曲酸是微生物利用淀粉糖原料好氧发酵产生的一种弱酸性化合物。
Kojic acid is a kind of weak acid chemical compound that was produces by microorganism that make fine oxygen ferment with the starch candy raw materials.
恒顺香醋乙酸乙酯萃取物具有弱自由基清除活性，主要清除活性成分为酚性和酸性化合物。
An ethyl acetate extract of Hengshun aromatic vinegar (he) exerted a weak radical scavenging activity, and the main components were phenolic and acidic compounds.
而如今，根据加州大学河滨分校的研究人员称，他们已经成功制造出了能像碱性物质般作用的酸性化合物。
Until now, according to researchers at the University of California-Riverside, who have successfully made acidic compounds act like bases.
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