A regular McDonald's sesame-seed bun contains calcium propionate and sodium propionate—both preservatives.

普通的麦当劳芝麻小圆面包含有丙酸钙和丙酸钠，这两样都是防腐剂。

Ca-propionate was used as antiseptic agent to restrain growth of bacteria and mold.

并通过添加丙酸钙作为防腐剂有效抑制了细菌和霉菌的生长。

Eack of methanogensis and sulfate reduction used about 50% of electron from propionate.

产甲烷和硫酸盐还原各利用基质50％左右的电子流。

Results: Salmeterol and fluticasone propionate powder marked improvement in asthma symptoms.

结果：沙美特罗替卡松粉剂明显改善哮喘病状。

HPLC method for determination of clobetasol propionate in compound Buguzhi liniment was established.

建立了HPLC法测定复方补骨脂搽剂中丙酸氯倍他索的含量。