| .以牡蛎壳为钙源的谷氨酸螯合钙制备工艺研究[J].中国海洋药物,2010,29(2):. |
| 以牡蛎壳为钙源的谷氨酸螯合钙制备工艺研究 |
| Study on the technology of glutamic acid chelated calcium prepared with oyster shell as calcium source |
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| DOI： |
| 中文关键词: 牡蛎壳 谷氨酸螯合钙 工艺 红外光谱 螯合率 |
| English Keywords:oyster shell glutamic acid chelated calcium technology infrared spectrum chelate ratio |
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| 中文摘要: |
| 目的为了高值化利用海洋生物资源,以牡蛎加工产生的大量废弃物—牡蛎壳为钙源制备谷氨酸螯合钙。方法牡蛎壳经去除附着物、粉碎、水飞法处理制成粉末后与谷氨酸直接进行合成反应,以产率为考察指标,采用变量控制法从pH、摩尔配比、温度、反应时间4个方面探索最适的制备条件,并对产品进行红外光谱鉴定和螯合率测定。结果最佳工艺条件为谷氨酸与牡蛎壳粉CaCO3摩尔配比为2∶1.1~1.2,温度为70℃,反应液pH值为5~6,反应时间为1h。采用上述优化实验条件可使谷氨酸螯合钙产率达到89.7%,螯合率达94.5%。结论牡蛎壳粉不经煅烧可直接应用于谷氨酸螯合钙的制备.该工艺具有简便易行、绿色环保的特点,为高值化利用牡蛎壳奠定了基础。 |
| English Summary: |
| Objective To make full use of marine biological resources,oyster shell was utilized as calcium source to prepare glutamic acid chelated calcium.Methods Oyster shell powder which was obtained by removing surface attachments,grinding and powder-refining with water reacted directly with glutamic acid.Yield was chosen as examination index and conditions(including mole ratio between glutamic acid and calcium carbonate in oyster shell,pH,temperature and reaction time) were used to screen the optimal technology.Th... |
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