Prosopis

Other Names

Acacia cumanensisAcacia julifloraAcacia pallidaAcacia salinarumAdenanthera aculeataAfrican mesquiteAlgarobaAlgarobeiraAlgarobia julifloraAlgarrobilloAlgarrobillo espinosoAlgarroboAlgarrobo amarilloAlgarrobo americanoAlgarrobo blancoAlgarrobo dulceAlgarrobo moradoAlgarrobo negroAlgarrobo pálidoAlpatacoAmerican carobArgentine screwbeanBanniBarba de tigreBayaconda blancaBayahondaBayahondeBayarone françaisBilayati babulCarandáCashawCreeping mesquiteCují negroCují yaqueDesmanthus salinarumEspinilloGandaseinGeleGhafHoney mesquiteHuarangoIndian mesquiteIronwoodItínJammiJandJandiJantiKandiKhejriKhijadoKhijriKiaweLoongLunu andaraMesquiteMezquiteMimosa cinerariaMimosa julifloraMimosa pallidaMizquitlNandubayNeltumaNeltuma julifloraNeltuma pallidaPalo matacoPersian mesquiteProsópisProsopis abbreviataProsopis affinisProsopis africanaProsopis albaProsopis bracteolataProsopis chilensisProsopis cinerariaProsopis cumanensisProsopis farctaProsopis flexuosaProsopis glandulosaProsopis horridaProsopis inermisProsopis julifloraProsopis kuntzeiProsopis limensisProsopis pallidaProsopis pubescensProsopis reptansProsopis ruscifoliaProsopis spicataProsopis spicigeraProsopis strombuliferaProsopis tamarugoProsopis velutinaProsopis vidalianaPye bayawonnSamiSangriScrewbean mesquiteShamiStrombocarpaSumriTaantTamarugoTornilloTrupilloVanniVelvet mesquiteVinalWestern honey mesquite

Synopsis

Prosopis: A Comprehensive Encyclopedic Reference

1. Identity: Botanical Classification, Natural Sources, and Common Forms

1.1 Taxonomy and Nomenclature

Prosopis is a genus of flowering plants in the family Fabaceae, and the current circumscription of the genus contains three species found in northern Africa, the Middle East, and Central and South Asia. Previously it also contained around 40 species of spiny trees and shrubs found in subtropical and tropical regions of the Americas and Africa, now mostly placed in genera Strombocarpa and Neltuma. In common scientific and pharmacological literature, the genus Prosopis continues to be used as a collective designation covering the broader group of mesquite and related trees.

The Prosopis genus belongs to the Fabaceae or Leguminosae family and includes about 45 species of spiny trees and shrubs found in both subtropical and tropical areas of the world. Prosopis comprises 44 species, including Prosopis juliflora, Prosopis farcta, Prosopis velutina, Prosopis glandulosa, Prosopis laevigata, Prosopis pallida, and Prosopis cineraria; forty species of Prosopis come from North and South America, three are native to Asia, and one is from Africa.

Prosopis is mainly distributed in arid, semiarid, tropical, and subtropical countries, such as the United States, India, Argentina, Chile, Kenya, and Pakistan. In South America, Argentina has the most varied Prosopis, with 29 species of 14 endemic taxa. Prosopis grows widely from the southwestern part of the United States to Argentinean Patagonia, which is an important characteristic of the Monte and Chaco desert region in Argentina from Salta to Chubut provinces.

Species of greatest dietary supplement and pharmacological relevance include:

Prosopis juliflora (Sw.) DC. — Mesquite; invasive pantropical; widely studied pharmacologically; known locally as "Vilayati Babul" in India and "Algaroba" in Brazil.
Prosopis glandulosa Torr. — Honey Mesquite; native to southwestern North America; dried ground pods marketed as dietary supplement.
Prosopis cineraria (L.) Druce — Khejri or "Wonder Tree"; native to the Indian subcontinent and Arabian Peninsula; known as "the king of the desert" because it provides food, feed, and medicinal value, and is also named "Kalpataru."
Prosopis alba Griseb. — White Carob or Algarrobo Blanco; native to Argentina and neighboring countries; pods widely used for flour.
Prosopis farcta (Banks & Sol.) J.F.Macbr. — Syrian Mesquite; native to the Middle East and Central Asia; used in folk medicine across Iran, Palestine, and surrounding regions.
Prosopis africana (Guill. & Perr.) Taub. — African Mesquite; native to sub-Saharan Africa.
Prosopis nigra (Griseb.) Hieron. — Black Carob or Algarrobo Negro; native to South America.
Prosopis pallida (Humb. & Bonpl. ex Willd.) Kunth — Peruvian Mesquite.

