文章基本信息

标题：RELAÇÃO ENTRE COMPOSTOS FITOQUÍMICOS E O NITROGÊNIO EM MORFOTIPOS DE ERVA-MATE (Ilex paraguariensis St.Hil.)
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作者：ÂNGELA MARIA WOLSKI BORILLE ; CARLOS BRUNO REISSMANN ; RENATO JOÃO SOSSELA DE,FREITAS 等
期刊名称：Boletim Centro de Pesquisa e Processamento de Alimentos
印刷版ISSN：0102-0323
电子版ISSN：1983-9774
出版年度：2005
卷号：23
期号：01
出版社：Centro de Pesquisa e Processamento de Alimentos
摘要：The present work had as objective to determine the amounts of caffeine, theobromine, theophylline and tannins of three mate morphotypes based on sampling of young and mature leaves. Nitrogen in the leaves and in soil cores of the morphotypes was also determined to establish correlations among the analysed variables. Statistical evaluation was performed using ANOVA and simple correlation analysis. According to leaf color and morphological characteristics, the morphotypes were named as amarelinha (yellowish), cinza (gray) and sassafras and were collected in a commercial plantation at Ivai do Sul County, Paraná state, in July 2002. The analytical results showed high levels of caffeine, theobromine, tannins, total nitrogen in soil and total nitrogen in leaves in the three morphotypes. The high level of nitrogen in the leaves is related to its high contents in the soil cores. The lack of significant differences among samples for nitrogen is a result of a homogeneous distribution of the organic matter in the study area. Another aspect detected was the statistical differences between young and mature leaves for theobromine as for tannins, among morphotypes and between leaf ages. The cinza morphotype is the most appropriate for future standardization studies for mate products due to its higher number of significant correlations between the analysed variables.