Canavalia gladiata

Last updated

Sword bean
Canavalia gladiata2.jpg
Scientific classification OOjs UI icon edit-ltr.svg
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Rosids
Order: Fabales
Family: Fabaceae
Subfamily: Faboideae
Genus: Canavalia
Species:
C. gladiata
Binomial name
Canavalia gladiata

Canavalia gladiata, the sword bean [1] or scimitar bean, [2] is a domesticated plant species in the legume family Fabaceae. It is used as a vegetable in interior central and south central India, though not commercially farmed. The unripe pods are also eaten as a vegetable in Africa and Asia. [1]

Contents

From the Japanese agricultural encyclopedia Seikei Zusetsu (1804) Leiden University Library - Seikei Zusetsu vol. 18, page 042 - She Dou  - Canavalia gladiata (Jacq.) DC, 1804.jpg
From the Japanese agricultural encyclopedia Seikei Zusetsu (1804)

The term "sword bean" is also used for other legumes, notably the common jack bean Canavalia ensiformis .

Description

Appearance and Leaves

Sword beans are a climbing, herbaceous vine that can reach lengths of up to 10 meters under optimal conditions. [3]

Inflorescence and Flowers

The inflorescence is a raceme bearing 10 to 20 flowers, which are either white or light purple. Each flower measures approximately 3 cm in length. [3]

Fruits and Seeds

The fruits are shaped as long, straight, slightly compressed pods, measuring 20-40 (up to 60) cm with a rough surface. Each pod contains 8 to 16 seeds, which are oblong-ellipsoid, variable in color, ranging from red and red-brown to white or black. The hilum is dark brown and extends the full length of the seed. [3]

Origin

Canavalia gladiata is believed to have come from the Old World, probably in eastern Asia, where domestication likely started. Still today, sword beans are widely distributed in those regions. Sword beans are most commonly cultivated in the south, southeast, and east Asia. It is also common in Saudi Arabia, East Africa, South Africa, and Madagascar. Historically, its primary use was for food and traditional medicine. [4]

Taxonomy

The genus Canavalia includes about 60 species, two of which are cultivated for food, cover crop, green manure and medicine: jack beans ( Canavalia ensiformis (L.) DC.) and sword beans (C. gladiata (Jacq.) DC). [5]

Sword beans are originally described as Dolichos gladiatus by Jaquin in 1788. In 1825, Augustin-Pyrame de Candolle published the species as Canavalia gladiata (Jacq.) DC., which is the scientific name currently used for sword bean. Over time sword beans have been known by several names based on varying classifications (see list of synonymes below). [6]

Synonymes

Source: [4]

Cultivation

Sword beans can be found from sea level up to 900 m elevation. They need temperatures between 20 and 30 °C to grow and about 900 – 1500 mm evenly distributed rainfall per year. [4]

The average yield of sword beans can reach 720 – 1500 kg/ha. To be used as vegetable, the pods are harvested after 3 to 5 months of growth, when they are about 12.5 to 15 cm long, before the seeds swell and become hard. For the seeds to mature about 6 to 10 months of growth are needed. [7]

Sword beans can tolerate a wide range of soil types with a pH between 4.3 - 6.8. It has a deep-rooted system and can survive drought conditions. [4] The seeds are sown 2 – 3 cm deep with 45 – 60 cm distance between plants within a row. Row spacing is around 75 – 90 cm. [8]

Diseases

Sword beans are relatively resistant to diseases and pests. [7] A major disease affecting sword beans is Anthracnose, which is caused by fungal pathogens of Colletotrichum species. Severe lesions can be found both on the stem and leaves. [9]

Research has also shown that Bean Common Mosaic Virus (BCMV) can infect the sword bean. Previously it has been known to infect several legumes and cause some of the most economically important diseases on legume crops. BCMV could gain importance in sword bean production in the future, if sword bean is grown more widely as BCMV is reported to cause major yield losses in legumes. [10]

Nutritional Composition and Toxicity

Nutritional Composition

Dried sword beans are a highly nutritious wild legume, notable for their high protein content on a dry weight basis. Each 100g of seed flour provides 59g of carbohydrates, 24.5g of protein, and 2.6g of fat, along with 7.4g of fiber, while retaining 10.7g of moisture. This nutrient profile delivers an energy value of 1,453 kJ per 100g. [4]