The ecological value of Prosopis is due to their resistance to heat, drought, salinity, and alkalinity, while Prosopis can also promote nitrogen fixation to stabilize and improve the soil. They often thrive in arid soil and are resistant to drought, on occasion developing extremely deep root systems; their wood is usually hard, dense and durable, and their fruits are pods that may contain large amounts of sugar.

1.2 Common Forms and Preparations

Prosopis pods may be used as dietary supplements for people and animals; the pods' high nutritional value has demonstrated their potential for producing nutrient-dense goods such as juice, wine, gum, powder, essential oils, and drinks.

The principal commercial and research forms include:

Pod flour / mesquite flour: Whole ripe pods of the mesquite are ground to produce flour, known as mesquite or carob flour, characterized by its brown color and coffee-like aroma. As for its use in human food, the mature seeds and pods are used to obtain a gluten-free flour added as a supplement in baking corn and wheat products; this flour is rich in fiber, protein, and minerals and low in fat.
Mesquite gum (Prosopis gum): Mesquite gum is an exudate gum obtained from mesquite trees (Prosopis sp.); main constituents of this gum are D-galactose and L-arabinose along with trace amounts of D-mannose, D-glucuronate, and D-xylose.
Pod-derived capsules and ground powders: Commercial products such as Diavite™ consist solely of the dried and ground pods of Prosopis glandulosa (Torr.) [Fabaceae] and are marketed as a food supplement with blood glucose and blood pressure stabilizing properties.
Plant extracts: Aqueous, methanolic, ethanolic, and ethyl acetate extracts of leaves, bark, roots, pods, and seeds are used across research settings and in folk preparations.
Traditional preparations: Traditionally, paste, gum, and smoke from leaves and pods are applied for anticancer, antidiabetic, anti-inflammatory, and antimicrobial purposes.

2. Traditional and Historical Use

2.1 The Americas

This plant has an essential place in the history of the first settlers. Since ancient times, people from the USA, Mexico, Peru, Bolivia, Chile, Paraguay, and Argentina have taken advantage of this tree for their survival.

The indigenous peoples of California and southwestern North America used parts of Prosopis glandulosa as a medicinal plant, food source, building and tools material, and fuel. The Cahuilla ate the blossoms and pods, which were ground into meal for cake. The Pueblo peoples of New Mexico used the seeds to produce mesquite flour for making traditional horno bread. This species, known as haas by the Seri people of northwestern Mexico, is very important for food and nonfood uses, and the Seris have specific names for various stages of the growth of the mesquite pod.

In South America, the mesocarp flour of Prosopis species plays a prominent role as a food resource in arid areas. In Argentina, Chile, Peru, and Bolivia, species including P. alba, P. nigra, P. flexuosa, and P. pallida have long served as foundational nutritional and medicinal resources for Indigenous communities across Patagonia, the Gran Chaco, and Andean valleys.

2.2 The Indian Subcontinent and Arabia

Prosopis cineraria, commonly known as Khejri, is considered an important herbal plant due to its various health benefits. It belongs to the cosmopolitan genus Prosopis, subfamily Mimosaceae, tribe Leguminosae. The tree grows in dry and arid regions and is also known as the "Wonder tree" or "Golden tree" of the Indian desert, with the name "Kalpataru" meaning "King of the desert." It plays an important role as folk medicine in the indigenous system of medicine for several health problems.

Prosopis cineraria is extensively used in traditional medicine to cure many diseases such as leprosy, dysentery, asthma, leucoderma, dyspepsia, and earache. In Indian Ayurvedic and folk medicine traditions, the bark was used for respiratory ailments, the flowers to support female reproductive health, and the dry pods for protein nutrition. Prosopis cineraria is renowned for its diverse medicinal properties, attributed to various phytochemicals found in its roots, leaves, stems, and flowers; significant components include alkaloids, fatty acids, glycosides, and phenolic acid derivatives, contributing to the tree's therapeutic effects.

