| Autor: |
Rogalski, J., Cho, N.-S., Zadora, J., Prendecka, M., Choma, A., Urbanik-Sypniewska, T., Leonowicz, A. |
| Předmět: |
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| Zdroj: |
Journal of Industrial Microbiology & Biotechnology; Mar2002, Vol. 28 Issue 3, p168, 5p |
| Abstrakt: |
Radiolabeled [[sup 14]C]arabinoxylan from wheat meal and [[sup 14]C]galactoglucomannan from red clover meal were prepared by using [sup 14]CO[sub 2] as a precursor. Twice as much mannan was mineralized than xylan after 14 days of incubation with Phlebia radiata. Low-molecular-weight phenolic compounds structurally related to lignin increased during mineralization of both hemicellulose fractions. Veratryl alcohol increased degradation of arabinoxylan by approximately 28.5%, whereas veratric acid increased it by only 9.0%. Vanillic acid and ferulic acid also stimulated degradation by 16.6% and 34.7%, respectively. Veratryl alcohol and ferulic acid increased degradation of galactoglucomannan by approximately 75%. Veratraldehyde in both cases repressed the degradation process (23.6% arabinoxylan, 43.8% galactoglucomannan). These results indicate that the degradation of hemicelluloses, e.g., xylan and mannan, by P. radiata is enhanced by addition of aromatic compounds. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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