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題 名 | Preparation of Fungal Chitin and Chitosan from Shiitake Stipes=從香菇腳製備之真菌幾丁質和幾丁聚醣 |
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作 者 | 顏名聰; 毛正倫; | 書刊名 | 中華真菌學會會刊 |
卷 期 | 21:1/2 民95.12 |
頁 次 | 頁1-11 |
分類號 | 346.217 |
關鍵詞 | 去乙醯化; 香菇; 香菇腳; 真菌幾丁質; 幾丁聚醣; Chitosan; Deacetylation; Fungal chitin; Lentinula edodes; Shiitake stipes; |
語 文 | 英文(English) |
中文摘要 | 粗真菌幾丁質以香菇腳為原料,使用鹼處理,接著由三種不同的脫色方法製備。粗香菇幾丁質之產量為25.08-36.72%,及個別產量依降序為幾丁質B>A>C。幾丁質C之粗纖維含量較菇腳、幾丁質A和B所含的更高。由高錳酸鉀脫色法製備之幾丁質C展現最佳的色澤。使用幾丁質C為原料,可得到較高產量之幾丁聚醣C。在幾丁質對氫氧化鈉之較高比值(1:9、1:12和1:15)下,以菇腳原料重作基準,在幾丁聚醣產量上並無差異。基於幾丁聚醣產量,較佳的條件為在1:9、1:12和1:15之比值下處理60分鐘,及幾丁聚醣B產量為14.14-19.14%,而幾丁聚醣C產量為19.54-23.69%。基於去乙醯度(DD),較佳的條件為在1:5和1:15之比值下處理120分鐘,及去乙醯度為95.39-98.21%。綜此,真菌幾丁質去乙醯化處理之建議條件為在1:12之比值下處理60分鐘。 |
英文摘要 | Crude fungal chitin was prepared from shiitake stipes as the raw material using alkaline treatment followed by three various decolorization methods. Yields of crude shiitake chitins were 25.08–36.72% and in the descending order of chitins B>A>C. The crude fiber content of chitin C was higher than those of stipes and chitins A and B. Chitin C obtained by decolorization with potassium permanganate showed the best color. Using chitin C as raw material, chitosan C was obtained with higher yields. At higher ratios of chitin to sodium hydroxide of 1:9, 1:12, and 1:15, no difference in the yields was found on the basis of raw material. For the yields, better conditions were at ratios of 1:9, 1:12, and 1:15 for 60 min, and the yields were 14.14-19.14% for chitosan B and 19.54-23.69% for chitosan C. For degrees of N-deacetylation (DD), better conditions were at ratios of 1:5 and 1:15 for 120 min and the DD was 95.39-98.21%. The proposed conditions for N-deacetylation of fungal chitin would be at a ratio of 1:12 for 60min. |
本系統中英文摘要資訊取自各篇刊載內容。