intense mucosal irritation. Some individuals may also experience a systemic allergic reaction characterized by swelling or hives upon exposure. If accidentally consumed, the plant can cause significant gastrointestinal distress, including nausea and abdominal pain.
The main side effects this plant can have are shown in the list below.
- Skin irritation
- Dermatitis
- Mucosal irritation
- Allergic reaction
- Gastrointestinal distress