本研究中以不同去乙醯度及分子量之幾丁聚醣(chitosan)吸附二種卡馬西藍染料，以減少溶液中卡馬西藍染料之含量。結果顯示幾丁聚醣可以有效吸附溶液中卡馬西藍染料。以卡馬西藍R-250溶液而言，吸附效果最佳之幾丁聚醣為分子量11萬，去乙醯度90%，將0.006g幾丁聚醣置入10ml溶液中，在30分鐘內約可吸附83%之色度。以卡馬西藍G-250溶液而言，吸附效果最佳之幾丁聚醣為分子量55萬，去乙醯度90%，將0.006g幾丁聚醣置入10ml溶液中，在15分鐘內約可吸附80%之色度。本研究之結論顯示幾丁聚醣可以有效吸附溶液中的卡馬西藍染料。

　　The purpose of this study is to use chitosan to adsorb coomassie blue aqueous solutions. Our data showed that chitosan adsorb coomassie blue in a dose response manner. When chitosan with degree of deacteylation (DD) value of 90% and molecular weight of 110,000 at concentration of 6 mg/10ml can adsorb 83% of coomassie blue R-250 from the solution in 30 min. When chitosan with DD value of 90% and Mw of 550,000 at concentration of 6 mg/10ml can adsorb 80% of coomassie blue G-250 from the solution in 15min. This report demonstrates that chitosan can be used to effectively adsorb coomassie blue from its aqueous solutions.

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