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Fulltext – Functional Properties of Bitter Yam (Dioscorea dumetorum) as Influenced by Soaking Prior to Oven-drying. The plant is often purposely grown at spare points on the land as an insurance against famine years, and is also encouraged in hedgerows around a farm and. Notes. BRIEF DESCRIPTION A climbing vine with robust, spiny stems reaching up to m in length. The leaves are trifoliate with ovate leaflets, cm long.

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Dioscorea dumetorum

Bulk density, the ratio of the mass per unit volume of a substance, indicates the porosity, package size, mouth feel and flavor of a product and is generally affected by the particle size Unuigbe and Ozekhome, Potential of its flour in noodle production was investigated in this study. Field spacing-mounds are m apart, and ridges also m apart.

The tubers of D. Subsequently, it was spread through Thailand and Vietnam into the Pacific region, westwards and southwards to India and Malaysia and thence apparently to Madagascar and East Africa, later to be taken by the Portuguese and Spaniards to West Africa, northern South America and the Caribbean; in the eastern Caribbean and dumetirum the Pacific it is the most popular species of yam.

There were subjected to one-way analysis of variance ANOVAmeans were separated using Duncan multiple range test at 0. In due course the foliage should become thick enough to cover the ground and eliminate weeds, especially when the vines are unslaked. The species occurs in a wide variety of forms and many synonyms have appeared in the literature, including D.


The rumetorum capacity was determined by the method of Narayana and Narasinga Rao Brazil 5 t; Jamaica 3 t; Barbados t; West Africa t; others 1 t. West African Agriculture, 3rd edn, Vol. Tineidae on stored fresh yam tubers in southeast Nigeria. Method-in Africa, yams are normally planted in land freshly-prepared by ‘slash and burn’, in mounds which are usually large enough for one plant, but sometimes for several.

Dioscorea dumetorum – Useful Tropical Plants

Significant difference is indicated by different letters within the same rom. Dioscorex tubers, if unaffected by pests and diseases, may be stored until their natural period of dormancy is broken. Field Crop Abstracts, 25, Les probls d’amoration gtique de l’igname vus ravers celle de Dioscorea trifida L. Influence de quelques caracts des tubercules semences sur la levet le rendement des ignames cultiv.

Subsidiary uses Yams are sometimes dried and made into flour; this is often the case with damaged yams or with yams that are surplus to requirements, essentially as a method of storage. Preservation of certain tropical root and tuber crops.

Guidelines Upcoming Special Issues.

Planting procedure As noted above, the plant is infrequently cultivated. Some yellow fleshed varieties darken during cooking. Yield This species is seldom grown commercially, but field trials in Puerto Rico of sixteen varieties from all over the tropics gave yields ranging from 0.


Potentials of Trifoliate Yam (Dioscorea dumetorum) in Noodles Production

Yams are annual or perennial tuber— bearing and climbing plant with over species, in which only few are cultivated for food and medicine [ 2 ]. Water and Fat Absorption. The processing potential of yams Dioscorea spp. Journal of Agriculture of the University of Puerto Rico, 39 2 One gram of noodle was dissolved with distilled water to a total volume of 40 ml using a weighed 50 ml graduated centrifuge tube. Primary product Tubers-which have white or pale-yellow, dioscogea, highly toxic flesh.

Journale d’Agriculture Tropicale et de Botanique Appliqu 3, Handbook of Tropical Foods Chan, H. Any excess potassium permanganate is removed by treating the starch milk with sulphur dioxide.

The supernatant was decanted into a pre-weighed moisture can.

Rico ; me amarillo Sp. Experimental Agriculture, 8, ; Studies on white yam Dioscorea rotundata. Anthocyanins of Dioscorea alata L. Nematodes in stored yams. Dipscorea containing plants.

Effect of cooking on the nutritional and phytochemical components of trifoliate yam Dioscorea dumetorum.

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