Influence of Age, Farming Site, and Boiling on Pro-Vitamin A Content in Sweet Potato (Ipomoea batatas(L.) Lam.) Storage Roots

K'Osambo, L.; Carey, Edward E.; Misra, Arup Kumar; Wilkes, Jonathan M.; Hagenimana, V.

doi:10.1006/jfca.1998.0591

Cited by 75 publications

(67 citation statements)

References 23 publications

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“…The findings also reinforced the fact that root fresh colour is an indicator of relative -carotene levels with orange and cream showing highest and lowest levels, respectively. The results complement findings by K'osambo et al (1998K'osambo et al ( ), Picha (1985 and Huang et al (1999) which revealed that -carotene are largely responsible for the orange flesh colour in sweet potato. Level of -carotene in genotype Zondeni (13.93 mg/100 g at 5 MAP) is comparatively among the highest in eastern and southern Africa Region (K'osambo et al, 1998;Manrique and Herman, 2000).…”

Section: Effect Of Genotype and Flesh Colour On -Carotene Contentsupporting

confidence: 80%

“…The results complement findings by K'osambo et al (1998K'osambo et al ( ), Picha (1985 and Huang et al (1999) which revealed that -carotene are largely responsible for the orange flesh colour in sweet potato. Level of -carotene in genotype Zondeni (13.93 mg/100 g at 5 MAP) is comparatively among the highest in eastern and southern Africa Region (K'osambo et al, 1998;Manrique and Herman, 2000). Andrade et al (2009) showed in their study that there is a strong negative correlation between dry matter and -carotene content in sweet potato; however, Zondeni (31.33%), in this study had fairly high and acceptable levels of dry matter (Table 1).…”

Section: Effect Of Genotype and Flesh Colour On -Carotene Contentsupporting

confidence: 80%

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Analysis of micronutrients variations among sweet potato (Ipomoea batatas [L.] Lam) genotypes in Malawi

Chipungu¹,

Changadeya²,

Ambali³

et al. 2017

J. Agric. Biotech. Sustain. Dev.

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Sweet potato (Ipomoea batatas [L.] Lam) is an important root crop in Malawi and Sub-Saharan Africawhere micronutrient deficiency is an eminent health problem. Using 15 sweet potato genotypes grown in a randomized complete block design at Bvumbwe Research Station, a study was undertaken to determine the extent of variability of selected micronutrients in the genotypes as influenced by storage root age and peeling. Analysis of variance (ANOVA) showed significant (p≤ 0.01) variability among genotypes for dry mater, β-carotene, ascorbic acid levels and reduction of β-carotene due to peeling across all ages. Significant (p ≤ 0.05) variations in zinc, iron and copper were also observed among all genotypes. Peeling reduced β-carotene, ascorbic acid levels, iron, zinc and copper content while late harvesting resulted in low iron, zinc and copper. Therefore, 5 months after planting (MAP) and 4 MAP are recommended for high levels of β-carotene and ascorbic acid and iron, zinc and copper, respectively. Ten genotypes exhibited acceptable levels of dry mater of ≥30%. Zondeni (10.9 mg/100 g, WW) and Babache (23.84 mg/100 g, WW) had highest levels of β-carotene and ascorbic acid, respectively. Mzungu displayed the highest levels of Iron (0.67 mg/100 g, DW) and zinc (0.63 mg/100 g, DW) while Yoyera (0.61 mg/100 g, DW) had the highest levels of copper. Variations of various traits entail potential to breed for higher levels of micronutrients.Key words: Sweet potato, genotypes, β-carotene, ascorbic acid, iron, zinc, copper, peeling, storage root age. INTRODUCTIONApproximately one billion (795 million) people from developing countries suffer from hunger, malnutrition and poverty (FAO, 2015). Various reasons including climate change, environmental degradation, dwindling of natural resources and an ever increasing population have been implicated. In 2015, global population was estimated at 7.3 billion and was expected to climb up to about 9.7 billion in 2050 when nearly 90% of the population will be in resource poor developing countries of Asia, Africa and Latin America (James, 2015). The UN population projection shows that the trend will continue until the end of this century when the global population will reach 10.8 billion or more (UN DESA, 2015). Such increases in global population will result in ever increasing number of food in-secure people, who by definition are people with no physical and economic access to enough safe and nutritious food which meets their dietary needs at all times (FAO, 1996). However, over 3 billion people suffer from a different, sneakier form of hunger than the simple lack of sufficient quantities of foodstuffs referred to as micronutrient malnutrition or "hidden hunger" which is caused by a lack of food of sufficient dietary quality (Kennedy et al., 2003; FAO, 2013). Monotonous diets which are a hallmark of Sub-Saharan countries, based on cereals and other starchy staple foods frequently fail to deliver sufficient quantities of essential minerals and vitamins like Iodine, Iron, Zinc and Vitamin A (D...

