Bakery enzymes in cereal technologies

Mikuš, Ľubomír; Dodok, L.; Kováčová, Mária; Staruch, Ladislav; Koman, V.

doi:10.5219/193

Cited by 1 publication

(1 citation statement)

References 18 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…[1][2][3] Hydrolysis of xylan to xylose and xylooligosaccharides can make juice and wine clearer, reduce dough adhesiveness, and increase dough consistency. 4,5 Filamentous fungi can produce more xylanases than yeast, Actinomycetes, and bacteria. 2 Filamentous fungi are also more suitable to be used in solid-state fermentation, which can increase the production of enzymes.…”

Section: Introductionmentioning

confidence: 99%

Effect of Glucose on Endo-xylanase and β-xylosidase Production by Fungi Isolated in Indonesia

Krisnawati¹,

Sardjono²,

Widada³

et al. 2022

J. Pure Appl. Microbiol.

View full text Add to dashboard Cite

Xylanases are widely produced by fungi, and the production of polysaccharide-degrading enzymes, in general, are usually subjected to carbon catabolite repression. In this work, the ability of several Indonesian indigenous fungi to produce endo-xylanase and β-xylosidase and their responses to glucose as a repressor were determined. Ten fungi were grown in a liquid medium supplemented with glucose as the repressor (0, 1%, 3%, and 5%), and the endo-xylanase and β-xylosidase productions were assayed. Aspergillus aculeatus FIG1 and A. oryzae KKB4 produced 3.85 and 0.70 U/mL of endo-xylanase, respectively, compared with other strains (0.22 U/mL or less). Trichoderma asperellum PK1J2, T. virens MLT2J2, A. aculeatus FIG1, T. asperellum MLT5J1, A. oryzae KKB4, and T. asperellum MLT3J2 produced 0.021–0.065 U/mL of β-xylosidase, whereas the other strains produced 0.013 U/mL or less of β-xylosidase. Adding 1% glucose to the growth medium can partially repress endo-xylanase production in A. aculeatus FIG1, T. asperellum PK1J2, and T. virens MLT4J1 and completely repress other strains. By adding 1% glucose, strains FIG1, PK1J2, and MLT4J1 suffered almost complete repression of β-xylosidase production, although such strains exhibited partial repression of endo-xylanase production. β-Xylosidase produced by the other strains showed complete repression by adding 1% glucose, except for A. aculeatus FIG1, A. tamarii FNCC 6151, and T. asperellum MLT1J1, which showed partial repression. Therefore, adding 3% glucose to the growth medium can result in complete repression of endo-xylanase and β-xylosidase productions in all strains examined.

show abstract

Section: Introductionmentioning

confidence: 99%