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

• Type: Article in International Scientific Journal
• Date: 2014

Authors

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

Journal

Title: Food Chemistry

Vol. 152

Pages: 603-611

ISSN: 0308-8146

Publisher: Elsevier

Indexing

ISI Web of Knowledge - 54 Citations

Scopus - 55 Citations

Current Contents

Scientific classification

FOS: Agrarian Sciences > Other Agrarian Sciences

CORDIS: Natural sciences > Agrarian Sciences > Agricultural products > Food products

Other information

Authenticus ID: 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.

Language: English

Type (Professor's evaluation): Scientific