''Brosimum alicastrum'', commonly known as the breadnut or ramon, is a tree species in the family Moraceae of

flowering plant Flowering plants are plants that bear flowers and fruits, and form the clade Angiospermae (), commonly called angiosperms. The term "angiosperm" is derived from the Greek words ('container, vessel') and ('seed'), and refers to those plants t ...

s, whose other genera include figs and

mulberries ''Morus'', a genus of flowering plants in the family Moraceae, consists of diverse species of deciduous trees commonly known as mulberries, growing wild and under cultivation in many temperate world regions. Generally, the genus has 64 identif ...

. The plant is known by a range of names in indigenous Mesoamerican and other languages, including: ''ojoche, ojite, ojushte, ujushte, ujuxte, capomo, mojo, ox,

iximche Iximcheʼ () (or Iximché using Spanish orthography) is a Pre-Columbian Mesoamerican archaeological site in the western highlands of Guatemala. Iximche was the capital of the Late Postclassic Kaqchikel Maya kingdom from 1470 until its abandonm ...

, masica'' in Honduras, ''uje'' in the state of Michoacan Mexico, ''mojote'' in Jalisco, in Haitian Creole and ''chataigne'' in Trinidadian Creole. In the Caribbean coast of Colombia it is called ''guaímaro'' or ''guaymaro''. Two

subspecies In biological classification, subspecies is a rank below species, used for populations that live in different areas and vary in size, shape, or other physical characteristics ( morphology), but that can successfully interbreed. Not all specie ...

are commonly recognized: * ''B. a. alicastrum'' * ''B. a. bolivarense'' (Pittier) C.C.Berg

Description

''Brosimum alicastrum'' is a

monoecious Monoecy (; adj. monoecious ) is a sexual system in seed plants where separate male and female cones or flowers are present on the same plant. It is a monomorphic sexual system alongside gynomonoecy, andromonoecy and trimonoecy. Monoecy is ...

plant. Birds are responsible for the dispersion of the seeds. A tree can produce 150–180 kg of fruits per year. It stays productive for 120–150 years. The tree can grow up to 45 m (150 ft) in height and up to in diameter.Heuzé V., Thiollet H., Tran G., Hassoun P., Lebas F., 2018. Breadnut (Brosimum alicastrum). Feedipedia, a programme by INRA, CIRAD, AFZ and FAO. https://www.feedipedia.org/node/175 It starts producing flowers and fruits when the tree's trunk reaches high.

Distribution and habitat

This tree is found on the west coast of central Mexico and in southern Mexico (Yucatán, Campeche), Guatemala, El Salvador, the Caribbean, and the Amazon basin. Large stands occur in moist lowland tropical forests at elevation (especially 125–800 m), in humid areas with annual rainfall of 600–2000 mm , and average temperatures of 24 °C (75 °F).

History and culture

The breadnut fruit disperses on the ground at different times throughout its range. It has a large seed covered by a thin, citrus-flavored, orange-colored skin favored by a number of forest creatures. More importantly for humans, the large seed which is enveloped by the tasty skin is an edible "nut" that can be boiled or dried and ground into a meal for

porridge Porridge is a food made by heating or boiling ground, crushed or chopped starchy plants, typically grain, in milk or water. It is often cooked or served with added flavourings such as sugar, honey, (dried) fruit or syrup to make a sweet cereal, ...

flatbread A flatbread is a bread made with flour; water, milk, yogurt, or other liquid; and salt, and then thoroughly rolled into flattened dough. Many flatbreads are unleavened, although some are leavened, such as pizza and pita bread. Flatbreads r ...

. The name "breadnut" probably arose because the seeds can be ground to produce bread. Breadnut is nutritious and has value as a food source, and may have formed a part of the diet of the

pre-Columbian In the history of the Americas, the pre-Columbian era spans from the original settlement of North and South America in the Upper Paleolithic period through European colonization, which began with Christopher Columbus's voyage of 1492. Usually, ...

Maya of the lowlands region in

Mesoamerica Mesoamerica is a historical region and cultural area in southern North America and most of Central America. It extends from approximately central Mexico through Belize, Guatemala, El Salvador, Honduras, Nicaragua, and northern Costa Rica. Wit ...

