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Family Leguminosae / Fabaceae
Laguan
Euchresta horsfieldii (Lesch.) Benn.

Fu mao shan dou gen

Scientific names Common names
Euchresta horsfieldii (Lesch.) Benn. Katanda (Buk.)
Andira horsfieldii Lesch. Laguan (Tag.)
Euchresta strigillosa C. Y. Wu Makahilab (Buk.)
Euchresta formosana (Hayata) Nakai Fu mao shan dou gen (Chin.)
Geoffroea horsfieldii (Lesch.) Oken  
Katanda is a shared common name by: (1) Katanda, Cassia tora, sicklepod (2) Akapulko, Cassia alata (3) Laguan, Euchrestia horsfieldii

Botany
Laguan is an erect, tough, unarmed shrub about 0.5 to 1.5 meters high. Leaves are alternate, smooth, long-petioled, and odd-pinnate, with 3 to 5 leaflets which are oblong, 10 to 15 centimeters in length, often rounded at the base and pointed at the tip. Flowers are borne in considerable numbers in simple, peduncled, axillary racemes. Corolla is white, about 1.25 centimeters long or twice the length of the calyx. Pods are oblong, 1 to 2 centimeters long, and very turgid, purplish black when mature, and contain a single, large seed.

Distribution
- Of local occurrence on the higher mountains from northern Luzon to Mindanao.
- Also occurs in India to the Riu Kiu Islands from Taiwan southward to Java.

Constituents
- Seeds contain cytisine.
- Study isolated two new prenylflavanones, euchrenones a7 and a8 from the roots and stems.
- Study yielded 40 chemical compounds. The highest, kaur-16-ene, was found in the root (51.29%) and stem (36.13%). Palmitic acid was 16.7% in roots, 34.79% in stems, 23.55% in leaves, 13.79% in skin of seed, and 36.13% in seeds. Vitamin C was highest in the seed skin. (3)
- Roots yielded three new flavonoids, viz., 5,2',4'-trihydroxy-6-(3,3-dimethylallyl-6''',6'''-dimethylpyrano[2''',3''':7,8)] flavanone(euchrenone a9),5,4'-dihydroxy-6(3,3-dimethylallyl)-5'''-hydroxyisoproyldihydrofurano [2",3":7,8]isoflavone(euchrenone b10) and 2-methoxymaackiain, together with known compounds kushenol E, 6,8-di(3,3-dimethylallyl)genistein, osajin, warangalone, derrone 4'-O-methyl ether, alpinumisoflavone 4'-methyl ether and feruloyl hexadecayl ester. (4)

Properties
- Seeds are bitter and poisonous.
- Considered hypolipidemic.

Parts used
Roots, seeds.

Uses

Folkloric
- In the Philippines, roots are chewed as a cure for snake bites.
- Seeds are used for diseases of the chest.
- Although considered poisonous, used as a tonic and aphrodisiac.


Studies
Hypolipidemic / PPAR Activation:
Study of EH fruit extracts showed significant PPARa activation, increased PPARa target gene expression and regulated protein expression for lipid metabolism. Results indicate that E. horsfieldii shows potential as a natural lipid-lowering agent. (1)

Availability
Wild-crafted.

Last Update May 2015

IMAGE SOURCE: Photo / Euchresta horsfieldii (Leschen.) Benn. / © / Copyright / / forest.gov.tw
OTHER IMAGE SOURCE: Euchresta horsfieldii (Lesch.) Benn. / Miquel, F.A.W., Flora van Nederlandsch Indie , vol. 1(1): t. 3 (1855) [Q.M.R. VerHuell] / Illustration contributed by the Missouri Botanical Garden / Plant Illustrations

Additional Sources and Suggested Readings
(1)
Euchresta horsfieldii Benn. activates peroxisome proliferator-activated receptor α and regulates expression of genes involved in fatty acid metabolism in human HepG2 cells / Kim J H, Kim D, Kim J, Hwang JK / J Ethnopharmacol. 2011 Jan 7;133(1):244-7. Epub 2010 Oct 20.
(2)
Two flavanones from Euchresta horsfieldii / Mizuo Mizuno, Toshiyuki Tanaka, Nobuyasu Matsiuura et al / Phytochemistry, Vol 29, No 8, 1990, Pp 2738-2740 / doi:10.1016/0031-9422(90)85236-9
(3)
Study on phenology and chemical compound of Pronojiwo (Euchresta horsfieldii [Lesch] Benn.)
/ Tirta, I G., Ardaka, I M., Darma, I Dw. Pt. / The Spice and Medicinal Crops Bulletin;Vol. 21 No. 1
(4)
Flavonoids in the roots of euchresta horsfieldii in thailand / Mizuno M.; Tanaka T.; Tamura K I.; Matsuura N.; IInuma M.; Phengklai C. / Phytochemistry (oxford). 29(8): 2663-2666, 1990.


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