本研究探討氮源對於鏈球菌生長與玻尿酸生產之影響。在培養基中添加銨離子可提升比菌體生長速率，但將抑制菌體生產玻尿酸。在含有yeast extract的培養基額外添加tryptone與soytone，可提升菌體比生長速率與玻尿酸產量，所以玻尿酸醱酵之培養基應包含不同的有機氮源。

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凌沛學，透明質酸，中國輕工業出版社 (2000)。