,Flannery, Kent; Puleston, Dennis E. (1982), "The Role of Ramon in Maya Subsistence", Maya Subsistence: Studies in Memory of Dennis E. Puleston, Academic Press, pp. 353-366Harrison, Peter D.; Turner, B. L.; Puleston, Dennis E. (1978), "Terracing, Raised Fields, and Tree Cropping in the Maya Lowlands: A New Perspective on the Geography of Power", Pre-Hispanic Maya Agriculture, University of New Mexico Press, pp. 225-245 although to what extent has been a matter of some debate among historians and archaeologists: no verified remains or illustrations of the fruit have been found at any Mayan archaeological sites. Brosimum-alicastrum 4

It was planted by the

Maya civilization The Maya civilization () of the Mesoamerican people is known by its ancient temples and glyphs. Its Maya script is the most sophisticated and highly developed writing system in the pre-Columbian Americas. It is also noted for its art, ...

2000 years ago and it has been claimed in several publications by Dennis E. Puleston to have been a

staple food A staple food, food staple, or simply a staple, is a food that is eaten often and in such quantities that it constitutes a dominant portion of a standard Diet (nutrition), diet for a given person or group of people, supplying a large fraction of ...

in the Maya diet. Puleston demonstrated a strong correlation between ancient Maya settlement patterns and the distribution of relic stands of ramon trees. Other research has downplayed the ramon's significance. In the modern era, it has been marginalized as a source of nutrition and has often been characterized as a

famine food A famine food or poverty food is any inexpensive or readily available food used to nourish people in times of hunger and starvation, whether caused by extreme poverty, such as during economic depression or war, or by natural disasters such a ...

. The tree lends its name to the Maya archaeological sites of

Iximché Iximcheʼ () (or Iximché using Spanish orthography) is a Pre-Columbian Mesoamerican archaeological site in the western highlands of Guatemala. Iximche was the capital of the Late Postclassic Kaqchikel Maya kingdom from 1470 until its abandonm ...

and

Topoxte Topoxte () (or Topoxté in Spanish orthography) is a pre-Columbian Maya archaeological site in the Petén Basin in northern Guatemala with a long occupational history dating as far back as the Middle Preclassic.Pinto & Noriega 1995, pp.576–7. ...

, both in

Guatemala Guatemala ( ; ), officially the Republic of Guatemala ( es, República de Guatemala, links=no), is a country in Central America. It is bordered to the north and west by Mexico; to the northeast by Belize and the Caribbean; to the east by Hon ...

and Tamuin (reflecting the Maya origin of the Huastec peoples). It is one of the 20 dominant species of the Maya forest. Of the dominant species, it is the only one that is wind-pollinated. It is also found in traditional Maya

forest gardens A forest is an area of land dominated by trees. Hundreds of definitions of forest are used throughout the world, incorporating factors such as tree density, tree height, land use, legal standing, and ecological function. The United Nations' ...

Cultivation

A high density of seeds during the seedling offsets a reduced viability of the young plants and therefore enables a good yield. Seed storage is a common issue in breadnut production. Long storage adversely affects the germination rate, for example after three weeks it decreases by 10%. Refrigeration is not a solution as it risks killing the seeds.

Nutritional and culinary value

The breadnut is high in

fiber Fiber or fibre (from la, fibra, links=no) is a natural or artificial substance that is significantly longer than it is wide. Fibers are often used in the manufacture of other materials. The strongest engineering materials often incorporate ...

calcium Calcium is a chemical element with the symbol Ca and atomic number 20. As an alkaline earth metal, calcium is a reactive metal that forms a dark oxide-nitride layer when exposed to air. Its physical and chemical properties are most similar ...

potassium Potassium is the chemical element with the symbol K (from Neo-Latin '' kalium'') and atomic number19. Potassium is a silvery-white metal that is soft enough to be cut with a knife with little force. Potassium metal reacts rapidly with atmos ...

