Batch CGTase Production with Free and Immobilized <i>Bacillus firmus</i>Strain 37 in Bovine Bone Charcoal
Batch CGTase Production with Free and Immobilized <i>Bacillus firmus</i>Strain 37 in Bovine Bone Charcoal作者机构：Chemical Engineering Department State University of Maringa Maringá Brazil Pharmaceutical Sciences Department State University of Maringa Maringá Brazil
出 版 物：《Advances in Chemical Engineering and Science》 (化学工程与科学期刊（英文）)
年 卷 期：2021年第11卷第1期
页 面：91-104页
学科分类：0202[经济学-应用经济学] 02[经济学] 020205[经济学-产业经济学]
主 题：Bacillus firmus CGTase Bone Charcoal Matrix Fluidized Bed Batch Reactor Cell Immobilization
摘 要：The present study aimed to study the batch production of CGTase (cyclomaltodextrin-glucanotransferase) with Bacillus firmus strain 37 free and immobilized in bovine bone charcoal in batch mode and in a fluidized bed batch reactor, respectively. The bovine bone charcoal is an innovative support material for the immobilization of microorganisms’ producers of enzymes and the use of this microbial support allows its reuse to a significant cost reduction of the process. The batch fermentation with free cells was investigated for 96 h and reached a CGTase activity equal to 0.77 U/mL. When the microorganism was immobilized on bovine bone charcoal (7 g) and cultivated in fluidized bed batch reactor with air supplementation (1 volume of air/volume of medium * minute), the same activity could be achieved in 24 h. The results of enzymatic activity achieved show the potential of CGTase production in a short time with Bacillus firmus strain 37 immobilized in bovine bone charcoal matrix and using air supplementation in the production medium.
维普期刊数据库