Wattleseed

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Roasted and ground seeds of the elegant wattle, Acacia victoriae CSIRO ScienceImage 3155 Roasted and Ground Seeds of the Elegant Wattle Acacia victoriae.jpg
Roasted and ground seeds of the elegant wattle, Acacia victoriae
Steamed apple charlotte with wattleseed ice cream and a creme anglaise Wattleseed icecream.jpg
Steamed apple charlotte with wattleseed ice cream and a crème anglaise

Wattleseeds are the edible seeds from any of 120 species of Australian Acacia that were traditionally used as food by Aboriginal Australians, [1] and eaten either green (and cooked) or dried (and milled to a flour) to make a type of bush bread. Acacia murrayana and A. victoriae have been studied as candidates for commercial production. [1]

Contents

Acacia seed flour has recently gained popularity in Australia due to its high nutritional content, hardiness, and low toxicity. Due to its low glycemic index, it is suitable for incorporation into diabetic foods. It is used due to its chocolate, coffee, hazelnut flavour profile. It is added to ice cream, granola, chocolate, bread, and used by chefs to enhance sauces and dairy desserts.

History

Wattleseeds were a relatively recent addition to Aboriginal Australian diets with specialized seed grinders first dated to 1000 years ago. [2] Many species require pre-treatment of seeds through parching at high temperatures, soaking, or cracking using seed grinders. [3] Following the colonization of Australia, consumption of wattleseed decreased but was not eliminated. [2] As early as 1814, Australian Acacia species were recognized for their tannin content and developed into plantation crops across the British Empire. [4] Several species, including Acacia colei and A. mearnsii , have been maintained for their wattleseed in Niger and South Africa respectively. [5]

Cultivation

Wattleseed Acacia are perennial woody crops of varying age and size with some reaching 4m tall and 5m across. [4] Their large size and multiple stems is an impediment to harvesting and has resulted in the development of several strategies of collecting seed pods, including 'finger stripping' of pods off of foliage, 'butt shaking' of the tree to dislodge pods, and whole biomass harvesting. [6] The large number of species of Acacia has been seen as beneficial for the development of wattleseed as a commercial crop.

Trees can be arranged as either alley or phase arrangements for plantations, but Acacia have also seen use as windbreaks and groundcover for high salinity areas. [6] Preparation can involve deep ripping of the soil to allow for water to soak as well as species specific pre-treatments. [7] Water stress has the possibility to induce flowering and increase seed production with sufficient nutrient availability. The longevity of trees depends on spacing, climate, and species. [4] In A. victoriae, trees do not begin flowering until 2–4 years old. [7]

See also

Related Research Articles

<i>Acacia sensu lato</i> Genus of legumes

Acacia s.l., known commonly as mimosa, acacia, thorntree or wattle, is a polyphyletic genus of shrubs and trees belonging to the subfamily Mimosoideae of the family Fabaceae. It was described by the Swedish botanist Carl Linnaeus in 1773 based on the African species Acacia nilotica. Many non-Australian species tend to be thorny, whereas the majority of Australian acacias are not. All species are pod-bearing, with sap and leaves often bearing large amounts of tannins and condensed tannins that historically found use as pharmaceuticals and preservatives.

<i>Acacia pycnantha</i> Golden wattle of southeastern Australia

Acacia pycnantha, most commonly known as the golden wattle, is a tree of the family Fabaceae native to southeastern Australia. It grows to a height of 8 m (26 ft) and has phyllodes instead of true leaves. Sickle-shaped, these are between 9 and 15 cm long, and 1–3.5 cm wide. The profuse fragrant, golden flowers appear in late winter and spring, followed by long seed pods. Plants are cross-pollinated by several species of honeyeater and thornbill, which visit nectaries on the phyllodes and brush against flowers, transferring pollen between them. An understorey plant in eucalyptus forest, it is found from southern New South Wales and the Australian Capital Territory, through Victoria and into southeastern South Australia.

