Family Leguminosae

Bataw
Dolichos lablab Linn.
Pien-tou
HYACINTH BEAN

Other scientific names Common names 
Lablab purpureus Baglau (C. Bis.)
Dolichos purpureus Batau (Bik., Bis.) 
  Bataw (Tag., Bik., P. Bis.) 
  Bulay (C.Bis.) 
  Itab (If., Bon,) 
  Parda, parda-atap (ilk.) 
  Sibachi, sibatsi(Tag.)
  Pien-tou (Chin.)
  Hyacinth bean (Engl.)


Botany
A climbing or trailing vine, 4 to 6 m long, with a smooth, usually purple stem. Leaves are long stalkd, with 3 inequilateral leaflets, each about 4 to 10 cm long. Flowers are in clusters, white to purple in color, along an erect inflorescence stalk. The pods are purple-margined, flat, and elongated with a prominent beak, about 7.5 cm long and 2.5 cm wide.

Distribution
Commonly cultivated throughout the settled areas in the Philippines.

Properties
Emmenagogue (flowers); tonic and carminative (boiled ripe seeds); febrifuge, stomachic, antispasmodic.

Propagation
Propagation by seeds. Cultivated for market produce. Pods are harvested about 4 months after planting.

Parts used and preparation
Bean, root.

Uses
Folkloric
Infusion of leaves used for gonorrhea.
Poultice of leaves for snake bites.
Leaves used for menorrhagia and leucorrhea.
Juice of the leaves mixed with lime, applied to tumors and abscesses.
Salted juice from the pods used for ear inflammation and sore throat.

The Malays make of poultice of the leaves mixed with rice-flowers and tumeric used for eczema.
In Indo-China, Infusion of leaves for colic.
Seeds are considered aphrodisiac; also used to stop nose bleeds.

Nutritional
Tender pods, seeds and young leaves used as vegetable.
Young leaves and pods are good sources of calcium, iron, vitaminn C, and other minerals.

Studies
Stem Cell Preservation Factor: Stem cell preservation factor FRIL (Flt3 receptor-interacting lectin), a plant lectin extracted from Dolichos lablas was found to preserve hematopoietic stems cells in vitro for a month.
Hypocholesterolemic: Diet supplemented with D. lablab seeds showed a hypocholesterolemic effect.
Cholecystokinin Secretion: A peptide derived from dolicholin, a phaseolin-like protein from D lablab potently stimulated cholecystokinin secretion from enteroendocrine STC-1 cells.and suppressed food intake.

Availability
Cultivated for market produce.
Wildcrafted
 


Additional Sources and Suggested Readings
(1)
Legume lectin FRIL preserves neural progenitor cells in suspension culture in vitro / Stem Cells and Regenerative Medicine Lab, Beijing Institute of Transfusion Medicine, Beijing 100850, China.
(2)
Hypocholesterolemic effect of diet supplemented with Indian bean (Dolichos lablab L. var lignosus) seeds / Journal: Nutrition & Food Science / 2007 Volume: 37 Issue: 6 Page: 452 - 456 / ISSN: 0034-6659 / DOI: 10.1108/00346650710838117
(3)
Peptides derived from dolicholin, a phaseolin-like protein in country beans (Dolichos lablab), potently stimulate cholecystokinin secretion from enteroendocrine STC-1 cells / Journal of agricultural and food chemistry (J Agric Food Chem) / 2007-Oct; vol 55 (issue 22) : pp 8980-6