An yi imanin cewa wurin haifuwar wannan 'ya'yan itace yana wani wuri tsakanin Indiya da Burma, ko kuma a China. A halin yanzu ana girma a ƙasashe irin su Sri Lanka, Indiya ta Kudu, Kudancin China da sauran ƙasashen kudu maso gabashin Asiya da dama. 'Ya'yan itãcen marmari suna da siffar zagaye ko oval tare da nama mai jujjuyawa kuma ya ƙunshi iri ɗaya baƙar fata. Itacen Longan nasa ne na Evergreen, yana girma a tsayin mita 9-12. Longan tushen arziki ne na bitamin da ma'adanai daban-daban. Ya ƙunshi bitamin B1, B2, B3, kazalika da bitamin C, ma'adanai: baƙin ƙarfe, magnesium, silicon. Kyakkyawan tushen duka furotin da fiber. 100 g na longan yana samar da jiki tare da 1,3 g na gina jiki, 83 g na ruwa, 15 g na carbohydrates, 1 g na fiber da kimanin calories 60. Yi la'akari da wasu fa'idodin kiwon lafiya na 'ya'yan itacen Longan:
- An san shi don tasirin warkarwa akan matsalolin ciki. Longan yana taimakawa tare da ciwon ciki, yana ƙarfafa tsarin rigakafi, wanda ke ba da damar jiki don yaki da cututtuka daban-daban.
- Yana da tasiri mai amfani akan aiki na tsarin jini, da kuma zuciya.
- Magani mai kyau ga anemia, kamar yadda yake taimakawa jiki shan baƙin ƙarfe.
- Ganyen bishiyar Longan sun ƙunshi quercetin, wanda ke da kaddarorin antiviral da antioxidant. An yi amfani dashi a cikin maganin cututtuka daban-daban na ciwon daji, allergies, a cikin maganin cututtuka na zuciya da jijiyoyin jini da ciwon sukari.
- Longan yana inganta aikin jijiyoyi, yana kwantar da tsarin juyayi.
- Kwayar 'ya'yan itace ta ƙunshi mai, tannins da saponins, waɗanda ke aiki azaman wakili na hemostatic.
- Longan yana da wadata a cikin phenolic acid, wanda ke aiki a matsayin antioxidant mai karfi kuma yana dauke da maganin fungal, antiviral, da magungunan kashe kwayoyin cuta.