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Section: Effect Of Genotype and Flesh Colour On -Carotene Contentsupporting

confidence: 80%

Section: Effect Of Genotype and Flesh Colour On -Carotene Contentsupporting

confidence: 80%

Analysis of micronutrients variations among sweet potato (Ipomoea batatas [L.] Lam) genotypes in Malawi

Chipungu¹,

Changadeya²,

Ambali³

et al. 2017

J. Agric. Biotech. Sustain. Dev.

View full text Add to dashboard Cite

show abstract

“…Em geral, quanto mais clara for a polpa da batata, menor o conteúdo de carotenóides. K'OsAMBO K'OsAMBO et al [14], em estudo feito no �uênia, encontraram valores [14], em estudo feito no �uênia, encontraram valores de β-caroteno em batata-doce de polpa branca menores que 10 µg/g, enquanto para as de polpa laranja, este valor foi de 80 µg/g, em média.…”

Section: -Resultados E Discussãounclassified

Pró-vitaminas A em hortaliças comercializadas no mercado formal e informal de Viçosa (MG), em três estações do ano

Campos¹,

Pinheiro-Sant’Ana²,

Souza³

et al. 2006

Ciênc. Tecnol. Aliment.

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“…Positive correlation has been established between all-trans-β-carotene content and a value of seven different orange fleshed sweet potato varieties [1,29]. Also, orange-and yellow-fleshed cultivars recorded higher total carotenoid, β-carotene, and β-carotene-5,6-monoepoxide contents than cream-and white-fleshed cultivars [30]. It has been reported that Beta-carotene, a major precursor of Vitamin A, serves as an important nutritional component in foods, as [31] and that it has anti-cancer, anti-aging, and anti-ulcer properties, due to their antioxidative activity [1].…”

Section: Hunter L a B Colour Evaluation Of Sweet Potato Floursmentioning

confidence: 99%

Effect of Cultivar on Quality Attributes of Sweet Potato Fries and Crisps

Ali¹,

Falade²,

Akingbala³

2012

FNS

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Effect of cultivar differences on physical and proximate composition, and sensory attributes of sweet potato fries and crisps were determined. Physicochemical and colour characteristics of sweet potato flours and starches were evaluated using Rapid Visco Analyser and Hunter L a b, respectively. Chroma, colour intensity and hue angle were calculated. Objective and sensory parameters of sweet potato fries and crisps were evaluated. Proximate and pasting properties were typical of sweet potato tubers, flour and starches. Maltose (0.05% -0.08%), sucrose (0.05% -1.60%) contents of sweet potato were significantly different (p < 0.05). Amylose and amylopectin contents of sweet potato starches were 19.5% -24.6% and 75.4% -80.5%, respectively. Swelling power and solubility were 2.42 -2.88 and 0.11 -0.32, 5.01 and 0.02 -3.00 for flours and starches, respectively. Lovers name fries showed significantly better appearance, while Big Red and Black Vine fries showed similar sensory scores. No significant difference occurred in all the sensory attributes of crisps of the sweet potato cultivars.

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Influence of Age, Farming Site, and Boiling on Pro-Vitamin A Content in Sweet Potato (Ipomoea batatas(L.) Lam.) Storage Roots

Cited by 75 publications

References 23 publications

Analysis of micronutrients variations among sweet potato (Ipomoea batatas [L.] Lam) genotypes in Malawi

Analysis of micronutrients variations among sweet potato (Ipomoea batatas [L.] Lam) genotypes in Malawi

Pró-vitaminas A em hortaliças comercializadas no mercado formal e informal de Viçosa (MG), em três estações do ano

Effect of Cultivar on Quality Attributes of Sweet Potato Fries and Crisps

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