It was first isolated from dioscorea hirsute synonymous with dioscorea hirsuta by boorsma in 1894 and obtained in a crystalline form by schutte in 1897. Tubers are poisonous but consumed at the time of severe food shortage by some ethnic groups. Toxicological studies of nami, dioscorea hispida, dennst. Two isoquinuclidine alkaloids of a tropical yam, dioscorea. The plant is native to africa, southern asia, maldives, and northern australia.
Rhizome of a tropical yam, dioscorea hispida schlussel, which has been used as a traditional pest control agent in the philippines, was extracted with methanol and the extract was further separated into alkaloid and nonalkaloid fractions by thin layer chromatography. However, it is not a legal authority for statutory or regulatory purposes. The common name for the genus, yams, will be used when discussing information applicable to 2 or more of the above species. Dioscorea hispida in kew science plants of the world online. Dioscorine is generally isolated in tandem with other alkaloids such as dioscin but is usually the most potent toxin in the mixture. It has been used as a monkey poison in some african countries, and as an arrow poison to aid in hunting in several parts of asia. Dioscorea is a genus of flowering plants, and some dioscorea species are known and used as a source for the steroidal sapogenin diosgenin. This ethnobotanical study was conducted to document local knowledge and potentials of dioscorea hispida dennst. Plants profile for dioscorea hispida intoxicating yam. Research article analysis and identification of phenolic compounds in dioscorea hispida dennst sudawadee theerasin1 and a. Ars germplasm resources information network dihi7 integrated taxonomic information system dihi7. A read is counted each time someone views a publication summary such as the title, abstract, and list of authors, clicks on a figure, or views or downloads the fulltext. The following 15 files are in this category, out of 15 total.
Dioscorine is an alkaloid toxin isolated from the tubers of tropical yam on several continents. Insecticides or repellents can also be used to control and avoid mosquitoes in these areas. The tubers were washed to remove dirt, sliced and blanched for 5 min. It is a convulsant, producing symptoms similar to picrotoxin, with which it shares a similar mechanism of action.
Characterization of physicochemical and functional. It is named after the ancient greek physician and botanist dioscorides. Dioscorea is a genus of over 600 species of flowering plants in the family dioscoreaceae, native throughout the tropical and warm temperate regions of the world. Several species of this genus serve as staple crops in many parts of the world mabberley dj et al.
Pdf internal transcribed spacer its as a molecular marker. Mar, 2020 dioscorea hispida in kew science plants of the world online. Plant in fertile, welldrained soil, in full sun or partial shade. Angophora hispida dwarf apple description an attractive native large shrub to small tree with profuse flowers in summer size small sized native tree. Dioscorea bulbifera aerial yam, air potato pfaf plant database. The record derives from wcsp data supplied on 20120323 which reports it as an accepted name record 240268 with original publication details. Flowers regular, small or minute, usually monoecious or dioeccious, rarely bisexual in spikes. Air potato dioscorea bulbifera 2 distribution native to tropical asia and subsaharan africa, air potato was spread by ancient polynesians throughout much of the south pacific where it is now considered invasive. Download and install the software on your computer. Air potato dioscorea bulbifera 3 three other introduced species of dioscorea may be encountered in florida. The plant is called kywae and its very acrid root is eaten by the karens in times of scarcity.
Possibility on agriculture mechanization for tropical yam. A nonalkaloidal extract obtained from rhizomes of dioscorea hispida was isolated and purified by thin layer chromatography. Possibility on agriculture mechanization for tropical yam dioscorea hispida to design and model the handheld harvester for ubi gadong, the criteria of the land character, size and weight need to be considered and mohd et al. Once windows has finished indexing your pdfs and their contents, youll be able to search for text inside multiple pdf files at once use seekfast to search pdf files. It was brought to the americas from africa during the slave trade. Dioscorea spinosa burm dioscorea triphylla l hamatris triphylla l. Monopole antenna technique for determining moisture content. Pdf merge combine pdf files free tool to merge pdf online. Itis taxonomy is based on the latest scientific consensus available, and is provided as a general reference source for interested parties. Description dioscorea batatas is a twining herbaceous.
Institute of agriculture and forestry, university of tsukuba 111, tennodai, tsukuba, ibaraki 3058572, japan. Upright to broaddomed in shape but variable height. Dioscorea bulbifera or commonly known as aerial yam is a perennial, nonspiny, climbing plant up to 10 m long. Small tubers can be cut into 2 4 sections, larger ones into 6 8 sections. While every effort has been made to provide the most reliable and uptodate information available, ultimate legal requirements with respect to species are contained in. Detailed coverage of invasive species threatening livelihoods and the environment worldwide. All species are easy to grow from seeds, bulbils little tubers, tubers, or cuttings. Dioscorea root extract benefit and side effects by ray sahelian, m. Despite known toxicity, in thailand, where it is referred to as kloi, tubers are used to make a dessert called kao nuew kloi. Wo2014126486a1 pharmacological indications and uses of. The sedative effect is comparable to sodium barbiturate, a potent sedative and anaesthetic, with d. Dioscorea batatas is the taxonomic name generally used in the united states29.
Diosgenin is a steroidal saponin, which is extracted from the root of wild yam dioscorea villosa and other species. Banaag a, honda h, shono t 1997 effects of alkaloids from yam, dioscorea hispida schlussel, on feeding and development of larvae of the diamondback moth, plutella xylostella lepidoptera. Dioscorea hispida is a plant whose tuber is used for food in the tagalog provinces and other parts of the philippines under the name nami. The twining stems produce aerial axillary bulbils that are edible. Dioscorine is a neurotoxin that acts by blocking the nicotinic acetylcholine receptor.
