Dioscorea esculenta Health Dictionary

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Dioscorea Esculenta: From 1 Different Sources

Burkill.

Synonym: D. aculeata Linn. D. faciculata Roxb. D. spinosa Roxb ex Wall.

Family: Dioscoreaceae.

Habitat: Madhya Pradesh, Uttar Pradesh, Orissa, Bengal, Assam and the Andamans.

English: Lesser Yam, Karen Potato.

Ayurvedic: Madhvaaluka.

Siddha/Tamil: Musilam, Valli kilangu, Siruvalli Kilangu.

Folk: Suthani.

Action: Tubers are starchy and free from dioscorine, contain 71.29% carbohydrates, 10.82% albuminoids.

Health Source: Indian Medicinal Plants
Author: Health Dictionary

Casearia Esculenta

Roxb.

Synonym: C. ovata (Lamk) Willd. C. zeylanica (Gaertn.) Thw.

Family: Samydaceae; Flacourtiaceae

Habitat: Peninsular India, up to 1,800 m.

Ayurvedic: Saptachakraa.

Siddha/Tamil: Kakkaipilai, Kilar, Kottargovai.

Folk: Saptrangi (root and root bark).

Action: Root—antidiabetic (used in milder chronic diabetic cases), astringent, liver tonic. Frequently adulterated with the roots of Salacia chinensis Linn. and S. macrosperma Wight.

The crude aqueous extract of the roots has shown hypoglycaemic activity.

The root gave leucopelargonidin, beta-sitosterol, dulcitol, a flavonoid and arabinose.... casearia esculenta

Colocasia Esculenta

(Linn.) Schott.

Synonym: C. antiquorum Schott.

Family: Araceae.

Habitat: Cultivated throughout India.

English: Taro, EdibleYam.

Ayurvedic: Pindaaluka, Aaluki.

Siddha/Tamil: Chaembu, Shaeppam- kizhangu.

Folk: Arvi, Ghuiyaa.

Action: Juice from petiole—styptic, rubefacient. Juice of corn—used in alopaecia.

The leaves contain flavones, api- genin and luteolin, also anthocyanins. Leaves cause severe irritation in mouth. Cooked leaves are a source of dietary fibre for diabetics helping in lowering post-prandial blood glucose level. A significant increase in total lipids, total cholesterol and triglyceride levels was observed in hypercholesterolaemic rats when fed with dried leaf powder.

The pressed juice of the petioles is used as an astringent and styptic. All parts of the plant show an acridity. The acridity is removed by boiling and by addition of baking soda.

From the tubers two dihydroxys- terols, besides beta-sitosterol and stig- masterol, have been isolated. Five novel aliphatic compounds have been reported. Trypsin inhibitors are isolated from the tubers.

The total amino acids recorded in the tubers range from 1380 to 2397 mg/ 100 g. The lysine concentration was relatively low. Besides starch, the tubers contain natural polysaccharides with 56% neutral sugars and 40% anionic components. Steamed corms contain 30% starch and 3% sugar.... colocasia esculenta

Dioscorea Alata

Linn.

Synonym: D. atropurpurea Roxb. D. globosa Roxb. D. purpurea Roxb.

Family: Dioscoreaceae.

Habitat: Native to East Asia; cultivated in Assam, Vadodara, Tamil Nadu, Bengal and Madhya Pradesh.

English: Wild Yam, Greater Yam, Asiatic Yam.

Ayurvedic: Kaashthaaluka. Aaluka (var.). Aalukas (yams) of Ayurvedic texts, belong to Dioscorea spp.

Siddha/Tamil: Perumvalli kizhangu.

Folk: Kathaalu.

Action: Even the best among the cultivated yams causes irritation in the throat or a feeling of discomfort when eaten raw. Wild yams—cholagogue, antispasmodic, anti-inflammatory, antirheumatic, diuretic. Also used for painful periods, cramps and muscle tension.