In the Arabian Peninsula, P. cineraria and P. farcta have been used in traditional medicine. Prosopis farcta has been used ethnobotanically in Iran for preventing nasal bleeding.

2.3 Africa

Members of the Prosopis genus are native to America, Africa, and Asia and have long been used in traditional medicine. In sub-Saharan Africa, Prosopis africana pods and bark have been employed in ethnomedicine for conditions including infections and metabolic disorders, while Prosopis juliflora, introduced during the 20th century to combat desertification in East Africa, has been adopted into local food and medicinal practices.

2.4 Overview of Traditional Therapeutic Uses

Species belonging to the Prosopis genus have been traditionally used for the treatment of asthma, birth/postpartum pains, callouses, conjunctivitis, diabetes, diarrhea, expectorant uses, fever, flu, lactation support, liver infection, malaria, otitis, pain, pediculosis, rheumatism, scabies, skin inflammations, spasm, stomach ache, and removal of bladder and pancreas stones, among other applications.

Prosopis rind, flowers, leaves, and pods are used in traditional medicine; in the case of the pods, beyond their properties as sedative and anti-inflammatory, they have been a source of food to humans and animals.

3. Key Constituents and Active Compounds

3.1 Overview of Phytochemical Classes

Prosopis contains numerous phytochemical constituents, including carbohydrates, proteins, fatty acids, minerals, and vitamins, while varieties of phenolic compounds have also been identified from different parts of Prosopis.

3.2 Phenolic Compounds and Flavonoids

Flavonoids (especially C-glycosyl flavonoids), tannins, catechin, 4′-O-methyl-gallocatechin, mesquitol, and quercetin O-glycosides are significant phenolic contents in Prosopis.

The phytochemical composition of Prosopis plants, namely their content of C-glycosyl flavones such as schaftoside, isoschaftoside, vicenin II, vitexin, and isovitexin, has been increasingly correlated with the observed biological effects.

HPLC-MS/MS analysis of Chilean Prosopis mesocarp flour allowed the tentative identification of eight anthocyanins and 13 phenolic compounds including flavonol glycosides, C-glycosyl flavones, and ellagic acid derivatives.

Chemical investigation of ethyl acetate extracts of the roots and stem bark of Prosopis juliflora led to the isolation of a new flavonoid, prosojuliflavone, and a new natural indole alkaloid dimer, along with eight known compounds including three flavonoids — vitexin, a mixture of vitexin and isovitexin, and 4′-O-methyl-ent-gallocatechin — two indole alkaloids N-acetyltryptamine and tryptamine, a disaccharide sucrose, and two monoglycerides.

3.3 Alkaloids

Prosopis juliflora (Sw.) contains many alkaloids such as juliflorine, julifloricine, julifloridine, juliprosine, juliprosinine, and juliflorinine, which are found to be responsible for the biological activity; the novel alkaloid julifloravizole with broad-spectrum antifungal activity against species of Fusarium, Drechslera, and Alternaria was also reported from the leaves.

Leaves of P. juliflora contain alkaloids such as tryptamine, piperidine, phenethylamine, and juliprosopine, which have antifungal and plant-growth-inhibiting properties.

Alkaloids occur mainly in the leaves, which are not used for human nutrition but as food for domestic animals; piperidine alkaloids, tryptamine, tyramine, and β-phenethylamine were isolated and identified from several species.

3.4 Polysaccharides and Gums

Mesquite gum is an exudate gum obtained from mesquite trees; main constituents are D-galactose and L-arabinose along with trace amounts of D-mannose, D-glucuronate, and D-xylose; it also contains protein in its chemical structure; chemically, it is similar to gum arabic, making it a competent substitute for various applications.

The main components of carbohydrates in Prosopis are galactose and mannose, while Prosopis also contains minor amounts of glucose and arabinose; in Prosopis flexuosa seed endosperm, galactomannan is the major polysaccharide (about 85% w/w of galactose plus mannose).

