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1. (Article ID: 9121)
 
Barros RGC, Pereira UC, Andrade JKS, Barbosa PF, Vasconcelos SV, Nogueira JP, Rajan M, Narain N
Intracellular and extracellular enzyme patterns during biosynthesis of short chain fructooligosaccharides from Aspergillus spp. strains: Profile, biological structure correlation and chemometric characterizations
Bioresource Technology Reports 11 (2020) ID 100546
 

Eight strains of Aspergillus spp. were evaluated for their ability to produce intracellular and extracellular fructosyltransferase and fructooligosaccharides from sucrose. To the best of our knowledge, this is the first time that a study evaluates the production of intracellular and extracellular fructosyltransferase simultaneously with its chemometric characterization. High values of intracellular FTase were exhibited by A. oryzae and A. carbonarius and extracellular FTase by A. japonicus and A. ochraceus. The highest concentrations of intracellular FOS were generated by A. carbonarius and A. ochraceus and extracellular FOS by A. carbonarius and A. japonicus. The variations detected between the behavior of intra- and extra-cellular enzymes can be explained by activation of disulfide bridges and N-terminal signal peptides that occur distinctly between these biological structures. 1-kestose and 1-fructofuranosylnystose were the major oligosaccharides detected by HPLC-RID. Thus, transfructosylation activity is the main contributor to the positive correlation of 1-kestose.

fructooligosaccharides, fructosyltransferase, intracellular enzymes, chemometric characterization, extracellular enzymes

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