Mineral Content

The beans are also rich in minerals, containing 109.3 mg of sodium, 1639.5 mg of potassium, 510.1 mg of calcium, 480.9 mg of magnesium, and 601.2 mg of phosphorus. Additionally, trace minerals are present, including 10.9 mg of iron, 0.8 mg of copper, 6.6 mg of zinc, and 2.2 mg of manganese. [11]

Nutritional value per 100 g

Component [4] Fresh Sword Bean Pods (per 100 g)Dry Seeds (per 100 g)
Water83.6 g10.7 g
Energy247 kJ (59 kcal)1,453 kJ (347 kcal)
Protein4.6 g24.5 g
Fat0.4 g2.6 g
Carbohydrate10.7 g59 g
Dietary Fiber2.6 g7.4 g
Calcium33 mg158 mg
Phosphorus66 mg298 mg
Iron1.2 mg7.0 mg
Vitamin A40 IU-
Thiamin0.2 mg0.8 mg
Riboflavin0.1 mg1.8 mg
Niacin2 mg-
Ascorbic Acid (Vitamin C)32 mg1 mg

Toxicity

Despite nutritional potential in terms of protein content sword beans are not used as food. This is partly due to the presence of harmful factors such as haemagglutinis (concanavalin A), protease inhibitors, hydrocyanic acid, tannins, phytates and canavanine. Canavanine is contained in the seeds of the plants (the content is between 10% and 13%). [12] It interferes with protein synthesis and has a nutrition-inhibiting effect on animals and humans. [13] Soaking overnight and boiling in excess water followed by decanting resulted in the greatest reduction in canavanine content (approx. 50%), followed by boiling and decanting in excess water (34%). [12]

Uses

Food  

Records of food usage can be found in multiple countries. Multiple methods were developed to deal with the antinutritive components of sword beans.

Young leaves, flowers, tender green pods and seeds are edible after cooking. The young pods are sliced and cooked or eaten raw. Young seeds are edible after cooking, and the mature seeds are as well, but only after prolonged cooking. In Japan, the young, tender pods are processed into several kinds of pickles called “ Fukujin-zuke, “ Nuka-zuke ”, and “ Miso-zuke. In Java, the de-skinned and twice-boiled seeds are left in running water for 2 days, allowed to ferment for 3–4 days and cooked before being eaten as flavouring. After steaming, they also use young leaves and flowers as flavoring.  

In Cuba, seeds are used as a substitute for coffee. [4] Multiple countries use it as part of their traditional medicine. In India, the sword bean was a staple of ancient food practices but is less popular nowadays. Sword bean is one of the legumes used in Ghana for inexpensive, nutritive meals. [14]

Feed

Fewer information about historical use as feed is available. However, two recent studies investigated its potential as such.  

Sword bean nutritive value was investigated for rats’ nutrition. A diet made exclusively of raw sword bean seeds proved to have a negative effect on weight gain compared to a reference diet. However, this negative effect was decreased when beans were processed to decrease their toxicity. [7]

Another study investigated whether it could partly replace soybeans in broilers’ diets. Results showed that replacing 30% of soybean with processed sword bean did not result in any adverse effect on broilers’ health and growth. [15] Additionally, its foliage provides a good leaf meal for use in animal feeds. [4]

Traditional medicine

Multiple countries have used sword beans in their traditional medicine. In Korea, it is thought to help with many ailments such as vomiting, abdominal dropsy, kidney-related lumbago, asthma, obesity, stomach-ache, dysentery, coughs, headache, intercostal neuralgia, epilepsy, schizophrenia, inflammatory diseases, and swelling. [4] Additionally, sword bean extract is used in soap to treat athlete’s foot and acne.  

In Japan, it was also used for ozena, haemorrhoids, pyorrhea, otitis media, boils, cancers, inflammatory diseases and atopic dermatitis.