Prosopis gum is a great source of dietary fiber due to its low viscosity, which is widely used in producing fiber-fortified food products; the low viscosity of complex carbohydrates is very much suitable for its use as a dietary fiber source.

3.5 Proteins and Amino Acids

The raw seeds of Prosopis were found to comprise 11% moisture content and 89% dry matter (including 39% protein, 4.5% fat, 18.5% carbohydrates, and 4% ash).

Mesquite seed flour is rich in fiber (7.73 g/100 g) and protein (36.51 g/100 g), with valine as the only limiting amino acid; total phenolic compound contents in raw and extruded seed flour were 6.68 and 6.46 mg of gallic acid equivalents/g, respectively.

The protein content of mesquite protein concentrate was found to be 68%; however, mesquite covers the requirements of essential amino acids, surpassing 31% of the protein required in adults, except for cysteine sulfur amino acids and aromatic amino acids.

3.6 Other Constituents

Fatty acids, tannins, alkaloids, flavonoids, and glycosides were the major phytochemical compounds studied from Prosopis cineraria. Additional steroids, including stigmasterol, campesterol, and sitosterol, have been documented in the literature. These metabolites include fatty acids, proteins, carbohydrates, saponins, tannins, alkaloids, and C-glycosyl flavones, which exhibit pharmacological effects such as pain relief, anti-tumor, and antimicrobial activities.

3.7 Established Mechanisms of Action

Components of Prosopis such as flavonoids, tannins, alkaloids, quinones, and phenolic compounds demonstrate potentials in various biofunctions, including analgesic, anthelmintic, antibiotic, antiemetic, antioxidant, antimalarial, antiprotozoal, antipustule, and antiulcer activities; enhancement of H⁺/K⁺ ATPases; oral disinfection; and probiotic and nutritional effects.

The compound juliflorine has been proposed to provide effects relevant to Alzheimer's disease by inhibiting acetylcholinesterase at cholinergic brain synapses. This mechanism was detailed in research published in Biochemical and Biophysical Research Communications (2005), which described juliflorine as a potent natural peripheral anionic-site-binding inhibitor of acetylcholinesterase with calcium-channel blocking potential.

The spasmolytic, bronchodilator, and vasodilator properties of methanolic extract from the stem bark of Prosopis cineraria have been determined in preclinical study; blockade of Ca²⁺ channels may mediate the bronchodilator and vasodilator activities.

Scientific investigations have confirmed pharmacological properties including antioxidant, antimicrobial, anti-inflammatory, antidiabetic, hepatoprotective, and anticancer activities; these properties are attributed to the plant's ability to scavenge free radicals, inhibit microbial growth, modulate inflammatory responses, regulate blood glucose levels, and protect the liver.

4. Scientific Evidence by Area of Use

4.1 Metabolic Health: Blood Glucose Regulation and Antidiabetic Effects

The antidiabetic potential of multiple Prosopis species has been investigated in a range of in vitro, in vivo (animal), and limited human or near-clinical contexts. The overall body of evidence at this time is primarily preclinical.

In Vitro Evidence

Using streptozotocin (STZ)-induced cytotoxicity in β-TC3 cells as an assay model, a bioassay-guided fractionation study was employed to isolate and characterize the potential antidiabetic principles of roots of Prosopis farcta. When cell viability under STZ was reduced to 49.8 ± 4%, treatment with the active compound at the concentration of 0.5 mg/mL either as a co-administration or a pre-treatment improved the viability to 93 ± 1.9% and 91.5 ± 7%, respectively; the reduction in the mitochondrial membrane potential by STZ was similarly recovered to 84.5 ± 4.3% (co-administration) and 88 ± 5.5% (pre-treatment) by the active fraction.

A separate in vitro investigation of P. farcta roots evaluated glucose metabolism in a hepatocellular carcinoma cell line (HepG2) and glucose diffusion across a dialysis membrane. P. farcta extracts did not demonstrate significant inhibitory effects on glucose movement into the external solution across the dialysis membrane compared with control conditions; these results suggest that antidiabetic actions of P. farcta do not involve intestinal absorption.

