Compositional Changes of Sweetpotato as Influenced by Cultivar, Harvest Date and Cooking

Retention of carotenoids in orange-fleshed sweet potato during processing

“…Products like sweet potato juice or salads could be recommended for maximum absorbance of carotene content in diet. The people who were traditionally dependent on the consumption of white-fleshed local cultivars are unaware of the nutritive value of orangefleshed sweet potato as most of the varieties selected by the consumers are based on the best taste, flavour and texture rather than those having a better nutrient profile (Chattopadhyay et al 2006). The reduction of carotenoids in the sun-drying process may be due to the detrimental effect of the sun-light on the stability of carotenoid pigment.…”

Crops that feed the world 5. Sweetpotato. Sweetpotatoes for income and food security

“…The crop is high in nutritive value (Table 3), outranking most carbohydrate foods in vitamins, minerals, dietary fibre and protein content (Chattopadhyay et al 2002b(Chattopadhyay et al , 2006aLebot 2009). Orange-and yellow-fleshed types have been recognized as good sources of carotene (Mitra et al 2010;Bechoff et al 2011;Burri 2011) and both yellow and light fleshed types are good sources of vitamin C (Chattopadhyay et al 2002a;Fig.…”

“…Regular consumption of OFSP significantly improved the vitamin A status among young children in Mozambique (Low et al 2007). Current OFSP varieties contain high concentrations of ß-carotene (up to 23,100 μg/ 100 g FW; Bovell-Benjamin 2007; Kidmose et al 2007;Ofori et al 2009) and high retinol equivalents (Chattopadhyay et al 2006a), which appear to be more bio-available than those in dark, leafy greens (de Pee et al 1998). Such varieties could prevent vitamin A deficiency in many fooddeficit countries and areas such as the tribal-dominant areas of India (Burri 2011;Nath et al 2005).…”

“…The time taken by cultivars to attain the maximum level of carotene varied (K'Osambo et al 1998). However, Chattopadhyay et al (2006a) and Mitra et al (2010) showed that β-carotene content of most OFSP cultivars increased up to 105 days and, considering productivity, nutritional quality and consumer acceptability, suggested that the crop should be harvested at this time.…”

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“…The chemical compositions of sweet potatoes are mainly of starches, sugars and water, three components that are transferred to the root during tuber development and growth. This chemical constituents of orange fleshed sweet potatoes varies among the genotypes [5].…”