In Peninsular Malaysia, the leaves were used by the Malays to treat gonorrhoea. The leaves were used with other substances in a tonic that was squeezed into the eyes. The plant was pounded and applied to boils. The seeds were also used medicinally. [4]

It is also used in Tibetan medicine in combination with other plants. [16]

The Hakka people of China use the sword bean root in their traditional medicine as a decoction against knee pain (genu arthralgia). [17]

Current scientific studies have proved that sword bean has medically valuable actions such as being an antioxidant, anti-cancer, anti-HIV, vasodilator, and anti-osteoporosis. [18] [4]

Green Manure

Canavalia gladiata is often grown as a cover crop, as green manure (due to its nitrogen-fixing ability) and as forage crop. [8]

Related Research Articles

<span class="mw-page-title-main">Bean</span> Seed of one of several genera of the plant family Fabaceae

A bean is the seed of any plant in the legume family (Fabaceae) used as a vegetable for human consumption or animal feed. The seeds are often preserved through drying, but fresh beans are also sold. Most beans are traditionally soaked and boiled, but they can be cooked in many different ways, including frying and baking, and are used in many traditional dishes throughout the world. The unripe seedpods of some varieties are also eaten whole as green beans or edamame, but fully ripened beans contain toxins like phytohemagglutinin and require cooking.

<i>Vicia faba</i> Species of plant in the pea and bean family Fabaceae

Vicia faba, commonly known as the broad bean, fava bean, or faba bean, is a species of vetch, a flowering plant in the pea and bean family Fabaceae. It is widely cultivated as a crop for human consumption, and also as a cover crop. Varieties with smaller, harder seeds that are fed to horses or other animals are called field bean, tic bean or tick bean. Horse bean, Vicia faba var. equinaPers., is a variety recognized as an accepted name. This legume is very common in Southern European, Northern European, East Asian, Latin American and North African cuisines.

<span class="mw-page-title-main">Legume</span> Plant in the family Fabaceae

Legumes are plants in the family Fabaceae, or the fruit or seeds of such plants. When used as a dry grain for human consumption, the seeds are also called pulses. Legumes are grown agriculturally, primarily for human consumption, but also as livestock forage and silage, and as soil-enhancing green manure. Well-known legumes include beans, chickpeas, peanuts, lentils, lupins, mesquite, carob, tamarind, alfalfa, and clover. Legumes produce a botanically unique type of fruit – a simple dry fruit that develops from a simple carpel and usually dehisces on two sides.

<span class="mw-page-title-main">Mung bean</span> Species of plant

The mung bean or green gram is a plant species in the legume family. The mung bean is mainly cultivated in East, Southeast, and South Asia. It is used as an ingredient in both savoury and sweet dishes.

<span class="mw-page-title-main">Cowpea</span> Species of plant

The cowpea is an annual herbaceous legume from the genus Vigna. Its tolerance for sandy soil and low rainfall have made it an important crop in the semiarid regions across Africa and Asia. It requires very few inputs, as the plant's root nodules are able to fix atmospheric nitrogen, making it a valuable crop for resource-poor farmers and well-suited to intercropping with other crops. The whole plant is used as forage for animals, with its use as cattle feed likely responsible for its name.

<i>Phaseolus vulgaris</i> Species of plant

Phaseolus vulgaris, the common bean, is a herbaceous annual plant grown worldwide for its edible dry seeds or green, unripe pods. Its leaf is also occasionally used as a vegetable and the straw as fodder. Its botanical classification, along with other Phaseolus species, is as a member of the legume family, Fabaceae. Like most members of this family, common beans acquire the nitrogen they require through an association with rhizobia, which are nitrogen-fixing bacteria.

<i>Vigna subterranea</i> Species of plant

Vigna subterranea is a member of the family Fabaceae. Its name is derived from the Bambara ethnic group. The plant originated in West Africa. As a food and source of income, the Bambara groundnut is considered to be the third most important leguminous crop in those African countries where it is grown, after peanut and cowpea. The crop is mainly cultivated, sold and processed by women, and is, thus, particularly valuable for female subsistence farmers.

