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汉语拼音：kā fēi jiǎn

有机化合物，化学式c8h10o2n4·h2o，白色有光泽的柱状结晶体，有苦味。多含在咖啡、可可的种子和茶叶中。可做兴奋剂和利尿剂等。

• The amount of theobromine used in this study was equivalent to the amount contained in two cups of cocoa.

  本研究中所用的咖啡碱量与两杯可可所含咖啡碱量相当。

• Green tea caffeine taken in proper quantity stimulates every organ in the body and clears your mind.

  适量摄入绿茶咖啡碱能刺激体内所有器官并让你头脑清醒。

• When they were given theobromine capsules, the participants needed a third more capsaicin to induce cough than when they received a placebo.

  服用咖啡碱胶囊的受试者要比接受安慰剂的人员多三分之一的辣椒素来引起咳嗽。

• The results showed that the contents of polyphenols and chlorophyll gradually increase, but amino acids and caffeine reduce.

  结果表明，茶多酚、儿茶素和叶绿素的含量逐渐增多，而氨基酸和咖啡碱的含量逐渐减少。

• To research the ratio of tea caffeine, borneol and snake venom in optimized formula for treating drug addicts by well distributed design.

  采用均匀设计，研究茶叶咖啡碱与冰片、蛇毒的组方，寻找戒毒制剂的最佳配方。

• By clinical observation, drinking tea can increase blood pressure, which may contain caffeine in tea active substances.

  经临床观察，饮浓茶可使血压升高，这可能与茶叶中含有咖啡碱活性物质有关。

• The main substances which influence the taste of green tea are multi-phenol kinds, animo-acid, alkali of coffee, carbohydrate and pectin.

  影响绿茶滋味的主要物质有多酚类。氨基酸。咖啡碱。糖类和果胶等。

• The research provided the experimental basis of tea caffeine applied in drug withdrawal.

  为茶叶咖啡碱用于戒毒提供了实验依据。

• The results show that the electronic nose system can detect the caffeine content of Xinyangmaojian tea.

  研究结果表明，电子鼻技术可以用于信阳毛尖茶中咖啡碱含量的检测。