Key application: Dioscorea villosa L., Wild Yam—as spasmolytic, anti-inflammatory. (The British Herbal Pharmacopoeia.)

The edible tubers of Dioscorea alata are purple-coloured and contain an- thocyanins, cyanidin and peonidin- 3-gentiobioside acylated with sinapic acid. The tubers contain surcose, while leaves contain large quantities of D- fructose, D-glucose and the polyols, 2-deoxyribitol, 6-deoxysorbitol and glycerol.

Mouldy yams are reported to contain a compound ipomeanol which is being tested against human lung cancer. (J. Am Med Assoc, 1994,15, 23.)

Diosgenin obtained from Dioscorea species was used in the first commercial production of oral contraceptives, topical hormones, systemic corticos- teroids, androgens, estrogens, pro- gestogens and other sex hormones.

The chemical transformation of di- osgenin to estrogen, progesterone or any other steroidal compound does not occur in human body. Topically applied Wild Yam does not appear to cause changes in serum FSH, estradi- ol or progesterone. (Natural Medicines Comprehensive Database, 2007.)

Diosgenin, combined with the drug clofibrate, caused a greater decrease in LDL than either substance alone in rats. (Sharon M. Herr.)... dioscorea alata

Dioscorea Anguina

Roxb.

Synonym: D. puber Blume.

Family: Dioscoreaceae.

Habitat: Wet regions of the Himalayas from Central Nepal, eastwards to northern Bengal, Assam and Chittagong.

Ayurvedic: Kaasaalu, Kasaalu.

Folk: Koshakanda (Bengal).

Action: See D. alata.... dioscorea anguina

Dioscorea Daemona

Roxb.

Ayurvedic: Hastyaaluka.

Siddha/Tamil: Peiperendai.

Folk: Karukandu, Kolo (Bihar).

Action: Tubers—used for ulcer, to kill worms in wounds. Plant parts— used in whitlow, sores, boils.

The tubers contain 81.45-81.8 carbohydrates, 7.20-9.12% albuminoids. The toxic principle is dioscorine which is distributed throughout the plant.... dioscorea daemona

Dioscorea Glabra

Roxb.

Family: Dioscoreaceae.

Habitat: Assam, Bengal, Bihar, Orissa and Andaman and Nicobar Islands.

Ayurvedic: Shankhaaluka.

Action: Tubers contain 77.7978.23% carbohydrates, 9.73-10.13% albuninoids.... dioscorea glabra

Dioscorea Bulbifera

Linn.

Synonym: D. sativa Thumb auct. non L.D. versicolor Buch.-Ham ex Wall.

Family: Dioscoreaceae.

Habitat: Throughout tropical India, at 1,500-2,100 m.

English: Patoto Yam, Bulb-bearing Yam, Air Potato, Dog Yam.

Ayurvedic: Vaaraahi, Vaaraahikan- da, Grshti, Banaaalu, Suraalu, Raktaalu. Substitute for Vriddhi.

Unani: Baraahikand.

Siddha/Tamil: Kodi-kilangu, Pannu-kilangu.

Action: Dried and pounded tubers are used as an application for swellings, boils and ulcers; roasted tubers are used in dysentery, piles, venereal sores. Leaf—febrifuge.

The raw tubers are bitter due to the presence of furanoid norditerpenes (they lose their bitterness on roasting and are then eaten). The wild tubers contain nearly 83% starch and possess hunger-suppressing property. They contain certain poisonous alkaloids.

The rhizomes afforded D-sorbitol, furanoid norditerpenes—diosbulbins A-D, 2,4,6,7-tetrahydroxy-9,10-dihy- drophenanthrene and 2,4,5,6,-tetra- hydroxyphenanthrene, diosgenin, lucein, neoxanthine, violaxanthin, zeax- anthin, auroxanthin and cyrptoxan- thin.... dioscorea bulbifera

Dioscorea Deltoidea

Wall ex Griseb.

Synonym: D. nepalensis Sweet ex Bernardi.

