Effects of initial maltose concentration, agitation and aeration rates on the production of glucosyltransferase byAspergillus nigerCCRC 31494

✍ Scribed by Wen-Chang Chen; Shiow-Ling Lee; Pi-Yun Tung

• Publisher: Springer Netherlands
• Year: 1996
• Tongue: English
• Weight: 418 KB
• Volume: 18
• Category: Article
• ISSN: 0141-5492
• DOI: 10.1007/bf00140189

✦ Synopsis

The microorganism Aspergihs niger CCRC 3 1494 can produce an extracellular glucosyltransferase (GTase, EC 2.4.1.24) with a high transglucosylating activity. The maximal enzyme production occurred at initial maltose concentration of 40 g 1-l. The microorganism was also grown in a 5-liter jar fermenter for GTase production. It was found that the optimal agitation and aeration rates were 750 rev min-' and 1 .O 1 min.', respectively, and the enzyme production was about 0.25-0.26 units ml'.