Content of Alpha-, Beta-Carotene, and Dietary Fiber in 18 Sweetpotato Varieties Grown in Hawaii

Huang, An‐Ni; Tanudjaja, L.; Lum, Doman

doi:10.1006/jfca.1999.0819

Cited by 73 publications

(51 citation statements)

References 4 publications

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“…This was also in agreement with the study by Ameny and Wilson (1997). The influence of different processing procedures on the carotene content of orange-fleshed roots have been reported in sweet potato (Huang et al 1999), carrots (Debjani et al 2005), and cassava (Chavez et al 2007). More than 100% retention of carotenoids was reported in Spinach and Winged Bean through steam and water blanching (Dietz et al 1988).…”

Section: Introductionsupporting

confidence: 91%

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Retention of carotenoids in orange-fleshed sweet potato during processing

2011

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The retention of carotenoids was studied in the storage roots of ten sweet potato clones possessing different intensities of dark orange-flesh colour in four different processing methods-oven drying, boiling, sun drying and frying. The results indicated that the extent of retention varied with the method of processing. The highest retention was observed in oven drying (total carotenoids 90%-91% and β-carotene 89%-96%) followed by boiling (total carotenoids 85%-90% and β-carotene 84%-90%) and frying (total carotenoids 77%-85% and β-carotene 72%-86%). The lowest retention of total carotenoids (63%-73%) and β-carotene (63%-73%) was recorded in the sun drying method.

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Section: Introductionsupporting

confidence: 91%

“…Carotenoids have been linked with the enhancement of immune system and decreased risk of degenerative diseases such as cardiovascular problems, age-related macular degeneration and cataract formation (Byers and Perry 1992). Sweet potato is also a rich source of provitamin A, vitamin B1 (Thiamin) and vitamin C (Huang et al 1999).…”

Section: Introductionmentioning

confidence: 99%

Retention of carotenoids in orange-fleshed sweet potato during processing

2011

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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%

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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“…Orange-fleshed sweetpotatoes are rich in ␤-carotene (Table 36.2). A wider range of ␤-carotene content in cooked orange-fleshed sweetpotatoes, 6.7-16.0 mg/100 g fwb, has been reported by different investigators (Huang et al 1999;Bovell-Benjamin 2007). The sweetpotato carotenoids exist in an all trans configuration, which exhibits the highest provitamin A activity among the carotenoids.…”

Section: Nutritional Composition Of Sweetpotatoesmentioning

confidence: 98%

“…Dietary fiber in sweetpotato roots range from 2 to 4% of fresh weight (Huang et al 1999). Starch comprises 60-70% of the total dry matter, but the values vary for different types of cultivars.…”

Section: Nutritional Composition Of Sweetpotatoesmentioning

confidence: 99%