Xylanolytic activity of some species of River Nile aquatic Hyphomycetes

• Autorzy: Abdel-Raheem A M , Badran R.
• Języki publikacji: EN

Abstrakty

EN

The strongest xylanolytic ability of 16 investigated species was found in Flagellospora penicillioides Ingold, Triscelophorus monosporus Ingold, Anguillospora longissima (De Wild) Ingold, and Lunulospora curvula Ingold. Xylan was the best carbon source for xylanase production and activity in F. penicillioides and T. monosporus. The peak values of xylanase production and activity recorded ranged from 20-25 °C and 5-6 pH. K2HPO4 was the best phosphorus source for xylanase activity. The xylanase activity disappeared when only NaNO3 was used as the nitrogen source. Xylan is an important source of carbon for species of aquatic Hyphomycetes but xylanolytic ability was different between the species.

PL

Wśród 16 gatunków największą zdolność rozkładu ksylanu stwierdzono u Flagellospora penicillioides Ingold, Triscelophorus monosporus Ingold, Anguillospora longissima (De Wild) Ingold i Lunulospora curvula Ingold. Dla F. penicillioides i T. monosporus ksylan okazał się najlepszym źródłem węgla do produkcji ksylanazy, i przy jego dostępności aktywność ksylanazy była największa. Maksymalna produkcja i aktywność enzymu wystąpiła przy 20-25 °C i pH 5-6. Najlepszym źródłem fosforu był K2HPO4. Aktywność ksylanazy zanikała w obecności NaNO3 jako źródła azotu. Ksylan jest ważnym źródłem węgla dla wodnych Hyphomycetes, ale poszczególne gatunki różnią się stopniem zdolności jego rozkładu.

Słowa kluczowe

EN

River Nile; xylanolytic activity; xylan; Triscelophorus monosporus; xylanase; Lunulospora curvula; Flagellospora penicillioides; xylanase activity; hydrobiology; Anguillospora longissima; Hyphomycetes; xylanolytic ability

• Wydawca: -
• Czasopismo: Acta Hydrobiologica
• Rocznik: 1997
• Tom: 39
• Numer: 1-2
• Opis fizyczny: p.1-8,fig.,ref.

Twórcy

autor

Abdel-Raheem A M

• South Valley University, Sohag, Egypt

autor

Badran R.

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