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Current perspectives on the Nutrient composition and health benefits of yams (Discorea species)

Year 2021, Volume 5, Issue 2, 179 - 190, 28.06.2021
https://doi.org/10.31015/jaefs.2021.2.7

Abstract

Yams (Discorea spp) are food security crops which serve as invaluable food sources of energy, micronutrients and phytochemicals with numerous health benefits. They show a lot of genetic and compositional diversity. New biologically active compounds are being identified from wild yams. This review focuses on the nutrients, and phytochemicals found in yam species and their health benefits. The B group of vitamins, vitamin C, pro-vitamin A; copper; manganese; isoflavones; steroidal saponins; alkaloids; terpenes; and anthocyanidins are found in different species of yams. Wild yams such as Discorea villosa and Discorea hispida are used in ethnomedicine because of their phytochemical content. Diosgenin, dioscorin, dioscin dihydrodiscorine protodioscin, methyprotodioscin, prosapogenin, epifzelechin, glucopyranoside, phytoestrogen and allantoin are bioactive phytochemicals that may be found in yams. They are valuable as anti-cancer, anti-mutagenic, anti-inflammatory, anti-diabetic, anti-ageing lipid lowering and hepatoprotective agents. Other claims based on traditional uses of yams have not been scientifically substantiated. Dioscorea species are likely to contain other unidentified secondary metabolites. Discorea species with other health promoting bioactive compounds should be identified; modern techniques should be used to extract yet unidentified compounds in Discorea and the food use and health benefits of yam species should be optimized.

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Year 2021, Volume 5, Issue 2, 179 - 190, 28.06.2021
https://doi.org/10.31015/jaefs.2021.2.7

Abstract

References

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Details

Primary Language English
Subjects Food Science and Technology
Published Date June 2021
Journal Section Research Articles
Authors

Phılıppa OJIMELUKWE (Primary Author)
MICHAEL OKPARA UNIVERSITY OF AGRICULTURE, UMUDIKE, NIGERIA
0000-0002-0263-0597
Nigeria


Chijioke MUOASİNAM This is me
Department of Food Science and Technology, Michael Okpara University of Agriculture, Umudike, Abia State, Nigeria
Nigeria


Rachael OMODAMİRO This is me
Post-Harvest Programme, National Root Crops Research Institute, (NRCRI) Umudike, Nigeria
Nigeria

Supporting Institution MICHAEL OKPARA UNIVERSITY OF AGRICULTURE, UMUDIKE, NIGERIA
Project Number NONE
Publication Date June 28, 2021
Application Date February 21, 2021
Acceptance Date May 10, 2021
Published in Issue Year 2021, Volume 5, Issue 2

Cite

APA Ojımelukwe, P. , Muoasinam, C. & Omodamiro, R. (2021). Current perspectives on the Nutrient composition and health benefits of yams (Discorea species) . International Journal of Agriculture Environment and Food Sciences , 5 (2) , 179-190 . DOI: 10.31015/jaefs.2021.2.7