Method: Single factor randomized block design was applied, plant samples were collected and investigated periodically, and dry weight, production and the main active ingredient content were measured.

方法：试验采用单因素随机区组设计，定株定期进行调查测定，收获后测各器官干重、产量和主要有效成分含量。

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Nattokinase, the main active ingredient of natto, is a potent fibrinolytic enzyme and has a potent protein structure made up of a single polypeptide chain consisting of 275 amine acids.

纳豆激酶，纳豆的主要活性成分，是一种强纤维蛋白溶解性酶，且含有一种由275种氨基酸组成的单个多肽链强蛋白结构。

youdao

As a patchwork solution, some drugmakers first seek approval of a new single-ingredient drug that contains a new active moiety in order to secure five years of exclusivity.

FORBES: Gilead Challenges FDA Over Exclusivity For Its Latest AIDS Drug