Research on Prosopis cineraria pods evaluated dual inhibition of DPP-4 and cholinesterase enzymes. The study was aimed at evaluating the inhibition potential of an ethanolic extract of Prosopis cineraria pods against DPP-4 and cholinesterase enzymes by in vitro, in vivo, and in silico assessments; the study included in vivo studies on a diabetes-induced rat model and in vitro studies through a DPP-4 enzyme assay. The extract showed 64.8% maximum inhibition of DPP-4, 34.91% inhibition of AChE, and 74.35% inhibition of BuChE. These are in vitro figures and do not directly indicate clinical efficacy.

In Vivo (Animal) Evidence

A published study in the Journal of Ethnopharmacology (2011) examined P. glandulosa (Diavite™) in rat models. Male Wistar rats were rendered (a) type 1 diabetic after an intraperitoneal injection of STZ (40 mg/kg) and (b) insulin resistant after a 16-week high-caloric diet (diet-induced obesity, DIO); Zucker fa/fa ZDF rats were also used in a pilot study; half of each group of animals was placed on Prosopis glandulosa treatment (100 mg/kg/day) for 8 weeks.

A subsequent study from the same research group examined cardioprotective and antihypertensive effects. Male Wistar rats were rendered either pre-diabetic (DIO) or hypertensive (high-fat diet: HFD); DIO animals were treated with P. glandulosa (100 mg/kg/day for the last eight weeks of a 16-week period) and compared to age-matched controls; hearts were perfused ex vivo to determine infarct size. In the HFD model, P. glandulosa treatment both prevented and corrected the development of hypertension; the study concluded that P. glandulosa was cardioprotective and infarct-sparing as well as anti-hypertensive without affecting body weight or intra-peritoneal fat depots; changes in the PI-3-kinase/PKB/Akt pathway may be causal to protection, and ingestion of P. glandulosa alleviated water retention.

An in vivo study with Prosopis africana fruit extracts used sixty male Wistar rats. Groups II–X were given a single intraperitoneal dose of 40 mg/kg freshly prepared STZ injection; groups III–V and VII–IX were treated with 50, 100, and 200 mg/kg of coconut water extract and aqueous extract of the fruit, respectively; group X was treated with 21.4 mg/kg of metformin; treatment lasted for 14 days.

A recent in vivo study found that a decoction of flowers and branches of Prosopis exhibits antidiabetic properties, and its leaves have antibacterial, antihyperglycemic, antioxidant, and antihyperlipidemic effects.

Evidence strength: Antidiabetic evidence for Prosopis spp. is primarily in vitro and in rodent models. The market has seen a host of untested remedies advertised as antidiabetic agents; the antidiabetic claims made for commercial products are described as anecdotal and lacking scientific evidence in the primary literature. No published, peer-reviewed randomized controlled trials in humans have been identified for antidiabetic endpoints in this genus as of the current literature review.

4.2 Antimicrobial Activity

The agar well diffusion method has been used to estimate antimicrobial properties of extracts of different parts of Prosopis cineraria; for pods, methanol extract can inhibit E. coli, P. aeruginosa, S. typhi, and K. pneumoniae, but chloroform and aqueous extracts cannot inhibit those microorganisms; for stem bark, methanolic and aqueous extracts demonstrated moderate antibacterial capacity against the same organisms, related to the flavonoid and tannin content.

Several studies have reported the pharmaceutical activities of P. juliflora leaves, including antibacterial, antifungal, antipyretic, antiulcer, and antiprotozoal activities. Fatty acids and a group of pentacyclic triterpenes were identified as responsible compounds for antibacterial activities.

Evidence strength: Antimicrobial data is predominantly from in vitro disk diffusion assays. There are no published clinical trials evaluating Prosopis for human infectious disease endpoints.

4.3 Antioxidant Activity

Samples of P. chilensis flour exhibited a total phenolic content ranging between 0.82–2.57 g gallic acid equivalents/100 g fresh flour weight; the highest antioxidant activity, measured by the DPPH assay, was observed for samples from the Huasco valley; the antioxidant activity and the phenolic composition in the flour suggest that this ancient South American resource may have potential as a functional food.

An in vivo study with a zebrafish model revealed that pod extracts resulted in lower reactive oxygen species generation (up to 30%) compared to the control group.