<i>Macrotyloma uniflorum</i> Species of legume

Macrotyloma uniflorum is a legume native to tropical southern Asia, known for its distinct taste and texture, widely used legume in many cuisines. It is also known for human consumption for its rich nutrients and reputed medicinal properties. It is commonly grown for horse feed, hence the name “horse gram”. Horse gram grown in parts of India, as well as Nepal, Malaysia, Sri Lanka, and is introduced to the West Indies. It is consumed whole, sprouted, or ground. It is consumed in many parts of India and is also known as a superfood. Horse gram is also allowed to be eaten on some Hindu fasting days. Medical uses of these legumes have been discussed and is described in the Ayurveda.

<span class="mw-page-title-main">Winged bean</span> Species of legume plant

The winged bean, also known as cigarillas, goa bean, four-angled bean, four-cornered bean, manila bean, princess bean, star bean, kamrangi bean, pea, dragon bean, is a tropical herbaceous legume plant.

<i>Lablab</i> Species of plant

Lablab purpureus is a species of bean in the family Fabaceae. It is native to sub-Saharan Africa and India and it is cultivated throughout the tropics for food. English language common names include hyacinth bean, lablab-beanbonavist bean/pea, dolichos bean, seim or sem bean, lablab bean, Egyptian kidney bean, Indian bean, bataw and Australian pea. Lablab is a monotypic genus.

<i>Vigna umbellata</i> Species of flowering plant

Vigna umbellata, previously Phaseolus calcaratus, is a warm-season annual vine legume with yellow flowers and small edible beans. It is commonly called ricebean or rice bean. To date, it is little known, little researched and little exploited. It is regarded as a minor food and fodder crop and is often grown as intercrop or mixed crop with maize, sorghum or cowpea, as well as a sole crop in the uplands, on a very limited area. Like the other Asiatic Vigna species, ricebean is a fairly short-lived warm-season annual. Grown mainly as a dried pulse, it is also important as a fodder, a green manure and a vegetable. Ricebean is most widely grown as an intercrop, particularly of maize, throughout Indo-China and extending into southern China, India, Nepal and Bangladesh. In the past it was widely grown as lowland crop on residual soil water after the harvest of long-season rice, but it has been displaced to a great extent where shorter duration rice varieties are grown. Ricebean grows well on a range of soils. It establishes rapidly and has the potential to produce large amounts of nutritious animal fodder and high quality grain.

<i>Vigna aconitifolia</i> Species of flowering plant

Vigna aconitifolia is a drought-resistant legume, commonly grown in arid and semi-arid regions of India. It is commonly called mat bean, moth bean, matki or dew bean. The pods, sprouts and protein-rich seeds of this crop are commonly consumed in India. Moth bean can be grown on many soil types, and can also act as a pasture legume.

<span class="mw-page-title-main">Canavanine</span> Chemical compound

L-(+)-(S)-Canavanine is a non-proteinogenic amino acid found in certain leguminous plants. It is structurally related to the proteinogenic α-amino acid L-arginine, the sole difference being the replacement of a methylene bridge (-CH
2
- unit) in arginine with an oxa group (i.e., an oxygen atom) in canavanine. Canavanine is accumulated primarily in the seeds of the organisms which produce it, where it serves both as a highly deleterious defensive compound against herbivores (due to cells mistaking it for arginine) and a vital source of nitrogen for the growing embryo. The related L-canaline is similar to ornithine.

<i>Tylosema esculentum</i> Species of flowering plant

Tylosema esculentum, with common names gemsbok bean and marama bean or morama bean, is a long-lived perennial legume native to arid areas of southern Africa. Stems grow at least 3 metres (9.8 ft), in a prostrate or trailing form, with forked tendrils that facilitate climbing. A raceme up to 25 millimetres (1 in) long, containing many yellow-orange flowers, ultimately produces an ovate to circular pod, with large brownish-black seeds.

<i>Canavalia</i> Genus of legumes

Canavalia is a genus of plants in the legume family (Fabaceae) that comprises approximately 62 species of tropical vines. Members of the genus are commonly known as jack-beans. It has a pantropical distribution.

