从乌贼内壳提取β-壳聚糖

生物工程论文编号:SW003  论文字数:8198,页数:19

目  录
中文摘要 I
英文摘要 II
目录 III
1. 绪论 1-4
2. 实验部分 4
 2.1材料、仪器与设备 4
 2.2壳聚糖的制备 5
 2.3性能检测 5
 2.4甲壳素的脱乙酰化反应：酸碱滴定法 5
 2.5红外图谱制样方法 7
3. 结果与讨论 7
 3.1酸浸条件对产品的影响 7
 3.2碱煮条件的影响 8
 3.3脱乙酰条件的确定 9
 3.4产品的结构表征 10-11
总结 12
展望 12
 5.1改性壳聚糖的研究力度不够  12
 5.2市场现状及前景展望 12-13
致谢 14
参考文献 15-16

摘 要：本论文研究了从乌贼软骨中提取β-壳聚糖，实验先将乌贼软骨磨成粉末，然后在不同的条件下提取甲壳素，甲壳素再经过脱乙酰化反应得到壳聚糖，考察了碱煮时间、碱液质量分数、碱煮温度等因数对脱乙酰度的影响。结果表明脱乙酰度的影响因素的主次顺序为温度>时间>碱液质量分数,最佳操作方案为碱液质量分数为55%,时间3h,温度140℃，并将不同的条件进行比较。产品用IR表征，并与α-结构的壳聚糖进行比较。

关键词：乌贼软骨；甲壳素；壳聚糖；脱乙酰度

Abstract:This Papers researched extraction β-Chitosan from squid cartilage,the experimental grinded squid cartilage to powder,then extraction Chitin at different conditions,Chitin was obtianed after deacetylation.Reviewen alkali cooking time,lye quality score and alkali cooking temperature Which  were the factors of degree of deacetylation were reviewed .The results showed that the  primary and secondary order of the impact factors was temperature＞time＞lye quality score.The best operation programmes were 55% of lye quality score,3 hours,140 ℃.And then different conditions were compared.The product was characterized by IR,and compared with the α-Chitosan.

Keywords：Squid cartilage; chitin, chitosan; degree of deacetylation