Feasibility of Producing Acceptable Carotene and Energy Rich Taro Crisps with 
 Deep Palm-Oil Frying in Nigeria

Ukpabi, U. J.; Chijioke, Ugo; Mbanaso, E. N. A.

doi:10.3923/pjn.2013.811.814

Cited by 5 publications

(3 citation statements)

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“…Taro leaves, petioles and flowers are good sources of essential vitamins and minerals and are consumed as vegetables in many cultures in addition to various ornamental, ethno-botanic and traditional uses (Dastidar, 2009;Anon, 2011). Researchers have confirmed other potentials of taro (Ubalua et al, 2016) including its uses as carbohydrate adjunct in energy food drinks (Eneh, 2013), agro-industrial raw material for pharmaceuticals (Ferguson et al, 1992;Mweta et al, 2008;Kundu et al, 2012), confectionery (Ukpabi et al, 2013) and livestock industries (Anigbogu,1995).…”

Section: Introductionmentioning

confidence: 87%

Severity of Phytophthora leaf blight disease and susceptibility of two local varieties of Colocasia to Phytophthora colocasiae Raciborski in Nsukka zone of South Eastern Nigeria

Ugwuja¹,

Onaebi²,

Chiejina³

et al. 2021

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Leaf-blight disease of Colocasia caused by Phytophthora colocasiae Raciborski has been a serious impediment to cocoyam production in Nigeria. Disease severity and susceptibility of the two most cultivated local varieties “Ugwuta” (Colocasia esculenta var. antiquorum) and “Nkashi Colocasia esculenta var. esculenta) were investigated. Disease severity was visually estimated as the percentage leaf surface affected by blight, lesion or lesion-related chlorosis for each leaf of a plant using a seven-point scale of 0, 5, 10, 25, 50, 75 and 100% in three locations: Ede-Oballa, Nsukka Urban and Obukpa. Susceptibility was assessed on 2 months old potted plants of each variety inoculated with a 7-day old culture of P. colocasiae. Diameters of lesions on inoculated leaves were recorded from the 3rd - 8th day after inoculation. Data on severity were subjected to ANOVA and susceptibility of the varieties was compared with t-test. Results revealed significant LSD=4.96 (0.05) and varying degrees of leaf blight severity among varieties and locations. Variety antiquorum had significantly higher severities of 42.08, 46.40 and 47.42% at Ede-Oballa, Nsukka Urban and Obukpa respectively, compared to 34.85, 36.55 and 28.19% recorded by var. esculenta at these locations, respectively. Similarly, var. antiquorum had greater lesion diameter ranging from 0.65±0.07 cm - 3.70±0.14 cm and average diameter of 2.4±0.16cm compared to var. esculenta which had 0.41±0.14cm - 3.12±0.19 cm and average diameter of 1.80±0.16. This research has shown that varieties and locations affect the severity and susceptibility of Phytophthora leaf blight disease. This could be a guide to farmers having known that var. esculenta is less severe to Phytophthora leaf blight disease.

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Section: Introductionmentioning

confidence: 87%

Severity of Phytophthora leaf blight disease and susceptibility of two local varieties of Colocasia to Phytophthora colocasiae Raciborski in Nsukka zone of South Eastern Nigeria

Ugwuja¹,

Onaebi²,

Chiejina³

et al. 2021

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“…The oxalate content of WEPs was calculated using the [ 20 ] method. The following 3 steps were included within the procedure:…”

Section: Methodsmentioning

confidence: 99%

Antioxidant Activity and Anti-Nutritional Factors of Selected Wild Edible Plants Collected from Northeastern Ethiopia

