Maltotetraose Production Using Pseudomonas stutzeri Exo‐α‐Amylase in a Membrane Recycle Bioreactor

Gun-Jo Woo, J. D. McCORD

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

For a continuous process using maltotetraose (G4)‐forming amylase in a membrane recycle bioreactor (MRB), the enzyme was partially purified to specific activity 21.5 IU/mg protein. The enzyme was stable enough to convert starch into G4 in batch and MRB systems. Optimum conditions in the MRB using hollow fiber with 1,000 molecular weight cut‐off were: substrate concentration 1.0% (w/v), enzyme concentration 70 IU/L reactant, and residence time 83 min. Productivity at steady state under optimized conditions was 0.99 g/L/hr. Excessive residence time decreased product purity by further conversion of G4 to lower molecular weight compounds due to endo‐acting activity of the enzyme.

Original languageEnglish
Pages (from-to)1019-1023
Number of pages5
JournalJournal of Food Science
Volume56
Issue number4
DOIs
Publication statusPublished - 1991
Externally publishedYes

Fingerprint

Pseudomonas stutzeri
Bioreactors
bioreactors
glucan 1,4-maltotetraohydrolase
Membranes
Enzymes
enzymes
molecular weight
Molecular Weight
amylases
purity
Starch
starch
enzyme activity
maltotetraose
proteins
Proteins

ASJC Scopus subject areas

  • Food Science

Cite this

Maltotetraose Production Using Pseudomonas stutzeri Exo‐α‐Amylase in a Membrane Recycle Bioreactor. / Woo, Gun-Jo; McCORD, J. D.

In: Journal of Food Science, Vol. 56, No. 4, 1991, p. 1019-1023.

Research output: Contribution to journalArticle

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