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Title: Microparticle-enhanced polygalacturonase production by wild type Aspergillus sojae
Authors: Karahalil, Ercan
Demirel, Fadime
Evcan, Ezgi
Germeç, Mustafa
Tarı, Canan
Turhan, İrfan
Keywords: Aluminum oxide
Aspergillus sojae
Morphology engineering
Shake flask fermentation
Publisher: Springer Verlag
Source: Karahalil, E., Demirel, F., Evcan, E., Germeç, M., Tarı, C., and Turhan, İ. (2017). Microparticle-enhanced polygalacturonase production by wild type Aspergillus sojae. 3 Biotech, 7(6). doi:10.1007/s13205-017-1004-2
Abstract: Polygalacturonases (PGs), an important industrial enzyme group classified under depolymerases, catalyze the hydrolytic cleavage of the polygalacturonic acid chain through the introduction of water across the oxygen bridge. In order to produce and increase the concentration of this enzyme group in fermentation processes, a new approach called microparticle cultivation, a promising and remarkable method, has been used. The aim of this study was to increase the PG activity of Aspergillus sojae using aluminum oxide (Al2O3) as microparticles in shake flask fermentation medium. Results indicated that the highest PG activity of 34.55 ± 0.5 U/ml was achieved with the addition of 20 g/L of Al2O3 while the lowest activity of 15.20 ± 0.2 U/mL was obtained in the presence of 0.1 g/L of Al2O3. In fermentation without microparticles as control, the activity was 15.64 ± 3.3 U/mL. Results showed that the maximum PG activity was 2.2-fold higher than control. Additionally, smaller pellets formed with the addition of Al2O3 where the lowest pellet diameter was 955.1 µm when 10 g/L of the microparticle was used. Also, it was noticed that biomass concentration gradually increased with increasing microparticle concentration in the fermentation media. Consequently, the PG activity was significantly increased in microparticle-enhanced shake flask fermentation. In fact, these promising preliminary data can be of significance to improve the enzyme activity in large-scale bioreactors.
ISSN: 2190-5738
Appears in Collections:Food Engineering / Gıda Mühendisliği
PubMed İndeksli Yayınlar Koleksiyonu / PubMed Indexed Publications Collection
Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection
WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection

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