Psoralea corylifolia
What's the taxonomical classification of Psoralea corylifolia?
Psoralea corylifolia belongs to the kingdom Plantae and is classified within the phylum Streptophyta. At the class level, it is situated under Equisetopsida, falling into the subclass Magnoliidae. Its taxonomic lineage continues through the order Fabales and into the family Fabaceae. Finally, the plant is identified by its genus, Psoralea, and its specific species epithet, corylifolia.
| Taxonomic Rank | Classification |
|---|---|
| Kingdom | Plantae |
| Phylum | Streptophyta |
| Class | Equisetopsida |
| Subclass | Magnoliidae |
| Order | Fabales |
| Family | Fabaceae |
| Genus | Psoralea |
| Species | corylifolia |
What are the morphological characteristics of this plant?
Psoralea corylifolia has an erect, annual herb structure reaching heights of 30 to 60 centimeters, characterized by pinnately compound leaves and small, pale violet or white flowers. The leaves typically consist of several pairs of leaflets that are oblong or ovate in shape with acute tips. Its inflorescence is arranged in axillary racemes, where the tiny, fragrant blossoms emerge from the leaf axils. The plant produces small, flattened, oval-shaped pods that eventually contain the characteristic dark, oblong seeds. These seeds are the most significant morphological feature due to their high oil content and medicinal value.
What is the geographical distribution of this plant?
This plant is native to the tropical and subtropical regions of India, China, and parts of Southeast Asia. It primarily thrives in warm climates where it can grow in diverse environments such as open forests and scrublands. Cultivation is widespread across the Indian subcontinent, particularly in states with suitable seasonal rainfall. In China, it is frequently found in southern provinces where the temperature remains consistently high. Its distribution is largely determined by the availability of well-drained soil and adequate sunlight.
How is this plant cultivated?
This plant Psoralea corylifolia is cultivated in tropical and subtropical regions through direct seeding in well-drained, sandy loam soils with a pH ranging from 7.0 to 8.5.
It requires full sunlight and moderate temperatures to thrive during its growth cycle. Farmers typically plant the seeds at the beginning of the monsoon season to ensure adequate moisture for germination. Regular irrigation is necessary during the early stages, although the mature plant is relatively drought-tolerant.
Proper weeding and occasional organic fertilization help maximize the yield of the medicinal seeds.
What parts of this plant are used medicinally?
Psoralea corylifolia contains medicinal compounds primarily concentrated in its dried seeds, which are known as bakuchi. These seeds are the most significant part used in traditional medicine due to their high concentration of furanocoumarins like psoralen. While the seeds are the primary focus, the oil extracted from them is also widely utilized for treating various skin conditions. Some traditional practices also involve the use of the plant's roots and leaves, though these are far less common than the seed extracts. The therapeutic efficacy of the plant relies heavily on the specific chemical profile found within these seed components.
What are the pharmacological activities of Psoralea corylifolia?
This plant has diverse pharmacological activities including anti-vitiligo, anti-inflammatory, anti-oxidant, anti-diabetic, and anti-cancer properties. Its ability to treat vitiligo is primarily driven by psoralen, which increases skin pigmentation through ultraviolet light activation. The presence of various flavonoids and coumarins contributes to its potent anti-inflammatory and anti-oxidant capacities by neutralizing free radicals. Research also indicates that its bioactive compounds help regulate blood glucose levels, demonstrating significant anti-diabetic potential. Furthermore, certain extracts from the plant exhibit anti-cancer effects by inducing apoptosis in malignant cell lines.
According to a study published by "RSC advances", extracts of Psoralea corylifolia L. have been used for the repigmentation of leukoderma or vitiligo in traditional Uygur medicine for thousands of years. The active ingredient of the plant, furocoumarins, has been clinically applied because it exhibits strong photosensitivity. Based on previous work, a new series of furocoumarin derivatives labeled 8a-8o containing 1,2,3-triazole was designed and synthesized. Biological evaluation of melanin contents and tyrosinase activity in B16 murine cells indicated that five compounds, specifically 8a, 8j, 8m-8o, were more potent than the positive control 8-MOP on melanogenesis. Among these, compounds 8a and 8o showed the best stimulating effect on tyrosinase activity.
