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Family Rhizophoraceae
Rhizophora mucronata Lam. ex Poiret

Jia teng

Scientific names Common names
Mangium candelarium Rumphius Bakau (Tagb., P. Bis., Sul., Mbo.)
Rhizophora candelaria Wight & Am. Bakauan (Tag., Bik., P. Bis., C. Bis., Mag.)
Rhizophora longissima Blanco Bakhau (C. Bis.)
Rhizophora macrorrhiza Griff. Bangkau (Tag.)
Rhizophora mucronata Lam. Toñgog (Bis.)
  Bakauan-babae (Tag.)
  Asiatic mangrove (Engl.)
  Prop root mangrove (Engl.)
  Stilt mangrove (Engl.)
Rhizophora mucronata Lam. is an accepted name The Plant List

Other vernacular names
CHINESE: Jia teng, Hong jia dong.
HINDI: Bhora.
KANNADA: Kandle, Kaandla, Nija kaandla.
MALAYALAM: Panachikandal.
MARATHI: Kandal, Kamdlam, Kamdli
TAMIL: Kandal, Peykkandal.
TELUGU: Kandla, Upoo-ponna.

Bakauan-babae is a tree of the mangrove swamps growing up to 12 meters high, with numerous prop roots. Leaves are shining, oblong-elliptic, 8 to 16 centimeters long, 3.5 to 8 centimeters wide, and pointed at both ends. Cymes are axillary, 2.5 to 4 centimeters long, and bear 3 to 7 stalkless, white or cream-colored flowers. Fruit is ovoid, 3.5 to 5 centimeters long, pendulous, brown or olive colored, the persistent calyx-lobes are reflexed. Protruded radicle is green and cylindric, growing up 20 to 40 centimeters long before falling off the tree. Seeds often germinate while on the tree and crop as young plants into the mud below.

- In mangrove swamps throughout the Philippines.
- Reported in Cambodia, India, Indonesia, Japan, Malaysia, Pakistan, Sri Lanka, Taiwan, Thailand and Vietnam; also in Australia, New Guinea, Madagascar.

- Bark yields tannin in variable amounts, 12.3 to 33.8 per cent.
- Leaves contain 9.13 % tannin; unripe fruit, 12 per cent; ripe fruit, 4.21 percent.

- Study of stems and twigs of the mangrove plant Rhizophora stylosa yielded a new acetylated flavanol, 3,7-O-diacetyl (–)-epicatechin and seven known flavanol derivatives, (–)-epicatechin, 3-O-acetyl (–)-epicatechin, 3,3′,4′,5,7-O- pentaacetyl (–)-epicatechin, (+)-afzelechin, (+)-catechin, cinchonain Ib, and proanthocyanidin B2.
- Methanolic extract of leaves yielded flavonoids, together with gallic acid, quercetn, and coumarin. (see study below) (7)

- Considered astringent, antiseptic, febrifuge.
- In Queensland, the honey which the native bees collect from the flowers is reported to be poisonous, probably endowed with some deleterious principle.
- Studies suggest antidiarrheal, antidiabetic, radical scavenging activities.

Parts used
Bark, leaves.

- Bark used for hematuria.
- Bark also used for diabetes, angina, boils, fungal infections.
- Leaves and bark used as antiseptic; used for diarrhea, dysentery, fever, malaria and leprosy.
- Old leaves used as decoction at childbirth.
- Leaves also prescribed for fever.
- In India, bark used for diabetes.
- In Thailand, bark decoction used as astringent for diarrhea, nausea, and vomiting; also as antiseptic.
- Useful as both wood and fuel.
- Makes an excellent charcoal.
- Tar can be made from the wood.
- Bark used for tanning and dyeing.

Bark extracts showed inhibition of castor oil-induced diarrhea and a very significant percentage inhibition of charcoal meal in mice. Results support the anti-diarrheal activity of Rhizophora mucronata bark. (1)
Anti-HIV: Study extracted a polysaccharide from the bark of R. mucronata. Assessment in an in vitro culture system suggested the RM polysaccharide inhibited early steps of the virus life cycle especially virus adsorption to the cell. (2)
Radical Scavenging Activity: Study of stems and twigs of the mangrove plant Rhizophora stylosa yielded a new acetylated flavanol, 3,7-O-diacetyl (–)-epicatechin and seven known flavanol derivatives. Seven of the 8 compounds exhibited radical scavenging activity comparable to the BHT control. The antioxidant activity was attributed to flavanol derivatives. (3)
Antidiabetic / Antiradical / Leaves: Study evaluated an 80% methanolic extract of leaves for antiradical and antidiabetic activities. Screening yielded flavonoids and gallic acid, quercetin, and coumarin. Results showed antiradical activities, reduction of blood glucose in type 2 diabetic rats and reduced formation of lipid peroxidation in the liver with enhancement of glutathione level in the liver. Findings suggest a source of natural antioxidants and potentialities for an antidiabetic agent by its hypoglycemic activity through antiradical action. (7)


© Godofredo U. Stuart Jr., M.D.

Last Update January 2016

Photos / Content © Godofredo Stuart / StuartXchange
OTHER IMAGE SOURCE: Illustration / Minor Products of Philippine Forests / Vol 1 / Philippine Mangrove Swamps / William Brown and Arthur Fisher / Plate XXIX / Rhizophora mucronata (Bakauan-babae) / 1920

Additional Sources and Suggested Readings
Evaluation of Anti-diarrhea activity of Rhizophora mucronata bark extracts / Amit Kumar Das, RM Rohini M et al / The Internet Journal of Alternative Medicine™ ISSN: 1540-2584
In Vitro Anti-Human Immunodeficiency Virus Activity of Polysaccharide from Rhizophora mucronata Poir. / Mariappan Premanathan et al / Bioscience, Biotechnology, and Biochemistry Vol. 63 (1999) , No. 7 pp.1187-1191
Flavanol Derivatives from Rhizophora stylosa and Their DPPH Radical Scavenging Activity
/ Dong-Li Li, Xiao-Ming Li, Ze-Yu Peng et al / Molecules 2007, 12, 1163-1169
Rhizophora mucronata Lam. ex Poiret (accepted name) / Chinese names / Catalogue of Life, China
Asiatic mangrove / Common names / Flowers of India
Rhizophor mucronata / Synonyms / The Plant List
Antiradical and antidiabetic properties of standardized extract of Sunderban mangrove Rhizophora mucronata / Tapas Kumar Sur, Alok Kumar Hazra, Dipankar Bhattacharyya, Avijit Hazra / Phcog Mag, 2015; 11:389-94./ DOI: 10.4103/0973-1296.153094

It is not uncommon for links on studies/sources to change. Copying and pasting the information on the search window or using the DOI (if available) will often redirect to the new link page.

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