Adamu

Asfaw

Demissew

et al. 2022

Foods

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In Ethiopia, wild edible plants (WEPs) offer a natural food supply for humans to alleviate food insecurity and hunger. Despite the extensive usage of WEPs in Ethiopia, there have been few investigations on their nutritional composition. Our study aimed to evaluate the antioxidant activity and anti-nutritional factors of the most commonly consumed WEPs in Northeastern Ethiopia. The antioxidant parameters including total phenol, total flavonoid, 2,2-diphenyl-1-picrylhydrazyl (DPPH) and Ferric Antioxidant Power (FRAP) assay contents and the anti-nutritional parameters including oxalate, phytate and tannin contents of the selected seven WEPs were evaluated using standard food analysis techniques. The total phenol (mg GAE/100 g) and total flavonoid (mg QE/100 g) content of WEPs resulted in ranges of 0.79–17.02 and 2.27–7.12, respectively. The antioxidant activity revealed that leaves of Amaranthus hybridus and Rumex nervosus have the highest DPPH and FRAP value, scavenging 50% of free radicals under 50 µg/mL. Non-food values resulted in the respective ranges of 3.37–11.73 mg/100 g oxalate, 16.31–165 µg/100 g phytate and 1.38–5.49 mg/100 g tannin. The investigation indicates that the antioxidant activity of WEPs under research was higher than common crops, and the non-food values were laid in the safe limit, indicating that these might be used for making more healthy and nutritious foods.

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“…Taro is a tropical herbaceous aroid commonly known as cocoyam [1][2][3] . It is an ancient traditional tuber crop grown in Nigeria 4,2 and many developing countries of Africa, Asia, Pacific Islands, West Indies, Caribbean and the Mediterranean 5,6 primarily for its underground starchy corms 7 .…”

Section: Introductionmentioning

confidence: 99%

In vitro Control of Phytophthora colocasiae Causing Leaf Blight of Taro (Colocasia esculenta (L.) Schott.) With Selected Botanical Extracts

Ugwuja,

Ehumadu,

Omodamiro

et al. 2024

Asian J. Plant Pathol.

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Background and Objective: Leaf blight incited by Phytophthora colocasiae has been a major challenge impacting on yield and commercialization of taro (Colocasia esculenta (L.) Schott) in Nigeria since 2009. This study evaluated in vitro, the efficacy of selected plant extracts against the causal pathogen. Materials and Methods: Four botanical extracts: Azadirachta indica A. Juss. Eucalyptus camaldulensis Dehn, Senna alata L. and Tithonia diversifolia (Hemsley) A. Gray were tested in vitro for their fungi toxic effects on radial growth and mycelia dry weight of the pathogen at 5, 10 and 20 mg/mL of each extract. Ridomil (0.67 mg/mL) and zero treatment were set along tests and treatments were replicated thrice in a Completely Randomized Design. Data were subjected to analysis of variance at a 95% confidence interval using the SPSS package and significant differences among means were compared using Duncan's Multiple Range Test (DMRT). Results: All the extracts exhibited significantly varying degrees of inhibition in the radial growth and mycelia dry weight tests. Percentage inhibition increased as the concentration increased. Azadirachta indica and S. alata extracts at 20 mg/mL inhibit 100 and 97.13% radial growth, respectively and were significantly (p<0.05) superior to 40.00 and 31.81% caused by T. diversifolia and E. camaldulensis, respectively. Complete (100%) inhibition of mycelia dry weight was obtained with S. alata and T. diversifolia extracts at all the selected concentrations while A. indica and E. camaldulensis showed high inhibition at some concentrations. Conclusion: These extracts have strong inhibitory effects against P. colocasiae and are comparable to the synthetic fungicide Ridomil, therefore, their exploration in the management of TLB is strongly advocated.

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Feasibility of Producing Acceptable Carotene and Energy Rich Taro Crisps with Deep Palm-Oil Frying in Nigeria

Cited by 5 publications

References 1 publication

Severity of Phytophthora leaf blight disease and susceptibility of two local varieties of Colocasia to Phytophthora colocasiae Raciborski in Nsukka zone of South Eastern Nigeria

Severity of Phytophthora leaf blight disease and susceptibility of two local varieties of Colocasia to Phytophthora colocasiae Raciborski in Nsukka zone of South Eastern Nigeria

Antioxidant Activity and Anti-Nutritional Factors of Selected Wild Edible Plants Collected from Northeastern Ethiopia

In vitro Control of Phytophthora colocasiae Causing Leaf Blight of Taro (Colocasia esculenta (L.) Schott.) With Selected Botanical Extracts

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