Effect of cooking on the proximate composition of seven accessions ofColocasia esculenta(L.) Schott tubers growing in South Africa

Abstract

Colocasia esculenta (L.) Schott (cocoyam) is cultivated mainly for its edible tubers. The effect of cooking the tubers on the proximate composition of seven accessions (UFCe1-UFCe7) of the crop growing in South Africa was investigated. When compared with the uncooked, the ash and crude fibre contents of the accessions significantly decreased after cooking. The moisture content, crude protein, crude lipid, carbohydrate and caloric contents increased with cooking in all the accessions, except UFCe1 and UFCe5 where the crude lipid content reduced. The results indicate that cooking enhanced the carbohydrate, energy and protein contents of the tubers. They further showed that the tubers could be used for allergic infants, old people and invalids since the fibre contents were still appreciably high despite the slight reduction after cooking the tubers.

Effect of Cooking Temperature on Mineral Content and Anti-nutritional Factors of Yam and Taro Grown in Southern Ethiopia

“…This may be due to leaching of soluble minerals and damaging of cell wall of the plant cell resulting in leaching of not only the dissolved ones but also those dispersed in the solution. This result is in good agreement with the observation reported in literature [31]. Accordingly this may be due to water absorption during cooking leading to dilution and, hence, low amount of the ash.…”

Influence du mode de cuisson sur la valeur nutritionnelle de <i>Solanum macrocarpum, Amaranthus hybridus</i> et <i>Ocimum gratissimum</i>, trois légumesfeuilles traditionnels acclimatés au Bénin

“…Les valeurs obtenues dans cette étude sont largement inférieures à celles obtenues par Lewu et al (2009) (FNB, 2001). Les protéines sont par ailleurs indispensables à la croissance des enfants et des adolescents, ainsi qu'à la formation du foetus chez les femmes enceintes.…”

“…Les protéines sont par ailleurs indispensables à la croissance des enfants et des adolescents, ainsi qu'à la formation du foetus chez les femmes enceintes. Les légumes-feuilles tropicaux peuvent alors contribuer à assurer la sécurité alimentaire des populations pauvres (Dansi et al, 2008;Afolayan et al, 2009). …”

Effect of cooking on the mineral contents and anti-nutritional factors in seven accessions of Colocasia esculenta (L.) Schott growing in South Africa

“…The knowledge obtained from this study will be useful in elucidating the complete nutritional information of these tubers when combined with the results obtained from previous work on the proximate composition of these accessions (Lewu et al, 2009a).…”