| 某些因子对四株维氏固氮菌菌株合成海藻酸的影响 |
| |
| 引用本文： | 陈声明,贾小明,王献凤,陈伟方,马小波,应勤良.某些因子对四株维氏固氮菌菌株合成海藻酸的影响[J].浙江大学学报(农业与生命科学版),1991(3). |
| |
| 作者姓名： | 陈声明 贾小明 王献凤 陈伟方 马小波 应勤良 |
| |
| 作者单位： | 浙江农业大学，浙江农业大学，浙江农业大学，浙江舟山市定海东方食品厂，浙江舟山市定海东方食品厂，浙江舟山市定海东方食品厂 杭州 310029，杭州 310029，杭州 310029，舟山 316042，舟山 316042，舟山 316042 |
| |
| 摘 要： | 本试验结果表明:相同条件下,四株维氏网氮菌(Azotobacter vinelandii)中,以菌株N_(13)的发酵周期短(1～2天),海藻酸合成最大(5.82 g/L),产海藻酸活力强(活力系数为2.60);不同条件下,菌株N_(13)在所试菌龄内,海藻酸合成最均高于其他菌株,其一天菌龄的浓度高达5.45±0.43 g/L,不同发酸液的海藻酸合成最仅在pH 8.0时低于菌株14~#,尤以pH6.0时,高达8.61g/L.在旋转式摇床或往复式摇床上,亦以菌株N_(13)的海藻酸合成量最高(3.61±0.26 g/L和4.39±0.12 g/L),试验温度范围内,也以菌株N_(13)的海藻酸合成量最高,32℃时达到最大值(6.41 g/L),菌株N_(13)以2～8％(V/V)的接种量试验表明:旋转式摇床为2％,往复式摇床为2～4％。
|
| 关 键 词： | 维氏固氮菌 细胞生长量 海藻酸合成量 产海藻酸活力 |
Effects of some conditions on alginic acid syntliesised by 4 strains of Azolobacter vinelandii |
| |
| Chen Shunning Jia Xiaoming Ying Qinliang et al..Effects of some conditions on alginic acid syntliesised by 4 strains of Azolobacter vinelandii[J].Journal of Zhejiang University(Agriculture & Life Sciences),1991(3). |
| |
| Authors: | Chen Shunning Jia Xiaoming Ying Qinliang |
| |
| Abstract: | Comparative experiment was conducted using 4 strains of A.vinelandii under the same conditions.It was shown that the fermentation time of strain N13 of A.vinelandii was the shortesl(1~2 days)among them.The bacterium had the highest alginic acid product(about 5.82g/l)and strongest alginic acid-produced activity(A/C =2.60).Comparative experiments among strains were conducted under different conditions.It was shown that strain Nl3 of A.vinelandii war,a highest productive alginic acid bacterium.Its alginic acid content was up to 5.45 /-0.43 g/L at the age of 1 day.The alginic acid content was especially about 8.61g/L at inital pH=6.0.Alginic acid producted by strain N13 was the highest both at the rotator and the reciprocal shaker(3.6l /-0.20 and 4.39 /-0.12g/L respectively).At 32 C,its product was the highest,about 6.41g/L.The test was conducted on inoculum volumes at 2~8%(v/v).It.was shown than 2% were adequate at rotator,but 2~4% were sufficient at reciprocal shaker. |
| |
| Keywords: | A vinelandii Cell product (C) Alginic acid-synthesized quantity (A) Alginic acid-produced acitivity(A/C) |
| 本文献已被 CNKI 等数据库收录！ |
|
