Thermostable amylases and pullulanases from two anaerobic microorganisms

US4929557A · kind A · utility

Assignee

• Kali-Chemie Aktiengesellschaft · DE

Inventors

• Garabed Antranikian · Seevetal, DE
• Gerhard Gottschalk · Meinerzhagen, DE

Key dates

• Filing date: Mar 31, 1988
• Grant date: May 29, 1990
• Expiry date: Mar 31, 2008

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S435/822
• WIPO field: Biotechnology
• WIPO sector: Chemistry

Abstract

At least one type of excretable, thermostable amylolytic enzyme, such as amylase and pullulanase, can be recovered from a culture medium in which thermophilic anaerobic bacteria, such as Thermoanaerobacter finii or Thermobacteroides acetoethylicus, are propagated anaerobically in continuous culture, in the presence of a higher saccharide as carbon source, such an enzyme having a high stability at temperatures between 60.degree. and 70.degree. C. in absence of metal ions and substrate and under aerobic conditions.