Overall, Prosopis has the potential to be a source of natural antioxidants for food supplements or pharmaceutical industry formulations and can be used in treating inflammatory diseases, cancer, and diabetes.

Evidence strength: Antioxidant evidence is robust at the in vitro level and supported by zebrafish (in vivo) data. Clinical data in humans on antioxidant biomarkers is lacking.

4.4 Anti-inflammatory Effects

Administration of extracts (200 and 400 mg/kg) can decrease the levels of mitochondrial lipid peroxidation and liver weight in a dose-dependent manner; the spasmolytic, bronchodilator, and vasodilator properties of methanolic extract from the stem bark of Prosopis cineraria were determined in a preclinical study; blockade of Ca²⁺ channels may mediate the bronchodilator and vasodilator activities.

P. cineraria contains alkaloids with good anesthetic and spasmolytic activity, saponins that can boost the immune system and lower cholesterol, and tannins that produce anthelmintic activity.

Evidence strength: Anti-inflammatory evidence is limited to preclinical animal models and in vitro assays. No clinical trials in humans on inflammatory endpoints have been identified.

4.5 Anticancer / Cytotoxic Activity

Studies have reported the potency of P. juliflora extract in inhibiting cancer cell growth; recent studies have shown variant cytotoxic potencies.

Preliminary studies suggest that the phytochemicals in P. cineraria can inhibit cancer cell proliferation; compounds such as tannins, flavonoids, and saponins have shown cytotoxic effects against various cancer cell lines — including breast, colon, and lung cancers — through mechanisms such as apoptosis induction, angiogenesis inhibition, and cell cycle disruption; while promising, further research is needed to identify specific bioactive compounds and their molecular targets.

P. cineraria's leaves contain an active bioactive compound 'vitexin' that demonstrates antileukemic properties, which may serve as a natural and safe treatment for leukemia. This evidence is preliminary.

Evidence strength: All anticancer evidence for Prosopis is preclinical — derived from cell-line cytotoxicity assays. No clinical or animal tumor model data have been identified in the peer-reviewed literature reviewed here.

4.6 Neurological Applications (Acetylcholinesterase Inhibition)

The alkaloid juliflorine has attracted interest for Alzheimer's disease research. Juliflorine was characterized as a potent natural peripheral anionic-site-binding inhibitor of acetylcholinesterase with calcium-channel blocking potential, representing a potential candidate for Alzheimer's disease therapy. This research, published in Biochemical and Biophysical Research Communications in 2005, was in vitro in nature. The compound juliflorine has been proposed to provide effects relevant to Alzheimer's disease by inhibiting acetylcholinesterase at cholinergic brain synapses.

Evidence strength: In vitro only. No animal model data or human trials on neurological outcomes from Prosopis-derived juliflorine have been confirmed from the reviewed sources.

4.7 Cardiovascular and Antihypertensive Effects

P. glandulosa pod preparations are marketed as a food supplement with blood glucose-stabilising and anti-hypertensive properties in South Africa. The scientific evidence supporting this comes from rodent studies. Results from rat studies indicated water retention, possibly coupled to vasoconstriction in HFD animals, while ingestion of P. glandulosa alleviated both; the conclusion was that treatment of pre-diabetes, type 2 diabetes, or hypertension with P. glandulosa poses possible beneficial health effects.

Evidence strength: Rat model data only. No human clinical trial evidence on cardiovascular endpoints has been identified.

4.8 Anthelmintic Activity

Various extracts of Prosopis displayed a wide range of biological properties, including anthelmintic activity. Components of Prosopis such as flavonoids, tannins, alkaloids, quinones, and phenolic compounds demonstrate potential in anthelmintic activities.

Evidence strength: In vitro and limited animal model data only.

4.9 Wound Healing

Prosopis cineraria is used traditionally for swift healing of cutaneous wounds; oxidative stress and inflammation are the critical factors attributed to delay in the wound repair process. Various bioactive compounds of P. cineraria through chemical analysis are found to have antioxidant, anti-diabetic, and antibacterial properties with notable wound-healing abilities.

Evidence strength: Primarily traditional use and in vitro data. No controlled clinical wound healing trials identified.

