Glucoamylase and α-amylase production by immobilizedAspergillus niger

✍ Scribed by Gao-Xiang Li; Yu-Yen Linko; P. Linko

• Publisher: Springer Netherlands
• Year: 1984
• Tongue: English
• Weight: 405 KB
• Volume: 6
• Category: Article
• ISSN: 0141-5492
• DOI: 10.1007/bf00133830

✦ Synopsis

AspergiZius niger mycelia or spores were imnobilized in calcium alginate gel beads and employed for production of glucoamylase and a-amylase by repeated batch process. The immobilized mycelium produced lower enzyme activities than imnobilized spores germinated in a growth medium and subsequently cultured in an enzyme production medium. In repeated batch experiments, free cells could be used for only 4 4-day batches, whereas with immobilized spores at least 11 4-day batches with a gradual increase in enzyme activi ties in each successive batch were possible. The activity ratio of glucoamylase and a-amylase produced was altered by immobilization.