Capparis spinosa
What's the taxonomical classification of Capparis spinosa?
Capparis spinosa belongs to the kingdom Plantae and is classified under the phylum Streptophyta. Within the class Equisetopsida and the subclass Magnoliidae, this plant is situated in the order Brassicales. It is a member of the family Capparaceae, falling under the genus Capparis, and is specifically identified by its species name, spinosa.
| Taxonomic Rank | Classification |
|---|---|
| Kingdom | Plantae |
| Phylum | Streptophyta |
| Class | Equisetopsida |
| Subclass | Magnoliidae |
| Order | Brassicales |
| Family | Capparaceae |
| Genus | Capparis |
| Species | spinosa |
What are the morphological characteristics of this plant?
Capparis spinosa has a woody, perennial shrub structure characterized by spreading branches that often terminate in sharp, formidable spines. The leaves are typically leathery, oval-shaped, and possess a glaucous or grayish-green hue on their surfaces. Large, showy white flowers emerge from the leaf axils, featuring numerous long, prominent stamens that create a brush-like appearance. The plant also produces fleshy, globose fruits that transition from green to a bright red color as they mature. These morphological adaptations allow the species to thrive in harsh, rocky, and arid Mediterranean environments.
What is the geographical distribution of this plant?
This plant is native to the Mediterranean Basin, spanning across southern Europe, North Africa, and the Middle East. It thrives primarily in coastal regions and arid environments where rocky terrain provides necessary drainage. Its range extends from the Atlantic coast of Morocco through the Levant and into parts of central Asia. Because it is highly adaptable to drought, it can be found in various semi-desert landscapes across these territories. The species is frequently encountered in sun-drenched, limestone-rich habitats along the shores of the Mediterranean Sea.
How is this plant cultivated?
This plant requires well-drained, sandy, or rocky soil and full sunlight to thrive in warm, Mediterranean-style climates.
It is highly drought-tolerant once established, making it suitable for xeriscaping and arid regions. Growers should avoid overwatering, as excessive moisture can lead to root rot in this woody shrub. Pruning is often necessary to maintain its shape and encourage the production of large, white flowers.
Because of its hardy nature, it can grow in poor soils where other vegetation might fail.
What parts of this plant are used medicinally?
This plant, Capparis spinosa, offers medicinal benefits through its buds, fruit, leaves, roots, and seeds. The flower buds are commonly pickled and used to treat digestive issues and inflammation. Its fruit is frequently consumed for its nutritional value and potential antioxidant properties. The leaves can be applied topically or prepared as teas to address various ailments. Both the roots and the seeds contain bioactive compounds that assist in managing pain and promoting overall wellness.
According to a study published by "Chemistry & biodiversity", the medicinal value of Capparis spinosa is linked to its richness in bioactive compounds, particularly polyphenols. The plant parts used include the buds and berries, which contain flavonoids such as rutin, quercetin, kaempferol, myricetin, and isorhamnetin, along with phenolic acids like sinapic, para-coumaric, ferulic, and vanillic acid. Raw capers contain the highest concentrations of these compounds, with total polyphenols ranging between 86.19 mg gallic acid equivalent/g DW and total flavonoids between 31.29 mg quercetin equivalent/g DW. These components provide strong antioxidant activity, as demonstrated by in vitro 2,2-diphenyl-1-picrylhydrazyl and ferric reducing antioxidant power tests. Such findings suggest the plant can be used in the development of functional foods, nutraceuticals, and natural health products.
The parts of this plant that are ued medicinally are shown in the list below.
- buds
- fruit
- leaf
- root
- seeds
What traditional systems uses this plant?
This plant, known as the caper bush, has been utilized for millennia across the Mediterranean and Middle East as both a nutritional staple and a medicinal remedy.
Historically, the pickled flower buds have served as a vital seasoning to enhance the flavor of various regional cuisines. Traditional healers often prepared decoctions from the roots and leaves to treat ailments such as inflammation, digestive issues, and skin infections. Ancient texts suggest that the plant was also valued for its potential to regulate blood pressure and manage metabolic functions.