4.10 Nutritional Applications and Dietary Fiber

Prosopis has the potential to be an ideal diet that contains abundant dietary fiber, minerals, galactomannans, and low-fat content. Prosopis alba seed flour showed high levels of proteins, minerals, fiber, and phenolic compounds, mainly flavones, with low content of total carbohydrates and fats. Pod flour of Prosopis laevigata is a good source of lysine, sulfur-containing amino acids, and total phenolic compounds, with higher radical scavenging capacity than soybeans and common beans.

Viscosity values of mesquite gum solution are somewhat lower than gum arabic, which opens the door for its application as dietary fiber in various food products; mesquite gum has several functional properties that make it a functional hydrocolloid; it has appreciable emulsifying and encapsulation capacity for various food components.

5. Body Systems and Health Areas of Association

Endocrine/Metabolic system: Blood glucose regulation, insulin resistance, lipid profile modulation (preclinical evidence).
Cardiovascular system: Antihypertensive and cardioprotective effects in rodent models; involvement of PI-3-kinase/PKB/Akt signaling.
Gastrointestinal system: Prosopis can help alleviate issues such as leprosy, dysentery, bronchitis, asthma, leukoderma, hemorrhoids, muscular tremors, and mental confusion in traditional use; high fiber content supports digestive health.
Immune and inflammatory system: Traditional use for skin inflammations, rheumatism, and fever; in vitro anti-inflammatory and antioxidant data.
Respiratory system: Traditional use for asthma and bronchitis; preclinical bronchodilator and spasmolytic activity from P. cineraria bark.
Central nervous system: Acetylcholinesterase inhibition by juliflorine (in vitro only); traditional use for "mental confusion" and muscular disorders.
Dermatological system: Traditional use for leprosy, leukoderma, scabies, pediculosis, and wound healing; preliminary in vitro evidence.
Oncology (preclinical): In vitro cytotoxic activity against breast, colon, lung, and leukemia cell lines.
Nutritional/Food supplementation: Pod flour and gum as functional food ingredients providing fiber, protein, minerals, and phenolic antioxidants.

6. Dosage Forms and Dosages Reported in Studies

No universally established clinical dosage exists for any Prosopis preparation. The following dosages are those reported specifically in the referenced research literature:

P. glandulosa pod powder (rat studies): DIO animals were treated with P. glandulosa at 100 mg/kg/day for the last eight weeks of a 16-week period. This was replicated across two published studies from the Stellenbosch University group and represents the best-documented dosage in the preclinical literature.
P. africana fruit extract (rat study): Groups were treated with 50, 100, and 200 mg/kg of coconut water extract and aqueous extract of the fruit.
P. cineraria ethanolic extract pods (in vitro antidiabetic assay): The active compound at the concentration of 0.5 mg/mL was used as co-administration or pretreatment.
P. cineraria bark extract (in vivo anti-inflammatory/antioxidant, rat): Administration of the extract at 200 and 400 mg/kg decreased the levels of mitochondrial lipid peroxidation and liver weight in a dose-dependent manner.
P. juliflora alkaloid fraction (in vitro neurotoxicity): TAE (30 µg/mL) and F32 (7.5 µg/mL) induced reduction in ATP levels and changes in mitochondrial membrane potential at 12-hour exposure.
Commercial supplement (South Africa): The commercial product Diavite™ consists solely of the dried and ground pods of Prosopis glandulosa and is marketed as a food supplement; no specific human dosage appears in the peer-reviewed literature reviewed here.

Pod flour used as a food ingredient has been incorporated into baked goods and beverages in quantities reflecting normal food use. No human clinical dose-ranging studies have been published.

7. Safety Considerations and Interactions

7.1 Piperidine Alkaloid Neurotoxicity

The most extensively documented safety concern with Prosopis, particularly P. juliflora, involves its piperidine alkaloid content.

Prosopis juliflora was introduced into northeastern Brazil in the 1940s as an alternative for animal nutrition; however, the consumption of P. juliflora as the main or sole source of food causes an illness in animals known locally as "cara torta" disease. Cattle and goats experimentally intoxicated present neurotoxic damage in the central nervous system; histologic lesions were mainly characterized by vacuolation and loss of neurons in trigeminal motor nuclei. Furthermore, mitochondrial damage in neurons and gliosis was reported in trigeminal nuclei of intoxicated cattle; studies using neural cell cultures reproduced the main cellular alterations and contributed to understanding the mechanism of action of piperidine alkaloids, the main neurotoxic compounds in P. juliflora leaves and pods.