iron Iron () is a chemical element with symbol Fe (from la, ferrum) and atomic number 26. It is a metal that belongs to the first transition series and group 8 of the periodic table. It is, by mass, the most common element on Earth, right in ...

zinc Zinc is a chemical element with the symbol Zn and atomic number 30. Zinc is a slightly brittle metal at room temperature and has a shiny-greyish appearance when oxidation is removed. It is the first element in group 12 (IIB) of the periodi ...

protein Proteins are large biomolecules and macromolecules that comprise one or more long chains of amino acid residues. Proteins perform a vast array of functions within organisms, including catalysing metabolic reactions, DNA replication, res ...

and B vitamins. It has a low

glycemic index The glycemic (glycaemic) index (GI; ) is a number from 0 to 100 assigned to a food, with pure glucose arbitrarily given the value of 100, which represents the relative rise in the blood glucose level two hours after consuming that food. The GI of ...

(<50) and is very high in

antioxidant Antioxidants are compounds that inhibit oxidation, a chemical reaction that can produce free radicals. This can lead to polymerization and other chain reactions. They are frequently added to industrial products, such as fuels and lubrica ...

s. The fresh seeds can be cooked and eaten or can be set out to dry in the sun and eaten later. Stewed, the nut tastes like mashed potato; roasted, it tastes like chocolate or coffee. It can be prepared in numerous other dishes. In Petén,

, the breadnut is cultivated for exportation and local consumption as powder, for hot beverages, and bread.

Other uses

Breadnut leaves are commonly used as

forage Forage is a plant material (mainly plant leaves and stems) eaten by grazing livestock. Historically, the term ''forage'' has meant only plants eaten by the animals directly as pasture, crop residue, or immature cereal crops, but it is also use ...

for livestock during the dry season in Central America. The fruits and seeds are also used to feed all kinds of animals.

Carbon farming applications

''Brosimum alicastrum'' can be used for carbon farming as a nut crop or

fodder Fodder (), also called provender (), is any agricultural foodstuff used specifically to feed domesticated livestock, such as cattle, rabbits, sheep, horses, chickens and pigs. "Fodder" refers particularly to food given to the animals (includ ...

. It is an oxalogene tree. It can therefore undertake a bacterial-fungal endosymbiosis which assists the oxalate-carbonate pathway (OCP) and especially the chemical reaction of

biomineralization Biomineralization, also written biomineralisation, is the process by which living organisms produce minerals, often to harden or stiffen existing tissues. Such tissues are called mineralized tissues. It is an extremely widespread phenomenon; ...

, and in this case biocalcification (to produce CaCO₃ from CO₂ and to store it in the soils). This tree would therefore act as a carbon sink, while providing resources for both humans and animals. This was first shown by a biogeochemist Eric Verrechia, researcher at

University of Lausanne The University of Lausanne (UNIL; french: links=no, Université de Lausanne) in Lausanne, Switzerland was founded in 1537 as a school of Protestant theology, before being made a university in 1890. The university is the second oldest in Switzer ...

in 2006.

Soil restoration

''Brosimum alicastrum'' can be used to restore damaged soils. It can prevent

erosion Erosion is the action of surface processes (such as water flow or wind) that removes soil, rock, or dissolved material from one location on the Earth's crust, and then transports it to another location where it is deposited. Erosion is d ...

and act as a wind barrier. The tree tolerates poor, damaged, dried or salty soils and it requires a few inputs after its plantation. Furthermore, its oxalogenic activity increases the pH and the amount of organic matter in the soil once well implemented in the agricultural system. This leads to an increased fertility thanks to a buffer effect. Some research projects are currently on-going to develop this crop in its current distribution area.Forêts Communes. (2021). Le programme –. Consulted 10 November 2021, on the website https://biomimicry.eu/forets/le-programme/

References

External links

* *
Maya Nut Institute

Crop of the Week: Maya Nut (''Brosimum alicastrum'', Moraceae)
{{Taxonbar, from=Q990886 Agriculture in Mesoamerica alicastrum Edible nuts and seeds Perennial protein crops Natural history of Mesoamerica Trees of Guatemala Trees of Mexico Trees of Peru Taxa named by Olof Swartz