<i>Acacia cyclops</i> Species of plant

Acacia cyclops, commonly known as coastal wattle, cyclops wattle, one-eyed wattle, red-eyed wattle, redwreath acacia, western coastal wattle, rooikrans, rooikrans acacia, is a coastal shrub or small tree in the family Fabaceae. Native to Australia, it is distributed along the west coast of Western Australia as far north as Leeman, and along the south coast into South Australia. The Noongar peoples of Western Australia know the plant as wilyawa or woolya wah.

<i>Acacia victoriae</i> Species of plant

Acacia victoriae, commonly known as gundabluie or bardi bush, is a shrub-like tree native to Australia. Subspecies: A. victoriae subsp. arida Pedley

<i>Acacia murrayana</i> Species of legume

Acacia murrayana is a tree in the family Fabaceae. It has numerous common names, including sandplain wattle, Murray's wattle, fire wattle, colony wattle and powder bark wattle that is endemic to arid areas in every mainland State except Victoria.

<i>Acacia ligulata</i> Species of plant

Acacia ligulata is a species of Acacia, a dense shrub widespread in all states of mainland Australia. It is not considered rare or endangered. Its common names include sandhill wattle, umbrella bush, marpoo, dune wattle, small coobah, wirra, and watarrka.

<i>Acacia</i> Genus of plants

Acacia, commonly known as the wattles or acacias, is a large genus of shrubs and trees in the subfamily Mimosoideae of the pea family Fabaceae. Initially, it comprised a group of plant species native to Africa and Australasia. The genus name is Neo-Latin, borrowed from the Greek ἀκακία, a term used by Dioscorides for a preparation extracted from the leaves and fruit pods of Vachellia nilotica, the original type of the genus. In his Pinax (1623), Gaspard Bauhin mentioned the Greek ἀκακία from Dioscorides as the origin of the Latin name.

<span class="mw-page-title-main">Bush bread</span> Seedcakes baked by Aboriginal Australians

Bush bread, or seedcakes, refers to the bread made by Aboriginal Australians by crushing seeds into a dough that is then baked. The bread is high in protein and carbohydrate, and forms part of a balanced traditional diet. It is also sometimes referred to as damper, although damper is more commonly used to describe the bread made by non-Indigenous people.

<i>Acacia mearnsii</i> Species of flowering plant

Acacia mearnsii, commonly known as black wattle, late black wattle or green wattle, is a species of flowering plant in the family Fabaceae and is endemic to south-eastern Australia. It is usually an erect tree with smooth bark, bipinnate leaves and spherical heads of fragrant pale yellow or cream-coloured flowers followed by black to reddish brown pods. In some other parts of the world, it is regarded as an invasive species.

<i>Acacia implexa</i> Species of plant

Acacia implexa, commonly known as lightwood or hickory wattle, is a fast-growing Australian tree, the timber of which is used for furniture making. The wood is prized for its finish and strength. The foliage was used to make pulp and dye cloth.

<i>Acacia dealbata</i> Species of flowering plant

Acacia dealbata, the silver wattle, blue wattle or mimosa, is a species of flowering plant in the legume family Fabaceae, native to southeastern Australia in New South Wales, Victoria, Tasmania, and the Australian Capital Territory, and widely introduced in Mediterranean, warm temperate, and highland tropical landscapes.

<i>Acacia parramattensis</i> Species of legume

Acacia parramattensis, commonly known as Parramatta wattle, is a tree of the family Fabaceae native to the Blue Mountains and surrounding regions of New South Wales. It is a tall shrub or tree to about 15 m (49 ft) in height with phyllodes instead of true leaves. These are finely divided bipinnate. The yellow flowers appear over summer. It generally grows in woodland or dry sclerophyll forest on alluvial or shale-based soils, generally with some clay content.

<i>Acacia colei</i> Species of legume

Acacia colei is a perennial bush or tree native to northern Australia and southern Asia. A common name for it is Cole's wattle. Acacia colei blooms from May through September and the flowers are bright yellow.

