[beta]-Methyl-xyloside: positive effect on xylanase induction in Cellulomonas flavigena
Synthesis of extracellular xylanase in Cellulomonas flavigena is induced in the presence of xylan and sugarcane bagasse as substrates. The essential factors for efficient production of xylanase are the appropriate medium composition and an inducing substrate. The increase in xylanase production leve...
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| Veröffentlicht in: | Journal of industrial microbiology & biotechnology 2005-08, Vol.32 (8), p.345 |
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| creator | Hidalgo-lara, Marìa Eugenia Farrés, G S Amelia Montes-horcasitas, María Del Carmen |
| description | Synthesis of extracellular xylanase in Cellulomonas flavigena is induced in the presence of xylan and sugarcane bagasse as substrates. The essential factors for efficient production of xylanase are the appropriate medium composition and an inducing substrate. The increase in xylanase production levels in C. flavigena were tested with a number of carbon sources and different culture conditions. Xylose, arabinose, glycerol and glucose did not induce xylanase production in this microorganism. β-Methyl-xyloside (β-mx), a structural analog of xylobiose, also did not induce xylanase when used as the sole carbon source, but when xylan or sugar cane bagasse was supplemented with β-mx, extracellular xylanase production increased by 25 or 46%, respectively. The response of C. flavigena to xylan plus β-mx was accompanied by a significant accumulation of reducing sugar, an effect not observed with the combination sugarcane bagasse plus β-mx as substrate. To our knowledge, this is the first report on the effect of β-mx on the induction of xylanase in C. flavigena.[PUBLICATION ABSTRACT] |
| doi_str_mv | 10.1007/s10295-005-0258-6 |
| format | Article |
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The essential factors for efficient production of xylanase are the appropriate medium composition and an inducing substrate. The increase in xylanase production levels in C. flavigena were tested with a number of carbon sources and different culture conditions. Xylose, arabinose, glycerol and glucose did not induce xylanase production in this microorganism. β-Methyl-xyloside (β-mx), a structural analog of xylobiose, also did not induce xylanase when used as the sole carbon source, but when xylan or sugar cane bagasse was supplemented with β-mx, extracellular xylanase production increased by 25 or 46%, respectively. The response of C. flavigena to xylan plus β-mx was accompanied by a significant accumulation of reducing sugar, an effect not observed with the combination sugarcane bagasse plus β-mx as substrate. 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The essential factors for efficient production of xylanase are the appropriate medium composition and an inducing substrate. The increase in xylanase production levels in C. flavigena were tested with a number of carbon sources and different culture conditions. Xylose, arabinose, glycerol and glucose did not induce xylanase production in this microorganism. β-Methyl-xyloside (β-mx), a structural analog of xylobiose, also did not induce xylanase when used as the sole carbon source, but when xylan or sugar cane bagasse was supplemented with β-mx, extracellular xylanase production increased by 25 or 46%, respectively. The response of C. flavigena to xylan plus β-mx was accompanied by a significant accumulation of reducing sugar, an effect not observed with the combination sugarcane bagasse plus β-mx as substrate. 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| subjects | Bacteria Bagasse Carbon sources Microbiology Sugar Sugarcane |
| title | [beta]-Methyl-xyloside: positive effect on xylanase induction in Cellulomonas flavigena |
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