摘要
以玉米粉为碳源,添加一定量的豆粕粉和玉米浆干粉进行鼠李糖乳杆菌L-乳酸发酵,利用均匀设计法对培养基进行优化。结果表明当玉米粉、豆粕粉、玉米浆干粉的浓度分别为150 g/L、19.4 g/L、50 g/L时,发酵所得L-乳酸的浓度达到最大值142.1 g/L,乳酸转化率为92.5%。
L-lactic acid fermentation by Lactobacillus casei subsp.rhamnosus was studied with the corn powder as carbon source.Some soybean meal powder and corn steep powder was added to improve the production of L-lactic acid.According to the uniform design,the optimum dosages of corn powder,soybean meal powder and corn steep powder in culture media were 150 g/L,19.4 g/L and 50 g/L,respectively,under which the maximum concentration and yield of L-lactic acid were 142.1 g/L and 92.5%,respectively.
出处
《现代食品科技》
EI
CAS
2011年第9期1127-1129,共3页
Modern Food Science and Technology
关键词
鼠李糖乳杆菌
培养基优化
均匀设计
Lactobacillus casei
culture media optimization
uniform design
作者简介
李明阳，男，硕士，研究方向：食品安全与食品微生物