These long-standing practices demonstrate how deeply integrated the species is within the cultural and therapeutic heritage of many desert-dwelling societies.
What are the pharmacological activities of Capparis spinosa?
This plant has diverse pharmacological activities including anti-inflammatory, anti-oxidative, antimicrobial, anti-diabetic, and analgesic properties. Its bioactive compounds work to neutralize free radicals and reduce oxidative stress within cellular environments. The plant also demonstrates the ability to inhibit the growth of various pathogenic microorganisms. Furthermore, specific extracts exhibit significant potential in regulating blood glucose levels to manage diabetes. Finally, its natural constituents provide effective pain relief through its demonstrated analgesic mechanisms.
According to a study published by "Journal of ethnopharmacology", Capparis spinosa has been used as a traditional medicine to relieve rheumatism, pain, and inflammatory diseases. In an in vivo study using 40 male rats, treatment with 100 and 300 mg/kg/d of the extract performed 1 h before LPS administration (1 mg/kg/d; i.p.) for 4 weeks reduced escape latency in the Morris water maze compared to the LPS group (p < 0.001). In vitro experiments using primary microglia pretreating cells with 10-300 μg/ml of the extract followed by 1 μg/ml of LPS showed significant reductions in levels of TNF-α, iNOS, COX-2, IL-1β, IL-6, NO, and PGE2 (p < 0.001). The extract also significantly lowered the iNOS/Arg-1 and NO/urea ratios (p < 0.001) as well as IL-1β and TNF-α levels. These findings provide evidence that Capparis spinosa has a neuroprotective effect against LPS-induced inflammation and cognitive impairment.
The primary pharmacological activities of this plant are shown in the list below.
- anti-inflammatory
- antioxidant
- antibacterial
- anticancer
- antidiabetic
What medicinal compounds this plant contains?
This plant contains a diverse profile of bioactive medicinal compounds including capparispine, rutin, kaempferol, isorrhamnetin, and myricetin. These specific phytochemicals contribute to the significant antioxidant and anti-inflammatory properties observed in the species. The presence of flavonoids like rutin and kaempferol is particularly noted for protecting cells against oxidative stress. Additionally, compounds such as isorrhamnetin and myricetin provide further therapeutic potential in various biological processes. Together, these substances form the chemical basis for the plant's traditional medicinal uses.
According to a study published by "Journal of ethnopharmacology", Capparis spinosa roots contain spermidine alkaloids and stachydrine. Different amounts of free and glycosylated forms of capparispine and analogues were detected, ranging from 0.5% w/w for DEC up to 7.6% w/w for the CH2Cl2 fraction. The study evaluated preparations of Capparis spinosa at doses of 3, 30, 100 and 300mgkg-1. Specifically, powdered roots at 300mgkg-1, DEC at 100mgkg-1, and EtH2O at 300mgkg-1 significantly reduced hypersensitivity to mechanical noxious stimuli and spontaneous pain. The CH2Cl2 and H2O-Res fractions at 30mgkg-1 were the most potent in reverting pain threshold alterations.
The primary medicinal compounds of this plant are shown in the list below.
- capparispine
- rutin
- kaempferol
- isorrhamnetin
- myricetin
What health conditions is this plant used for?
This plant is used for treating type 2 diabetes, liver diseases, inflammation, cancer, and digestive disorders. Its bioactive compounds help regulate blood sugar levels in patients managing insulin resistance. The plant also exhibits hepatoprotective properties that support liver function and cellular repair. Additionally, its potent antioxidant profile assists in reducing chronic inflammation throughout the body. Researchers are further investigating its potential to inhibit the growth of various cancer cells and soothe gastrointestinal distress.
