Data/hora: 23/05/2024 10:54:48

Biblioteca(s): | Epagri-Sede.
Data corrente: | 07/05/2014
Data da última atualização: | 07/05/2014
Autoria: | UARROTA, V. G.; MORESCO, R.; COELHO, B.; NUNES, E. C.; PERUCH, L. A. M.; NEUBERT, E. O.; ROCHA, M.; MARASCHIN, M.
Título: | Metabolomics combined with chemometric tools (PCA, HCA, PLS-DA and SVM) for screening cassava (Manihot esculenta Crantz) roots during postharvest physiological deterioration.
Ano de publicação: | 2014
Fonte/Imprenta: | Food Chemistry, Londres, v. 161,  p. 67-78, 2014.
Idioma: | Português

Conteúdo:

Cassava roots are an important source of dietary and industrial carbohydrates and suffer markedly from
postharvest physiological deterioration (PPD). This paper deals with metabolomics combined with chemometric
tools for screening the chemical and enzymatic composition in several genotypes of cassava
roots during PPD. Metabolome analyses showed increases in carotenoids, flavonoids, anthocyanins, phenolics,
reactive scavenging species, and enzymes (superoxide dismutase family, hydrogen peroxide, and
catalase) until 3?5 days postharvest. PPD correlated negatively with phenolics and carotenoids and
positively with anthocyanins and flavonoids. Chemometric tools such as principal component analysis,
partial least squares discriminant analysis, and support vector machines discriminated well cassava
samples and enabled a good prediction of samples. Hierarchical clustering analyses grouped samples
according to their levels of PPD and chemical compositions.

Palavras-Chave: | Cassava; Chemometrics; Mandioca; Metabolomics; Postharvest deterioration.
Categoria do assunto: | F Plantas e Produtos de Origem Vegetal
Registro original: | Epagri-Sede (Epagri-Sede)
Exemplares: | Epagri-Sede - (95882-1) - UPC - AP - DD -  -  -  - DIS