This plant is a big tree that grows to about 8–15 m high. Its leaves are thick, smooth and oval in shape, about 8–12 cm long and 4–5 cm wide, with reddish petioles about 0.5–1.0 cm long. The plant has drooping raceme of up to 50 cm long, with numerous large, white flowers. Its fruit is oval-shaped and about 3 cm long, with 1 seed inside.[4]
Uses
Food
The young leaves of this plant are consumed as food, such as in Vietnam where they are eaten fresh with other vegetables, meat and shrimp.[4]
Medicinal
Research on this plant has reported a number of medicinal uses, including antitumor (seed extract),[5] antibiotic,[6] inhibition of growth of Helicobacter pylori,[7] antinociceptive activity[8] and antifungal activity.[9][10]
The 1889 book 'The Useful Native Plants of Australia’ records that "In India an extract or juice is obtained from the leaves of this tree which, when mixed with oil, is used in native [sic.] practice for eruptions of the skin. The kernels powdered and prepared with sago and butter, are used in diarrhoea; mixed with milk they produce vomiting (Treasury of Botany). The root is bitter, and is said to be similar to Cinchona, but also cooling and aperient. (Drury)."[11]
Chemistry
Its bark contains potent painkillers, structurally unrelated to known opioid painkillers [1]
Oleanane-type isomeric triterpenoids:- racemosol A (1) [22alpha-acetoxy-3beta,15alpha,16alpha,21beta-tetrahydroxy-28-(2-methylbutyryl)olean-12-ene] and isoracemosol A (2) [21beta-acetoxy-3beta,15alpha,16alpha,28-tetrahydroxy-22alpha-(2-methylbutyryl)olean-12-ene].[15]
^ abTanaka, Yoshitaka; Van Ke, Nguyen (2007). Edible Wild Plants of Vietnam: The Bountiful Garden. Thailand: Orchid Press. p. 88. ISBN978-9745240896.
^Samanta S.K.; Bhattacharya K.; Mandal C.; Pal B.C. (2010). "Identification and quantification of the active component quercetin 3-O-rutinoside from Barringtonia racemosa, targets mitochondrial apoptotic pathway in acute lymphoblastic leukemia". Journal of Asian Natural Products Research. 12 (8): 639–48. doi:10.1080/10286020.2010.489040. PMID20706898. S2CID41871403.
^Bhamarapravati S; Pendland SL; Mahady GB (2003). "Extracts of spice and food plants from Thai traditional medicine inhibit the growth of the human carcinogen Helicobacter pylori". In Vivo. 17 (6): 541–4. PMID14758718.
^Deraniyagala SA; Ratnasooriya WD; Goonasekara CL (2003). "Antinociceptive effect and toxicological study of the aqueous bark extract of Barringtonia racemosa on rats". Journal of Ethnopharmacology. 86 (1): 21–6. doi:10.1016/s0378-8741(03)00015-1. PMID12686437.
^Vijaya Bharathi R.; Jerad Suresh A.; Thirumal M.; Sriram L.; Geetha Lakshmi S.; Kumudhaveni B. (2010). "Antibacterial and antifungal screening on various leaf extracts of Barringtonia acutangula". International Journal of Research in Pharmaceutical Sciences. 1 (4): 407–410.
^Sahoo S.; Panda P.K.; Behera P.S.; Mishra S.R.; Ellaiah P. (2008). "Antifungal activity of Barringtonia acutangula against selected human pathogenic fungi". Indian Drugs. 45 (1): 26–30.
^Chemical constituents of mangrove plant Barringtonia racemosa]. [Chinese] Sun HY. Long LJ. Wu J. Zhong Yao Cai. 29(7):671-2, 2006 Jul.
^Yang Y, Deng Z, Proksch P, Lin W (2006). "Two new 18-en-oleane derivatives from marine mangrove plant, Barringtonia racemosa". Pharmazie. 61 (4): 365–6. PMID16649558.