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改进提取工艺，确保有效成分含量，采用萃取-反应-分光光度法对通便灵胶囊之主药番泻叶的有效成分番泻甙进行含量测定，提高其质量控制指标。
Improve the extraction process to ensure the content of active ingredients, use extraction-reaction-spectrophotometry to determine the effective component of sennae, the main component of Tongya Ling capsule’s senna, and improve its quality control index.