UV-visible scanning spectrophotometry and chemometric analysis as tools for carotenoids analysis in cassava genotypes (Manihot esculenta Crantz)

J Integr Bioinform. 2015 Oct 21;12(4):280. doi: 10.2390/biecoll-jib-2015-280.

Abstract

In this study, the metabolomics characterization focusing on the carotenoid composition of ten cassava (Manihot esculenta) genotypes cultivated in southern Brazil by UV-visible scanning spectrophotometry and reverse phase-high performance liquid chromatography was performed. Cassava roots rich in β-carotene are an important staple food for populations with risk of vitamin A deficiency. Cassava genotypes with high pro-vitamin A activity have been identified as a strategy to reduce the prevalence of deficiency of this vitamin. The data set was used for the construction of a descriptive model by chemometric analysis. The genotypes of yellow-fleshed roots were clustered by the higher concentrations of cis-β-carotene and lutein. Inversely, cream-fleshed roots genotypes were grouped precisely due to their lower concentrations of these pigments, as samples rich in lycopene (red-fleshed) differed among the studied genotypes. The analytical approach (UV-Vis, HPLC, and chemometrics) used showed to be efficient for understanding the chemodiversity of cassava genotypes, allowing to classify them according to important features for human health and nutrition.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Food Analysis*
  • Genotype*
  • Humans
  • Manihot / chemistry*
  • Manihot / genetics
  • Plant Roots / chemistry*
  • Plant Roots / genetics
  • Spectrophotometry, Ultraviolet
  • beta Carotene / analysis*

Substances

  • beta Carotene