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Studies on the alkalophilicStreptomyces with extracellular xylanolytic activity

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Summary

An alkalophilicStreptomyces which produced xylanase, isolated from soil, grew in a temperature range of 15–37°C. The pH optimum for growth was 10 and no growth occurred at pH 7. On a simple wheat bran medium the microorganism exhibited maximum enzyme secretion of 12 U/ml at pH 10. The enzyme had a broad pH optimum of 4.8–10 and the optimum temperature of 50°C. It was completely inactivated at 60°C in 2 h. The enzyme hydrolyzed xylan to a mixture of oligomeric products indicating that the main activity was of the endoxylanase type. The culture filtrate had no cellulase activity.

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Vyas, P., Chauthaiwale, V., Phadatare, S. et al. Studies on the alkalophilicStreptomyces with extracellular xylanolytic activity. Biotechnol Lett 12, 225–228 (1990). https://doi.org/10.1007/BF01026804

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