http://scholars.ntou.edu.tw/handle/123456789/10270
標題: | Effect of the Characters of Chitosans Used and Regeneration Conditions on the Yield and Physicochemical Characteristics of Regenerated Products | 作者: | Chu Hsi Hsu Szu Kai Chen Wei Yu Chen Min Lang Tsai Rong Huei Chen |
關鍵字: | chitosan;regeneration;molecular weight;polydispersity index;degree of deacetylation;crystallinity;ash content | 公開日期: | 四月-2015 | 出版社: | MDPI | 卷: | 16 | 期: | 4 | 起(迄)頁: | 8621-8634 | 來源出版物: | International Journal of Molecular Sciences | 摘要: | The objective of this study was to explore the effect of the character of chitosans used, and the regeneration conditions employed on, the yield and physicochemical characteristics of regenerated products. Different concentrations of acetic acid were used to dissolve chitosans of 61.7% and 94.9% degree of deacetylation (DD), and weight-average molecular weight (Mw) of 176 and 97 kDa, respectively; they were then precipitated with an 8 N NaOH solution, followed by washing and neutral and freeze drying to get the regenerated products. Yields of regenerated products and their physicochemical properties, such as ash content, bulk density, Mw, polydispersity index (PDI), DD, and crystallinity were measured. A higher concentration of acetic acid used resulted in a higher yield. The purity of the regenerated product increased significantly, whereas the bulk density and crystallinity decreased significantly after regeneration. The regeneration process showed its merits of narrowing down the PDI of regenerated products. The DD and structure of chitosan was changed insignificantly after the regeneration process. |
URI: | http://scholars.ntou.edu.tw/handle/123456789/10270 | ISSN: | 1422-0067 | DOI: | 10.3390/ijms16048621 |
顯示於: | 食品科學系 |
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