A comparative study of effects of storage on basic nutritional composition of two major edible &lt;i&gt;Dioscorea dumentorum&lt;/i&gt; varieties

Ojo, Olusola Samuel; Ojo, J. O.

doi:10.4314/gjpas.v15i3-4.48553

Cited by 6 publications

(10 citation statements)

References 1 publication

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“…Report by Ojo and Ojo (2009) on the mineral composition of the two edible forms were 5.91mg/100g and 4. 01mg/100g for the yellow and white varieties respectively for the stored (6 weeks) samples which is an equivalent of 59.1mg/kg and 40.1mg/kg.…”

Section: Discussionmentioning

confidence: 91%

“…The other two varieties are toxic. The yellowish-white is toxic to animal alone and the white variety is toxic to both animal and man (Ojo & Ojo, 2009). The toxic varieties are not edible but they are commonly used for pharmaceutical or medicinal purposes by African or Asian people ( Mc Anuff, Harding, Omorunyi, Jacobs, Morrison &Asemota, 2003).…”

Section: Introductionmentioning

confidence: 99%

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Determination of Five Heavy Metals in White Yam (Dioscorea Rotundata) and Three- Leaved Yam (Dioscorea Dumetorum) from Farms in Khana, Rivers State

Kalagbor¹,

Adooh²,

James³

2015

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Background: The Niger Delta Region has experienced various levels of pollutions from industries and oil exploration. Studies have revealed that the ongoing pollution is affecting the quality of agriculture produce from this region. Rivers State is one of the states in the Niger Delta and its farmlands have been affected by oil exploration. This study is aimed at determining the levels of five heavy metals (Cu, Fe, Ni, Pb and Zn) in white yam (dioscorea rotundata) and three-leaved yam (Dioscora dumentorum) using AAS. Research Methodology:The samples used for this study were harvested from farms in Zaakpon and Kaani in Khana Local Government area of Rivers State, Nigeria.Results: Concentration of Cu in white yam (11.86mg/kg) and three-leaved yam (8.90mg/kg) harvested from Zaakpon were found to be higher than those from Kaani, whereas Fe concentration in white yam (43.20mg/kg) and three-leaved yam (144.0mg/kg) from Kaani were higher than those from Zaakpon. Ni and Pb concentration were also higher in the samples from Zaakpon while Zn concentrations in the samples from the two farmlands were below acceptable limits. The dietary intake rate ( Conclusion:From the results obtained, it follows that the continued consumption of these crops harvested from the farms will have adverse effects on the consumers. This calls for close monitoring of the farmlands for heavy metal contamination.

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Section: Discussionmentioning

confidence: 91%

Section: Introductionmentioning

confidence: 99%

Determination of Five Heavy Metals in White Yam (Dioscorea Rotundata) and Three- Leaved Yam (Dioscorea Dumetorum) from Farms in Khana, Rivers State

Kalagbor¹,

Adooh²,

James³

2015

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“…The tuber contains fleshy edible part having a yellowish or whitish color which can be boiled and eaten as snacks. Extract from the tubers can be used for the treatment of diabetes mellitus in traditional medicine [48,49]. It has been reported that the tuber is rich in fiber and contains an alkaloid, dioscorentine, which possesses hypoglycemic activity [50,51].…”

Section: Dioscorea Dumetorummentioning

confidence: 99%

Utilization of Starch in Food and Allied Industries in Africa: Challenges and Prospects

Raji¹

2021

Innovation in the Food Sector Through the Valorization of Food and Agro-Food by-Products

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The shortage of food supply has affected the food situation in most developing tropical countries, resulting into a high incidence of hunger and malnutrition. This has also affected the attainment of self sufficiency in starch production for food, pharmaceutical and industrial usage. The review critically appraised the challenges that food and allied industries are facing on the utilization of starch as their major raw material. Information on various conventional and non conventional starch sources were provided, starch forms, properties and recent advances in starch modification methods were discussed. Starch applications in food and allied industries were mentioned and various challenges facing common starch sources were stated. Possibly, utilization of unconventional lesser known crops as starch sources might broadening the present narrow commonly cultivated starch sources, while value addition and good agricultural practices might improve the productivity of conventional starch sources.

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“…The composition of yam tubers vary. Yams are very good sources of carbohydrates, the B group of vitamins and Viamin C (Ojo and Ojo, 2009). The USDA estimates of the nutrient composition of yam compared with the nutrient content of D. opposita is shown in Table 2a.…”

Section: Traditional Uses Of Yamsmentioning

confidence: 99%

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

Ojimelukwe¹

2021

International Journal of Agriculture Environment and Food Sciences

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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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A comparative study of effects of storage on basic nutritional composition of two major edible <i>Dioscorea dumentorum</i> varieties

Cited by 6 publications

References 1 publication

Determination of Five Heavy Metals in White Yam (Dioscorea Rotundata) and Three- Leaved Yam (Dioscorea Dumetorum) from Farms in Khana, Rivers State

Determination of Five Heavy Metals in White Yam (Dioscorea Rotundata) and Three- Leaved Yam (Dioscorea Dumetorum) from Farms in Khana, Rivers State

Utilization of Starch in Food and Allied Industries in Africa: Challenges and Prospects

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

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