頁籤選單縮合
題 名 | 硫酸鹽紙漿之木醣酶前處理及鹼萃後釋放發色團基之特性=Characterization of Soluable Chromophores Released from Kraft Pulps by Xylanase Pretreatment and Alkali Extraction |
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作 者 | 施照輝; 汪淮; | 書刊名 | 林產工業 |
卷 期 | 21:4 2002.12[民91.12] |
頁 次 | 頁297-303 |
分類號 | 476.21 |
關鍵詞 | 硫酸鹽紙漿; 木醣酶; 發色團基; 紙漿漂白; Kraft pulp; Xylanase; Chromophoric group; Pulp bleaching; |
語 文 | 中文(Chinese) |
中文摘要 | 不同活性鹼(16%、18%、24%)處理的台灣二葉松硫酸鹽紙漿經2, 4, 10 IU/g木醣酶處理後,於波長400-600nm之可見光吸收區均無明顯的特性吸收峰,與對照組相較,於波長237nm、280nm處出現明顯的特性吸收,顯示木醣酶確有釋放發色團基之作用。木醣酶處理段與鹼萃段所釋出發色團之紫外-可見光吸收圖譜有所不同,鹼萃段溶出物質在205nm處之吸收較237nm明顯,顯示木醣酶釋出發色團基,故有利鹼萃時移除殘餘木質素。 |
英文摘要 | After the extraction (alkali charge 16%, 18% and 24%) of Pinus taiwanensis kraft pulps pretreated with xylanase, no absorbance spectrum in the visible light range 400-600nm was observable. Comparing with the controls, xylanase-released materials absorbed more strongly at 237nm and 280nm. The results indicated that xylanase could release chromophores. The UV/VIS spectra of released materials were different between xylanase pretreatment and alkali-extraction. Alkali-extraction released materials which absorbed at 205nm more strongly than at 237nm. The results indicated that xylanase treatment improved the removal of residual lignin and the release of chromophores. |
本系統中英文摘要資訊取自各篇刊載內容。