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利用五谷虫蛹壳制备甲壳素和壳聚糖条件的优化

Dptiomal Condition of Chitin and Chitosan Preparation from the Shell of Maggot

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【作者】 李于郝清王秋实郝向阳王学英

【Author】 LI Yu1,HAO Qing2,WANG Qiu-shi1,HAO-Xiang-yang2,WANG Xue-ying1(1.Key Labolatory of Agricultural Biotechnology of Liaoning Provence,Shenyang Agricultural University,Shenyang 110866,China;2.Dalian Huaqi Food Company,Zhuanghe Liaoning 116400,China)

【机构】 沈阳农业大学辽宁省农业生物技术重点实验室大连华琦食品有限公司

【摘要】 以五谷虫蛹壳为原料,采用酸碱法提取甲壳素并制备壳聚糖。结果表明,从五谷虫蛹壳中提取甲壳素的最佳工艺为:盐敏脱矿物质的质量分数为5%,处理温度为30℃,处理时间为20h;NaOH脱有机物质的质量分数为5%,处理温度为75℃,处理时间为6h。在此工艺下所得甲壳素产品为白色片状固体,其产品质量指标达到食品级甲壳素标准,其水分含量为6.89%,灰分为0.81%,含氮量为6.51%,提取率为32.3%。壳聚糖制备的最佳工艺为:NaOH质量分数55%,浸泡时间6h,浸泡温度100℃。所得壳聚糖产品为白色片状固体,其水分含量为3.17%,灰分为0.67%,脱乙酰度为80.94%,黏度为20mPa·s,提取率为19.4%。

【Abstract】 Maggot was used as raw material to extract chitin and chitosan with the Acid-Alkali method.The optimal techniques for preparation of chitin were as the follows: the maggot was treated with 5% HCl at 30℃ for 20h to demineralize;and then treated with 5% NaOH at 75℃ for 6h to remove the organic substances.The obtained chitin under the conditions was white sheet solid,and its water content was 6.89% and ash content was 0.81%.The nitrogen content was 6.51%,and extraction ratio was 32.3%,and its quality reached to the criterion of food grade.The optimal protocol for preparation of chitosan was as the follows: the chitin was extracted with 55% NaOH at 100℃ for 6h.The obtained chitosan under the conditions was white sheet solid,and its water content was 3.17% and ash content was 0.67%.The degree of deacetylation of the product was 80.94%,and its viscosity was 20mPa.s,and extraction ratio was 19.4%.

【关键词】 五谷虫甲壳素壳聚糖提取
【Key words】 maggotchitinchitosanrefine
【基金】 “十五”辽宁省科技攻关项目(200120881)
  • 【文献出处】 沈阳农业大学学报 ,Journal of Shenyang Agricultural University , 编辑部邮箱 ,2010年01期
  • 【分类号】TQ28
  • 【被引频次】1
  • 【下载频次】248
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