Family: Dioscoreaceae.

Habitat: The Himalaya from Kashmir to Arunachal Pradesh and in Assam at 450-3,100 m.

Ayurvedic: Vaaraahikanda (var.), Grishti.

Folk: Gun, Kris (Punjab).

Action: Tuber—antipthiriac. Leaf— febrifuge. The rhizomes are a rich source of diogenin and its glycoside. Steroidal saponins have also been isolated. Diogenin is used in the preparation of various steroidal drugs.

Synonym: D. hispada Dennst. D. hirsuta Dennst.

Family: Dioscoreaceae.

Habitat: Sikkim, the Himalayas, Khasi Hills.... dioscorea deltoidea

Dioscorea Hamiltonii

Hook. f.

Family: Dioscoreaceae.

Habitat: The Western Ghats, Sikkim, Assam, Orissa and Bengal.

Ayurvedic: Vaaraahi (var.).

Folk: Naagar-kanda (Bihar).

Action: Tubers contain 85.50% carbohydrates, 8.30% albuminoids.... dioscorea hamiltonii

Dioscorea Oppositifolia

Linn.

Family: Dioscoreaceae.

Habitat: South India; throughout the hills of Deccan.

Ayurvedic: Amlikaakanda (controversial synonym).

Siddha: Kavala-kodi, Venilai Valli.

Folk: Aambaalio Kanda (Gujarat).

Action: Used externally for reducing swellings.... dioscorea oppositifolia

Dioscorea Pentaphylla

Linn.

Synonym: D. triphylla var. doemona Prain & Burkill.

Family: Dioscoreaceae.

Habitat: Native to tropical Asia; distributed throughout India.

Ayurvedic: Vaaraahikanda (var., dry pieces are sold as Vidaarikanda).

Folk: Kaantaalu.

Action: Tubers contain 71.0780.77% carbohydrates, 8.68-15.93% albuminoids. Tubers are used to disperse swellings.... dioscorea pentaphylla

Dioscorea Prazeri

Prain & Burkill.

Synonym: D. Clarkei Prain & Burkill D. deltoidea Wall. var. sikkimensis Prain

Family: Dioscoreaceae.

Habitat: The Himalaya from Nepal to Bhutan, up to 1,500 m, also in Naga Hills.

Ayurvedic: Neelaalu.

Action: Tuber—antiphthiriac.

The rhizomes are used as a hair wash for killing lice. They contain diogenin (on dry basis) 2.5%. Also obtained are steroidal sapogenins, sito- sterol glucoside, prazerigenin-A gluco- side, prazerigenin-A bioside and 9,10- dihydrophenanthrenes.... dioscorea prazeri

Manihot Esculenta

Crantz.

Family: Euphorbiaceae.

Habitat: Native to Brazil. Major crop in Kerala, Tamil Nadu and Andhra Pradesh.

English: Manioc, Tapioca, Cassava.

Siddha/Tamil: Maravalli kizhangu, Ezhalai kizhangu.

Folk: Tapioca.

Action: Staple food for poorer section of the population in many tropical countries. The starch is used for the manufacture of dextose, liquid glucose. The bitter variety is used for treating scabies and weeping skin.

The tuber is a good source of provitamin A carotenoids. It contains 0.1-3.0 mg/kg (fresh weight) of beta- carotene and 0.05-00.6 mg/kg (fresh weight) of lutein. The bitterness of the tuber is related to the cyanoglu- coside content which ranges from 320 to 1,100 mcg cyanide/g in very bitter tubers and from 27.5 to 77.5 mcg is non-bitter tubers. Boiling, crushing and sun-drying reduce bitterness and also cyanoglucoside content. The tannin equivalent content in the clones varies from 0.31 to 0.34% and saponin equivalent varies from 0.18 to 0.29%.

Feeding tapioca significantly reduced the plasma cholesterol profile experimentally in cats and rats.... manihot esculenta

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