<i>Inga edulis</i> Species of tree

Inga edulis, known as ice-cream bean, ice-cream-bean, joaquiniquil, cuaniquilguama or guaba, is a fruit native to South America. It is in the mimosoid tribe of the legume family Fabaceae. It is widely grown, especially by Indigenous Amazonians, for shade, food, timber, medicine, and production of the alcoholic beverage cachiri. It is popular in Peru, Ecuador, Pernambuco-Brazil, Venezuela, Guyana and Colombia. The taxonomic name Inga is derived from its name with the Tupí people of South America (ingá) while the species name edulis is Latin for "edible". The common name "ice-cream bean" alludes to the sweet flavor and smooth texture of the pulp.

<i>Canavalia ensiformis</i> Species of legume

Canavalia ensiformis is a legume which is used for animal fodder and human nutrition, especially in Brazil where it is called feijão-de-porco. It is also the source of concanavalin A.

<i>Archidendron pauciflorum</i> Species of plant

Archidendron pauciflorum, commonly known as djenkol, jengkol or jering, is a species of flowering tree in the pea family, Fabaceae. It is native to Southeast Asia, where the seeds are also a popular dish. They are mainly consumed in Indonesia, Thailand, Myanmar, and Vietnam, prepared by frying, boiling, or roasting, and eaten raw. The beans are mildly toxic due to the presence of djenkolic acid, an amino acid that causes djenkolism. The beans and leaves of the djenkol tree are traditionally used for medicinal purposes, such as purifying the blood. To date, djenkol is traded on local markets only.

<i>Canavalia cathartica</i> Species of legume

Canavalia cathartica, commonly known as maunaloa in the Hawaiian language, is a species of flowering plant in the legume family, Fabaceae. The Hawaiian name translates as long mountain. In English it may also be known as poisonous sea bean, ground jack bean, horse bean, silky sea bean or wild bean. It has a Paleotropical distribution, occurring throughout tropical regions in Asia, Africa, Australia, and many Pacific Islands, and extending just into subtropical areas. It is not native to Hawaii, and is an invasive species there.

<i>Mucuna gigantea</i> Species of plant in the family Fabaceae

Mucuna gigantea, commonly known as burny bean, burney bean, velvet bean or sea bean is a species of liana from the legume family Fabaceae. Its natural range roughly follows the perimeter of the Indian Ocean and includes Africa, India, Malesia, New Guinea and northern Australia. Many parts of the plant - in particular the new growth, flowers and fruit - are covered in fine irritant hairs.

