Changes in macrominerals, trace elements and pigments content during lettuce (Lactuca sativa L.) growth: Influence of soil composition

• Tipo: Artigo em Revista Científica Internacional
• Data: 2014

Autores

Edgar Pinto (Autor) Outra; Agostinho A Almeida (Autor) FFUP; Ana A R M Aguiar (Autor) FCUP; Isabel M P L V O Ferreira (Autor) FFUP

Revista

Título: Food Chemistry

Vol. 152

Páginas: 603-611

ISSN: 0308-8146

Editora: Elsevier

Indexação

ISI Web of Knowledge - 54 Citações

Scopus - 55 Citações

Current Contents

Classificação Científica

FOS: Ciências agrárias > Outras ciências agrárias

CORDIS: Ciências Naturais > Ciências agrárias > Produtos agrícolas > Produtos alimentares

Outras Informações

ID Authenticus: P-008-YXM

DOI: 10.1016/j.foodchem.2013.12.023

Abstract (EN): Changes in macrominerals, trace elements and photosynthetic pigments were monitored at 5 stages of lettuce growth. Plants were grown in three experimental agriculture greenhouse fields (A(1), A(2) and A(3)). Soil composition was also monitored to understand its influence on lettuce composition. In general, the content of macrominerals, trace elements, chlorophylls and carotenoids decreased during lettuce growth and consequently, high nutritional value was observed at younger stages. A(2) lettuces showed an increase of Fe, Al, Cr, V and Pb due to the different soil physicochemical parameters. Multiple linear regression analysis with stepwise variable selection, indicated that soil characteristics, namely, pH(Cacl(2)) for Fe and Cr, silt and fine-sand for Al and V, OM for Al and Pb, coarse-sand and CEC for Cr, had a key role determining element bioavailability and plant mineral content. Thus, lettuce nutritional value was strongly dependent of growth stage and soil characteristics.

Idioma: Inglês

Tipo (Avaliação Docente): Científica