期刊名称：Annals of the University Dunarea de Jos of Galati. Fascicle VI : Food Technology
印刷版ISSN：1843-5157
电子版ISSN：2068-259X
出版年度：2012
卷号：36
期号：2
页码：49-57
出版社：Galati University Press
摘要：The production of xylanase without cellulase is required for the prebleaching of pulps,paper and food industry. The strain Streptomycesspp.P12-137 developed from the spores of the wild type organism was used in this work. Cultures in Erlenmeyer flasks, under shaking condition (150 rpm) at temperature and pH values (28¡ãC, 5.0 respectively) revealed a xylanase activity of 27.77 IU¡¤mL-1after 120 h fermentation. This study demonstrates that Streptomycesspp. P12-137 is able to produce xylanase when wheat bran is used as a substrate. Fermentation was performed in a glass bioreactor with forced aeration. Data obtained have been compared todata from mathematical model obtainedby numerical simulation usingMatlab 7.9.0.529 (MathWorks, Inc. USA). The numerical simulation of the bioprocess could be a useful tool for adopting a control strategy to achieve increased xylanases yields under pilot or industrial conditions
