Parâmetros climáticos e variação de compostos fenólicos em cevada

Abstract

This study aimed to quantify the phenolic compounds in hydroethanolic extract of cultivar seeds ('BRS Lagoa' and 'MN 743') in two consecutive years of cultivation (2005 and 2006) evaluating the influence of climatic factors in such content. The total phenolic compounds were quantified by Folin-Ciocalteau's method and the levels of rutin and caffeic and ferulic acids by HPLC in the reversed-phase. The concentration of total phenolic compounds ranged from 0.97 to 1.59 mg GA g-1 of barley and the climatic factors during the planting and harvesting influenced the barley content. Caffeic, rutin and ferulic acid were identifi ed and quantifi ed in these cultivars. Assessment of climatic factors on the content of phenolic compounds in barley is of great interest aiming for their nutritional importance and recommendations of cultivars with signifi cant content of bioactive compounds.