According to a study published by "Complementary therapies in medicine", Capparis spinosa L. fruit extract is used for the treatment of type 2 diabetic patients. In a randomized clinical trial involving 54 type 2 diabetic patients, 28 participants received 400mg of the extract three times a day for two months. The study found that the extract caused a significant decrease in fasting blood glucose levels (p=0.037) and glycosylated hemoglobin (p=0.043). Additionally, triglyceride levels decreased significantly (p=0.29) compared to baseline. The results suggest that Capparis spinosa L. may serve as a safe anti-hyperglycemic and anti-hypertriglyceridemic agent.
The main health conditions this plant is used for are shown in the list below.
- Type 2 diabetes
- Liver diseases
- Inflammation
- Cancer
- Cognitive impairment
What are the herbal preparations of this plant?
This plant is used to create various medicinal herbal preparations including Capparis spinosa extract, decoction, essential oil, infusions, and oxymel. A decoction is typically prepared by boiling the woody parts of the plant to extract its therapeutic properties. Infusions are often made from the leaves or flowers to provide a gentler remedy for digestive support. The essential oil is distilled from the plant components to serve as a potent aromatic or topical agent. Additionally, oxymel combines the plant's juices with honey and vinegar to create a flavorful medicinal syrup.
According to a study published by "Central nervous system agents in medicinal chemistry", Capparis spinosa extract was administered orally once a day for 7 days before the induction of middle cerebral artery occlusion. The study investigated the effects of this extract in Wistar rats following 30-min induced brain ischemia and 24 h of reperfusion. Pretreatment with Capparis spinosa reduced the neurological deficit score, histopathological alterations, and infarct volume measured 24hr after the termination of MCAO. Additionally, the extract significantly reduced the level of malondialdehyde with concomitant increases in the levels of thiol in the brain tissues. This research demonstrates that Capparis spinosa extract effectively protects against MCAO injury through the attenuation or suppression of oxidative stress.
The main herbal preparations of this plant are shown in the list below.
- Capparis spinosa extract
- decoction
- essential oil
- infusions
- oxymel
What side effects this plant can have?
This plant can trigger significant adverse health effects including cancer, developmental toxicity, endocrine disruption, and immunosuppressive activity. Some studies indicate that certain compounds within the plant may promote the growth of malignant cells or interfere with cellular division. Exposure to its chemical constituents has also been linked to potential developmental toxicity that could harm an embryo or fetus. Furthermore, the plant may act as an endocrine disruptor by interfering with natural hormone signaling pathways in the body. Finally, certain bioactive elements have demonstrated the capacity for immunosuppressive activity, which could weaken the body's natural defense mechanisms.
According to a study published by "Chemistry & biodiversity", the leaves of Capparis spinosa L. were found to contain two plasticizers, bis(2-ethylhexyl) terephthalate (DEHT) and bis(2-ethylhexyl) phthalate (DEHP). From dried and grounded leaves, 297 mg/kg of DEHT and 48 mg/kg of DEHP were isolated using column chromatography and semi-preparative high-performance liquid chromatography. The consumption of these plasticizers can lead to adverse effects on human health, such as reproductive and developmental toxicity, endocrine disruption, and cancer. This study highlights an alarming concern regarding the potential adverse effects on human health from plasticizers found in medicinal plants.
The main side effects this plant can have are shown in the list below.
- cancer
- developmental toxicity
- endocrine disruption
- immunosuppressive activity
What herbs are paired with Capparis spinosa?
This plant Capparis spinosa pairs most effectively with aromatic Mediterranean herbs like oregano, thyme, rosemary, and garlic to complement its sharp, salty, and slightly bitter flavor profile.
The caper buds release a pungent essence that is balanced by the earthy notes of dried thyme or the woodiness of rosemary. When used in brines or oils, adding fresh parsley or dill can brighten the heavy brine and add a refreshing top note to the dish. Garlic acts as a foundational aromatic that bridges the gap between the plant's acidity and the savory elements of a meal.
Using these combinations ensures that the intense character of the caper enhances rather than overwhelms the surrounding ingredients.