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Application of multidimensional scaling technique to differentiate sweet potato (Ipomoea batatas (L.) Lam) cultivars according to their chemical composition

2015; Elsevier BV; Volume: 46; Linguagem: Inglês

10.1016/j.jfca.2015.10.008

1096-0481

Marcos Hernández Suárez, A. I. Montes Hernández, B. Rodríguez Galdón, Lía Hernández Rodríguez, Cristo Elías Medina Cabrera, Domingo Ríos Mesa, Elena M. Rodríguez Rodríguez, Carlos Dı́az Romero,

Sensory Analysis and Statistical Methods

Proximate composition (moisture, protein, starch, amylose, total dietary fibre, Brix degree, fat, ash, ascorbic acid, phenolic compounds, acidity and pH), minerals (Na, K, Ca, Mg) and trace elements (Fe, Cu, Mn, Zn) were determined in 30 cultivars of sweet potato from the Canary Islands (Spain). There were significant differences between the sweet potato cultivars for all the parameters studied; in addition, both the island of production and the cultivation cycle showed a noteworthy influence on the mineral and trace element composition of the tubers. It is worth mentioning that the consumption of sweet potatoes contributes relatively high intake levels of vitamin C, phenolic compounds and mineral and trace elements (K, Mg, Ca, Mn, Fe and Cu). Application of multidimensional scaling (MDS) correctly classified the sweet potato cultivars according to the island of production and maturation cycle.