Mineral nutrition and caffeine content in coffee leaves

Bragantia

Paulo Mazzafera¹ 

[1] ,Universidade Estadual de Campinas Instituto de Biologia Departamento de Fisiologia VegetalCampinas SP

关键词: caffeine;    Coffea arabica L.;    mineral nutrition;    cafeína;    Coffea arabica L.;    nutrição mineral;   

DOI  :  10.1590/S0006-87051999000200018

来源: SciELO

【 摘 要 】

The effect of nutrient supply on the caffeine content of coffee (Coffea arabica L.) leaves was investigated. Seeds were germinated in nutrient-agar media lacking N, P, K, Ca, Mg, S, Zn, B or Mo. The control treatment contained all essential nutrients. The caffeine concentration was determined seven months after seed sowing when the seedlings have 3 to 4 pair of leaves. The omission of K induced the highest caffeine content in the leaves (24.5 g.kg-1). Caffeine in the control treatment was 21.9 g.kg -1. Absence of P induced the lowest content, 17.5 g.kg-1.

【 授权许可】

CC BY   
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