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Fig. 2 | Bioresources and Bioprocessing

Fig. 2

From: Preparation of β(1→3)/β(1→4) xylooligosaccharides from red alga dulse by two xylanases from Streptomyces thermogriseus

Fig. 2

Optimum temperature and pH and thermostability of StXyl10 and StXyl11. a Optimum temperatures of StXyl10 and StXyl11. The activities were measured at pH 6.5 and at 30–80 °C in a reaction mixture containing 10 mg/mL GX. White filled circle StXyl10; Black filled circle StXyl11. b Optimum pH of StXyl10 and StXyl11. The activities were measured at 65 °C in the reaction mixtures adjusted to pH 4.0–10.0. White filled circle StXyl10; Black filled circle StXyl11. c Thermal stabilities of StXyl10 and StXyl11. The remaining activities were assessed after incubation of each enzyme at 50–70 °C for up to 24 h in 10 mM sodium phosphate buffer (pH 6.5). Average values for triplicate measurements are shown with standard deviations, and error bars are within the symbols. The standard deviation within the symbols was less than 5% in all cases. White filled circle StXyl10 at 50 °C; White filled triangle StXyl10 at 60 °C; White filled square StXyl10 at 70 °C; Black filled circle StXyl11 at 50 °C; Black filled traingle StXyl11 at 60 °C. The specific activities of StXyl10 and StXyl11 for GX were 252 U/mg at 70 °C and pH 6.5 and 1392 U/mg at 60 °C and pH 6.5, respectively

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