摘要
研究了提高供氧能力对土曲霉ＩＦＯ－６３６５分批发酵生产衣康醚产酸能力的影响。当通风比为０．５，搅拌叶轮末端线速度为１２５．７ｃｍ／ｓ时的最大衣康酸发酵产率分别比叶轮末端线速度为９４．２ｃｍ／ｓ和７８．５ｃｍ／ｓ高出１．２８倍和３倍，当添加氧载体──正十二烷，叶轮末端线速度为７８．５ｃｍ／ｓ时，与对照相比，可提高产酸１４％，但在高叶轮末端线速度条件下，加入正十二烷，只能促进菌体的生长，对发酵产酸呈抑制作用。
Effect of aeration rate and impeller tip speed on itaconic acid production was investigated in a batch culture of Aspergillus terreus IfO-6365. When impeller tip speed was 125.7cm/s at a fixed aeration rate of 0. 5 vvm, productivity of itacomic acid was 1. 28 and 3.0 times higher than those in the impeller tip speed of 94. 2 and 78. 5 cm/s, respectively. When impeller tip speed was 78. 5 cm/s, itaconic acid concentr concentration was increased 14% than the contral, by addition of the Oxygen-vectors-n-dodecane 5%. In hight impeller tip speed though n-dodecane can promote A. terreus growth, but it inhibit itaconic acid produce.
出处
《天津轻工业学院学报》
1996年第1期6-10,共5页
Journal of Tianjin University of Light Industry
关键词
衣康酸
土曲霉
发酵
氧载体
正十二烷
Itaconic acid
Fermentation
Oxygen-vectors
Aspergillus terreus
n-dodecane