References

  1. 1 2 "Canavalia gladiata". Plant Resources of Tropical Africa (PROTA). Archived from the original on 3 February 2022. Retrieved 2 January 2020.
  2. "Canavalia gladiata". Germplasm Resources Information Network . Agricultural Research Service, United States Department of Agriculture . Retrieved 2 January 2020.
  3. 1 2 3 "NParks | Canavalia gladiata". www.nparks.gov.sg. Retrieved 2024-11-06.
  4. 1 2 3 4 5 6 7 8 9 10 11 Lim, T. K. (2012), "Canavalia gladiata", Edible Medicinal And Non-Medicinal Plants, Dordrecht: Springer Netherlands, pp. 569–576, doi:10.1007/978-94-007-1764-0_71, ISBN   978-94-007-1763-3 , retrieved 2024-11-06
  5. Snak, Cristiane; Vatanparast, Mohammad; Silva, Christian; Lewis, Gwilym Peter; Lavin, Matt; Kajita, Tadashi; Queiroz, Luciano Paganucci de (2016). "A dated phylogeny of the papilionoid legume genus Canavalia reveals recent diversification by a pantropical liana lineage". Molecular Phylogenetics and Evolution. 98: 133–146. Bibcode:2016MolPE..98..133S. doi:10.1016/j.ympev.2016.02.001. PMID   26860339.
  6. Sauer, Jonathan (1964). "Revision of Canavalia". Brittonia . 16 (2): 106–181. Bibcode:1964Britt..16..106S. doi:10.2307/2805094. JSTOR   2805094.
  7. 1 2 3 Ekanayake, Sagarika; Jansz, E.R.; Nair, Baboo M. (2000-12-01). "Literature review of an underutilized legume: Canavalia gladiata L." Plant Foods for Human Nutrition. 55 (4): 305–321. doi:10.1023/A:1008119107738. ISSN   1573-9104.
  8. 1 2 Tindall, H. D. (1983). Vegetables in the Tropics. London: Macmillan Education UK. doi:10.1007/978-1-349-17223-8. ISBN   978-0-333-24268-1.
  9. Shi, Min; Xue, Shi-Ming; Zhang, Mei-Yan; Li, Shi-Ping; Huang, Bi-Zhi; Huang, Qi; Liu, Qiong-Bo; Liao, Xiang-Long; Li, Yan-Zhong (2022-12-02). "Colletotrichum truncatum—A New Etiological Anthracnose Agent of Sword Bean (Canavalia gladiata) in Southwestern China". Pathogens . 11 (12): 1463. doi: 10.3390/pathogens11121463 . ISSN   2076-0817. PMC   9780962 . PMID   36558797.
  10. Verma, Raj; Verma, Abhishek; Tripathi, Savarni (2023-10-01). "Sword Bean (Canavalia gladiata): a new host of Bean common mosaic virus". Molecular Biology Reports. 50 (10): 8777–8781. doi:10.1007/s11033-023-08769-8. ISSN   1573-4978. PMID   37651019.
  11. Vadivel, V.; Janardhanan, K. (2005). "Nutritional and Antinutritional Characteristics of Seven South Indian Wild Legumes". Plant Foods for Human Nutrition. 60 (2): 69–75. doi:10.1007/s11130-005-5102-y. ISSN   0921-9668. PMID   16021834.
  12. 1 2 Ekanayake, S.; Skog, K.; Asp, N. -G. (2007-05-01). "Canavanine content in sword beans (Canavalia gladiata): Analysis and effect of processing". Food and Chemical Toxicology. 45 (5): 797–803. doi:10.1016/j.fct.2006.10.030. ISSN   0278-6915. PMID   17187914.
  13. Rosenthal, Gerald A. (1977). "The Biological Effects and Mode of Action of L-Canavanine, a Structural Analogue of L-Arginine". The Quarterly Review of Biology. 52 (2): 155–178. doi:10.1086/409853. ISSN   0033-5770. PMID   331385.
  14. Agyekum, Pearl Boamah; Dombrowski, Jannika; Lutterodt, Herman E.; Ofosu, Isaac W. (2023). "Consumption patterns and usage of selected underutilized legumes in a Ghanaian community". Legume Science. 5 (4). doi: 10.1002/leg3.202 . ISSN   2639-6181.
  15. Sasipriya, Gopalakrishnan; Siddhuraju, Perumal (2013-03-01). "Evaluation of growth performance, serum biochemistry and haematological parameters on broiler birds fed with raw and processed samples of Entada scandens, Canavalia gladiata and Canavalia ensiformis seed meal as an alternative protein source". Tropical Animal Health and Production. 45 (3): 811–820. doi:10.1007/s11250-012-0293-z. ISSN   1573-7438. PMID   23076820.
  16. Witt, Claudia M.; Berling, Nadine E.J.; Rinpoche, Ngari Thingo; Cuomo, Mingji; Willich, Stefan N. (2009). "Evaluation of Medicinal Plants as Part of Tibetan Medicine Prospective Observational Study in Sikkim and Nepal". The Journal of Alternative and Complementary Medicine. 15 (1): 59–65. doi:10.1089/acm.2008.0176. ISSN   1075-5535. PMID   19769478.
  17. Sridhar, K. R.; Seena, S. (2006-01-01). "Nutritional and antinutritional significance of four unconventional legumes of the genus Canavalia – A comparative study". Food Chemistry. 99 (2): 267–288. doi:10.1016/j.foodchem.2005.07.049. ISSN   0308-8146.
  18. Hwang, Yu Jin; Hwang, Hye-Jeong; Go, Hyunseo; Park, NaYeong; Hwang, Kyung-A. (2023). "Sword Bean (Canavalia gladiata) Pods Induce Differentiation in MC3T3-E1 Osteoblast Cells by Activating the BMP2/SMAD/RUNX2 Pathway". Nutrients. 15 (20): 4372. doi: 10.3390/nu15204372 . ISSN   2072-6643. PMC   10610144 . PMID   37892447.