一种酸性成分。
前言：目的考察不同时期金银花中酸性成分的含量变化。
OBJECTIVE: To study the content changes of the acid ingredients in Flos Ionicerae at different time.
玉米糖浆中添加了香料、色素和酸性成分，还可使用防腐剂来增强稳定性。
The corn sugar (or sugar syrup) is supplemented with flavoring, coloring, and acidic ingredients and may be stabilized with a preservative.
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