Comparison of Different HPLC Methods in Determination of Degrees of N-acetylation for Chitin and Chitosan
碩士 === 國立臺灣海洋大學 === 食品科學系 === 95 === Abstract Chitin is the mainly constitution of invertebrates and the cell wall of fungus. The different degree of N-acetylation(DA) can influence the properties of chitin and chitosan, so to determine DA is important. Using the improved HPLC A and B can determine...
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ndltd-TW-095NTOU52530792016-05-13T04:14:25Z http://ndltd.ncl.edu.tw/handle/71021928252651093516 Comparison of Different HPLC Methods in Determination of Degrees of N-acetylation for Chitin and Chitosan 不同高效能液相層析法測定幾丁質/幾丁聚醣N-乙醯化程度之比較 Sian-Jyun Jhuo 卓憲駿 碩士 國立臺灣海洋大學 食品科學系 95 Abstract Chitin is the mainly constitution of invertebrates and the cell wall of fungus. The different degree of N-acetylation(DA) can influence the properties of chitin and chitosan, so to determine DA is important. Using the improved HPLC A and B can determine chitin and chitosan with DA range from 25 to 85%. Improved conditions of acid hydrolysis which increase the content of sulfuric acid from 0.5 mL to 1.5 mL, decrease the temperature from 155℃ to 110℃ and time of acid hydrolysis from 1 hrs to 30-40 mins, it can reduce sugar caramelization and the time of samples preparation. The improved HPLC A and B is more accurate and more precise than other ways, such as IR spectroscopy、UV spectroscopy etc ; therefore using IR spectroscopy determine the DA of samples, we can use the improved HPLC A to take place of NMR spectroscopy to build the calibration curves which become a standard of IR spectroscopy. Lang-Bang Hung 洪良邦 2007 學位論文 ; thesis 102 zh-TW |
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碩士 === 國立臺灣海洋大學 === 食品科學系 === 95 === Abstract
Chitin is the mainly constitution of invertebrates and the cell wall of fungus. The different degree of N-acetylation(DA) can influence the properties of chitin and chitosan, so to determine DA is important.
Using the improved HPLC A and B can determine chitin and chitosan with DA range from 25 to 85%. Improved conditions of acid hydrolysis which increase the content of sulfuric acid from 0.5 mL to 1.5 mL, decrease the temperature from 155℃ to 110℃ and time of acid hydrolysis from 1 hrs to 30-40 mins, it can reduce sugar caramelization and the time of samples preparation.
The improved HPLC A and B is more accurate and more precise than other ways, such as IR spectroscopy、UV spectroscopy etc ; therefore using IR spectroscopy determine the DA of samples, we can use the improved HPLC A to take place of NMR spectroscopy to build the calibration curves which become a standard of IR spectroscopy.
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author2 |
Lang-Bang Hung |
author_facet |
Lang-Bang Hung Sian-Jyun Jhuo 卓憲駿 |
author |
Sian-Jyun Jhuo 卓憲駿 |
spellingShingle |
Sian-Jyun Jhuo 卓憲駿 Comparison of Different HPLC Methods in Determination of Degrees of N-acetylation for Chitin and Chitosan |
author_sort |
Sian-Jyun Jhuo |
title |
Comparison of Different HPLC Methods in Determination of Degrees of N-acetylation for Chitin and Chitosan |
title_short |
Comparison of Different HPLC Methods in Determination of Degrees of N-acetylation for Chitin and Chitosan |
title_full |
Comparison of Different HPLC Methods in Determination of Degrees of N-acetylation for Chitin and Chitosan |
title_fullStr |
Comparison of Different HPLC Methods in Determination of Degrees of N-acetylation for Chitin and Chitosan |
title_full_unstemmed |
Comparison of Different HPLC Methods in Determination of Degrees of N-acetylation for Chitin and Chitosan |
title_sort |
comparison of different hplc methods in determination of degrees of n-acetylation for chitin and chitosan |
publishDate |
2007 |
url |
http://ndltd.ncl.edu.tw/handle/71021928252651093516 |
work_keys_str_mv |
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