Production and activities of chitinases and hydrophobins from Lecanicillium lecanii |
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Authors: | Zaizy Rocha-Pino Gabriel Vigueras Keiko Shirai |
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Institution: | (1) Laboratory of Biopolymers, Biotechnology Department, Universidad Aut?noma Metropolitana, Av. San Rafael Atlixco, No. 186, 09340 Mexico City, Mexico;(2) Process and Technology Department, Universidad Aut?noma Metropolitana-Cuajimalpa, Mexico, D.F., Mexico; |
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Abstract: | The production of chitinases and hydrophobins from Lecanicillium lecanii was influenced by the cultivation method and type of carbon source. Crude enzyme obtained from solid-substrate culture presented
activities of exochitinases (32 and 51 kDa), endochitinases (26 kDa), β-N-acetylhexosaminidases (61, 80, 96 and 111 kDa). Additionally, submerged cultures produced exochitinases (32 and 45 kDa),
endochitinases (10 and 26 kDa) and β-N-acetylhexosaminidases (61, 96 and 111 kDa). β-N-acetylhexosaminidases activity determined in solid-substrate culture with added chitin was ca. threefold (7.58 ± 0.57 U mg−1) higher than submerged culture (2.73 + 0.57 U mg−1). Similarly, hydrophobins displayed higher activities in solid-substrate culture (627.3 ± 2 μg protein mL−1) than the submerged one (57.4 ± 4.7 μg protein mL−1). Molecular weight of hydrophobins produced in solid-substrate culture was 7.6 kDa and they displayed surface activity on
Teflon. |
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