Purification and Characterization of a Chitosanase and a Protease by Conversion of Shrimp Shell Wastes Fermented by Serratia Marcescens Subsp. Sakuensis TKU019
學年 99
學期 1
出版（發表）日期 2010-08-01
作品名稱 Purification and Characterization of a Chitosanase and a Protease by Conversion of Shrimp Shell Wastes Fermented by Serratia Marcescens Subsp. Sakuensis TKU019
作品名稱（其他語言）
著者 Liang, Tzu-Wen; Kuo, Yi-Hsuan; Wu, Pei-Chen; Wang, Chuan-Lu; Dzung, Nguyen Anh; Wang, San-Lang
單位 淡江大學化學學系
出版者 臺北市：中國化學會
著錄名稱、卷期、頁數 Journal of the Chinese Chemical Society=中國化學會會誌 57(4)pt.B, pp.857-863
摘要 A chitosanase and a protease were purified from the culture supernatant of Serratia marcescens subsp. sakuensis TKU019 with shrimp shell as the sole carbon/nitrogen source. The culture condition suitable for production of chitosanase was found to be shaken at 37˚C for 3 days in 100 mL of medium containing 0.5% shrimp shell powder, 0.1% K2HPO4 and 0.05% MgSO4‧7H2O at pH 7. The TKU019 chitosanase was suppressed by the simultaneously existing protease, which also showed the maximum activity at the third day of incubation. The molecular masses of the chitosanase and protease determined by SDS-PAGE were approximately 36 kDa and 58 kDa, respectively. Cu2+, Mn2+ and Zn2+ inhibited the chitosanase activity, and all of tested divalent metals inhibited in the protease activity. The optimum pH, optimum temperature, pH stability, and thermal stability of the chitosanase was pH 7, 60˚C, pH 4–7, and < 60˚C, respectively. The optimum pH, optimum temperature, pH stability, and thermal stability of the protease was pH 10, 50˚C, pH 5-10, and < 50˚C, respectively. Tween 40 (2%, v/v) had stimulatory effect on TKU019 protease activity.
關鍵字
語言 en
ISSN 0009-4536; 2192-6549
期刊性質 國內
收錄於 SCI
產學合作
通訊作者 Wang, San-Lang
審稿制度 否
國別 TWN
公開徵稿
出版型式 ,紙本
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