These alkaloids, particularly juliprosopine and juliprosin, are neurotoxic and can lead to neurological disorders by affecting neurons and glial cells. Piperidine alkaloids can give an acute toxic response to adult livestock animals by causing musculoskeletal deformities; this acute response can be seen through symptoms of frequent urination and defecation, muscle weakness, tachycardia, ataxia, muscular weakness, collapse, and death due to respiratory failure.

Critically, alkaloids occur mainly in the leaves, which are not used for human nutrition but as food for domestic animals. Food supplements derived from pods and pod flour of South American species such as P. alba and P. chilensis have shown bioactivity studies mainly in the antioxidant, anti-inflammatory, and enzyme inhibition domains; the products showed no toxicity or mutagenic effect.

7.2 Heavy Metal Accumulation Potential

Monitoring the content of toxic elements is one of the most important aspects to consider for medicinal plants' safety before evaluating pharmaceutical use; one study investigated the level of essential and toxic elements in the leaves, branches, and stem of Prosopis cineraria to assess its health risk. Prosopis species are known phytoremediators; plants grown in contaminated soils may accumulate heavy metals, making source and quality control important for any supplement preparation.

7.3 Acute Toxicity Data (Animal Models)

In an acute toxicity study, the ethanolic extract of P. juliflora was administered orally to rats at doses of 50, 100, 200, and 500 mg/kg; the results showed that the doses ranging from 50 to 200 mg/kg did not show any mortality, while 500 mg/kg showed 80% mortality after 72 hours; sub-acute toxicity was tested at a dose of 200 mg/kg/day for 30 days; hepatic and renal function tests did not show any significant changes in groups treated with the modified extract compared to control. These data apply to the specific extract preparation tested in that study and cannot be extrapolated directly to other preparations or to humans.

7.4 Invasive Species and Allelopathic Properties

Despite its number of uses, P. juliflora is known as a serious invasive weed in most parts of the world. Its allelopathic compounds — exuded from roots and leaves — are known to inhibit the germination and growth of neighboring plant species, a property relevant to ecological safety but also indicative of the chemical potency of the plant's secondary metabolites.

7.5 Interactions

No published peer-reviewed pharmacokinetic drug-interaction studies for Prosopis preparations in humans have been identified in the reviewed literature. The inhibition of DPP-4 by P. cineraria pod extracts demonstrated in vitro raises a theoretical concern for additive effects with DPP-4 inhibitor antidiabetic drugs (e.g., sitagliptin, saxagliptin), but this has not been studied in humans. Similarly, the hypoglycemic activity seen in rodent models suggests a theoretical additive risk with insulin or oral hypoglycemic agents, consistent with a caution observed across multiple botanical antidiabetics in the literature.

7.6 Abortifacient Activity

It has been reported that P. cineraria contains anti-inflammatory, anticonvulsant, antifungal, anticancer, antidiabetic, hypolipidemic, abortifacient, antioxidant, antimicrobial, and wound-healing properties. The abortifacient property attributed to this species in traditional literature is a notable safety signal requiring particular caution in pregnancy, though controlled data in humans are not available from the reviewed sources.

8. Summary of Evidence Strength

Across the areas reviewed, the evidence base for Prosopis as a dietary supplement or medicinal agent is at an early stage. Various in vitro and in vivo studies have revealed interesting antiplasmodial, antipyretic, anti-inflammatory, antimicrobial, anticancer, antidiabetic, and wound-healing effects. However, these findings originate largely from cell-culture and rodent experiments. The nutritional value of Prosopis pod flour — as a source of fiber, protein, minerals, and polyphenols — is the best-supported aspect of the genus from a functional food standpoint, supported by consistent chemical characterization across multiple species. Pharmacological claims, including antidiabetic, antihypertensive, and neuroprotective effects, remain to be validated in rigorous human clinical trials.

References

Health Conditions

Health conditions that Prosopis may help support.

No conditions available.

Body Systems

Body systems that Prosopis may help support.

No body systems available.