胨是中国汉语里的词汇，指有机化合物，医学上用作细菌的培养基，又可治疗消化道的病。
它能水解淀粉，进行硝酸盐还原，能使牛奶胨化，产生硫化氢。
It has the abilities such as starch hydrolysis, nitrate reduction, milk peptonization and H2S production.
氮源中尿素最好，其次为蛋白胨和酵母膏；
The optimum nitrogen source is urea, next is peptone or yeast extract.
葡萄糖，蛋白胨是两菌株发酵产酶较好的碳、氮源。
The optimum carbon source was glucose and peptone as the optimum nitrogen source.
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