<i>Acacia decurrens</i> Species of legume

Acacia decurrens, commonly known as black wattle or early green wattle, is a perennial tree or shrub native to eastern New South Wales, including Sydney, the Greater Blue Mountains Area, the Hunter Region, and south west to the Australian Capital Territory. It grows to a height of 2–15 m (7–50 ft) and it flowers from July to September.

<i>Acacia georginae</i> Species of plant

Acacia georginae is a perennial tree which is native to arid areas of central Australia and has been introduced into the United States. Common names for it include Georgina gidgee, Georgina gidyea and poison gidyea.

<i>Acacia stenophylla</i> Species of tree

Acacia stenophylla is a species of Acacia commonly referred to as the shoestring acacia. It is an evergreen tree in the family Fabaceae native to Australia. It is not considered rare or endangered.

<i>Acacia elata</i> Species of legume

Acacia elata the cedar wattle or mountain cedar wattle is a tree found in eastern Australia.

<i>Acacia tumida</i> Species of legume

Acacia tumida, known colloquially as pindan wattle, spear wattle or wongai, is a species of Acacia native to northern and western Australia.

<i>Acacia cana</i> Species of legume

Acacia cana, or commonly named as boree or the cabbage-tree wattle or broad-leaved nealie, is part of the family Fabaceae and sub-family Mimosoideae. It is a dense shrub- tree that can grow to 6 metres (20 ft) high and is a perennial plant meaning it has long life span and doesn’t necessary produce a high amount of seed. The cabbage-tree wattle heavily flowers from August till October and relies on animals and insects for pollination and dispersal of seeds. This least concern acacia species is found in the western plains of New South Wales and Central Queensland the habitats of these areas are found to be sandy soils and gibber plains.

References

  1. 1 2 Sarah Simpson and Peter Chudleigh (2001), Wattle Seed Production in Low Rainfall Areas (PDF), Agtrans Research
  2. 1 2 E., House, A. P. N. (Alan Pennock Newton), 1954- Harwood, C. (1992). Australian dry-zone acacias for human food : proceedings of a workshop held at Glen Helen, Northern Territory, Australia, 7-10 August 1991. CSIRO Australia, Division of Forestry, Australian Tree Seed Centre. ISBN   0-643-05340-9. OCLC   27188570.
  3. Mildwaters, John; Clarkson, Chris (April 2020). "An experimental assessment of the grinding characteristics of some native seeds used by Aboriginal Australians". Journal of Archaeological Science: Reports. 30: 102127. doi:10.1016/j.jasrep.2019.102127. ISSN   2352-409X. S2CID   214154973.
  4. 1 2 3 Midgley, S. J.; Turnbull, J. W. (2003). "Domestication and use of Australian acacias: case studies of five important species". Australian Systematic Botany. 16 (1): 89. doi:10.1071/SB01038. ISSN   1030-1887.
  5. Bairu, M.W.; Coetzer, W.G.; Amelework, A.B. (November 2019). "Tracing the genetic origin of two Acacia mearnsii seed orchards in South Africa". South African Journal of Botany. 126: 70–77. doi: 10.1016/j.sajb.2019.07.045 . ISSN   0254-6299. S2CID   201208217.
  6. 1 2 Broadhurst, Linda M.; Lowe, Andrew; Coates, David J.; Cunningham, Saul A.; McDonald, Maurice; Vesk, Peter A.; Yates, Colin (4 September 2008). "Seed supply for broadscale restoration: maximizing evolutionary potential". Evolutionary Applications. 1 (4): 587–597. doi:10.1111/j.1752-4571.2008.00045.x. ISSN   1752-4571. PMC   3352390 . PMID   25567799.
  7. 1 2 Sultanbawa, Yasmina; Sultanbawa, Fazal (2021). Australian native plants : cultivation and uses in the health and food industries. Boca Raton: CRC Press. ISBN   978-1-032-09788-6. OCLC   1255882194.