The primary pharmacological activities of this plant are shown in the list below.
- anti-vitiligo
- anti-inflammatory
- anti-oxidant
- anti-diabetic
- anti-cancer
What medicinal compounds this plant contains?
This plant contains several potent medicinal compounds including 8-methoxypsoralen, bakuchiol, psoralin, psoralidin, and various furanocoumarins. These bioactive constituents are primarily studied for their significant dermatological and therapeutic properties. Specifically, the presence of psoralin and 8-methoxypsoralen makes the plant a key source of furocoumarins used in treating certain skin conditions. Bakuchiol is another notable component often researched as a natural alternative to retinol in skincare formulations. Additionally, psoralidin contributes to the overall pharmacological profile of the species.
According to a study published by "Natural product research", the plant Psoralea corylifolia contains the active molecule Bakuchiol. Bakuchiol demonstrated a significant elevation of ACh transmission and a reduction of reactive oxygen species (ROS) levels. This compound also showed the ability to extend lifespan. Furthermore, Bakuchiol showed efficacy in reducing amyloid β and lipid levels. This process possibly occurs through the upregulation of hsf-1 and lgg-1 genes.
The primary medicinal compounds of this plant are shown in the list below.
- 8-methoxypsoralen
- Bakuchiol
- Psoralin
- Psoralidin
- Furanocoumarins
What health conditions is this plant used for?
This plant is used for treating vitiligo, psoriasis, alopecia, leprosy, and various abnormal pigmentation disorders. Its therapeutic efficacy is primarily attributed to the presence of psoralen, which helps stimulate melanin production in the skin. When applied topically, it can assist in restoring color to depigmented patches caused by autoimmune issues. The plant also demonstrates significant anti-inflammatory and antifungal properties that aid in managing chronic skin conditions. Regular clinical application helps regulate skin cell turnover to address scaling and hair loss.
According to a study published by "Clinical, cosmetic and investigational dermatology", Psoralea corylifolia is used for the treatment of vitiligo and hypermelanosis. Vitiligo is a condition affecting around 1% of the world's population. The use of Psoralea corylifolia has been associated with reports of blistering, erythema, acute hepatitis, and mutagenesis. The study identified 55 articles, including 47 clinical trials and 8 case reports, to review medicinal plants used for these pigmentation disorders.
The main health conditions this plant is used for are shown in the list below.
- Vitiligo
- Psoriasis
- Leprosy
- Alopecia
- Abnormal pigmentation disorder
What are the herbal preparations of this plant?
This plant can be prepared as a powder, oil, tincture, decoction, or extract for various therapeutic uses. The seeds are frequently crushed into a fine powder to be used in topical applications or ingested. Babchi oil is extracted from the seeds and applied directly to the skin to treat dermatological conditions. Practitioners may also create a tincture by soaking the plant material in alcohol to concentrate its active compounds. Additionally, a decoction can be made by boiling the seeds in water to release water-soluble constituents. Concentrated extracts are often used in standardized herbal formulations to ensure precise dosing.
The main herbal preparations of this plant are shown in the list below.
- Powder
- Oil
- Tincture
- Decoction
- Extract
What side effects this plant can have?
This plant can cause photosensitivity, skin irritation, nausea, vomiting, diarrhea, abdominal pain, hepatotoxicity, and dizziness. Exposure to its active compounds can lead to increased sensitivity to sunlight and localized inflammatory reactions on the skin. Ingesting the plant may trigger significant gastrointestinal distress including nausea, vomiting, diarrhea, and abdominal pain. Severe cases or improper usage may result in hepatotoxicity, which indicates potential damage to the liver. Some individuals may also experience neurological symptoms such as dizziness during or after consumption.
The main side effects this plant can have are shown in the list below.
- Photosensitivity
- Skin irritation
- Nausea
- Vomiting
- Diarrhea
- Abdominal pain
- Hepatotoxicity
- Dizziness