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作 者:钟超[1] 吴晖[1] 叶盛权[1,2] 赖富饶[1] 沈少飞[2]
机构地区:[1]华南理工大学轻工与食品学院,广东广州510640 [2]广东海洋大学食品科技学院,广东湛江524005
出 处:《现代食品科技》2010年第8期784-788,共5页Modern Food Science and Technology
基 金:新世纪优秀人才支持计划项目(NCET-060746)
摘 要:本文以壳聚糖(CTS)为原料,在超声作用环境中,将其与亚铁离子[Fe(Ⅱ)]在特定反应条件下配合,得到壳聚糖亚铁离子配合物[CTS-Fe(Ⅱ)]。然后在碱性环境下,以CTS-Fe(Ⅱ)为反应物,环氧丙烷为改性剂,10%四甲基氢氧化铵为催化剂合成得到了壳聚糖亚铁离子配合物的羟丙基化产物[HPCTS-Fe(Ⅱ)],其平均取代度为0.251。对CTS和HPCTS-Fe(Ⅱ)的溶解性、光谱图及对重金属离子吸附进行了比较,结果表明,与CTS相比,HPCTS-Fe(Ⅱ)的水溶性和酸溶解性有明显提高,并且对Cu2+和Pb2+的吸附量最大可分别提高44.78%和18.22%。In this paper,chitosan was conjugated to Fe(Ⅱ) under ultrasound irradiation in particular reaction conditions to form chitosan-Fe(Ⅱ) [CTS-Fe(Ⅱ)].Then,O-hydroxyl isopropyl chitosan-Fe(Ⅱ) [HPCTS-Fe(Ⅱ)] was synthesized via 10% tetramethylammonium hydroxide-catalyzed modification of CTS-Fe(Ⅱ) by 2-epoxypropane in an alkaline environment.The average degree of substitution(DS) was 0.251.It was also found that water-solubility and acid-solubility of HPCTS-Fe(Ⅱ) were much higher than those CTS and the maximum absorption amounts of HPCTS-Fe(Ⅱ) on Cu2+ and Pb2+ were 44.78% and 18.22% respectively higher than those of CTS.
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