Esmelindro Angela Aquino, Girardi Jonathan Dos Santos, Mossi Altemir, Jacques Rosângela Assis, Dariva Cláudio
Department of Food Engineering, URI-Campus de Erechim, Av. Sete de Setembro 1621, Erechim-RS, Brazil, 99700-000.
J Agric Food Chem. 2004 Apr 7;52(7):1990-5. doi: 10.1021/jf035143u.
The aim of this work is to assess the influence of light intensity (plants with direct sun exposure and in a controlled light intensity) and age of leaves (6-24 months) on the characteristics of the extracts of mate tea leaves obtained from carbon dioxide at high pressures. Samples of mate were collected in an experiment conducted under agronomic control at Industria e Comercio de Erva-Mate Barão LTDA, Brazil. The content of selected organic compounds of the extracts was evaluated by gas chromatography together with mass spectrometry. Quantitative analysis of caffeine, theobromine, phytol, vitamin E, squalene, and stigmasterol was performed, and the results showed that field variables exert a strong influence on the liquid yield and on the chemical distribution of the extracts.
这项工作的目的是评估光照强度（直接暴露在阳光下的植物和处于可控光照强度下的植物）以及叶片年龄（6 - 24个月）对从高压二氧化碳中获得的马黛茶叶提取物特性的影响。马黛茶样本是在巴西的Industria e Comercio de Erva-Mate Barão LTDA公司进行的一项农艺控制实验中采集的。提取物中选定有机化合物的含量通过气相色谱联用质谱法进行评估。对咖啡因·可可碱·叶绿醇·维生素E·角鲨烯和豆甾醇进行了定量分析，结果表明田间变量对提取物的液体产量和化学分布有很大影响。
