Family Cucurbitaceae
Patola
Luffa acutangula
BATH SPONGE, SPONGE GOURD, ANGLED LUFFA, VEGETABLE SPONGE


Other scientific names  Common names 
Cucumis acutangulus  Patola (Tag.) 
Curcubita acutangula Patula-baibing (Sul.) 
Luffa acutangula  Saykua (Bis.) 
Luffa foertida  Bath sponge (Engl.)
  Angled luffa  (Engl.)
  Ridge gourd (Engl.)
  Ridged luffa (Engl.)
  Chinese okra (Engl.)
  Sponge gourd (Engl.)
  Towel gourd (Engl.)

Botany
The vegetable is a corase, annual, herbaceous vine. Leaves are subrounded-ovate, 10-20 cm long, shallowly five-lobed, and heart-shaped at the base. Female flowers are singly pedicelled in the axis of the leaves. Male flowers are yellow, 2 cm long, in axillary racemes. Calyx lobes are lanceolate and pointed. Fruit is oblong-oblanceolate, 20-25 cm long, about 5 cm in diameter, with 10 prominent, longitudinal sharp angles. Seeds are numerous and close-packed.

The sponge is derived from the mature fruit as it dries into a matrix of stiff vascular bundle.

Distribution
Cultivated for its edible fruit.

Constituents
Fruit contains a bitter principle, luffeine.
Seed contains a fixed oil of glycerides of palmitic, stearic, and myristic acids.
Fruit is considered demulcent, diuretic, nutritive.
Seeds considered purgative and emetic.
A good source of calcium, iron and phosphorus.

Parts utiliezed and preparation
Leaves, fruit.

Uses
Nutrition
· Edible; cooked or fried, used in soups and sauces.
• Occasionally, stem tops with young leaves and flower buds used as leafy vegetable.
• Young fruits of cultivars, earten raw or pickled.
• A good source of calcium, iron and phosphorus.

Folkloric
· Decoction of leaves for amenorrhea.
· Poultice of leaves for hemorrhoids.
· Juice of fresh leaves for conjunctivitis.
· Juice of leaves also used externally for sores and various animal bites.
· Seed oil used for dermatitis.
· Infusion of seeds as purgative and emetic.
• In Russia, roots is used as a purge.
• In India, roots is used for dropsy and as laxative; leaf and fruit juice used to treat jaundice.
• In Java, leaf decoction used for uremia and amenorrhea.
• In Bangladesh, pounded leaves used for hemorrhoids, splenitis, leprosy. Juice of leaces used for conjunctivitis in children.
• In West Africa, leaf extract of ridged gourd applied to sores caused by guinea worms; leaf sap used as eyewash in conjunctivitis; fruits and seeds used in herbal preparations for treatment of venereal diseases.
In Mauritius, seeds eaten to expel intestinal worms; leaf juice applied to eczema.
• Seed used as insecticidal.

Others
· Fibrous nature of the mature fruit, devoid of pulp, is used as a bath brush or sponge.
• In China, has been used as a pesticide.
• Fibers sometimes used for making hats.


Studies
Trypsin Inhibitors: Study isolated two trypsin inhibitors, LA-1 and LA-2, both consisting of 28-29 amino acid residues, respectively. Both strongly inhibit trypsin by forming enzyme-inhibitor complexes.
Constituents:
Study isolated seven oleanane-type triterpene saponins, acutosides A-G.
Antioxidants :
An antioxidant-guided assay yielded eight compounds. Results showed consumption of sponge gourds can supply some antioxidant constituents to the human body.
Antimicrobial / Water Disinfectant :
Study showed the some antimicrobial potential of seeds and fruits of Lc as a disinfectant of drinking water. However, the disinfection performance was less that would be required to be considered reliable
.

Availability
Cultivated.
Common market vegetable.
Seeds and sponges in the cybermarkets.



Additional Sources and Suggested Readings
(1)
Allozymic, Morphological, and Phenological Diversity in Cultivated Luffa acutangula (Cucurbitaceae) from China, Laos, and Nepal, and Allozyme Divergence between L. acutangula and L. aegyptiaca
Economic Botany 59(2):154-165. 2005 /doi: 10.1663/0013-0001(2005)059[0154:AMAPDI]2.0.CO;2
(2)
Study of Nutritive Value and Medicinal Uses of Cultivated Luffa acutangula

(3)
Luffa acutangula (L.) Roxb. / M O Soladoye and A A Adebisi / Protabase Record Display
(4)
Trypsin inhibitors from ridged gourd (Luffa acutangula Linn.) seeds: Purification, properties, and amino acid sequences / Umesh Haldar et al / Journal of Protein Chemistry • Volume 15, Number 2 / February, 1996 •
DOI 10.1007/BF01887398

(5)
Studies on the constituents of Luffa acutangula Roxb. I. Structures of acutosides A--G, oleanane-type triterpene saponins isolated from the herb
/ Nagao T, Tanaka R, Iwase Y, Hanazono H, Okabe H / Chem Pharm Bull (Tokyo). 1991 Mar;39(3):599-606
(6)
Antioxidant Constituents in the Fruits of Luffa cylindrica (L.) Roem / Qizhen Du et al / J. Agric. Food Chem., 2006, 54 (12), pp 4186–4190 / DOI: 10.1021/jf0604790
(7)
Disinfection of waterborne coliform bacteria using Luffa cylindrica fruit and seed extracts / Ameer Shaheed et al / Environmental Technology, Volume 30, Issue 13 December 2009 , pages 1435 - 1440 / DOI: 10.1080/09593330903193485



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