The product will need to be light enough for easy handling and bringing to field site of the jungle. Other uses none known propagation seed not normally used to propagate this species. The vast majority of the species are tropical, with only a few species extending into temperate climates. This study was designed to determine whether dioscorea supplementation could increase serum dehydroepiandrosterone sulfate dheas in humans and modulate lipid levels in older people. Philippine herbal medicines an illustrated compilation of philippine medicinal plants by dr godofredo stuart, with botanical information, chemical properties, folkloric uses and reserach studies. Launch the software, enter in your search term into the. However, there are difficulties in identifying and recognizing d. Dioscorea hispida is a source of food and also has important medicinal values. Pdf internal transcribed spacer its as a molecular. It has frequently caused accidental food poisoning and has been used with criminal intent compare blighia sapida, the akee.
Please note that this is a trial program and may end. Dioscorea bulbifera is an evergreen perennial climber growing to 10 m 32ft by 0. Dioscorine content in dioscorea hispida dried tubers in. Development of automatic alkaloid removal system for dioscorea hispida as shown in figure 1 and 2 can replace for automatic operation using on off solenoid valve while the peripheral interface controller pic are use for controlling input and output signal from sensor, solenoid valve and motor pump. The tubers weighed between 1016 kilograms and each tuber consisted of 45 lobes. This name is the accepted name of a species in the genus dioscorea family dioscoreaceae.
Dioscorea is a genus in the monocotyledonous family dioscoreaceae sautour m et al. Pdf phytochemical screening of ubi gadong dioscorea. Seekfast also lets you easily search for your terms in various file types including pdf. Enjoy unrestricted access to all content and features, including. The record derives from wcsp which reports it as an accepted name record 240268 with original publication details. Chemical fingerprint analysis and quantitative determination.
Monopole antenna technique for determining moisture. Monopole antenna technique for determining moisture content in the dioscorea hispida tubers mohamad faiz 3zainuddin1,2, zulkifly abbas2, mardiah hafizah muhammad hafizi, mohamad ashry jusoh2, mohd hudzari hj razali4, 1department of environmental sciences, faculty of environmental studies, universiti putra malaysia, 43400. You can merge pdfs or a mix of pdf documents and other files. Once you merge pdfs, you can send them directly to your email or download the file to our computer and view. Hosted by the usgs core science analytics and synthesis. It is a highly invasive plant included in the global compendium of weeds randall, 2012, and which creates.
Each fraction was examined to evaluate feeding deterrent activity, developmental effects and toxicity against larvae of the. Access is allocated within two business days of purchase and lasts one year. How to search for text inside multiple pdf files at once. They are eaten only after having been steeped in water for 36 hours. Dioscorea batatas is called chinese yam, cinnamon yam, wild yam, or common yam. Leaflets subequal, to 17 x 12 cm, obovate, abruptly sharply acuminate at apex, cuneate to the base, shortly petiolulate, ribs 5, prominent intercostae coarsely reticulate, thinly hispid.
The board of trustees of the royal botanic gardens, kew. Dioscorea codonopsidifolia kamik dioscorea digitata mill dioscorea globifera r. Three kloi tubers dioscorea hispida were collected from the forest in the chaibadan district of lopburi province. Click add files and select the files you want to include in your pdf. Proximate analysis of dioscorea hispida tubers, collected from five locations around leuser ecosystem in aceh province, showed variations amongst samples.
Dioscorea is a yam steroid extract used in commercial steroid synthesis and consumed by people. Rearrange individual pages or entire files in the desired order. Dioscorea sansibarensis pax section macroura, zanzibar yam. Even though these analytical methods have been published for dioscorea species, todate no report employing uhplcelsd for fingerprinting and quantification of these twelve steroidal saponins and diosgenin from. Kunth helmia hirsuta blume kunth homonyms dioscorea hispida. The present invention, comprised of the crude aqueous extract of dioscorea hispida, an indigenous plant from the philippines, has been shown to have sedative, antiinflammatory, and analgesic effects. Pdf pharmacological indications and uses of preparations. Standard aoac method for proximate analysis of the fresh weight showed that the water content varied between 15. It is also synonymous with dioscorea oppositifolia. It has a woody, tuberous rootstock and heartshaped broad leaves.
Once files have been uploaded to our system, change the order of your pdf documents. The present invention, comprised of the crude aqueous extract of dioscorea hispida, an indigenous plant from the philippines, has been shown to have sedative, antiinnammatory, and analgesic effects. Each block will be separated at about two meters from each other and will be planted with three tre es in each row for two rows in a block plot. How to merge pdfs and combine pdf files adobe acrobat dc. Page designed through the cooperative efforts of interagency itis teams.
Introduction nearly 75% of all dengue cases worldwide occur in asia and the pacific. Dhea is a steroid which declines with age, but without known activity. The root is edible and was introduced into france as a garden plant but is now forgotten, although it is perhaps valuable. Two isoquinuclidine alkaloids of a tropical yam, dioscorea hispida dioscoreaceae as antifeedant and toxin against lepidopteran insects. Yam is the common name for rhizomes of plants from the genus dioscorea which are widely distributed all over the world. Distribution and morphodiversity analysis of genus. Effects of alkaloids from yam, dioscorea hispida schlussel. Nami dioscorea hispida is one of the intoxicating yams in the philippines studied for its. The poison ordinarily is removed, or removal is attempted, img 2t3588. Development of automatic alkaloid removal system for.