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甲壳素制备壳聚糖脱乙酰度可控性的研究 总被引:1,自引:0,他引:1
介绍了甲壳素(ehintin)和壳聚糖(ehitosan)的性质、用途及发展前景;分析了国内外对壳聚糖的研究状况及取得的成果;描述了制备壳聚糖的实验原理;初步研究了在保证能获得大分子量的情况下提高壳聚糖的脱乙酰度的实验方法;介绍了测定壳聚糖脱乙酰基的实验方法;分析了影响壳聚糖脱乙酰度(Degree of Deacetylation缩写:D.D.)的主要因素。 相似文献
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双突跃电位滴定法测定壳聚糖脱乙酰度 总被引:19,自引:0,他引:19
用 Microsoft Excel研究了电位滴定法测定壳聚糖的脱乙酰度的滴定曲线 ,利用两个突跃之间的氢氧化钠的用量计算了脱乙酰度。该方法具有准确可靠 ,重复性好等优点 ,相对标准偏差小于 0 .9%。 相似文献
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从虾蟹壳制备甲壳素及壳聚糖的研究 总被引:8,自引:0,他引:8
本文以云南出产的蟹、虾的外壳为原料,制备出粘度高、色泽洁白的甲壳素和壳聚糖产品。同时,对制备过程中酸、碱的浓度、反应温度和时间,配料比以及氧化还原的条件等对产品质量和收率的影响进行了研究。找出了较好的生产工艺条件。 相似文献
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甲壳质和壳聚糖的研究、开发和利用 总被引:1,自引:0,他引:1
论述了壳聚糖作为成模剂,医用材料,医药材料,食品添加剂,植物生长剂,水果保鲜剂,护肤、护发用品,纸张处理剂,污水处理剂等用途,以及在氨基上发生的化学反应。并就其生产、开发应用及前景展望几部分进行讨论。 相似文献
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甲壳素、壳聚糖在医药领域的应用 总被引:16,自引:0,他引:16
论述了甲壳素/壳聚糖的制备,结构,性质及作为医用敷料,生物接合材料,硬组织修复材料,抗凝血材料,药物控释材料,药用保健品等医药学领域的最新研究动态和应用进展。 相似文献
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Zinia Nasreen Ruhul A. Khan A. I. Mustafa 《Polymer-Plastics Technology and Engineering》2013,52(2):121-129
Chitosan powder was extracted from prawn shell via chitin formation by chemical treatment. Chitosan solution (2 wt.%) was prepared in aqueous solution containing ethanoic acid (2 wt.%) along with varying amounts of potassium persulphate as thermal initiator (10 to 50 mg). Surgical gauze was immersed in the chitosan solution for 10–45 min. Coating was carried out at 70–110°C and heating time varied from 30–180 min. Chitosan uptake and the mechanical properties of the chitosan coated surgical gauze, such as tensile strength (TS) and elongation at break (Eb), were measured. Soaking time, curing time, and curing temperature of the surgical gauze were optimized for the preparation of coated gauze over chitosan uptake and mechanical properties. Surgical gauze soaked for 20 min at 90°C for 120 min of curing showed the highest chitosan uptake and TS (9 MPa). Soil burial tests revealed that coated gauze became twisted and almost degraded within 6 weeks of ageing. Water uptake properties of the coated gauze were monitored. Scanning electron microscopic analysis of the surface of the coated gauze found that the coating of chitosan became brittle with the use of higher amounts (50 mg) of thermal initiator. 相似文献
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