For the city in Thailand, see Pattaya. For the Thai weightlifter, see Pitaya Tibnoke.
Apitaya (/pɪˈtaɪ.ə/) or pitahaya (/ˌpɪtəˈhaɪ.ə/) is the fruit of several different cactus species indigenous to the region of southern Mexico and along the Pacific coasts of Guatemala, Costa Rica, and El Salvador.[1][2] Pitaya is cultivated in East Asia, South Asia, Southeast Asia, the United States, the Caribbean, Australia, Brazil, and throughout tropical and subtropical regions of the world.
Pitaya usually refers to fruit of the genus Stenocereus, while pitahayaordragon fruit refers to fruit of the genus Selenicereus (formerly Hylocereus), both in the family Cactaceae.[3] The common name in English – dragon fruit – derives from the leather-like skin and scaly spikes on the fruit exterior. Depending on the variety, pitaya fruits may have sweet- or sour-tasting flesh that can be red, white, or yellow in color.
Vernacular names
These fruits are commonly known in English as "dragon fruit", a name used since 1963, apparently resulting from the leather-like skin and prominent scaly spikes on the fruit exterior.[4] The fruit is often designated as "Vietnamese dragon fruit" as Vietnam is the lead exporter.[5] The fruit may also be known as a strawberry pear.[2][6]
The names pitahaya and pitaya derive from Mexico, and pitaya roja in Central America and northern South America, possibly relating to pitahaya for names of tall cacti species with flowering fruit.[2][7]
Geography
Pitaya or dragon fruit is native to the region of southern Mexico and along the Pacific coasts of Guatemala, Costa Rica, and El Salvador.[1][2] The dragon fruit is cultivated in East Asia, South Asia, Southeast Asia, the United States, the Caribbean, Australia, and throughout tropical and subtropical regions of the world.[1][2]
Stenocereus fruit (sour pitayas) are a variety that is commonly eaten in the arid regions of the Americas. They are more sour and refreshing, with juicier flesh and a stronger taste.
The fruit of related species, such as S. queretaroensis and the dagger cactus or pitaya de mayo (S. griseus),[3]: 223–225 are also locally important foods. The fruit of the organ pipe cactus (S. thurberi, called ool by the Seris) is the pitaya dulce "sweet pitaya".
Dragon fruit, Selenicereus
Sweet pitayas come in three types, all with leathery, slightly leafy skin:[3]: 215–216
Selenicereus undatus (Pitaya blanca or white-fleshed pitaya, also known as Hylocereus undatus) has pink-skinned fruit with white flesh. This is the most commonly seen "dragon fruit".
Selenicereus costaricensis (Pitaya roja or red-fleshed pitaya, also known as Hylocereus costaricensis, and possibly incorrectly as Hylocereus polyrhizus) has red-skinned fruit with red flesh.
Selenicereus megalanthus (Pitaya amarilla or yellow pitaya, also known as Hylocereus megalanthus) has yellow-skinned fruit with white flesh.
The fruit normally weighs from 150 to 600 grams (5+1⁄2 to 21 oz); some may reach 1 kg (2 lb 3 oz).[8] Early imports from ColombiatoAustralia were designated "Hylocereus ocampensis" (or "Cereus repandus", the red fruit) and "Cereus triangularis" (supposedly, the yellow fruit or the three-sided cross-section of the stem).
Cultivation
After a thorough cleaning of the seeds from the pulp of the fruit, the seeds may be stored when dried. The ideal fruit is unblemished and overripe.
Seeds grow well in a compost or potting soil mix – even as a potted indoor plant. Pitaya cacti usually germinate after between 11 and 14 days after shallow planting. As they are cacti, overwatering is a concern for home growers. As their growth continues, these climbing plants will find something to climb on, which can involve putting aerial roots down from the branches in addition to the basal roots. Once the plant reaches a mature 4.5 kilograms (10 pounds) in weight, the plant may flower.[clarification needed]
Commercial plantings can be done at high density with between 1,100 and 1,350 per hectare (445 and 546/acre). Plants can take up to 60 months/260 weeks to come into full commercial production, at which stage yields of 20 to 30 metric tons (22 to 33 short tons) can be expected.[9]
Pitaya flowers bloom overnight and usually wilt by the evening.[10] They rely on nocturnal pollinators such as batsormoths for fertilization. Self-fertilization will not produce fruit in some species and while crossbreeding has resulted in several "self-fertile" varieties, cross-pollinating with a second, genetically distinct plant of the same species generally increases fruit set and quality. This limits the capability of home growers to produce the fruit. However, the plants can flower between three and six times per year depending on growing conditions. Like other cacti, if a healthy piece of the stem is broken off, it may take root in the soil and become its own plant.
The plants can endure temperatures up to 40 °C (104 °F) and short periods of frost but will not survive long exposure to freezing temperatures. The cacti thrive most in USDA zones 10–11 but may survive outdoors in zone 9a or 9b.[2][11]
Selenicereus has adapted to live in dry tropical climates with a moderate amount of rain. In numerous regions, it has escaped cultivation to become a weed and is classified as an invasive weed in some countries.[1]
The red and purple colors of some Selenicereus fruits are due to betacyanins, a family of pigments that includes betanin, the same substance that gives beets, Swiss chard, and amaranth their red color.[19][20]
Nutrients
The USDA FoodData Central database published their analysis of the nutritional contents of raw Pitaya in 2022.[21] The majority of the fruit by weight is water (87g out of 100g). One serving of 100-gram (3+1⁄2-ounce) provides 240 kilojoules (57 kilocalories) of food energy.
^Boning, Charles R. (2006). Florida's Best Fruiting Plants: Native and Exotic Trees, Shrubs, and Vines. Sarasota, Florida: Pineapple Press, Inc. p. 185. ISBN978-1-56164-372-1.
^National Academies of Sciences, Engineering, and Medicine; Health and Medicine Division; Food and Nutrition Board; Committee to Review the Dietary Reference Intakes for Sodium and Potassium (2019). Oria, Maria; Harrison, Meghan; Stallings, Virginia A. (eds.). Dietary Reference Intakes for Sodium and Potassium. The National Academies Collection: Reports funded by National Institutes of Health. Washington, DC: National Academies Press (US). ISBN978-0-309-48834-1. PMID30844154. Archived from the original on 9 May 2024. Retrieved 21 June 2024.